diff options
| author | Sumit Garg <sumit.garg@linaro.org> | 2018-11-15 12:08:05 +0530 |
|---|---|---|
| committer | Jérôme Forissier <jerome.forissier@linaro.org> | 2018-12-18 10:45:46 +0100 |
| commit | b8bb0afa738e6038bbd92b57742aa2526df9f20a (patch) | |
| tree | fcd90ee302bae4322ada3eb2e495db23696a9c3f /core/include | |
| parent | 5481559069fd1c671e041a96d35e63f134ea3d60 (diff) | |
libtomcrypt: Import SHA512/256 approved hash algorithm
SHA-512/256 is an approved hash algorithm and a vetted conditioner as
per NIST.SP.800-90B spec. We have used it to condition raw thermal
sensor noise on Developerbox to condense entropy.
It is imported from libtomcrypt:
Git url: https://github.com/libtom/libtomcrypt.git, release tag: v1.18.0.
Signed-off-by: Sumit Garg <sumit.garg@linaro.org>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Joakim Bech <joakim.bech@linaro.org>
Diffstat (limited to 'core/include')
| -rw-r--r-- | core/include/crypto/crypto.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/core/include/crypto/crypto.h b/core/include/crypto/crypto.h index 2018d3cf..54a5f74f 100644 --- a/core/include/crypto/crypto.h +++ b/core/include/crypto/crypto.h @@ -256,6 +256,17 @@ TEE_Result crypto_acipher_ecc_shared_secret(struct ecc_keypair *private_key, TEE_Result hash_sha256_check(const uint8_t *hash, const uint8_t *data, size_t data_size); +/* + * Computes a SHA-512/256 hash, vetted conditioner as per NIST.SP.800-90B. + * It doesn't require crypto_init() to be called in advance and has as few + * dependencies as possible. + * + * This function could be used inside interrupt context where the crypto + * library can't be used due to mutex handling. + */ +TEE_Result hash_sha512_256_compute(uint8_t *digest, const uint8_t *data, + size_t data_size); + #define CRYPTO_RNG_SRC_IS_QUICK(sid) (!!((sid) & 1)) /* |