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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:
No Format |
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-----BEGIN CERTIFICATE----- MIIFGDCCBACgAwIBAgIJAJS+3dUtfj7NMA0GCSqGSIb3DQEBBQUAMIG4MQswCQYDMIID6jCCAtKgAwIBAgIJANITq5P0ezzOMA0GCSqGSIb3DQEBCwUAMIGJMQswCQYD VQQGEwJBVDEjMCEGA1UEChMaQUNPbmV0IC8gVW5pdmVyc2l0YWV0IFdpZW4xOTA3VQQGEwJBVDEPMA0GA1UECgwGQUNPbmV0MSMwIQYDVQQLDBpBQ09uZXQgSWRlbnRp BgNVBAsTMFplbnRyYWxlciBJbmZvcm1hdGlrZGllbnN0IGRlciBVbml2ZXJzaXRhdHkgRmVkZXJhdGlvbjEmMCQGA1UEAwwdZWR1SUQuYXQgTWV0YWRhdGEgU2lnbmlu ZXQgV2llbjEkMCIGA1UEAxMbQUNPbmV0IE1ldGFkYXRhIFNpZ25pbmcgS2V5MSMwZyBLZXkxHDAaBgkqhkiG9w0BCQEWDWVkdWlkQGFjby5uZXQwHhcNMTgwNDExMTIw IQYJKoZIhvcNAQkBFhRhYWkuemlkQHVuaXZpZS5hYy5hdDAeFw0wODA1MjkxMjI3MDA2WhcNMzcxMjMxMTIwMDA2WjCBiTELMAkGA1UEBhMCQVQxDzANBgNVBAoMBkFD MjBaFw0xODA1MjcxMjI3MjBaMIG4MQswCQYDVQQGEwJBVDEjMCEGA1UEChMaQUNPT25ldDEjMCEGA1UECwwaQUNPbmV0IElkZW50aXR5IEZlZGVyYXRpb24xJjAkBgNV bmV0IC8gVW5pdmVyc2l0YWV0IFdpZW4xOTA3BgNVBAsTMFplbnRyYWxlciBJbmZvBAMMHWVkdUlELmF0IE1ldGFkYXRhIFNpZ25pbmcgS2V5MRwwGgYJKoZIhvcNAQkB cm1hdGlrZGllbnN0IGRlciBVbml2ZXJzaXRhZXQgV2llbjEkMCIGA1UEAxMbQUNPFg1lZHVpZEBhY28ubmV0MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA 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 wSDLS25Y5spmrB8fykSqzXbTaEssR/cD12foFIDoLwN5PUEwXWWPsl8zXyoFw2nW lrORK47Z8wjU1QlO4BcZRt8ix52GJXs9Q5xgBs4zE/Xp6hgUBa0if2PxOWoA2UTq UgBj8L6joVkz5rBeiY7J2CkfvRw+QSzkMm+YEsmAcwpyghavKfDvYSOxubuYBacq kwGa0J8AkDuiG3kfpydrCE5R8KTt8P65Xie5+g8YCU0mql1vCzD0O48y5dK5SHD4 PhkpG2BAayGiNUR7bDSkVElb3uybwjb0BQI+q0hu4NqpeZjTY0pTnu5oZhQW49e4 M+gKJEoSUceI3CSZ6nSfHwIDAQABo1MwUTAdBgNVHQ4EFgQUTA74FlziE6v2OKUH HM4n/i8u8uMwHwYDVR0jBBgwFoAUTA74FlziE6v2OKUHHM4n/i8u8uMwDwYDVR0T AQH/BAUwAwEB/zANBgkqhkiG9w0BAQsFAAOCAQEAGaJ65BAAKb8B4gxSWF2tkkFZ 7ThEftd8pdp7wTdGOb6uR1fh5wnyHs/TZeM7vJHAmqaobekFpFX0LOnDXAQ9k4kI O+qYYNJas0YcC9n1R/ZZWkPkJpOnbzArBZq5w6gafLLEiK+nc0GX0swyPbsCL+jh kYMi38ea4xFpzlIvvharYhr+K9X2P2um6Js/YYuB9i4lzRss5JinVIQyc3OY7u62 zqkUDQ/3Ggu2j+GPF/Ij7+jwIuxXuOB3XpvC8zxSQ/unozRTNY3TR7kvcIxyMA9I Mo0l1Bhktwu7txYDxCUWXmhqakzLIu9OAL+vpdek1QPp4rKST0NMwMK+kETNJQ== -----END CERTIFICATE----- |
This certificate can also be securely downloaded via HTTPS from this location, e.g. via curl:
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The public key from that certificate is this (openssl x509 -pubkey -noout -in aconet-metadata-signing.crt
):
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-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwSDLS25Y5spmrB8fykSq zXbTaEssR/cD12foFIDoLwN5PUEwXWWPsl8zXyoFw2nWlrORK47Z8wjU1QlO4BcZ Rt8ix52GJXs9Q5xgBs4zE/Xp6hgUBa0if2PxOWoA2UTqUgBj8L6joVkz5rBeiY7J 2CkfvRw+QSzkMm+YEsmAcwpyghavKfDvYSOxubuYBacqkwGa0J8AkDuiG3kfpydr CE5R8KTt8P65Xie5+g8YCU0mql1vCzD0O48y5dK5SHD4PhkpG2BAayGiNUR7bDSk VElb3uybwjb0BQI+q0hu4NqpeZjTY0pTnu5oZhQW49e4M+gKJEoSUceI3CSZ6nSf HwIDAQAB -----END PUBLIC KEY----- |
The fingerprints of that certificate are:
No Format |
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SHA-1 EE6B:3711:0A58:C268:77AC:566D:F845:8BBC:457E:3A51:9B:7D5D:F245:F022:CA2A:248D:C285:14C1:3302:722F SHA-256 350A:568B:3A47:36D5:DAB9:77F3:A78C:7661:779A:127A:E999:E6A6:BC62:CAED:F7A5:02A0:D843:4071:26B6:A845:AE17:A72E:DA62:BC2D:5DDB:B9BF:720A:EBE5:BE49:FA17:CB8C:4B2D |
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):
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openssl x509 -noout -fingerprint -sha256 -in aconet-metadata-signing.crt |
...
For added assurance about the authenticity of the key reproduced and referenced above you may download an OpenPGP signature signature from one of the eduID.at operators.
The commands below will download the Metadata Signing Key (aconet-metadata-signing.crt
), a file containing an OpenPGP-signature of it (aconet-metadata-signing.crt.asc
) and then verify that the Metadata Signing Key has in fact been signed by that OpenPGP-key:
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$ curl -O "https://eduid.at/keysmd/aconet-metadata-signing.crt{,.asc}" $ curlgpg -O https://eduid.at/keys/-verify aconet-metadata-signing.crt.asc $ gpg --verify aconet-metadata-signing.crt.asc gpg: Signature made MonWed 2311 JunApr 20142018 1503:2335:3510 PM CEST using RSA key ID F868B59A gpg: Good signature from "Peter Schober <peter@metameta.org>" gpg: using RSA key 336A59F993C634AD50D6DBE2AFF60721F868B59A gpg: Good signature from aka "Peter Schober <peter.schober@univie.ac.at>" [full] gpg: aka "Peter Schober <peter@aco.net>" [full] |
How much additional trust you derive from that procedure depends solely on the trust you put into the Web of trust signatures on the OpenPGP key used to sign that file, i.e. whether you believe the people who have signed the eduID.at operator's key to be legit thereby testifying to the authenticity of the identity represented in that OpenPGP key.