diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/crypto/hash.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/crypto/hash.h b/include/crypto/hash.h index cee446c59497..4829d2367eda 100644 --- a/include/crypto/hash.h +++ b/include/crypto/hash.h @@ -856,6 +856,25 @@ int crypto_shash_digest(struct shash_desc *desc, const u8 *data, unsigned int len, u8 *out); /** + * crypto_shash_tfm_digest() - calculate message digest for buffer + * @tfm: hash transformation object + * @data: see crypto_shash_update() + * @len: see crypto_shash_update() + * @out: see crypto_shash_final() + * + * This is a simplified version of crypto_shash_digest() for users who don't + * want to allocate their own hash descriptor (shash_desc). Instead, + * crypto_shash_tfm_digest() takes a hash transformation object (crypto_shash) + * directly, and it allocates a hash descriptor on the stack internally. + * Note that this stack allocation may be fairly large. + * + * Context: Any context. + * Return: 0 on success; < 0 if an error occurred. + */ +int crypto_shash_tfm_digest(struct crypto_shash *tfm, const u8 *data, + unsigned int len, u8 *out); + +/** * crypto_shash_export() - extract operational state for message digest * @desc: reference to the operational state handle whose state is exported * @out: output buffer of sufficient size that can hold the hash state |