In a test program, I call the function in OpenSSL0.9.5a

HMAC(EVP_sha1(),secret,secret_len,seed,seed_len,a,&t_len);
HMAC(EVP_sha1(),secret,secret_len,seed,seed_len,b,&b_len);

the "secret" and "seed" are identical in two functions, but the output "a" and "b" are 
different. I think the "a" and "b" should be same.
Who can tell me why the result is not same as I think?

            changkun
            [EMAIL PROTECTED]

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