Other implementations

[StevenACoffman]

Hey, like you I really enjoyed the article API Tokens: A Tedious Survey, and looked for protobuf token libraries, and found yours and https://github.com/ThatsMrTalbot/prototoken

However, I have also found:

• https://github.com/jdtw/token
• https://github.com/snowmerak/pwt
• https://github.com/lkyzhu/xwt (Chinese)

Additionally, I found that the author of that article implemented them in the flynn.io codebase (now archived):

• https://github.com/flynn/flynn/blob/c283e9f51589c2a7db6b3727dcceefc5a0f849cf/controller/authorizer/authorizer.go#L18

• https://github.com/flynn/flynn/blob/c283e9f51589c2a7db6b3727dcceefc5a0f849cf/controller/api/controller.proto
  You can see the protobuf:

message SignedData {
    bytes data = 1;

    bytes signature = 2;
}

message AccessToken {
    string client_id = 1;

    string user_id = 2;

    string user_email = 3;

    google.protobuf.Timestamp issue_time = 4;

    google.protobuf.Timestamp expire_time = 5;
}