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crypto: add ability to query hash digest len

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Add a qcrypto_hash_digest_len() method which allows querying of
the raw digest size for a given hash algorithm.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrange 2015-10-23 16:14:50 +01:00
parent dd2bf9eb95
commit 7b36064c90
3 changed files with 31 additions and 0 deletions
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11
include/crypto/hash.h
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@ -44,6 +44,17 @@ typedef enum {
*/
gboolean qcrypto_hash_supports(QCryptoHashAlgorithm alg);
/**
* qcrypto_hash_digest_len:
* @alg: the hash algorithm
*
* Determine the size of the hash digest in bytes
*
* Returns: the digest length in bytes
*/
size_t qcrypto_hash_digest_len(QCryptoHashAlgorithm alg);
/**
* qcrypto_hash_bytesv:
* @alg: the hash algorithm