Perl Requires Chilkat v11.0.0+

Download Google OAuth2 Certs (JWK) and Load into Chilkat PublicKey Objects

See more OAuth2 Examples

Demonstrates how to download the JWK from https://www.googleapis.com/oauth2/v3/certs and load the public keys into Chilkat public key objects. Perl

use chilkat();

$success = 0;

#  This example requires the Chilkat API to have been previously unlocked.
#  See Global Unlock Sample for sample code.

$http = chilkat::CkHttp->new();

$jwkStr = $http->quickGetStr("https://www.googleapis.com/oauth2/v3/certs");
if ($http->get_LastMethodSuccess() == 0) {
    print $http->lastErrorText() . "\r\n";
    exit;
}

#  We have the following:

#      {
#        "keys": [
#  	{
#  	  "kid": "e8732db06287515556213b80acbcfd08cfb302a9",
#  	  "n": "4RIrO30287Wsq3gqXCMkUYMVAeI3H8...w2mbMNEBQ",
#  	  "kty": "RSA",
#  	  "e": "AQAB",
#  	  "alg": "RS256",
#  	  "use": "sig"
#  	},
#  	{
#  	  "kid": "8462a71da4f6d611fc0fecf0fc4ba9c37d65e6cd",
#  	  "e": "AQAB",
#  	  "n": "xT_ngLZNmT5GBtJZeTB...Ft4gK0eoFi0d3l8bcw",
#  	  "alg": "RS256",
#  	  "use": "sig",
#  	  "kty": "RSA"
#  	}
#        ]
#      }

$json = chilkat::CkJsonObject->new();
$success = $json->Load($jwkStr);

$jsonKey = chilkat::CkJsonObject->new();
$pubKey = chilkat::CkPublicKey->new();
$numKeys = $json->SizeOfArray("keys");
$i = 0;
while ($i < $numKeys) {
    $json->put_I($i);

    $json->ObjectOf2("keys[i]",$jsonKey);

    $success = $pubKey->LoadFromString($jsonKey->emit());
    if ($success == 0) {
        print $pubKey->lastErrorText() . "\r\n";
        exit;
    }

    print $i . "\r\n";
    print $pubKey->getPem(1) . "\r\n";
    $i = $i + 1;
}

print "Success." . "\r\n";

#  Sample output:

#  0
#  -----BEGIN RSA PUBLIC KEY-----
#  MIIBCgKCAQEA4RIrO30287Wsq3gqXCMkUYMVAeI3H8LVE6IXR1krdFeGnZLiGUPw
#  cbkeVpXf3lmJdsStOg+jijces2DZCfPyIBiQuLYfxxmAZE6ErJ0QJFg1stwli2Pz
#  9ncYhFoqi8pXr7kEzEJBTzX4thuw56ydbGsshSEznPXoerCJOc7UI2+n0wFCWQ4Y
#  LHbh/PrWt4vdadyUUUW/QpQHXQLdD8q/Qwqdj0O9zlJE7R6Elw2E9EqnHyIGu1hm
#  LxhqrTru1M18SUhONYbVskV/BCEdVKs//X96849HorWQDCAgVMWfGsdMVq55FAdJ
#  680N5UmQDRynIZ4+PeNGN4S9iw2mbMNEBQIDAQAB
#  -----END RSA PUBLIC KEY-----
#  
#  1
#  -----BEGIN RSA PUBLIC KEY-----
#  MIIBCgKCAQEAxT/ngLZNmT5GBdkLtJZjNeTB+8B5yWgrq/e5eMZ1hrZhcmLK+dSn
#  IkpOPV8/OekV67EnQ7I4II2rcNJnHGrGKZziXO3XN2gtUHE+mBJC99oULSbX/QwB
#  Kz7gC/IBPq9EuxTt6Oq6fPkVQ9DbRIgWJSEGBF/KRaNl3kyAlIZfpY7XgHyJTTv8
#  E7yAcYKPR+36gzdl+ps0sDLKzUuAtZNq8llK0u80z6AtAUIYwWdkEhM9upy6keKI
#  TasIxcsO7M6kZPINUSbh6t5VAm8FuqRmxpgg+9c9/GQSGd89InVypoVzWLQ+wOGg
#  5G4H6JqIgtj0TRFt4gK0eoFi2U0d3l8bcwIDAQAB
#  -----END RSA PUBLIC KEY-----
#  
#  Success.