PSA_HASH_LENGTH macro

The size of the output of psa_hash_finish(), in bytes. This is also the hash size that psa_hash_verify() expects.

Syntax

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Declaration

from crypto_sizes.h:60

#define PSA_HASH_LENGTH(alg) \ ( \ PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_MD5 ? 16u : \ PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_RIPEMD160 ? 20u : \ PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_1 ? 20u : \ PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_224 ? 28u : \ PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_256 ? 32u : \ PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_384 ? 48u : \ PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512 ? 64u : \ PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512_224 ? 28u : \ PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512_256 ? 32u : \ PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_224 ? 28u : \ PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_256 ? 32u : \ PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_384 ? 48u : \ PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_512 ? 64u : \ 0u)

Arguments

Argument

Description

alg

A hash algorithm (\c PSA_ALG_XXX value such that #PSA_ALG_IS_HASH(\p alg) is true), or an HMAC algorithm (#PSA_ALG_HMAC(\c hash_alg) where \c hash_alg is a hash algorithm).

Return value

The hash size for the specified hash algorithm. If the hash algorithm is not recognized, return 0.

References

Code

Location

#define PSA_HASH_LENGTH(alg) \

crypto_sizes.h:60

PSA_ALG_IS_HMAC(alg) ? PSA_HASH_LENGTH(PSA_ALG_HMAC_GET_HASH(alg)) : \

crypto_sizes.h:330

operation->mac_size = PSA_HASH_LENGTH(hash_alg);

psa_crypto.c:5486

uint8_t hash_length = PSA_HASH_LENGTH(hash_alg);

psa_crypto.c:5708

uint8_t hash_length = PSA_HASH_LENGTH(hash_alg);

psa_crypto.c:5830

operation->capacity = PSA_HASH_LENGTH(PSA_ALG_SHA_256);

psa_crypto.c:6604

size_t hash_size = PSA_HASH_LENGTH(hash_alg);

psa_crypto.c:6625

size_t actual_hash_length = PSA_HASH_LENGTH(operation->alg);

psa_crypto_hash.c:348

size_t hash_size = PSA_HASH_LENGTH(hash_alg);

psa_crypto_mac.c:39

PSA_HASH_LENGTH macro

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