How do you test a public/private DSA keypair?

Question

Is there an easy way to verify that a given private key matches a given public key? I have a few *.puband a few *.key files, and I need to check w

Answer 1

I always compare an MD5 hash of the modulus using these commands:

Certificate: openssl x509 -noout -modulus -in server.crt | openssl md5
Private Key: openssl rsa -noout -modulus -in server.key | openssl md5
CSR: openssl req -noout -modulus -in server.csr | openssl md5

If the hashes match, then those two files go together.