Godot 3.1 HMAC

Status

Tested in Godot 3.1beta4 on macOS 10.14. Should work on all platforms.

This module is a wrapper around the MBEDTLS library. You can validate/test your hashes using this online tool: https://www.freeformatter.com/hmac-generator.html

Install

• Clone this module and copy the hmac folder into your godot/modules folder
• Compile the engine or export template
• You now have a new object called HMAC

Usage

Instantiate new object

var hmac = HMAC.new()

Initialize your new object

The initilization takes a PoolByteArray for each value. For strings, Godot can do this for you.

var key = "secret"
var payload = "Hello World"
hmac.init(key.to_utf8(), payload.to_utf8())

The default hash type is sha256 but your other options are:

• none
• md2
• md4
• md5
• sha1
• sha224
• sha384
• sha512
• ripemd160

Pass the hash type as the last parameter in string format.

hmac.init(key.to_utf8(), payload.to_utf8(), 'md5')

Generate a token

Run the digest function. hmac.digest()

If you see no errors, you can print your HMAC with: print(hmac.get_hmac())

See Example project for more details