To install the argon.org CA certificate select this link and follow the prompts your browser gives you. If it asks you whether to open or save the file, choose "open". If this doesn't work with your browser (it only lets you save the file, or opening it displays it on the screen instead of opening a special window), there are some good browser-specific notes at the Rutgers RULink project. If you have any questions please contact ca@argon.org.
Here's the certificate revocation list (CRL).
For most people, the prefered way to access the certificate is via the link above. Here are the certificate in PEM format and CRL in PEM format for when they're useful.
-----BEGIN CERTIFICATE----- MIIDaDCCAtGgAwIBAgIBADANBgkqhkiG9w0BAQQFADCBhTELMAkGA1UEBhMCVVMx ETAPBgNVBAgTCFZpcmdpbmlhMRgwFgYDVQQHEw9DaGFybG90dGVzdmlsbGUxFTAT BgNVBAoTDGFyZ29uLm9yZyBDQTEVMBMGA1UEAxMMYXJnb24ub3JnIENBMRswGQYJ KoZIhvcNAQkBFgxjYUBhcmdvbi5vcmcwHhcNMDIwODIyMTIxOTU2WhcNMTIwODE5 MTIxOTU2WjCBhTELMAkGA1UEBhMCVVMxETAPBgNVBAgTCFZpcmdpbmlhMRgwFgYD VQQHEw9DaGFybG90dGVzdmlsbGUxFTATBgNVBAoTDGFyZ29uLm9yZyBDQTEVMBMG A1UEAxMMYXJnb24ub3JnIENBMRswGQYJKoZIhvcNAQkBFgxjYUBhcmdvbi5vcmcw gZ8wDQYJKoZIhvcNAQEBBQADgY0AMIGJAoGBAKoFvPineq/cfSBMLXV8dSpkrH68 f8RS03eoq8MTDEQNz0pUN22GedhCiBpjSppDMgmP0+34VTfZa8vMpGnZfloSqop5 bqFFEIZ56LpZ9Yq9LGtrDB6wGz/WkHC1tFMlU8VuohJxbNXczw2VM+6QWLTgUSux fTewO7OYcCLC4iPbAgMBAAGjgeUwgeIwHQYDVR0OBBYEFHlSI640KKY736fvpzPN 3HAu0F16MIGyBgNVHSMEgaowgaeAFHlSI640KKY736fvpzPN3HAu0F16oYGLpIGI MIGFMQswCQYDVQQGEwJVUzERMA8GA1UECBMIVmlyZ2luaWExGDAWBgNVBAcTD0No YXJsb3R0ZXN2aWxsZTEVMBMGA1UEChMMYXJnb24ub3JnIENBMRUwEwYDVQQDEwxh cmdvbi5vcmcgQ0ExGzAZBgkqhkiG9w0BCQEWDGNhQGFyZ29uLm9yZ4IBADAMBgNV HRMEBTADAQH/MA0GCSqGSIb3DQEBBAUAA4GBAHgnFGcAJ6W07tZEVnZkWjdTHZyx mF76fHGBSIxdC2gSrjUaFp/hADNacoabQf2E29+cxukK41f+vCHA1RpS4tGJJiQI JGPi/WZ3+oT7XrAhqfgGNf3TUkKuiI0q76CNBa2+dduP8xxLC4Ojs36bgKjsYXz8 Ts8GogKJ+BsYuYIE -----END CERTIFICATE----- -----BEGIN X509 CRL----- MIIEmDCCBAEwDQYJKoZIhvcNAQEFBQAwgYUxCzAJBgNVBAYTAlVTMREwDwYDVQQI EwhWaXJnaW5pYTEYMBYGA1UEBxMPQ2hhcmxvdHRlc3ZpbGxlMRUwEwYDVQQKEwxh cmdvbi5vcmcgQ0ExFTATBgNVBAMTDGFyZ29uLm9yZyBDQTEbMBkGCSqGSIb3DQEJ ARYMY2FAYXJnb24ub3JnFw0wODA5MDIxMzM0MDlaFw0wOTAxMDQxMzM0MDlaMIID SDASAgECFw0wMzA4MjgxNDE5MzVaMBICAQMXDTAyMTAxMjIxMjkwOVowEgIBBBcN MDIxMDEyMjEyOTE0WjASAgEFFw0wMjEwMTIyMjIwMTNaMBICAQoXDTAzMDExNzE0 MjYyMFowEgIBDRcNMDYwMjAxMTg1MzUzWjASAgEOFw0wNTEwMTAxNTI0MTVaMBIC AQ8XDTAzMTAxNTAwNTIyN1owEgIBEBcNMDMxMDE1MDA1MjM5WjASAgERFw0wMzEw MTUwMDUyNDJaMBICARQXDTA1MTAwMjIwNTIxOVowEgIBFhcNMDQwNzA3MTU1MDIw WjASAgEXFw0wNDA3MDcxNTUwMjdaMBICARoXDTA0MDcwOTEyNTMyNVowEgIBHBcN MDQwNzIyMTczMzAzWjASAgEdFw0wNDA3MjIxNzMzMDdaMBICAR4XDTA0MDcyMjE3 MzMwOVowEgIBHxcNMDQwNzIyMTczMzA4WjASAgEgFw0wNTAyMTUxODM4NDVaMBIC AScXDTA3MDIwNTE2MDEyMFowEgIBLhcNMDUwMzIyMjAzMTMyWjASAgEwFw0wNTAz MjQxNDIxMjdaMBICATIXDTA3MDIwNTE1NTkzMVowEgIBNxcNMDcwMTI0MjIxODMz WjASAgE/Fw0wNzAyMDUxNTU5MThaMBICAUUXDTA2MDIyMjE1NTMzMVowEgIBRxcN MDgwNTIyMTUxNTAzWjASAgFIFw0wODA1MjIxNTE1MDlaMBICAUkXDTA4MDUyMjE1 MTUxMFowEgIBShcNMDgwNTIyMTUxNTExWjASAgFLFw0wNzEyMDMyMDQ2MjhaMBIC AUwXDTA4MDUyMjE1MTUxM1owEgIBTRcNMDgwNTIyMTUxNTE0WjASAgFOFw0wODA1 MjIxNTE1MThaMBICAU8XDTA4MDUyMjE1MTUxOVowEgIBUBcNMDgwNTIyMTUxNTE5 WjASAgFRFw0wODA1MjIxNTE1MjBaMBICAVIXDTA4MDUyMjE1MTUyMVowEgIBUxcN MDgwNTIyMTUxNTIyWjASAgFUFw0wODA1MjIxNTE1MjJaMBICAVoXDTA4MDUyMjE1 MzkyM1owEgIBXxcNMDgwNTIzMTcwOTU2WjANBgkqhkiG9w0BAQUFAAOBgQAYD7FI Z4nu8Fs7POvCk8ALpOUwvkOxYIy4Insyevway/EJ2SX/rnX+boKe7jMjBgy9kcSe iVTCkFQCwJYqmf+csyb4Tc6QC6eB6DU6BVZ+xAM41zbBx4aSl0BHVyqC22TeiEZ2 mndriIg39Mf4qoVxQ9hQTidWzci+Eo9vK8fnZA== -----END X509 CRL-----