Thanks for reply.
Correct me if I am wrong, the R point, which is the "ephemeral" or
temporary point on the elliptic curve, is calculated in the
ECDSA_sign_setup function. Is that right? If it is, then its value is also
lost in that function because the memory containing is freed at the end of
the
On 25/05/12 14:41, Khuc, Chuong D. wrote:
Wow, that is a lot of good information. Thanks, Matt. And I am still trying to
digest the first paragraph. So do you mean the R value that I mentioned is
actually the public key?
No, R is just a random point...different for every signature. The public
Wow, that is a lot of good information. Thanks, Matt. And I am still trying to
digest the first paragraph. So do you mean the R value that I mentioned is
actually the public key? And if I was provided
with a private key, are the following lines of code appropriate to compute
the public key and ge
On 24/05/12 14:40, Khuc, Chuong D. wrote:
Hello,
I was able to sign my message using the ECDSA 256 function from openssl:
ECDSA_SIG *signature = ECDSA_do_sign( &message[0], message_length, eckey);
And the sign is verified to be valid also. And my question is about
the compression of the signatur
Hello,
I was able to sign my message using the ECDSA 256 function from openssl:
ECDSA_SIG *signature = ECDSA_do_sign( &message[0], message_length, eckey);
And the sign is verified to be valid also. And my question is about the
compression of the signature. I understand that the signature has an r
