DLPSignDSA¶
Performs the DSA digital signature signing operation.
Syntax¶
IppStatus ippsDLPSignDSA(const IppsBigNumState* pMsg, const IppsBigNumState* pPrivate, IppsBigNumState* pSignR, IppsBigNumState* pSignS, IppsDLPState* pCtx);
Include Files¶
ippcp.h
Parameters¶
pMsg |
Pointer to the message representation msgRep to be signed. |
pPrivate |
Pointer to the signer’s private key privKey. |
pSignR |
Pointer to the r-component of the signature. |
pSignS |
Pointer to the s-component of the signature. |
pCtx |
Pointer to the cryptosystem context. |
Description¶
The function performs the DSA digital signature signing operation provided that the ephemeral signer’s key pair (both private and public) was previously computed (generated by DLPGenKeyPair or computed by DLPPublicKey) and then set up into the DLP context by the DLPSetKeyPair function.
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 context parameter does not match the operation. |
ippStsIncompleteContextErr |
Indicates an error condition if the cryptosystem context has not been properly set up. |
ippStsMessageErr |
Indicates an error condition if the value of msgRep is greater than the multiplicative subgroup characteristic (q). |
ippStsInvalidPrivateKey |
Indicates an error condition if an illegal value has been assigned to privKey. |
ippStsRangeErr |
Indicates an error condition if any of the signature components has not enough space. |