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Add rsa_rsassa_pss_verify_ext()

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This commit is contained in:
Manuel Pégourié-Gonnard 2014-06-03 11:44:06 +02:00
parent 920e1cd5e2
commit 5ec628a2b9
4 changed files with 184 additions and 11 deletions
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38
include/polarssl/rsa.h
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@ -65,6 +65,8 @@
#define RSA_SIGN 1
#define RSA_CRYPT 2
#define RSA_SALT_LEN_ANY -1
/*
* The above constants may be used even if the RSA module is compile out,
* eg for alternative (PKCS#11) RSA implemenations in the PK layers.
@ -544,6 +546,7 @@ int rsa_rsassa_pkcs1_v15_verify( rsa_context *ctx,
/**
* \brief Perform a PKCS#1 v2.1 PSS verification (RSASSA-PSS-VERIFY)
* (This is the "simple" version.)
*
* \param ctx points to an RSA public key
* \param f_rng RNG function (Only needed for RSA_PRIVATE)
@ -575,6 +578,41 @@ int rsa_rsassa_pss_verify( rsa_context *ctx,
const unsigned char *hash,
const unsigned char *sig );
/**
* \brief Perform a PKCS#1 v2.1 PSS verification (RSASSA-PSS-VERIFY)
* (This is the version with "full" options.)
*
* \param ctx points to an RSA public key
* \param f_rng RNG function (Only needed for RSA_PRIVATE)
* \param p_rng RNG parameter
* \param mode RSA_PUBLIC or RSA_PRIVATE
* \param md_alg a POLARSSL_MD_* (use POLARSSL_MD_NONE for signing raw data)
* \param hashlen message digest length (for POLARSSL_MD_NONE only)
* \param hash buffer holding the message digest
* \param mgf1_hash_id message digest used for mask generation
* \param expected_salt_len Length of the salt used in padding, use
* RSA_SALT_LEN_ANY to accept any salt length
* \param sig buffer holding the ciphertext
*
* \return 0 if the verify operation was successful,
* or an POLARSSL_ERR_RSA_XXX error code
*
* \note The "sig" buffer must be as large as the size
* of ctx->N (eg. 128 bytes if RSA-1024 is used).
*
* \note The hash_id in the RSA context is ignored.
*/
int rsa_rsassa_pss_verify_ext( rsa_context *ctx,
int (*f_rng)(void *, unsigned char *, size_t),
void *p_rng,
int mode,
md_type_t md_alg,
unsigned int hashlen,
const unsigned char *hash,
md_type_t mgf1_hash_id,
int expected_salt_len,
const unsigned char *sig );
/**
* \brief Copy the components of an RSA context
*