Ruby

Export Digital Certificate's Public Key

See more Certificates Examples

The ExportPublicKey method can be called to get a certificate's public key. It can then be saved to any of a number of formats: (1) OpenSSL DER, (2) OpenSSL PEM, (3) RSA DER, (4) XML. Ruby

require 'chilkat'

success = false

cert = Chilkat::CkCert.new()

# LoadFromFile will load virtually any certificate format file.
# It will auto-recognize the format and load appropiately.
success = cert.LoadFromFile("/Users/chilkat/testData/cer/chilkat.cer")
if (success == false)
    print cert.lastErrorText() + "\n";
    exit
end

# Get the public key:
pubkey = Chilkat::CkPublicKey.new()
cert.GetPublicKey(pubkey)

# Save to various formats:
success = pubkey.SaveDerFile(false,"/Users/chilkat/testData/pubkeys/chilkat_pkcs8.der")
if (success != true)
    print pubkey.lastErrorText() + "\n";
    exit
end

success = pubkey.SavePemFile(false,"/Users/chilkat/testData/pubkeys/chilkat.pem")
if (success != true)
    print pubkey.lastErrorText() + "\n";
    exit
end

success = pubkey.SaveDerFile(true,"/Users/chilkat/testData/pubkeys/chilkat_pkcs1.der")
if (success != true)
    print pubkey.lastErrorText() + "\n";
    exit
end

success = pubkey.SaveXmlFile("/Users/chilkat/testData/pubkeys/chilkat.xml")
if (success != true)
    print pubkey.lastErrorText() + "\n";
    exit
end

print "Public key exported to all file formats." + "\n";