All SAML Metadata documents published by ACOnet for the eduID.at service are signed with a 2048-bit sized private key that corresponds to the public key contained in the self-issued X.509 certificate reproduced below in Base64-encoded DER format:
-----BEGIN CERTIFICATE----- MIIFGDCCBACgAwIBAgIJAJS+3dUtfj7NMA0GCSqGSIb3DQEBBQUAMIG4MQswCQYD VQQGEwJBVDEjMCEGA1UEChMaQUNPbmV0IC8gVW5pdmVyc2l0YWV0IFdpZW4xOTA3 BgNVBAsTMFplbnRyYWxlciBJbmZvcm1hdGlrZGllbnN0IGRlciBVbml2ZXJzaXRh ZXQgV2llbjEkMCIGA1UEAxMbQUNPbmV0IE1ldGFkYXRhIFNpZ25pbmcgS2V5MSMw IQYJKoZIhvcNAQkBFhRhYWkuemlkQHVuaXZpZS5hYy5hdDAeFw0wODA1MjkxMjI3 MjBaFw0xODA1MjcxMjI3MjBaMIG4MQswCQYDVQQGEwJBVDEjMCEGA1UEChMaQUNP bmV0IC8gVW5pdmVyc2l0YWV0IFdpZW4xOTA3BgNVBAsTMFplbnRyYWxlciBJbmZv cm1hdGlrZGllbnN0IGRlciBVbml2ZXJzaXRhZXQgV2llbjEkMCIGA1UEAxMbQUNP bmV0IE1ldGFkYXRhIFNpZ25pbmcgS2V5MSMwIQYJKoZIhvcNAQkBFhRhYWkuemlk QHVuaXZpZS5hYy5hdDCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAMEg y0tuWObKZqwfH8pEqs1202hLLEf3A9dn6BSA6C8DeT1BMF1lj7JfM18qBcNp1paz kSuO2fMI1NUJTuAXGUbfIsedhiV7PUOcYAbOMxP16eoYFAWtIn9j8TlqANlE6lIA Y/C+o6FZM+awXomOydgpH70cPkEs5DJvmBLJgHMKcoIWrynw72Ejsbm7mAWnKpMB mtCfAJA7oht5H6cnawhOUfCk7fD+uV4nufoPGAlNJqpdbwsw9DuPMuXSuUhw+D4Z KRtgQGshojVEe2w0pFRJW97sm8I29AUCPqtIbuDaqXmY02NKU57uaGYUFuPXuDPo CiRKElHHiNwkmep0nx8CAwEAAaOCASEwggEdMB0GA1UdDgQWBBRMDvgWXOITq/Y4 pQcczif+Ly7y4zCB7QYDVR0jBIHlMIHigBRMDvgWXOITq/Y4pQcczif+Ly7y46GB vqSBuzCBuDELMAkGA1UEBhMCQVQxIzAhBgNVBAoTGkFDT25ldCAvIFVuaXZlcnNp dGFldCBXaWVuMTkwNwYDVQQLEzBaZW50cmFsZXIgSW5mb3JtYXRpa2RpZW5zdCBk ZXIgVW5pdmVyc2l0YWV0IFdpZW4xJDAiBgNVBAMTG0FDT25ldCBNZXRhZGF0YSBT aWduaW5nIEtleTEjMCEGCSqGSIb3DQEJARYUYWFpLnppZEB1bml2aWUuYWMuYXSC CQCUvt3VLX4+zTAMBgNVHRMEBTADAQH/MA0GCSqGSIb3DQEBBQUAA4IBAQASWCbG /jR4a8lxYvRoh+B7KDQa95R4UPnN1A+pIsGcEkYPa8thqpnHH6vCm6VioIc34wfw KtruBYVfxrT8Bh7A2kuRCpnXzZtMnFsxRJP5GB28VJc7m7Ev4OjOOVglahPM7xFu gVFxsxYimah1JQIMAJPHFYgwhEEPMmuwpCd0S9Lj6yVc0VVW0NBeaqTTBRRAQdKX ekwKYe5tVVuZV/zyXDaXJbCVwEz620VQjJ7o0aU06eJ8Sr3Q4DpXz74b/baWOhA9 3tuzubdIm+mTaEDggMgAV3cZJg+djx2eSmyDQVwxaOZ3ESiR1Gcoz0vCsg8smrZJ wM0aEN5quFWfiFFE -----END CERTIFICATE-----
This certificate can also be securely downloaded via HTTPS from this location, e.g. via curl:
The fingerprints of that certificate are:
SHA-1 EE:37:0A:C2:77:56:F8:8B:45:3A:9B:7D:F2:F0:CA:24:C2:14:33:72 SHA-256 35:56:3A:36:DA:77:A7:76:77:12:E9:E6:BC:CA:F7:02:D8:40:26:A8:AE:A7:DA:BC:5D:B9:72:EB:BE:FA:CB:4B
You can always contact ACOnet to verify the fingerprint, e.g. via telephone. To calculate the fingerprint of the downloaded certificate use the following openssl
command (on MS-Windows you could use these binaries):
openssl x509 -noout -fingerprint -sha256 -in aconet-metadata-signing.crt
Optional: Web of Trust check
For added assurance about the authenticity of the key reproduced and referenced above you may also download an OpenPGP-signed copy of that certificate, signed with the OpenPGP key of one of the Federation Operators. The commands below will first download the signed copy of the Metadata Signing Key (aconet-metadata-signing.crt.asc
), verify the signature and then extract a (unsigned) copy into its original file name (aconet-metadata-signing.crt
) for forther use.
$ curl -O https://eduid.at/keys/aconet-metadata-signing.crt.asc $ gpg aconet-metadata-signing.crt.asc gpg: Signature made Mon 23 Jun 2014 14:58:18 CEST using RSA key ID F868B59A gpg: Good signature from "Peter Schober <peter@metameta.org>" gpg: aka "Peter Schober <peter.schober@univie.ac.at>" gpg: aka "Peter Schober <peter@aco.net>"
You may decide to put additional trust in the certificate based on your trust in the Web of trust signatures on the OpenPGP key used to sign that file.