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Doc only: Add psa_aead_set_lengths() for the sake of CCM
This commit is contained in:
Gilles Peskine
parent
a05602d100
commit
bc59c855c4
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@ -1974,6 +1974,10 @@ static psa_aead_operation_t psa_aead_operation_init(void);
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* documentation for #psa_aead_operation_t, e.g.
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* PSA_AEAD_OPERATION_INIT.
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* -# Call psa_aead_encrypt_setup() to specify the algorithm and key.
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* -# If needed, call psa_aead_set_lengths() to specify the length of the
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* inputs to the subsequent calls to psa_aead_update_ad() and
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* psa_aead_update(). See the documentation of psa_aead_set_lengths()
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* for details.
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* -# Call either psa_aead_generate_nonce() or psa_aead_set_nonce() to
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* generate or set the nonce. You should use
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* psa_aead_generate_nonce() unless the protocol you are implementing
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@ -2035,6 +2039,10 @@ psa_status_t psa_aead_encrypt_setup(psa_aead_operation_t *operation,
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* documentation for #psa_aead_operation_t, e.g.
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* PSA_AEAD_OPERATION_INIT.
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* -# Call psa_aead_decrypt_setup() to specify the algorithm and key.
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* -# If needed, call psa_aead_set_lengths() to specify the length of the
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* inputs to the subsequent calls to psa_aead_update_ad() and
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* psa_aead_update(). See the documentation of psa_aead_set_lengths()
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* for details.
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* -# Call psa_aead_set_nonce() with the nonce for the decryption.
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* -# Call psa_aead_update_ad() zero, one or more times, passing a fragment
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* of the non-encrypted additional authenticated data each time.
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@ -2150,6 +2158,44 @@ psa_status_t psa_aead_set_nonce(psa_aead_operation_t *operation,
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const unsigned char *nonce,
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size_t nonce_length);
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/** Declare the lengths of the message and additional data for AEAD.
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*
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* The application must call this function before calling
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* psa_aead_update_ad() or psa_aead_update() if the algorithm for
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* the operation requires it. If the algorithm does not require it,
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* calling this function is optional, but if this function is called
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* then the implementation must enforce the lengths.
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*
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* You may call this function before or after setting the nonce with
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* psa_aead_set_nonce() or psa_aead_generate_nonce().
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*
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* - For #PSA_ALG_CCM, calling this function is required.
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* - For the other AEAD algorithms defined in this specification, calling
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* this function is not required.
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* - For vendor-defined algorithm, refer to the vendor documentation.
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*
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* \param[in,out] operation Active AEAD operation.
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* \param ad_length Size of the non-encrypted additional
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* authenticated data in bytes.
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* \param plaintext_length Size of the plaintext to encrypt in bytes.
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*
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* \retval #PSA_SUCCESS
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* Success.
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* \retval #PSA_ERROR_BAD_STATE
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* The operation state is not valid (not set up, already completed,
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* or psa_aead_update_ad() or psa_aead_update() already called).
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* \retval #PSA_ERROR_INVALID_ARGUMENT
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* At least one of the lengths is not acceptable for the chosen
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* algorithm.
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* \retval #PSA_ERROR_INSUFFICIENT_MEMORY
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* \retval #PSA_ERROR_COMMUNICATION_FAILURE
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* \retval #PSA_ERROR_HARDWARE_FAILURE
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* \retval #PSA_ERROR_TAMPERING_DETECTED
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*/
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psa_status_t psa_aead_set_lengths(psa_aead_operation_t *operation,
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size_t ad_length,
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size_t plaintext_length);
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/** Pass additional data to an active AEAD operation.
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*
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* Additional data is authenticated, but not encrypted.
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@ -2180,6 +2226,9 @@ psa_status_t psa_aead_set_nonce(psa_aead_operation_t *operation,
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* \retval #PSA_ERROR_BAD_STATE
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* The operation state is not valid (not set up, nonce not set,
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* psa_aead_update() already called, or operation already completed).
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* \retval #PSA_ERROR_INVALID_ARGUMENT
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* The total input length overflows the additional data length that
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* was previously specified with psa_aead_set_lengths().
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* \retval #PSA_ERROR_INSUFFICIENT_MEMORY
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* \retval #PSA_ERROR_COMMUNICATION_FAILURE
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* \retval #PSA_ERROR_HARDWARE_FAILURE
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@ -2230,6 +2279,13 @@ psa_status_t psa_aead_update_ad(psa_aead_operation_t *operation,
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* or already completed).
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* \retval #PSA_ERROR_BUFFER_TOO_SMALL
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* The size of the \p output buffer is too small.
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* \retval #PSA_ERROR_INVALID_ARGUMENT
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* The total length of input to psa_aead_update_ad() so far is
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* less than the additional data length that was previously
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* specified with psa_aead_set_lengths().
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* \retval #PSA_ERROR_INVALID_ARGUMENT
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* The total input length overflows the plaintext length that
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* was previously specified with psa_aead_set_lengths().
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* \retval #PSA_ERROR_INSUFFICIENT_MEMORY
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* \retval #PSA_ERROR_COMMUNICATION_FAILURE
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* \retval #PSA_ERROR_HARDWARE_FAILURE
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@ -2281,6 +2337,14 @@ psa_status_t psa_aead_update(psa_aead_operation_t *operation,
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* decryption, or already completed).
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* \retval #PSA_ERROR_BUFFER_TOO_SMALL
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* The size of the \p output buffer is too small.
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* \retval #PSA_ERROR_INVALID_ARGUMENT
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* The total length of input to psa_aead_update_ad() so far is
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* less than the additional data length that was previously
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* specified with psa_aead_set_lengths().
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* \retval #PSA_ERROR_INVALID_ARGUMENT
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* The total length of input to psa_aead_update() so far is
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* less than the plaintext length that was previously
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* specified with psa_aead_set_lengths().
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* \retval #PSA_ERROR_INSUFFICIENT_MEMORY
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* \retval #PSA_ERROR_COMMUNICATION_FAILURE
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* \retval #PSA_ERROR_HARDWARE_FAILURE
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@ -2316,6 +2380,14 @@ psa_status_t psa_aead_finish(psa_aead_operation_t *operation,
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* encryption, or already completed).
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* \retval #PSA_ERROR_BUFFER_TOO_SMALL
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* The size of the \p output buffer is too small.
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* \retval #PSA_ERROR_INVALID_ARGUMENT
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* The total length of input to psa_aead_update_ad() so far is
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* less than the additional data length that was previously
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* specified with psa_aead_set_lengths().
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* \retval #PSA_ERROR_INVALID_ARGUMENT
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* The total length of input to psa_aead_update() so far is
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* less than the plaintext length that was previously
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* specified with psa_aead_set_lengths().
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* \retval #PSA_ERROR_INSUFFICIENT_MEMORY
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* \retval #PSA_ERROR_COMMUNICATION_FAILURE
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* \retval #PSA_ERROR_HARDWARE_FAILURE
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