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pk_{sign,verify}() now accept hash_len = 0

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Manuel Pégourié-Gonnard 2013-08-22 14:55:30 +02:00
parent a20c58c6f1
commit bfe32efb9b
4 changed files with 48 additions and 45 deletions
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18
include/polarssl/pk.h
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@ -270,14 +270,19 @@ int pk_can_do( pk_context *ctx, pk_type_t type );
* \brief Verify signature
*
* \param ctx PK context to use
* \param md_alg Hash algorithm used
* \param md_alg Hash algorithm used (see notes)
* \param hash Hash of the message to sign
* \param hash_len Hash length
* \param hash_len Hash length or 0 (see notes)
* \param sig Signature to verify
* \param sig_len Signature length
*
* \return 0 on success (signature is valid),
* or a specific error code.
*
* \note If hash_len is 0, then the length associated with md_alg
* is used instead, or an error returned if it is invalid.
*
* \note md_alg may be POLARSSL_MD_NONE, only if hash_len != 0
*/
int pk_verify( pk_context *ctx, md_type_t md_alg,
const unsigned char *hash, size_t hash_len,
@ -287,15 +292,20 @@ int pk_verify( pk_context *ctx, md_type_t md_alg,
* \brief Make signature
*
* \param ctx PK context to use
* \param md_alg Hash algorithm used
* \param md_alg Hash algorithm used (see notes)
* \param hash Hash of the message to sign
* \param hash_len Hash length
* \param hash_len Hash length or 0 (see notes)
* \param sig Place to write the signature
* \param sig_len Number of bytes written
* \param f_rng RNG function
* \param p_rng RNG parameter
*
* \return 0 on success, or a specific error code.
*
* \note If hash_len is 0, then the length associated with md_alg
* is used instead, or an error returned if it is invalid.
*
* \note md_alg may be POLARSSL_MD_NONE, only if hash_len != 0
*/
int pk_sign( pk_context *ctx, md_type_t md_alg,
const unsigned char *hash, size_t hash_len,