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Google as Identity Provider

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Vrinda edited this page Apr 17, 2023 · 1 revision

Configurations in Keycloak and Google

Google's certificate CA in JDK Truststore

  • Download the PEM certificate from View Page Info -> Security -> View Certificate -> Global Sign from Google's website.

  • JDK 11 onwards, Google Trust Services GlobalSign is part of the default set of root Certification Authority (CA) certificates. Verify the CA is available in JDK truststore.

    keytool -list -v -keystore /usr/lib/jvm/java-13-oracle/lib/security/cacerts

    Alias name: debian:globalsign_ecc_root_ca_-_r4.pem
Creation date: May 14, 2019
Entry type: trustedCertEntry

Owner: CN=GlobalSign, O=GlobalSign, OU=GlobalSign ECC Root CA - R4
Issuer: CN=GlobalSign, O=GlobalSign, OU=GlobalSign ECC Root CA - R4
Serial number: 2a38a41c960a04de42b228a50be8349802
Valid from: Tue Nov 13 01:00:00 CET 2012 until: Tue Jan 19 04:14:07 CET 2038
Certificate fingerprints:
	 SHA1: 69:69:56:2E:40:80:F4:24:A1:E7:19:9F:14:BA:F3:EE:58:AB:6A:BB
	 SHA256: BE:C9:49:11:C2:95:56:76:DB:6C:0A:55:09:86:D7:6E:3B:A0:05:66:7C:44:2C:97:62:B4:FB:B7:73:DE:22:8C
Signature algorithm name: SHA256withECDSA
Subject Public Key Algorithm: 256-bit EC (secp256r1) key
Version: 3

Extensions: 

#1: ObjectId: 2.5.29.19 Criticality=true
BasicConstraints:[
  CA:true
  PathLen:2147483647
]

#2: ObjectId: 2.5.29.15 Criticality=true
KeyUsage [
  Key_CertSign
  Crl_Sign
]

#3: ObjectId: 2.5.29.14 Criticality=false
SubjectKeyIdentifier [
KeyIdentifier [
0000: 54 B0 7B AD 45 B8 E2 40   7F FB 0A 6E FB BE 33 C9  T...E..@...n..3.
0010: 3C A3 84 D5                                        <...
]
]

  • If this is not available or one has an older JDK version, add Google's CA in the JDK truststore

    sudo -i
cat /Downloads/www-google-com.pem >> /usr/lib/jvm/<JDKOlderThan11>/lib/security/cacerts
exit
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