Generates a signature using the v1.5 version of the RSA scheme with the MD5 message digest.
Syntax
IppStatus ippsRSASSASign_MD5_PKCSv15 (const Ipp8u* pMsg, Ipp32u msgLen, Ipp8u* pSign, IppsRSAState* pRSA);
Parameters
pMsg |
Pointer to the plain message to be signed. |
msgLen |
Length of the message. The message can be empty, that is, msgLen==0. |
pSign |
Pointer to the output signature. |
pRSA |
Pointer to the properly initialized IppsRSAState context. |
Description
This function is declared in the ippcp.h file. The function computes the MD5 digest of the input message and generates the signature of the digest using the v1.5 version of the RSA scheme, defined in [PKCS 1.2.1].
Important
The length of the signature being generated equals the length of the RSA modulus, supplied with the IppsRSAState context. Make sure that pSign points to a buffer of the appropriate length.
Return Values
ippStsNoErr |
Indicates no error. Any other value indicates an error or warning. |
ippStsNullPtrErr |
Indicates an error condition if any of the specified pointers is NULL. |
ippStsContextMatchErr |
Indicates an error condition if the RSA context parameter does not match the operation. |
ippStsInvalidCryptoKeyErr |
Indicates an error condition if the RSA context has not been properly set up for the operation. |
ippStsSizeErr |
Indicates an error condition if the length of the RSA modulus is too small (see details in [PKCS 1.2.1] ). |