# Question on DSA Verify

Vincent yu (vyu@certco.com)
Wed, 13 Aug 1997 15:18:26 -0400

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    From: "Vincent yu"<vyu@certco.com>

    To: java-security@web2.javasoft.com

    Date: Wed, 13 Aug 1997 15:18:26 -0400

    Subject: Question on DSA Verify

I am still very confuse after reading the document CryptoSpec.html. I need
to verify a DSA Signature. I have already public key, p, q, g, r, s and
the text to be verify. From the example, it only require public key, data,
and signature. It seems that it doesn't requre p, q. g. I see that p,q,g
are only required in key-generation. But I think p,q,g are required to
perform the calculation of DSA verify. It will be very helpful if you can
give me an example on DSA Verify and also DSA Sign assuming that I already
have public key/private key, p, q, g, text and r,s(if verify).

Also the document mention about default provider "SUN". Where can I find
the source java code for that package.

I will be very appreciated if you can help me.
Thanks, Vincent

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