On Fri, Oct 09, 2009, Kirk81 wrote: > > Hello, > > I found your example of ECDSA_do_sign/verify very uselful. > > Now I'm trying to modify the code and I would like to use an SHA-256's > message digest in your sign function. Something like: > > unsigned char obuf[32]; > > SHA-256(data, len, obuf); > > // now, in obuf there's the message digest (calculated using the SHA-256 > function). > > but I have an error in the ECDSA_do_sign function when I pass the message > digest in this way: > sig = ECDSA_do_sign(obuf, 32, pkey); > > what's wrong? > > Problably I'm missing the conversion between data types: I mean, something > used to convert the output of the SHA to an integer. In this case: which > function should I use and how? >
I'd suggest you try OpenSSL 1.0.0 and the EVP interface instead. Steve. -- Dr Stephen N. Henson. OpenSSL project core developer. Commercial tech support now available see: http://www.openssl.org ______________________________________________________________________ OpenSSL Project http://www.openssl.org Development Mailing List openssl-dev@openssl.org Automated List Manager majord...@openssl.org
