I've tried again to hash the already hashed data, but no way to verify it, code here: http://pastie.org/3309525
I can't understand what is wrong now, where I can find some guide or documentation ? Thanks ! On 02/03/2012 03:26 PM, Dr. Stephen Henson wrote: > On Fri, Feb 03, 2012, francesco.petru...@innovery.it wrote: > >> Have you miss the OpenSSL_add_all_algorithms() initialization? >> >> >> >> Da: owner-openssl-us...@openssl.org [mailto:owner-openssl-us...@openssl.org] >> Per conto di Roberto Martelloni >> Inviato: venerdì 3 febbraio 2012 12:31 >> A: openssl-users@openssl.org >> Oggetto: Unable to verify a RSA SHA512 signature maded from CLI from a C >> source code. >> >> >> >> Hello to all, >> >> I can't verify a signature from a C code but maded with openssl command line >> . >> Anyone can give me some hints ? >> >> I create my RSA key pair with this command: >> /usr/bin/openssl genrsa -out RSA-1024.key 1024 >> /usr/bin/openssl rsa -in RSA-1024.key -pubout > RSA-1024-public.key >> >> I made the signature with: >> /usr/bin/openssl dgst -binary -sha512 -sign RSA-1024.key -out >> serial.SHA512.asc serial.SHA512 >> >> If I verify it from CLI all work >> /usr/bin/openssl dgst -sha512 -verify RSA-1024-public.key -signature >> serial.txt.SHA512.asc serial.txt.SHA512 >> Verified OK >> >> But when I try to check it from source code all get wrong. >> >> Here the code http://nopaste.info/da38ec303b.html >> >> What is wrong ? >> > > The OP is doing two things wrong.. 1. Posting in HTML and 2. If you call > RSA_verify() it expects the digest of the data and not the data itself. You > can digest and verify using EVP_Verify*() functions, see manual pages and > examples. > > 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 > User Support Mailing List openssl-users@openssl.org > Automated List Manager majord...@openssl.org -- Roberto Martelloni ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager majord...@openssl.org
