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Extract the block size from the key type encoding

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This commit is contained in:
Gilles Peskine 2019-12-02 17:44:12 +01:00
parent 7bfcfac164
commit 2eea95cb5d
1 changed files with 5 additions and 7 deletions
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12
include/psa/crypto_values.h
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@ -580,6 +580,8 @@
*/
#define PSA_DH_GROUP_VENDOR_MAX ((psa_dh_group_t) 0x01fd)
#define PSA_GET_KEY_TYPE_BLOCK_SIZE_EXPONENT(type) \
(((type) >> 24) & 7)
/** The block size of a block cipher.
*
* \param type A cipher key type (value of type #psa_key_type_t).
@ -599,13 +601,9 @@
* \warning This macro may evaluate its argument multiple times.
*/
#define PSA_BLOCK_CIPHER_BLOCK_SIZE(type) \
( \
(type) == PSA_KEY_TYPE_AES ? 16 : \
(type) == PSA_KEY_TYPE_DES ? 8 : \
(type) == PSA_KEY_TYPE_CAMELLIA ? 16 : \
(type) == PSA_KEY_TYPE_ARC4 ? 1 : \
(type) == PSA_KEY_TYPE_CHACHA20 ? 1 : \
0)
(((type) & PSA_KEY_TYPE_CATEGORY_MASK) == PSA_KEY_TYPE_CATEGORY_SYMMETRIC ? \
1u << PSA_GET_KEY_TYPE_BLOCK_SIZE_EXPONENT(type) : \
0u)
/** Vendor-defined algorithm flag.
*