Verify a signature

I need to verify a signature present in an Attribute Certificate (so it's not a standard X.509 certificate). The verifier public key is in a X509 standard certificate (in PKCS#7 format). Can you tell me where I can find the documentation to do it and what are the API required? (if you have

Re: Verify a signature

Hi Andrea, Try this and ajust according to your configuration # verify the signature [averroes@dev PWC]$ openssl smime -pk7out \ -in ../trash/messages-22-11-2001.sig | openssl pkcs7 -print_certs -noout Regards #-- Averroes Andrea Nagar wrote: I need to verify a signature present in an

[openssl-users] How can i verify a signature without knowing the private key? not by openssl command but openssl function.

Hi guys i want to write two programd to learn the details of ecdsa signature. program A read the private key from private.pem, sign a string, like "abcde1234", save the signature as sig.pem. program B read the public key from pub.pem, read the sig.pem, and verify the signature. c

Re: [openssl-users] How can i verify a signature without knowing the private key? not by openssl command but openssl function.

with the public key, compares it to the hash of the data. If the two hashes match, the data is authentic. From: openssl-users [mailto:openssl-users-boun...@openssl.org] On Behalf Of Sent: Friday, September 25, 2015 3:52 AM To: openssl-users Subject: [openssl-users] How can i verify a signatu

Re: [openssl-users] How can i verify a signature without knowing the private key? not by openssl command but openssl function.

Ignore me. I completely misread your email. From: openssl-users [mailto:openssl-users-boun...@openssl.org] On Behalf Of Scott Neugroschl Sent: Friday, September 25, 2015 10:32 AM To: openssl-users@openssl.org Subject: Re: [openssl-users] How can i verify a signature without knowing the private