If you're extracting a public key from an X.509 certificate, then you probably want to use RSA. I've found Crypt::OpenSSL::RSA to be a pretty good module for doing RSA.
It is possible to embed other key types (non-RSA, such as DSA) into an X.509 certificate, but that doesn't yet seem common.
In reply to Re: Verify signed data
by tobyink
in thread Verify signed data
by rjschwei
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