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Merge pull request #248 from ARMmbed/dreemkiller_rename_driver

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Various Changes for the PSA Driver Model
This commit is contained in:
Jaeden Amero 2019-03-06 18:59:46 +00:00 committed by GitHub
parent a78c958b17 32668ce268
commit 03a60301d7
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 604 additions and 574 deletions
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277
include/psa/crypto_accel_driver.h
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@ -38,12 +38,13 @@
extern "C" {
#endif
/** \defgroup driver_digest Message Digests
/** \defgroup driver_digest Hardware-Accelerated Message Digests
*
* Generation and authentication of Message Digests (aka hashes) must be done
* in parts using the following sequence:
* - `psa_drv_hash_setup_t`
* - `psa_drv_hash_update_t`
* - `psa_drv_hash_update_t`
* - ...
* - `psa_drv_hash_finish_t`
*
@ -64,7 +65,7 @@ typedef struct psa_drv_hash_context_s psa_drv_hash_context_t;
/** \brief The function prototype for the start operation of a hash (message
* digest) operation
*
* Functions that implement the prototype should be named in the following
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_hash_<ALGO>_setup
@ -81,7 +82,7 @@ typedef psa_status_t (*psa_drv_hash_setup_t)(psa_drv_hash_context_t *p_context);
/** \brief The function prototype for the update operation of a hash (message
* digest) operation
*
* Functions that implement the prototype should be named in the following
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_hash_<ALGO>_update
@ -99,10 +100,10 @@ typedef psa_status_t (*psa_drv_hash_update_t)(psa_drv_hash_context_t *p_context,
const uint8_t *p_input,
size_t input_length);
/** \brief The prototype for the finish operation of a hash (message digest)
* operation
/** \brief The function prototype for the finish operation of a hash (message
* digest) operation
*
* Functions that implement the prototype should be named in the following
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_hash_<ALGO>_finish
@ -130,7 +131,7 @@ typedef psa_status_t (*psa_drv_hash_finish_t)(psa_drv_hash_context_t *p_context,
/** \brief The function prototype for the abort operation of a hash (message
* digest) operation
*
* Functions that implement the prototype should be named in the following
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_hash_<ALGO>_abort
@ -144,39 +145,39 @@ typedef void (*psa_drv_hash_abort_t)(psa_drv_hash_context_t *p_context);
/**@}*/
/** \defgroup transparent_mac Transparent Message Authentication Code
/** \defgroup accel_mac Hardware-Accelerated Message Authentication Code
* Generation and authentication of Message Authentication Codes (MACs) using
* transparent keys can be done either as a single function call (via the
* `psa_drv_mac_transparent_generate_t` or `psa_drv_mac_transparent_verify_t`
* cryptographic accelerators can be done either as a single function call (via the
* `psa_drv_accel_mac_generate_t` or `psa_drv_accel_mac_verify_t`
* functions), or in parts using the following sequence:
* - `psa_drv_mac_transparent_setup_t`
* - `psa_drv_mac_transparent_update_t`
* - `psa_drv_mac_transparent_update_t`
* - `psa_drv_accel_mac_setup_t`
* - `psa_drv_accel_mac_update_t`
* - `psa_drv_accel_mac_update_t`
* - ...
* - `psa_drv_mac_transparent_finish_t` or `psa_drv_mac_transparent_finish_verify_t`
* - `psa_drv_accel_mac_finish_t` or `psa_drv_accel_mac_finish_verify_t`
*
* If a previously started Transparent MAC operation needs to be terminated, it
* should be done so by the `psa_drv_mac_transparent_abort_t`. Failure to do so may
* If a previously started MAC operation needs to be terminated, it
* should be done so by the `psa_drv_accel_mac_abort_t`. Failure to do so may
* result in allocated resources not being freed or in other undefined
* behavior.
*
*/
/**@{*/
/** \brief The hardware-specific transparent-key MAC context structure
/** \brief The hardware-accelerator-specific MAC context structure
*
* The contents of this structure are implementation dependent and are
* therefore not described here.
*/
typedef struct psa_drv_mac_transparent_context_s psa_drv_mac_transparent_context_t;
typedef struct psa_drv_accel_mac_context_s psa_drv_accel_mac_context_t;
/** \brief The function prototype for the setup operation of a
* transparent-key MAC operation
* hardware-accelerated MAC operation
*
* Functions that implement the prototype should be named in the following
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_mac_transparent_<ALGO>_<MAC_VARIANT>_setup
* psa_drv_accel_mac_<ALGO>_<MAC_VARIANT>_setup
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying primitive, and `MAC_VARIANT`
* is the specific variant of a MAC operation (such as HMAC or CMAC)
@ -190,17 +191,17 @@ typedef struct psa_drv_mac_transparent_context_s psa_drv_mac_transparent_context
* \retval PSA_SUCCESS
* Success.
*/
typedef psa_status_t (*psa_drv_mac_transparent_setup_t)(psa_drv_mac_transparent_context_t *p_context,
typedef psa_status_t (*psa_drv_accel_mac_setup_t)(psa_drv_accel_mac_context_t *p_context,
const uint8_t *p_key,
size_t key_length);
/** \brief The function prototype for the update operation of a
* transparent-key MAC operation
* hardware-accelerated MAC operation
*
* Functions that implement the prototype should be named in the following
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_mac_transparent_<ALGO>_<MAC_VARIANT>_update
* psa_drv_accel_mac_<ALGO>_<MAC_VARIANT>_update
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm, and `MAC_VARIANT`
* is the specific variant of a MAC operation (such as HMAC or CMAC)
@ -212,17 +213,17 @@ typedef psa_status_t (*psa_drv_mac_transparent_setup_t)(psa_drv_mac_transparent_
* to the MAC operation
* \param[in] input_length The size in bytes of the input message buffer
*/
typedef psa_status_t (*psa_drv_mac_transparent_update_t)(psa_drv_mac_transparent_context_t *p_context,
typedef psa_status_t (*psa_drv_accel_mac_update_t)(psa_drv_accel_mac_context_t *p_context,
const uint8_t *p_input,
size_t input_length);
/** \brief The function prototype for the finish operation of a
* transparent-key MAC operation
* hardware-accelerated MAC operation
*
* Functions that implement the prototype should be named in the following
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_mac_transparent_<ALGO>_<MAC_VARIANT>_finish
* psa_drv_accel_mac_<ALGO>_<MAC_VARIANT>_finish
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm, and `MAC_VARIANT` is
* the specific variant of a MAC operation (such as HMAC or CMAC)
@ -237,17 +238,17 @@ typedef psa_status_t (*psa_drv_mac_transparent_update_t)(psa_drv_mac_transparent
* \retval PSA_SUCCESS
* Success.
*/
typedef psa_status_t (*psa_drv_mac_transparent_finish_t)(psa_drv_mac_transparent_context_t *p_context,
typedef psa_status_t (*psa_drv_accel_mac_finish_t)(psa_drv_accel_mac_context_t *p_context,
uint8_t *p_mac,
size_t mac_length);
/** \brief The function prototype for the finish and verify operation of a
* transparent-key MAC operation
* hardware-accelerated MAC operation
*
* Functions that implement the prototype should be named in the following
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_mac_transparent_<ALGO>_<MAC_VARIANT>_finish_verify
* psa_drv_accel_mac_<ALGO>_<MAC_VARIANT>_finish_verify
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm, and `MAC_VARIANT` is
* the specific variant of a MAC operation (such as HMAC or CMAC)
@ -263,17 +264,17 @@ typedef psa_status_t (*psa_drv_mac_transparent_finish_t)(psa_drv_mac_transparent
* \retval PSA_SUCCESS
* The operation completed successfully and the comparison matched
*/
typedef psa_status_t (*psa_drv_mac_transparent_finish_verify_t)(psa_drv_mac_transparent_context_t *p_context,
typedef psa_status_t (*psa_drv_accel_mac_finish_verify_t)(psa_drv_accel_mac_context_t *p_context,
const uint8_t *p_mac,
size_t mac_length);
/** \brief The function prototype for the abort operation for a previously
* started transparent-key MAC operation
* started hardware-accelerated MAC operation
*
* Functions that implement the prototype should be named in the following
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_mac_transparent_<ALGO>_<MAC_VARIANT>_abort
* psa_drv_accel_mac_<ALGO>_<MAC_VARIANT>_abort
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm, and `MAC_VARIANT` is
* the specific variant of a MAC operation (such as HMAC or CMAC)
@ -283,15 +284,15 @@ typedef psa_status_t (*psa_drv_mac_transparent_finish_verify_t)(psa_drv_mac_tran
* aborted
*
*/
typedef psa_status_t (*psa_drv_mac_transparent_abort_t)(psa_drv_mac_transparent_context_t *p_context);
typedef psa_status_t (*psa_drv_accel_mac_abort_t)(psa_drv_accel_mac_context_t *p_context);
/** \brief The function prototype for a one-shot operation of a transparent-key
* MAC operation
/** \brief The function prototype for the one-shot operation of a
* hardware-accelerated MAC operation
*
* Functions that implement the prototype should be named in the following
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_mac_transparent_<ALGO>_<MAC_VARIANT>
* psa_drv_accel_mac_<ALGO>_<MAC_VARIANT>
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm, and `MAC_VARIANT` is
* the specific variant of a MAC operation (such as HMAC or CMAC)
@ -306,7 +307,7 @@ typedef psa_status_t (*psa_drv_mac_transparent_abort_t)(psa_drv_mac_transparent_
* upon success
* \param[in] mac_length The length in bytes of the `p_mac` buffer
*/
typedef psa_status_t (*psa_drv_mac_transparent_t)(const uint8_t *p_input,
typedef psa_status_t (*psa_drv_accel_mac_t)(const uint8_t *p_input,
size_t input_length,
const uint8_t *p_key,
size_t key_length,
@ -314,13 +315,13 @@ typedef psa_status_t (*psa_drv_mac_transparent_t)(const uint8_t *p_input,
uint8_t *p_mac,
size_t mac_length);
/** \brief The function prototype for a one-shot operation of a transparent-key
* MAC Verify operation
/** \brief The function prototype for the one-shot hardware-accelerated MAC
* Verify operation
*
* Functions that implement the prototype should be named in the following
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_mac_transparent_<ALGO>_<MAC_VARIANT>_verify
* psa_drv_accel_mac_<ALGO>_<MAC_VARIANT>_verify
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm, and `MAC_VARIANT` is
* the specific variant of a MAC operation (such as HMAC or CMAC)
@ -337,7 +338,7 @@ typedef psa_status_t (*psa_drv_mac_transparent_t)(const uint8_t *p_input,
* \retval PSA_SUCCESS
* The operation completed successfully and the comparison matched
*/
typedef psa_status_t (*psa_drv_mac_transparent_verify_t)(const uint8_t *p_input,
typedef psa_status_t (*psa_drv_accel_mac_verify_t)(const uint8_t *p_input,
size_t input_length,
const uint8_t *p_key,
size_t key_length,
@ -346,42 +347,44 @@ typedef psa_status_t (*psa_drv_mac_transparent_verify_t)(const uint8_t *p_input,
size_t mac_length);
/**@}*/
/** \defgroup transparent_cipher Transparent Block Cipher
* Encryption and Decryption using transparent keys in block modes other than
* ECB must be done in multiple parts, using the following flow:
* - `psa_drv_cipher_transparent_setup_t`
* - `psa_drv_cipher_transparent_set_iv_t` (optional depending upon block mode)
* - `psa_drv_cipher_transparent_update_t`
/** \defgroup accel_cipher Hardware-Accelerated Block Ciphers
* Encryption and Decryption using hardware-acceleration in block modes other
* than ECB must be done in multiple parts, using the following flow:
* - `psa_drv_accel_ciphersetup_t`
* - `psa_drv_accel_cipher_set_iv_t` (optional depending upon block mode)
* - `psa_drv_accel_cipher_update_t`
* - `psa_drv_accel_cipher_update_t`
* - ...
* - `psa_drv_cipher_transparent_finish_t`
* If a previously started Transparent Cipher operation needs to be terminated,
* it should be done so by the `psa_drv_cipher_transparent_abort_t`. Failure to do
* so may result in allocated resources not being freed or in other undefined
* behavior.
* - `psa_drv_accel_cipher_finish_t`
*
* If a previously started hardware-accelerated Cipher operation needs to be
* terminated, it should be done so by the `psa_drv_accel_cipher_abort_t`.
* Failure to do so may result in allocated resources not being freed or in
* other undefined behavior.
*/
/**@{*/
/** \brief The hardware-specific transparent-key Cipher context structure
/** \brief The hardware-accelerator-specific cipher context structure
*
* The contents of this structure are implementation dependent and are
* therefore not described here.
*/
typedef struct psa_drv_cipher_transparent_context_s psa_drv_cipher_transparent_context_t;
typedef struct psa_drv_accel_cipher_context_s psa_drv_accel_cipher_context_t;
/** \brief The function prototype for the setup operation of transparent-key
* block cipher operations.
* Functions that implement the prototype should be named in the following
/** \brief The function prototype for the setup operation of
* hardware-accelerated block cipher operations.
* Functions that implement this prototype should be named in the following
* conventions:
* ~~~~~~~~~~~~~{.c}
* psa_drv_cipher_transparent_setup_<CIPHER_NAME>_<MODE>
* psa_drv_accel_cipher_setup_<CIPHER_NAME>_<MODE>
* ~~~~~~~~~~~~~
* Where
* - `CIPHER_NAME` is the name of the underlying block cipher (i.e. AES or DES)
* - `MODE` is the block mode of the cipher operation (i.e. CBC or CTR)
* or for stream ciphers:
*
* For stream ciphers:
* ~~~~~~~~~~~~~{.c}
* psa_drv_cipher_transparent_setup_<CIPHER_NAME>
* psa_drv_accel_cipher_setup_<CIPHER_NAME>
* ~~~~~~~~~~~~~
* Where `CIPHER_NAME` is the name of a stream cipher (i.e. RC4)
*
@ -395,17 +398,17 @@ typedef struct psa_drv_cipher_transparent_context_s psa_drv_cipher_transparent_c
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_cipher_transparent_setup_t)(psa_drv_cipher_transparent_context_t *p_context,
typedef psa_status_t (*psa_drv_accel_cipher_setup_t)(psa_drv_accel_cipher_context_t *p_context,
psa_encrypt_or_decrypt_t direction,
const uint8_t *p_key_data,
size_t key_data_size);
/** \brief The function prototype for the set initialization vector operation
* of transparent-key block cipher operations
* Functions that implement the prototype should be named in the following
* of hardware-accelerated block cipher operations
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_cipher_transparent_set_iv_<CIPHER_NAME>_<MODE>
* psa_drv_accel_cipher_set_iv_<CIPHER_NAME>_<MODE>
* ~~~~~~~~~~~~~
* Where
* - `CIPHER_NAME` is the name of the underlying block cipher (i.e. AES or DES)
@ -418,17 +421,17 @@ typedef psa_status_t (*psa_drv_cipher_transparent_setup_t)(psa_drv_cipher_transp
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_cipher_transparent_set_iv_t)(psa_drv_cipher_transparent_context_t *p_context,
typedef psa_status_t (*psa_drv_accel_cipher_set_iv_t)(psa_drv_accel_cipher_context_t *p_context,
const uint8_t *p_iv,
size_t iv_length);
/** \brief The function prototype for the update operation of transparent-key
* block cipher operations.
/** \brief The function prototype for the update operation of
* hardware-accelerated block cipher operations.
*
* Functions that implement the prototype should be named in the following
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_cipher_transparent_update_<CIPHER_NAME>_<MODE>
* psa_drv_accel_cipher_update_<CIPHER_NAME>_<MODE>
* ~~~~~~~~~~~~~
* Where
* - `CIPHER_NAME` is the name of the underlying block cipher (i.e. AES or DES)
@ -447,20 +450,20 @@ typedef psa_status_t (*psa_drv_cipher_transparent_set_iv_t)(psa_drv_cipher_trans
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_cipher_transparent_update_t)(psa_drv_cipher_transparent_context_t *p_context,
typedef psa_status_t (*psa_drv_accel_cipher_update_t)(psa_drv_accel_cipher_context_t *p_context,
const uint8_t *p_input,
size_t input_size,
uint8_t *p_output,
size_t output_size,
size_t *p_output_length);
/** \brief The function prototype for the finish operation of transparent-key
* block cipher operations.
/** \brief The function prototype for the finish operation of
* hardware-accelerated block cipher operations.
*
* Functions that implement the prototype should be named in the following
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_cipher_transparent_finish_<CIPHER_NAME>_<MODE>
* psa_drv_accel_cipher_finish_<CIPHER_NAME>_<MODE>
* ~~~~~~~~~~~~~
* Where
* - `CIPHER_NAME` is the name of the underlying block cipher (i.e. AES or DES)
@ -476,18 +479,18 @@ typedef psa_status_t (*psa_drv_cipher_transparent_update_t)(psa_drv_cipher_trans
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_cipher_transparent_finish_t)(psa_drv_cipher_transparent_context_t *p_context,
typedef psa_status_t (*psa_drv_accel_cipher_finish_t)(psa_drv_accel_cipher_context_t *p_context,
uint8_t *p_output,
size_t output_size,
size_t *p_output_length);
/** \brief The function prototype for the abort operation of transparent-key
* block cipher operations.
/** \brief The function prototype for the abort operation of
* hardware-accelerated block cipher operations.
*
* Functions that implement the following prototype should be named in the
* following convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_cipher_transparent_abort_<CIPHER_NAME>_<MODE>
* psa_drv_accel_cipher_abort_<CIPHER_NAME>_<MODE>
* ~~~~~~~~~~~~~
* Where
* - `CIPHER_NAME` is the name of the underlying block cipher (i.e. AES or DES)
@ -498,27 +501,27 @@ typedef psa_status_t (*psa_drv_cipher_transparent_finish_t)(psa_drv_cipher_trans
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_cipher_transparent_abort_t)(psa_drv_cipher_transparent_context_t *p_context);
typedef psa_status_t (*psa_drv_accel_cipher_abort_t)(psa_drv_accel_cipher_context_t *p_context);
/**@}*/
/** \defgroup aead_transparent AEAD Transparent
/** \defgroup accel_aead Hardware-Accelerated Authenticated Encryption with Additional Data
*
* Authenticated Encryption with Additional Data (AEAD) operations with
* transparent keys must be done in one function call. While this creates a
* burden for implementers as there must be sufficient space in memory for the
* entire message, it prevents decrypted data from being made available before
* the authentication operation is complete and the data is known to be
* authentic.
* Hardware-accelerated Authenticated Encryption with Additional Data (AEAD)
* operations must be done in one function call. While this creates a burden
* for implementers as there must be sufficient space in memory for the entire
* message, it prevents decrypted data from being made available before the
* authentication operation is complete and the data is known to be authentic.
*/
/**@{*/
/** Process an authenticated encryption operation using an opaque key.
/** \brief The function prototype for the hardware-accelerated authenticated
* encryption operation.
*
* Functions that implement the prototype should be named in the following
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_aead_<ALGO>_encrypt
* psa_drv_accel_aead_<ALGO>_encrypt
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the AEAD algorithm
*
@ -551,9 +554,9 @@ typedef psa_status_t (*psa_drv_cipher_transparent_abort_t)(psa_drv_cipher_transp
* the `ciphertext` buffer
*
* \retval #PSA_SUCCESS
*
*/
typedef psa_status_t (*psa_drv_aead_transparent_encrypt_t)(const uint8_t *p_key,
typedef psa_status_t (*psa_drv_accel_aead_encrypt_t)(const uint8_t *p_key,
size_t key_length,
psa_algorithm_t alg,
const uint8_t *nonce,
@ -566,12 +569,13 @@ typedef psa_status_t (*psa_drv_aead_transparent_encrypt_t)(const uint8_t *p_key,
size_t ciphertext_size,
size_t *ciphertext_length);
/** Process an authenticated decryption operation using an opaque key.
/** \brief The function prototype for the hardware-accelerated authenticated
* decryption operation.
*
* Functions that implement the prototype should be named in the following
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_aead_<ALGO>_decrypt
* psa_drv_accel_aead_<ALGO>_decrypt
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the AEAD algorithm
* \param[in] p_key A pointer to the key material
@ -604,7 +608,7 @@ typedef psa_status_t (*psa_drv_aead_transparent_encrypt_t)(const uint8_t *p_key,
* \retval #PSA_SUCCESS
* Success.
*/
typedef psa_status_t (*psa_drv_aead_transparent_decrypt_t)(const uint8_t *p_key,
typedef psa_status_t (*psa_drv_accel_aead_decrypt_t)(const uint8_t *p_key,
size_t key_length,
psa_algorithm_t alg,
const uint8_t *nonce,
@ -619,26 +623,30 @@ typedef psa_status_t (*psa_drv_aead_transparent_decrypt_t)(const uint8_t *p_key,
/**@}*/
/** \defgroup transparent_asymmetric Transparent Asymmetric Cryptography
/** \defgroup accel_asymmetric Hardware-Accelerated Asymmetric Cryptography
*
* Since the amount of data that can (or should) be encrypted or signed using
* asymmetric keys is limited by the key size, asymmetric key operations using
* transparent keys must be done in single function calls.
* asymmetric keys is limited by the key size, hardware-accelerated asymmetric
* key operations must be done in single function calls.
*/
/**@{*/
/**
* \brief A function that signs a hash or short message with a transparent
* asymmetric private key
* \brief The function prototype for the hardware-accelerated asymmetric sign
* operation.
*
* Functions that implement the prototype should be named in the following
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_asymmetric_<ALGO>_sign
* psa_drv_accel_asymmetric_<ALGO>_sign
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the signing algorithm
*
* This function supports any asymmetric-key output from psa_export_key() as
* the buffer in \p p_key. Refer to the documentation of \ref
* psa_export_key() for the formats.
*
* \param[in] p_key A buffer containing the private key
* material
* \param[in] key_size The size in bytes of the `p_key` data
@ -653,9 +661,10 @@ typedef psa_status_t (*psa_drv_aead_transparent_decrypt_t)(const uint8_t *p_key,
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_asymmetric_transparent_sign_t)(const uint8_t *p_key,
typedef psa_status_t (*psa_drv_accel_asymmetric_sign_t)(const uint8_t *p_key,
size_t key_size,
psa_algorithm_t alg,
psa_key_type_t key_type,
const uint8_t *p_hash,
size_t hash_length,
uint8_t *p_signature,
@ -663,16 +672,21 @@ typedef psa_status_t (*psa_drv_asymmetric_transparent_sign_t)(const uint8_t *p_k
size_t *p_signature_length);
/**
* \brief A function that verifies the signature a hash or short message using
* a transparent asymmetric public key
* \brief The function prototype for the hardware-accelerated signature verify
* operation
*
* Functions that implement the prototype should be named in the following
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_asymmetric_<ALGO>_verify
* psa_drv_accel_asymmetric_<ALGO>_verify
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the signing algorithm
*
* This function supports any output from \ref psa_export_public_key() as the
* buffer in \p p_key. Refer to the documentation of \ref
* psa_export_public_key() for the format of public keys and to the
* documentation of \ref psa_export_key() for the format for other key types.
*
* \param[in] p_key A buffer containing the public key material
* \param[in] key_size The size in bytes of the `p_key` data
* \param[in] alg A signature algorithm that is compatible with
@ -686,25 +700,31 @@ typedef psa_status_t (*psa_drv_asymmetric_transparent_sign_t)(const uint8_t *p_k
* \retval PSA_SUCCESS
* The signature is valid.
*/
typedef psa_status_t (*psa_drv_asymmetric_transparent_verify_t)(const uint8_t *p_key,
typedef psa_status_t (*psa_drv_accel_asymmetric_verify_t)(const uint8_t *p_key,
size_t key_size,
psa_algorithm_t alg,
psa_key_type_t key_type,
const uint8_t *p_hash,
size_t hash_length,
const uint8_t *p_signature,
size_t signature_length);
/**
* \brief A function that encrypts a short message with a transparent
* asymmetric public key
* \brief The function prototype for the hardware-accelerated asymmetric
* encrypt operation
*
* Functions that implement the prototype should be named in the following
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_asymmetric_<ALGO>_encrypt
* psa_drv_accel_asymmetric_<ALGO>_encrypt
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the encryption algorithm
*
* This function supports any output from \ref psa_export_public_key() as the
* buffer in \p p_key. Refer to the documentation of \ref
* psa_export_public_key() for the format of public keys and to the
* documentation of \ref psa_export_key() for the format for other key types.
*
* \param[in] p_key A buffer containing the public key material
* \param[in] key_size The size in bytes of the `p_key` data
* \param[in] alg An asymmetric encryption algorithm that is
@ -730,9 +750,10 @@ typedef psa_status_t (*psa_drv_asymmetric_transparent_verify_t)(const uint8_t *p
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_asymmetric_transparent_encrypt_t)(const uint8_t *p_key,
typedef psa_status_t (*psa_drv_accel_asymmetric_encrypt_t)(const uint8_t *p_key,
size_t key_size,
psa_algorithm_t alg,
psa_key_type_t key_type,
const uint8_t *p_input,
size_t input_length,
const uint8_t *p_salt,
@ -742,15 +763,20 @@ typedef psa_status_t (*psa_drv_asymmetric_transparent_encrypt_t)(const uint8_t *
size_t *p_output_length);
/**
* \brief Decrypt a short message with a transparent asymmetric private key
* \brief The function prototype for the hardware=acce;erated asymmetric
* decrypt operation
*
* Functions that implement the prototype should be named in the following
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_asymmetric_<ALGO>_decrypt
* psa_drv_accel_asymmetric_<ALGO>_decrypt
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the encryption algorithm
*
* This function supports any asymmetric-key output from psa_export_key() as
* the buffer in \p p_key. Refer to the documentation of \ref
* psa_export_key() for the formats.
*
* \param[in] p_key A buffer containing the private key material
* \param[in] key_size The size in bytes of the `p_key` data
* \param[in] alg An asymmetric encryption algorithm that is
@ -776,9 +802,10 @@ typedef psa_status_t (*psa_drv_asymmetric_transparent_encrypt_t)(const uint8_t *
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_asymmetric_transparent_decrypt_t)(const uint8_t *p_key,
typedef psa_status_t (*psa_drv_accel_asymmetric_decrypt_t)(const uint8_t *p_key,
size_t key_size,
psa_algorithm_t alg,
psa_key_type_t key_type,
const uint8_t *p_input,
size_t input_length,
const uint8_t *p_salt,

17
include/psa/crypto_entropy_driver.h
View file

@ -40,10 +40,6 @@ extern "C" {
*/
/**@{*/
/** \brief A hardware-specific structure for a entropy providing hardware
*/
typedef struct psa_drv_entropy_context_s psa_drv_entropy_context_t;
/** \brief Initialize an entropy driver
*
*
@ -53,7 +49,7 @@ typedef struct psa_drv_entropy_context_s psa_drv_entropy_context_t;
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_entropy_init_t)(psa_drv_entropy_context_t *p_context);
typedef psa_status_t (*psa_drv_entropy_init_t)(void *p_context);
/** \brief Get a specified number of bits from the entropy source
*
@ -81,7 +77,7 @@ typedef psa_status_t (*psa_drv_entropy_init_t)(psa_drv_entropy_context_t *p_cont
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_entropy_get_bits_t)(psa_drv_entropy_context_t *p_context,
typedef psa_status_t (*psa_drv_entropy_get_bits_t)(void *p_context,
uint8_t *p_buffer,
uint32_t buffer_size,
uint32_t *p_received_entropy_bits);
@ -96,11 +92,12 @@ typedef psa_status_t (*psa_drv_entropy_get_bits_t)(psa_drv_entropy_context_t *p_
* If one of the functions is not implemented, it should be set to NULL.
*/
typedef struct {
/** The driver-specific size of the entropy context */
const size_t context_size;
/** Function that performs initialization for the entropy source */
psa_drv_entropy_init_t *p_init;
/** Function that performs the get_bits operation for the entropy source
*/
psa_drv_entropy_get_bits_t *p_get_bits;
psa_drv_entropy_init_t p_init;
/** Function that performs the get_bits operation for the entropy source */
psa_drv_entropy_get_bits_t p_get_bits;
} psa_drv_entropy_t;
/**@}*/

498
include/psa/crypto_se_driver.h
View file

@ -3,10 +3,10 @@
* \brief PSA external cryptoprocessor driver module
*
* This header declares types and function signatures for cryptography
* drivers that access key material via opaque references. This is
* meant for cryptoprocessors that have a separate key storage from the
* drivers that access key material via opaque references.
* This is meant for cryptoprocessors that have a separate key storage from the
* space in which the PSA Crypto implementation runs, typically secure
* elements.
* elements (SEs).
*
* This file is part of the PSA Crypto Driver Model, containing functions for
* driver developers to implement to enable hardware to be called in a
@ -43,27 +43,27 @@ extern "C" {
/** An internal designation of a key slot between the core part of the
* PSA Crypto implementation and the driver. The meaning of this value
* is driver-dependent. */
typedef uint32_t psa_key_slot_t;
typedef uint32_t psa_key_slot_number_t; // Change this to psa_key_slot_t after psa_key_slot_t is removed from Mbed crypto
/** \defgroup opaque_mac Opaque Message Authentication Code
/** \defgroup se_mac Secure Element Message Authentication Codes
* Generation and authentication of Message Authentication Codes (MACs) using
* opaque keys can be done either as a single function call (via the
* `psa_drv_mac_opaque_generate_t` or `psa_drv_mac_opaque_verify_t` functions), or in
* a secure element can be done either as a single function call (via the
* `psa_drv_se_mac_generate_t` or `psa_drv_se_mac_verify_t` functions), or in
* parts using the following sequence:
* - `psa_drv_mac_opaque_setup_t`
* - `psa_drv_mac_opaque_update_t`
* - `psa_drv_mac_opaque_update_t`
* - `psa_drv_se_mac_setup_t`
* - `psa_drv_se_mac_update_t`
* - `psa_drv_se_mac_update_t`
* - ...
* - `psa_drv_mac_opaque_finish_t` or `psa_drv_mac_opaque_finish_verify_t`
* - `psa_drv_se_mac_finish_t` or `psa_drv_se_mac_finish_verify_t`
*
* If a previously started Opaque MAC operation needs to be terminated, it
* should be done so by the `psa_drv_mac_opaque_abort_t`. Failure to do so may
* If a previously started secure element MAC operation needs to be terminated,
* it should be done so by the `psa_drv_se_mac_abort_t`. Failure to do so may
* result in allocated resources not being freed or in other undefined
* behavior.
*/
/**@{*/
/** \brief A function that starts a MAC operation for a PSA Crypto Driver
* implementation using an opaque key
/** \brief A function that starts a secure element MAC operation for a PSA
* Crypto Driver implementation
*
* \param[in,out] p_context A structure that will contain the
* hardware-specific MAC context
@ -75,26 +75,26 @@ typedef uint32_t psa_key_slot_t;
* \retval PSA_SUCCESS
* Success.
*/
typedef psa_status_t (*psa_drv_mac_opaque_setup_t)(void *p_context,
psa_key_slot_t key_slot,
typedef psa_status_t (*psa_drv_se_mac_setup_t)(void *p_context,
psa_key_slot_number_t key_slot,
psa_algorithm_t algorithm);
/** \brief A function that continues a previously started MAC operation using
* an opaque key
/** \brief A function that continues a previously started secure element MAC
* operation
*
* \param[in,out] p_context A hardware-specific structure for the
* previously-established MAC operation to be
* continued
* updated
* \param[in] p_input A buffer containing the message to be appended
* to the MAC operation
* \param[in] input_length The size in bytes of the input message buffer
*/
typedef psa_status_t (*psa_drv_mac_opaque_update_t)(void *p_context,
typedef psa_status_t (*psa_drv_se_mac_update_t)(void *p_context,
const uint8_t *p_input,
size_t input_length);
/** \brief a function that completes a previously started MAC operation by
* returning the resulting MAC using an opaque key
/** \brief a function that completes a previously started secure element MAC
* operation by returning the resulting MAC.
*
* \param[in,out] p_context A hardware-specific structure for the
* previously started MAC operation to be
@ -109,13 +109,13 @@ typedef psa_status_t (*psa_drv_mac_opaque_update_t)(void *p_context,
* \retval PSA_SUCCESS
* Success.
*/
typedef psa_status_t (*psa_drv_mac_opaque_finish_t)(void *p_context,
typedef psa_status_t (*psa_drv_se_mac_finish_t)(void *p_context,
uint8_t *p_mac,
size_t mac_size,
size_t *p_mac_length);
/** \brief A function that completes a previously started MAC operation by
* comparing the resulting MAC against a known value using an opaque key
/** \brief A function that completes a previously started secure element MAC
* operation by comparing the resulting MAC against a provided value
*
* \param[in,out] p_context A hardware-specific structure for the previously
* started MAC operation to be fiinished
@ -130,19 +130,20 @@ typedef psa_status_t (*psa_drv_mac_opaque_finish_t)(void *p_context,
* The operation completed successfully, but the calculated MAC did
* not match the provided MAC
*/
typedef psa_status_t (*psa_drv_mac_opaque_finish_verify_t)(void *p_context,
typedef psa_status_t (*psa_drv_se_mac_finish_verify_t)(void *p_context,
const uint8_t *p_mac,
size_t mac_length);
/** \brief A function that aborts a previous started opaque-key MAC operation
/** \brief A function that aborts a previous started secure element MAC
* operation
*
* \param[in,out] p_context A hardware-specific structure for the previously
* started MAC operation to be aborted
*/
typedef psa_status_t (*psa_drv_mac_opaque_abort_t)(void *p_context);
typedef psa_status_t (*psa_drv_se_mac_abort_t)(void *p_context);
/** \brief A function that performs a MAC operation in one command and returns
* the calculated MAC using an opaque key
/** \brief A function that performs a secure element MAC operation in one
* command and returns the calculated MAC
*
* \param[in] p_input A buffer containing the message to be MACed
* \param[in] input_length The size in bytes of `p_input`
@ -158,16 +159,16 @@ typedef psa_status_t (*psa_drv_mac_opaque_abort_t)(void *p_context);
* \retval PSA_SUCCESS
* Success.
*/
typedef psa_status_t (*psa_drv_mac_opaque_generate_t)(const uint8_t *p_input,
typedef psa_status_t (*psa_drv_se_mac_generate_t)(const uint8_t *p_input,
size_t input_length,
psa_key_slot_t key_slot,
psa_key_slot_number_t key_slot,
psa_algorithm_t alg,
uint8_t *p_mac,
size_t mac_size,
size_t *p_mac_length);
/** \brief A function that performs an MAC operation in one command and
* compare the resulting MAC against a known value using an opaque key
/** \brief A function that performs a secure element MAC operation in one
* command and compares the resulting MAC against a provided value
*
* \param[in] p_input A buffer containing the message to be MACed
* \param[in] input_length The size in bytes of `input`
@ -185,21 +186,21 @@ typedef psa_status_t (*psa_drv_mac_opaque_generate_t)(const uint8_t *p_input,
* The operation completed successfully, but the calculated MAC did
* not match the provided MAC
*/
typedef psa_status_t (*psa_drv_mac_opaque_verify_t)(const uint8_t *p_input,
typedef psa_status_t (*psa_drv_se_mac_verify_t)(const uint8_t *p_input,
size_t input_length,
psa_key_slot_t key_slot,
psa_key_slot_number_t key_slot,
psa_algorithm_t alg,
const uint8_t *p_mac,
size_t mac_length);
/** \brief A struct containing all of the function pointers needed to
* implement MAC operations using opaque keys.
* perform secure element MAC operations
*
* PSA Crypto API implementations should populate the table as appropriate
* upon startup.
*
* If one of the functions is not implemented (such as
* `psa_drv_mac_opaque_generate_t`), it should be set to NULL.
* `psa_drv_se_mac_generate_t`), it should be set to NULL.
*
* Driver implementers should ensure that they implement all of the functions
* that make sense for their hardware, and that they provide a full solution
@ -208,57 +209,59 @@ typedef psa_status_t (*psa_drv_mac_opaque_verify_t)(const uint8_t *p_input,
*
*/
typedef struct {
/**The size in bytes of the hardware-specific Opaque-MAC Context structure
/**The size in bytes of the hardware-specific secure element MAC context
* structure
*/
size_t context_size;
/** Function that performs the setup operation
/** Function that performs a MAC setup operation
*/
psa_drv_mac_opaque_setup_t *p_setup;
/** Function that performs the update operation
psa_drv_se_mac_setup_t p_setup;
/** Function that performs a MAC update operation
*/
psa_drv_mac_opaque_update_t *p_update;
/** Function that completes the operation
psa_drv_se_mac_update_t p_update;
/** Function that completes a MAC operation
*/
psa_drv_mac_opaque_finish_t *p_finish;
/** Function that completed a MAC operation with a verify check
psa_drv_se_mac_finish_t p_finish;
/** Function that completes a MAC operation with a verify check
*/
psa_drv_mac_opaque_finish_verify_t *p_finish_verify;
/** Function that aborts a previoustly started operation
psa_drv_se_mac_finish_verify_t p_finish_verify;
/** Function that aborts a previoustly started MAC operation
*/
psa_drv_mac_opaque_abort_t *p_abort;
/** Function that performs the MAC operation in one call
psa_drv_se_mac_abort_t p_abort;
/** Function that performs a MAC operation in one call
*/
psa_drv_mac_opaque_generate_t *p_mac;
/** Function that performs the MAC and verify operation in one call
psa_drv_se_mac_generate_t p_mac;
/** Function that performs a MAC and verify operation in one call
*/
psa_drv_mac_opaque_verify_t *p_mac_verify;
} psa_drv_mac_opaque_t;
psa_drv_se_mac_verify_t p_mac_verify;
} psa_drv_se_mac_t;
/**@}*/
/** \defgroup opaque_cipher Opaque Symmetric Ciphers
/** \defgroup se_cipher Secure Element Symmetric Ciphers
*
* Encryption and Decryption using opaque keys in block modes other than ECB
* must be done in multiple parts, using the following flow:
* - `psa_drv_cipher_opaque_setup_t`
* - `psa_drv_cipher_opaque_set_iv_t` (optional depending upon block mode)
* - `psa_drv_cipher_opaque_update_t`
* Encryption and Decryption using secure element keys in block modes other
* than ECB must be done in multiple parts, using the following flow:
* - `psa_drv_se_cipher_setup_t`
* - `psa_drv_se_cipher_set_iv_t` (optional depending upon block mode)
* - `psa_drv_se_cipher_update_t`
* - `psa_drv_se_cipher_update_t`
* - ...
* - `psa_drv_cipher_opaque_finish_t`
* If a previously started Opaque Cipher operation needs to be terminated, it
* should be done so by the `psa_drv_cipher_opaque_abort_t`. Failure to do so may
* result in allocated resources not being freed or in other undefined
* behavior.
* - `psa_drv_se_cipher_finish_t`
*
* If a previously started secure element Cipher operation needs to be
* terminated, it should be done so by the `psa_drv_se_cipher_abort_t`. Failure
* to do so may result in allocated resources not being freed or in other
* undefined behavior.
*
* In situations where a PSA Cryptographic API implementation is using a block
* mode not-supported by the underlying hardware or driver, it can construct
* the block mode itself, while calling the `psa_drv_cipher_opaque_ecb_t` function
* pointer for the cipher operations.
* the block mode itself, while calling the `psa_drv_se_cipher_ecb_t` function
* for the cipher operations.
*/
/**@{*/
/** \brief A function pointer that provides the cipher setup function for
* opaque-key operations
/** \brief A function that provides the cipher setup function for a
* secure element driver
*
* \param[in,out] p_context A structure that will contain the
* hardware-specific cipher context.
@ -272,16 +275,16 @@ typedef struct {
* \retval PSA_SUCCESS
* \retval PSA_ERROR_NOT_SUPPORTED
*/
typedef psa_status_t (*psa_drv_cipher_opaque_setup_t)(void *p_context,
psa_key_slot_t key_slot,
typedef psa_status_t (*psa_drv_se_cipher_setup_t)(void *p_context,
psa_key_slot_number_t key_slot,
psa_algorithm_t algorithm,
psa_encrypt_or_decrypt_t direction);
/** \brief A function pointer that sets the initialization vector (if
* necessary) for an opaque cipher operation
/** \brief A function that sets the initialization vector (if
* necessary) for an secure element cipher operation
*
* Rationale: The `psa_cipher_*` function in the PSA Cryptographic API has two
* IV functions: one to set the IV, and one to generate it internally. The
* Rationale: The `psa_se_cipher_*` operation in the PSA Cryptographic API has
* two IV functions: one to set the IV, and one to generate it internally. The
* generate function is not necessary for the drivers to implement as the PSA
* Crypto implementation can do the generation using its RNG features.
*
@ -292,11 +295,11 @@ typedef psa_status_t (*psa_drv_cipher_opaque_setup_t)(void *p_context,
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_cipher_opaque_set_iv_t)(void *p_context,
typedef psa_status_t (*psa_drv_se_cipher_set_iv_t)(void *p_context,
const uint8_t *p_iv,
size_t iv_length);
/** \brief A function that continues a previously started opaque-key cipher
/** \brief A function that continues a previously started secure element cipher
* operation
*
* \param[in,out] p_context A hardware-specific structure for the
@ -314,14 +317,14 @@ typedef psa_status_t (*psa_drv_cipher_opaque_set_iv_t)(void *p_context,
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_cipher_opaque_update_t)(void *p_context,
typedef psa_status_t (*psa_drv_se_cipher_update_t)(void *p_context,
const uint8_t *p_input,
size_t input_size,
uint8_t *p_output,
size_t output_size,
size_t *p_output_length);
/** \brief A function that completes a previously started opaque-key cipher
/** \brief A function that completes a previously started secure element cipher
* operation
*
* \param[in,out] p_context A hardware-specific structure for the
@ -335,21 +338,21 @@ typedef psa_status_t (*psa_drv_cipher_opaque_update_t)(void *p_context,
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_cipher_opaque_finish_t)(void *p_context,
typedef psa_status_t (*psa_drv_se_cipher_finish_t)(void *p_context,
uint8_t *p_output,
size_t output_size,
size_t *p_output_length);
/** \brief A function that aborts a previously started opaque-key cipher
/** \brief A function that aborts a previously started secure element cipher
* operation
*
* \param[in,out] p_context A hardware-specific structure for the
* previously started cipher operation
*/
typedef psa_status_t (*psa_drv_cipher_opaque_abort_t)(void *p_context);
typedef psa_status_t (*psa_drv_se_cipher_abort_t)(void *p_context);
/** \brief A function that performs the ECB block mode for opaque-key cipher
* operations
/** \brief A function that performs the ECB block mode for secure element
* cipher operations
*
* Note: this function should only be used with implementations that do not
* provide a needed higher-level operation.
@ -370,7 +373,7 @@ typedef psa_status_t (*psa_drv_cipher_opaque_abort_t)(void *p_context);
* \retval PSA_SUCCESS
* \retval PSA_ERROR_NOT_SUPPORTED
*/
typedef psa_status_t (*psa_drv_cipher_opaque_ecb_t)(psa_key_slot_t key_slot,
typedef psa_status_t (*psa_drv_se_cipher_ecb_t)(psa_key_slot_number_t key_slot,
psa_algorithm_t algorithm,
psa_encrypt_or_decrypt_t direction,
const uint8_t *p_input,
@ -380,48 +383,49 @@ typedef psa_status_t (*psa_drv_cipher_opaque_ecb_t)(psa_key_slot_t key_slot,
/**
* \brief A struct containing all of the function pointers needed to implement
* cipher operations using opaque keys.
* cipher operations using secure elements.
*
* PSA Crypto API implementations should populate instances of the table as
* appropriate upon startup.
* appropriate upon startup or at build time.
*
* If one of the functions is not implemented (such as
* `psa_drv_cipher_opaque_ecb_t`), it should be set to NULL.
* `psa_drv_se_cipher_ecb_t`), it should be set to NULL.
*/
typedef struct {
/** The size in bytes of the hardware-specific Opaque Cipher context
* structure
/** The size in bytes of the hardware-specific secure element cipher
* context structure
*/
size_t size;
/** Function that performs the setup operation */
psa_drv_cipher_opaque_setup_t *p_setup;
/** Function that sets the IV (if necessary) */
psa_drv_cipher_opaque_set_iv_t *p_set_iv;
/** Function that performs the update operation */
psa_drv_cipher_opaque_update_t *p_update;
/** Function that completes the operation */
psa_drv_cipher_opaque_finish_t *p_finish;
/** Function that aborts the operation */
psa_drv_cipher_opaque_abort_t *p_abort;
/** Function that performs ECB mode for the cipher
size_t context_size;
/** Function that performs a cipher setup operation */
psa_drv_se_cipher_setup_t p_setup;
/** Function that sets a cipher IV (if necessary) */
psa_drv_se_cipher_set_iv_t p_set_iv;
/** Function that performs a cipher update operation */
psa_drv_se_cipher_update_t p_update;
/** Function that completes a cipher operation */
psa_drv_se_cipher_finish_t p_finish;
/** Function that aborts a cipher operation */
psa_drv_se_cipher_abort_t p_abort;
/** Function that performs ECB mode for a cipher operation
* (Danger: ECB mode should not be used directly by clients of the PSA
* Crypto Client API)
*/
psa_drv_cipher_opaque_ecb_t *p_ecb;
} psa_drv_cipher_opaque_t;
psa_drv_se_cipher_ecb_t p_ecb;
} psa_drv_se_cipher_t;
/**@}*/
/** \defgroup opaque_asymmetric Opaque Asymmetric Cryptography
/** \defgroup se_asymmetric Secure Element Asymmetric Cryptography
*
* Since the amount of data that can (or should) be encrypted or signed using
* asymmetric keys is limited by the key size, asymmetric key operations using
* opaque keys must be done in single function calls.
* keys in a secure element must be done in single function calls.
*/
/**@{*/
/**
* \brief A function that signs a hash or short message with a private key
* \brief A function that signs a hash or short message with a private key in
* a secure element
*
* \param[in] key_slot Key slot of an asymmetric key pair
* \param[in] alg A signature algorithm that is compatible
@ -435,7 +439,7 @@ typedef struct {
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_asymmetric_opaque_sign_t)(psa_key_slot_t key_slot,
typedef psa_status_t (*psa_drv_se_asymmetric_sign_t)(psa_key_slot_number_t key_slot,
psa_algorithm_t alg,
const uint8_t *p_hash,
size_t hash_length,
@ -445,7 +449,7 @@ typedef psa_status_t (*psa_drv_asymmetric_opaque_sign_t)(psa_key_slot_t key_slot
/**
* \brief A function that verifies the signature a hash or short message using
* an asymmetric public key
* an asymmetric public key in a secure element
*
* \param[in] key_slot Key slot of a public key or an asymmetric key
* pair
@ -459,7 +463,7 @@ typedef psa_status_t (*psa_drv_asymmetric_opaque_sign_t)(psa_key_slot_t key_slot
* \retval PSA_SUCCESS
* The signature is valid.
*/
typedef psa_status_t (*psa_drv_asymmetric_opaque_verify_t)(psa_key_slot_t key_slot,
typedef psa_status_t (*psa_drv_se_asymmetric_verify_t)(psa_key_slot_number_t key_slot,
psa_algorithm_t alg,
const uint8_t *p_hash,
size_t hash_length,
@ -468,7 +472,7 @@ typedef psa_status_t (*psa_drv_asymmetric_opaque_verify_t)(psa_key_slot_t key_sl
/**
* \brief A function that encrypts a short message with an asymmetric public
* key
* key in a secure element
*
* \param[in] key_slot Key slot of a public key or an asymmetric key
* pair
@ -495,7 +499,7 @@ typedef psa_status_t (*psa_drv_asymmetric_opaque_verify_t)(psa_key_slot_t key_sl
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_asymmetric_opaque_encrypt_t)(psa_key_slot_t key_slot,
typedef psa_status_t (*psa_drv_se_asymmetric_encrypt_t)(psa_key_slot_number_t key_slot,
psa_algorithm_t alg,
const uint8_t *p_input,
size_t input_length,
@ -506,7 +510,8 @@ typedef psa_status_t (*psa_drv_asymmetric_opaque_encrypt_t)(psa_key_slot_t key_s
size_t *p_output_length);
/**
* \brief Decrypt a short message with an asymmetric private key.
* \brief A function that decrypts a short message with an asymmetric private
* key in a secure element.
*
* \param[in] key_slot Key slot of an asymmetric key pair
* \param[in] alg An asymmetric encryption algorithm that is
@ -532,7 +537,7 @@ typedef psa_status_t (*psa_drv_asymmetric_opaque_encrypt_t)(psa_key_slot_t key_s
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_asymmetric_opaque_decrypt_t)(psa_key_slot_t key_slot,
typedef psa_status_t (*psa_drv_se_asymmetric_decrypt_t)(psa_key_slot_number_t key_slot,
psa_algorithm_t alg,
const uint8_t *p_input,
size_t input_length,
@ -544,36 +549,37 @@ typedef psa_status_t (*psa_drv_asymmetric_opaque_decrypt_t)(psa_key_slot_t key_s
/**
* \brief A struct containing all of the function pointers needed to implement
* asymmetric cryptographic operations using opaque keys.
* asymmetric cryptographic operations using secure elements.
*
* PSA Crypto API implementations should populate instances of the table as
* appropriate upon startup.
* appropriate upon startup or at build time.
*
* If one of the functions is not implemented, it should be set to NULL.
*/
typedef struct {
/** Function that performs the asymmetric sign operation */
psa_drv_asymmetric_opaque_sign_t *p_sign;
/** Function that performs the asymmetric verify operation */
psa_drv_asymmetric_opaque_verify_t *p_verify;
/** Function that performs the asymmetric encrypt operation */
psa_drv_asymmetric_opaque_encrypt_t *p_encrypt;
/** Function that performs the asymmetric decrypt operation */
psa_drv_asymmetric_opaque_decrypt_t *p_decrypt;
} psa_drv_asymmetric_opaque_t;
/** Function that performs an asymmetric sign operation */
psa_drv_se_asymmetric_sign_t p_sign;
/** Function that performs an asymmetric verify operation */
psa_drv_se_asymmetric_verify_t p_verify;
/** Function that performs an asymmetric encrypt operation */
psa_drv_se_asymmetric_encrypt_t p_encrypt;
/** Function that performs an asymmetric decrypt operation */
psa_drv_se_asymmetric_decrypt_t p_decrypt;
} psa_drv_se_asymmetric_t;
/**@}*/
/** \defgroup aead_opaque AEAD Opaque
* Authenticated Encryption with Additional Data (AEAD) operations with opaque
* keys must be done in one function call. While this creates a burden for
/** \defgroup se_aead Secure Element Authenticated Encryption with Additional Data
* Authenticated Encryption with Additional Data (AEAD) operations with secure
* elements must be done in one function call. While this creates a burden for
* implementers as there must be sufficient space in memory for the entire
* message, it prevents decrypted data from being made available before the
* authentication operation is complete and the data is known to be authentic.
*/
/**@{*/
/** \brief Process an authenticated encryption operation using an opaque key
/** \brief A function that performs a secure element authenticated encryption
* operation
*
* \param[in] key_slot Slot containing the key to use.
* \param[in] algorithm The AEAD algorithm to compute
@ -602,7 +608,7 @@ typedef struct {
* \retval #PSA_SUCCESS
* Success.
*/
typedef psa_status_t (*psa_drv_aead_opaque_encrypt_t)(psa_key_slot_t key_slot,
typedef psa_status_t (*psa_drv_se_aead_encrypt_t)(psa_key_slot_number_t key_slot,
psa_algorithm_t algorithm,
const uint8_t *p_nonce,
size_t nonce_length,
@ -614,7 +620,7 @@ typedef psa_status_t (*psa_drv_aead_opaque_encrypt_t)(psa_key_slot_t key_slot,
size_t ciphertext_size,
size_t *p_ciphertext_length);
/** Process an authenticated decryption operation using an opaque key
/** A function that peforms a secure element authenticated decryption operation
*
* \param[in] key_slot Slot containing the key to use
* \param[in] algorithm The AEAD algorithm to compute
@ -642,7 +648,7 @@ typedef psa_status_t (*psa_drv_aead_opaque_encrypt_t)(psa_key_slot_t key_slot,
* \retval #PSA_SUCCESS
* Success.
*/
typedef psa_status_t (*psa_drv_aead_opaque_decrypt_t)(psa_key_slot_t key_slot,
typedef psa_status_t (*psa_drv_se_aead_decrypt_t)(psa_key_slot_number_t key_slot,
psa_algorithm_t algorithm,
const uint8_t *p_nonce,
size_t nonce_length,
@ -656,7 +662,7 @@ typedef psa_status_t (*psa_drv_aead_opaque_decrypt_t)(psa_key_slot_t key_slot,
/**
* \brief A struct containing all of the function pointers needed to implement
* Authenticated Encryption with Additional Data operations using opaque keys
* secure element Authenticated Encryption with Additional Data operations
*
* PSA Crypto API implementations should populate instances of the table as
* appropriate upon startup.
@ -665,13 +671,13 @@ typedef psa_status_t (*psa_drv_aead_opaque_decrypt_t)(psa_key_slot_t key_slot,
*/
typedef struct {
/** Function that performs the AEAD encrypt operation */
psa_drv_aead_opaque_encrypt_t *p_encrypt;
psa_drv_se_aead_encrypt_t p_encrypt;
/** Function that performs the AEAD decrypt operation */
psa_drv_aead_opaque_decrypt_t *p_decrypt;
} psa_drv_aead_opaque_t;
psa_drv_se_aead_decrypt_t p_decrypt;
} psa_drv_se_aead_t;
/**@}*/
/** \defgroup driver_key_management Key Management
/** \defgroup se_key_management Secure Element Key Management
* Currently, key management is limited to importing keys in the clear,
* destroying keys, and exporting keys in the clear.
* Whether a key may be exported is determined by the key policies in place
@ -679,7 +685,7 @@ typedef struct {
*/
/**@{*/
/** \brief Import a key in binary format
/** \brief A function that imports a key into a secure element in binary format
*
* This function can support any output from psa_export_key(). Refer to the
* documentation of psa_export_key() for the format for each key type.
@ -687,6 +693,7 @@ typedef struct {
* \param[in] key_slot Slot where the key will be stored
* This must be a valid slot for a key of the chosen
* type. It must be unoccupied.
* \param[in] lifetime The required lifetime of the key storage
* \param[in] type Key type (a \c PSA_KEY_TYPE_XXX value)
* \param[in] algorithm Key algorithm (a \c PSA_ALG_XXX value)
* \param[in] usage The allowed uses of the key
@ -696,7 +703,8 @@ typedef struct {
* \retval #PSA_SUCCESS
* Success.
*/
typedef psa_status_t (*psa_drv_opaque_import_key_t)(psa_key_slot_t key_slot,
typedef psa_status_t (*psa_drv_se_import_key_t)(psa_key_slot_number_t key_slot,
psa_key_lifetime_t lifetime,
psa_key_type_t type,
psa_algorithm_t algorithm,
psa_key_usage_t usage,
@ -704,25 +712,24 @@ typedef psa_status_t (*psa_drv_opaque_import_key_t)(psa_key_slot_t key_slot,
size_t data_length);
/**
* \brief Destroy a key and restore the slot to its default state
* \brief A function that destroys a secure element key and restore the slot to
* its default state
*
* This function destroys the content of the key slot from both volatile
* memory and, if applicable, non-volatile storage. Implementations shall
* make a best effort to ensure that any previous content of the slot is
* unrecoverable.
* This function destroys the content of the key from a secure element.
* Implementations shall make a best effort to ensure that any previous content
* of the slot is unrecoverable.
*
* This function also erases any metadata such as policies. It returns the
* specified slot to its default state.
* This function returns the specified slot to its default state.
*
* \param[in] key_slot The key slot to erase.
*
* \retval #PSA_SUCCESS
* The slot's content, if any, has been erased.
*/
typedef psa_status_t (*psa_drv_destroy_key_t)(psa_key_slot_t key);
typedef psa_status_t (*psa_drv_se_destroy_key_t)(psa_key_slot_number_t key);
/**
* \brief Export a key in binary format
* \brief A function that exports a secure element key in binary format
*
* The output of this function can be passed to psa_import_key() to
* create an equivalent object.
@ -732,19 +739,9 @@ typedef psa_status_t (*psa_drv_destroy_key_t)(psa_key_slot_t key);
* identical: the implementation may choose a different representation
* of the same key if the format permits it.
*
* For standard key types, the output format is as follows:
*
* - For symmetric keys (including MAC keys), the format is the
* raw bytes of the key.
* - For DES, the key data consists of 8 bytes. The parity bits must be
* correct.
* - For Triple-DES, the format is the concatenation of the
* two or three DES keys.
* - For RSA key pairs (#PSA_KEY_TYPE_RSA_KEYPAIR), the format
* is the non-encrypted DER representation defined by PKCS\#1 (RFC 8017)
* as RSAPrivateKey.
* - For RSA public keys (#PSA_KEY_TYPE_RSA_PUBLIC_KEY), the format
* is the DER representation defined by RFC 5280 as SubjectPublicKeyInfo.
* This function should generate output in the same format that
* `psa_export_key()` does. Refer to the
* documentation of `psa_export_key()` for the format for each key type.
*
* \param[in] key Slot whose content is to be exported. This must
* be an occupied key slot.
@ -761,60 +758,72 @@ typedef psa_status_t (*psa_drv_destroy_key_t)(psa_key_slot_t key);
* \retval #PSA_ERROR_HARDWARE_FAILURE
* \retval #PSA_ERROR_TAMPERING_DETECTED
*/
typedef psa_status_t (*psa_drv_export_key_t)(psa_key_slot_t key,
typedef psa_status_t (*psa_drv_se_export_key_t)(psa_key_slot_number_t key,
uint8_t *p_data,
size_t data_size,
size_t *p_data_length);
/**
* \brief Export a public key or the public part of a key pair in binary format
* \brief A function that generates a symmetric or asymmetric key on a secure
* element
*
* The output of this function can be passed to psa_import_key() to
* create an object that is equivalent to the public key.
* If \p type is asymmetric (`#PSA_KEY_TYPE_IS_ASYMMETRIC(\p type) == 1`),
* the public component of the generated key will be placed in `p_pubkey_out`.
* The format of the public key information will match the format specified for
* the psa_export_key() function for the key type.
*
* For standard key types, the output format is as follows:
*
* - For RSA keys (#PSA_KEY_TYPE_RSA_KEYPAIR or #PSA_KEY_TYPE_RSA_PUBLIC_KEY),
* the format is the DER representation of the public key defined by RFC 5280
* as SubjectPublicKeyInfo.
*
* \param[in] key_slot Slot whose content is to be exported. This must
* be an occupied key slot.
* \param[out] p_data Buffer where the key data is to be written.
* \param[in] data_size Size of the `data` buffer in bytes.
* \param[out] p_data_length On success, the number of bytes
* that make up the key data.
*
* \retval #PSA_SUCCESS
* \param[in] key_slot Slot where the generated key will be placed
* \param[in] type The type of the key to be generated
* \param[in] usage The prescribed usage of the generated key
* Note: Not all Secure Elements support the same
* restrictions that PSA Crypto does (and vice versa).
* Driver developers should endeavor to match the
* usages as close as possible.
* \param[in] bits The size in bits of the key to be generated.
* \param[in] extra Extra parameters for key generation. The
* interpretation of this parameter should match the
* interpretation in the `extra` parameter is the
* `psa_generate_key` function
* \param[in] extra_size The size in bytes of the \p extra buffer
* \param[out] p_pubkey_out The buffer where the public key information will
* be placed
* \param[in] pubkey_out_size The size in bytes of the `p_pubkey_out` buffer
* \param[out] p_pubkey_length Upon successful completion, will contain the
* size of the data placed in `p_pubkey_out`.
*/
typedef psa_status_t (*psa_drv_export_public_key_t)(psa_key_slot_t key,
uint8_t *p_data,
size_t data_size,
size_t *p_data_length);
typedef psa_status_t (*psa_drv_se_generate_key_t)(psa_key_slot_number_t key_slot,
psa_key_type_t type,
psa_key_usage_t usage,
size_t bits,
const void *extra,
size_t extra_size,
uint8_t *p_pubkey_out,
size_t pubkey_out_size,
size_t *p_pubkey_length);
/**
* \brief A struct containing all of the function pointers needed to for key
* management using opaque keys
* \brief A struct containing all of the function pointers needed to for secure
* element key management
*
* PSA Crypto API implementations should populate instances of the table as
* appropriate upon startup.
* appropriate upon startup or at build time.
*
* If one of the functions is not implemented, it should be set to NULL.
*/
typedef struct {
/** Function that performs the key import operation */
psa_drv_opaque_import_key_t *p_import;
/** Function that performs the key destroy operation */
psa_drv_destroy_key_t *p_destroy;
/** Function that performs the key export operation */
psa_drv_export_key_t *p_export;
/** Function that perforsm the public key export operation */
psa_drv_export_public_key_t *p_export_public;
} psa_drv_key_management_t;
/** Function that performs a key import operation */
psa_drv_se_import_key_t p_import;
/** Function that performs a generation */
psa_drv_se_generate_key_t p_generate;
/** Function that performs a key destroy operation */
psa_drv_se_destroy_key_t p_destroy;
/** Function that performs a key export operation */
psa_drv_se_export_key_t p_export;
} psa_drv_se_key_management_t;
/**@}*/
/** \defgroup driver_derivation Key Derivation and Agreement
/** \defgroup driver_derivation Secure Element Key Derivation and Agreement
* Key derivation is the process of generating new key material using an
* existing key and additional parameters, iterating through a basic
* cryptographic function, such as a hash.
@ -825,53 +834,46 @@ typedef struct {
* for both of the flows.
*
* There are two different final functions for the flows,
* `psa_drv_key_derivation_derive` and `psa_drv_key_derivation_export`.
* `psa_drv_key_derivation_derive` is used when the key material should be placed
* in a slot on the hardware and not exposed to the caller.
* `psa_drv_key_derivation_export` is used when the key material should be returned
* to the PSA Cryptographic API implementation.
* `psa_drv_se_key_derivation_derive` and `psa_drv_se_key_derivation_export`.
* `psa_drv_se_key_derivation_derive` is used when the key material should be
* placed in a slot on the hardware and not exposed to the caller.
* `psa_drv_se_key_derivation_export` is used when the key material should be
* returned to the PSA Cryptographic API implementation.
*
* Different key derivation algorithms require a different number of inputs.
* Instead of having an API that takes as input variable length arrays, which
* can be problemmatic to manage on embedded platforms, the inputs are passed
* to the driver via a function, `psa_drv_key_derivation_collateral`, that is
* called multiple times with different `collateral_id`s. Thus, for a key
* to the driver via a function, `psa_drv_se_key_derivation_collateral`, that
* is called multiple times with different `collateral_id`s. Thus, for a key
* derivation algorithm that required 3 paramter inputs, the flow would look
* something like:
* ~~~~~~~~~~~~~{.c}
* psa_drv_key_derivation_setup(kdf_algorithm, source_key, dest_key_size_bytes);
* psa_drv_key_derivation_collateral(kdf_algorithm_collateral_id_0,
* psa_drv_se_key_derivation_setup(kdf_algorithm, source_key, dest_key_size_bytes);
* psa_drv_se_key_derivation_collateral(kdf_algorithm_collateral_id_0,
* p_collateral_0,
* collateral_0_size);
* psa_drv_key_derivation_collateral(kdf_algorithm_collateral_id_1,
* psa_drv_se_key_derivation_collateral(kdf_algorithm_collateral_id_1,
* p_collateral_1,
* collateral_1_size);
* psa_drv_key_derivation_collateral(kdf_algorithm_collateral_id_2,
* psa_drv_se_key_derivation_collateral(kdf_algorithm_collateral_id_2,
* p_collateral_2,
* collateral_2_size);
* psa_drv_key_derivation_derive();
* psa_drv_se_key_derivation_derive();
* ~~~~~~~~~~~~~
*
* key agreement example:
* ~~~~~~~~~~~~~{.c}
* psa_drv_key_derivation_setup(alg, source_key. dest_key_size_bytes);
* psa_drv_key_derivation_collateral(DHE_PUBKEY, p_pubkey, pubkey_size);
* psa_drv_key_derivation_export(p_session_key,
* psa_drv_se_key_derivation_setup(alg, source_key. dest_key_size_bytes);
* psa_drv_se_key_derivation_collateral(DHE_PUBKEY, p_pubkey, pubkey_size);
* psa_drv_se_key_derivation_export(p_session_key,
* session_key_size,
* &session_key_length);
* ~~~~~~~~~~~~~
*/
/**@{*/
/** \brief The hardware-specific key derivation context structure
*
* The contents of this structure are implementation dependent and are
* therefore not described here
*/
typedef struct psa_drv_key_derivation_context_s psa_drv_key_derivation_context_t;
/** \brief Set up a key derivation operation by specifying the algorithm and
* the source key sot
/** \brief A function that Sets up a secure element key derivation operation by
* specifying the algorithm and the source key sot
*
* \param[in,out] p_context A hardware-specific structure containing any
* context information for the implementation
@ -881,12 +883,12 @@ typedef struct psa_drv_key_derivation_context_s psa_drv_key_derivation_context_t
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_key_derivation_setup_t)(psa_drv_key_derivation_context_t *p_context,
typedef psa_status_t (*psa_drv_se_key_derivation_setup_t)(void *p_context,
psa_algorithm_t kdf_alg,
psa_key_slot_t source_key);
psa_key_slot_number_t source_key);
/** \brief Provide collateral (parameters) needed for a key derivation or key
* agreement operation
/** \brief A function that provides collateral (parameters) needed for a secure
* element key derivation or key agreement operation
*
* Since many key derivation algorithms require multiple parameters, it is
* expeced that this function may be called multiple times for the same
@ -900,13 +902,14 @@ typedef psa_status_t (*psa_drv_key_derivation_setup_t)(psa_drv_key_derivation_co
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_key_derivation_collateral_t)(psa_drv_key_derivation_context_t *p_context,
typedef psa_status_t (*psa_drv_se_key_derivation_collateral_t)(void *p_context,
uint32_t collateral_id,
const uint8_t *p_collateral,
size_t collateral_size);
/** \brief Perform the final key derivation step and place the generated key
* material in a slot
/** \brief A function that performs the final secure element key derivation
* step and place the generated key material in a slot
*
* \param[in,out] p_context A hardware-specific structure containing any
* context information for the implementation
* \param[in] dest_key The slot where the generated key material
@ -914,11 +917,11 @@ typedef psa_status_t (*psa_drv_key_derivation_collateral_t)(psa_drv_key_derivati
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_key_derivation_derive_t)(psa_drv_key_derivation_context_t *p_context,
psa_key_slot_t dest_key);
typedef psa_status_t (*psa_drv_se_key_derivation_derive_t)(void *p_context,
psa_key_slot_number_t dest_key);
/** \brief Perform the final step of a key agreement and place the generated
* key material in a buffer
/** \brief A function that performs the final step of a secure element key
* agreement and place the generated key material in a buffer
*
* \param[out] p_output Buffer in which to place the generated key
* material
@ -928,13 +931,14 @@ typedef psa_status_t (*psa_drv_key_derivation_derive_t)(psa_drv_key_derivation_c
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_key_derivation_export_t)(uint8_t *p_output,
typedef psa_status_t (*psa_drv_se_key_derivation_export_t)(void *p_context,
uint8_t *p_output,
size_t output_size,
size_t *p_output_length);
/**
* \brief A struct containing all of the function pointers needed to for key
* derivation and agreement
* \brief A struct containing all of the function pointers needed to for secure
* element key derivation and agreement
*
* PSA Crypto API implementations should populate instances of the table as
* appropriate upon startup.
@ -942,16 +946,18 @@ typedef psa_status_t (*psa_drv_key_derivation_export_t)(uint8_t *p_output,
* If one of the functions is not implemented, it should be set to NULL.
*/
typedef struct {
/** Function that performs the key derivation setup */
psa_drv_key_derivation_setup_t *p_setup;
/** Function that sets the key derivation collateral */
psa_drv_key_derivation_collateral_t *p_collateral;
/** Function that performs the final key derivation step */
psa_drv_key_derivation_derive_t *p_derive;
/** Function that perforsm the final key derivation or agreement and
/** The driver-specific size of the key derivation context */
size_t context_size;
/** Function that performs a key derivation setup */
psa_drv_se_key_derivation_setup_t p_setup;
/** Function that sets key derivation collateral */
psa_drv_se_key_derivation_collateral_t p_collateral;
/** Function that performs a final key derivation step */
psa_drv_se_key_derivation_derive_t p_derive;
/** Function that perforsm a final key derivation or agreement and
* exports the key */
psa_drv_key_derivation_export_t *p_export;
} psa_drv_key_derivation_t;
psa_drv_se_key_derivation_export_t p_export;
} psa_drv_se_key_derivation_t;
/**@}*/