我试图通过 JWT 通过 OAuth 连接到 Google API,但我不断收到此错误:
{ "error": "invalid_grant", "error_description": "无效的 JWT:令牌必须是短期令牌且处于合理的时间范围内" }
在我的 JWT calim 中,我将 iat 设置为当前时间减去 1970-01-01(以秒为单位),并将 exp 设置为 iat + 3600,所以我不知道为什么我仍然收到此错误。如果有人知道答案请告诉meeeeeee!
不确定你是否让它工作,但以下简单的步骤对我使用 PHP 函数有用openssl_sign():
//helper function
function base64url_encode($data) {
return rtrim(strtr(base64_encode($data), '+/', '-_'), '=');
}
//Google's Documentation of Creating a JWT: https://developers.google.com/identity/protocols/OAuth2ServiceAccount#authorizingrequests
//{Base64url encoded JSON header}
$jwtHeader = base64url_encode(json_encode(array(
"alg" => "RS256",
"typ" => "JWT"
)));
//{Base64url encoded JSON claim set}
$now = time();
$jwtClaim = base64url_encode(json_encode(array(
"iss" => "761326798069-r5mljlln1rd4lrbhg75efgigp36m78j5@developer.gserviceaccount.com",
"scope" => "https://www.googleapis.com/auth/prediction",
"aud" => "https://www.googleapis.com/oauth2/v4/token",
"exp" => $now + 3600,
"iat" => $now
)));
//The base string for the signature: {Base64url encoded JSON header}.{Base64url encoded JSON claim set}
openssl_sign(
$jwtHeader.".".$jwtClaim,
$jwtSig,
$your_private_key_from_google_api_console,
"sha256WithRSAEncryption"
);
$jwtSign = base64url_encode($jwtSig);
//{Base64url encoded JSON header}.{Base64url encoded JSON claim set}.{Base64url encoded signature}
$jwtAssertion = $jwtHeader.".".$jwtClaim.".".$jwtSig;
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