Hello,
IPP v9.0
I've combed through the cryptography manual and looked at options for ippsRSASign_PKCS1v15 but am looking for not using a hash digest. At the moment am using the base ippsRSA_Encrypt to make signatures and setting up an RSA key for the purpose of signing. But it has some performance overhead from loading the message into a BigNumberState and setting things up. Have also looked at using the function ippsRSAEncrypt_PKCSv15 since I'm using the PKCSv15 format anyway, but in using it I would need access to altering the first couple bytes of the padding which it seems the function does not allow to be done ("00020001FFFFFFFFF" attempt with using the padding pointer parameter)
Is there a way to go about just signing a message without having a hash involved that may have less overhead than my current approach?
Regards,
Jacob