rev22 / curve255js Goto Github PK

As an example, I use the private key

a0e7cb1a31ef588cf7c0a7d537a1a02d72d47667a7964f1d8e35f904e95f3d65 (hex)

With the Whisper implementation (curve25519-java at https://github.com/WhisperSystems/curve25519-java) and the Donna implementation (https://github.com/agl/curve25519-donna) of Curve 25519 I get the same result when computing the corresponding public key. The result (public key) is:

8b61c39e39eed90fc4c1cec39a4bea0db61dfbaa3753c1cd38df8a570a67a241 (hex)

However, I am unable to reproduce this result with curve255.js. I am a beginner at JavaScript. Here is the JavaScript code I thought would reproduce the results of Whisper and Donna implementations:

var privHex = "a0e7cb1a31ef588cf7c0a7d537a1a02d72d47667a7964f1d8e35f904e95f3d65";
var priv = c255lhexdecode(privHex);
var pub = curve25519(priv);
var pubHex = c255lhexencode(pub);
console.log("pubHex: " + pubHex);

The output I get is

pubHex: 04a4b47444f345546698dcfc885a3f087ac979f53a1eb7fc55e9164105f37c13

Not the expected 8b61.. How come? I am probably doing something wrong? I tried several variants of the above with no success.

Is it possible to verify with this library also?

something like verify(signature, message, publicKey);