Verify signature using RSASSA-PSS padding in OpenSSL 3

[amartin at xtec.com]

Hi,

 

How I can do an RSA_verify_PKCS1_PSS() in OpenSSl 3?

 

In OpenSSL 1.0.2 I used:

 

unsigned char * decrypted_sign = (unsigned char
*)OPENSSL_malloc((int)signature.length());

ret = RSA_public_decrypt((int)signature.length(), (unsigned char
*)signature.c_str(), decrypted_sign, rsa, RSA_NO_PADDING);

ret = RSA_verify_PKCS1_PSS(rsa, (unsigned char *)strPaddedMsg.c_str(),
EVP_sha256(), decrypted_sign, -2);

 

Thanks,

 

Martin

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