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- Added support for PKCS#1 v2.1 encoding and thus support for the RSAES-OAEP and RSASSA-PSS operations (enabled by POLARSSL_PKCS1_V21)

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This commit is contained in:
Paul Bakker 2011-03-08 14:16:06 +00:00
parent fea43a2501
commit 9dcc32236b
16 changed files with 1884 additions and 123 deletions
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29
include/polarssl/rsa.h
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@ -144,8 +144,12 @@ typedef struct
mpi RP; /*!< cached R^2 mod P */
mpi RQ; /*!< cached R^2 mod Q */
int padding; /*!< 1.5 or OAEP/PSS */
int hash_id; /*!< hash identifier */
int padding; /*!< RSA_PKCS_V15 for 1.5 padding and
RSA_PKCS_v21 for OAEP/PSS */
int hash_id; /*!< Hash identifier of md_type_t as
specified in the md.h header file
for the EME-OAEP and EMSA-PSS
encoding */
}
rsa_context;
@ -162,9 +166,6 @@ extern "C" {
*
* \note The hash_id parameter is actually ignored
* when using RSA_PKCS_V15 padding.
*
* \note Currently, RSA_PKCS_V21 padding
* is not supported.
*/
void rsa_init( rsa_context *ctx,
int padding,
@ -247,7 +248,7 @@ int rsa_private( rsa_context *ctx,
* \brief Add the message padding, then do an RSA operation
*
* \param ctx RSA context
* \param f_rng RNG function
* \param f_rng RNG function (Needed for padding and PKCS#1 v2.1 encoding)
* \param p_rng RNG parameter
* \param mode RSA_PUBLIC or RSA_PRIVATE
* \param ilen contains the plaintext length
@ -292,6 +293,8 @@ int rsa_pkcs1_decrypt( rsa_context *ctx,
* \brief Do a private RSA to sign a message digest
*
* \param ctx RSA context
* \param f_rng RNG function (Needed for PKCS#1 v2.1 encoding)
* \param p_rng RNG parameter
* \param mode RSA_PUBLIC or RSA_PRIVATE
* \param hash_id SIG_RSA_RAW, SIG_RSA_MD{2,4,5} or SIG_RSA_SHA{1,224,256,384,512}
* \param hashlen message digest length (for SIG_RSA_RAW only)
@ -303,8 +306,16 @@ int rsa_pkcs1_decrypt( rsa_context *ctx,
*
* \note The "sig" buffer must be as large as the size
* of ctx->N (eg. 128 bytes if RSA-1024 is used).
*
* \note In case of PKCS#1 v2.1 encoding keep in mind that
* the hash_id in the RSA context is the one used for the
* encoding. hash_id in the function call is the type of hash
* that is encoded. According to RFC 3447 it is advised to
* keep both hashes the same.
*/
int rsa_pkcs1_sign( rsa_context *ctx,
int (*f_rng)(void *),
void *p_rng,
int mode,
int hash_id,
int hashlen,
@ -326,6 +337,12 @@ int rsa_pkcs1_sign( rsa_context *ctx,
*
* \note The "sig" buffer must be as large as the size
* of ctx->N (eg. 128 bytes if RSA-1024 is used).
*
* \note In case of PKCS#1 v2.1 encoding keep in mind that
* the hash_id in the RSA context is the one used for the
* verification. hash_id in the function call is the type of hash
* that is verified. According to RFC 3447 it is advised to
* keep both hashes the same.
*/
int rsa_pkcs1_verify( rsa_context *ctx,
int mode,