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Export the PSS padding functions.

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(system/keymaster is using them now.)

Change-Id: I8fba501005b9318b7d3a76bf1715fb772b23c49d
Reviewed-on: https://boringssl-review.googlesource.com/4092
Reviewed-by: Adam Langley <agl@google.com>
This commit is contained in:
Adam Langley
2015-03-31 22:26:57 +00:00
parent 32ab7b0e74
commit 20b64fd19d
2 changed files with 30 additions and 9 deletions
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crypto/rsa/internal.h
-9
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@@ -113,15 +113,6 @@ int RSA_padding_add_none(uint8_t *to, unsigned to_len, const uint8_t *from,
int RSA_padding_check_none(uint8_t *to, unsigned to_len, const uint8_t *from,
unsigned from_len);
/* RSA_verify_PKCS1_PSS_mgf1 */
int RSA_verify_PKCS1_PSS_mgf1(RSA *rsa, const uint8_t *mHash,
const EVP_MD *Hash, const EVP_MD *mgf1Hash,
const uint8_t *EM, int sLen);
int RSA_padding_add_PKCS1_PSS_mgf1(RSA *rsa, uint8_t *EM, const uint8_t *mHash,
const EVP_MD *Hash, const EVP_MD *mgf1Hash,
int sLen);
/* RSA_private_transform calls either the method-specific |private_transform|
* function (if given) or the generic one. See the comment for
* |private_transform| in |rsa_meth_st|. */
include/openssl/rsa.h
+30
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@@ -285,6 +285,36 @@ OPENSSL_EXPORT int RSA_check_key(const RSA *rsa);
* otherwise. */
OPENSSL_EXPORT int RSA_recover_crt_params(RSA *rsa);
/* RSA_verify_PKCS1_PSS_mgf1 verifies that |EM| is a correct PSS padding of
* |mHash|, where |mHash| is a digest produced by |Hash|. |EM| must point to
* exactly |RSA_size(rsa)| bytes of data. The |mgf1Hash| argument specifies the
* hash function for generating the mask. If NULL, |Hash| is used. The |sLen|
* argument specifies the expected salt length in bytes. If |sLen| is -1 then
* the salt length is the same as the hash length. If -2, then the salt length
* is maximal and is taken from the size of |EM|.
*
* It returns one on success or zero on error. */
OPENSSL_EXPORT int RSA_verify_PKCS1_PSS_mgf1(RSA *rsa, const uint8_t *mHash,
const EVP_MD *Hash,
const EVP_MD *mgf1Hash,
const uint8_t *EM, int sLen);
/* RSA_padding_add_PKCS1_PSS_mgf1 writes a PSS padding of |mHash| to |EM|,
* where |mHash| is a digest produced by |Hash|. |RSA_size(rsa)| bytes of
* output will be written to |EM|. The |mgf1Hash| argument specifies the hash
* function for generating the mask. If NULL, |Hash| is used. The |sLen|
* argument specifies the expected salt length in bytes. If |sLen| is -1 then
* the salt length is the same as the hash length. If -2, then the salt length
* is maximal given the space in |EM|.
*
* It returns one on success or zero on error. */
OPENSSL_EXPORT int RSA_padding_add_PKCS1_PSS_mgf1(RSA *rsa, uint8_t *EM,
const uint8_t *mHash,
const EVP_MD *Hash,
const EVP_MD *mgf1Hash,
int sLen);
/* ASN.1 functions. */