ed25519signature

README

ed25519signature

Sign documents with ed25519 signature algorithm

Usage

ed25519signature <command> <args>

Possible commands and respective arguments:

Command	Arg(0)	Arg(1)	Arg(2)
sign	private-key-file	file-to-sign
verify	public-key-file	file-to-check	signature
gen	private-key-filename	public-key-filename

Examples

How to generate a private/public keys pair, sign a document and finally validate it.

Generate the keys pair:

./ed25519signature gen key.pem pub.pem

Sign the main.go file:

./ed25519signature sign key.pem main.go

Output:

Signature: 68561aec4d523f98c59dea6207ccf584ee344afcafbb50311bac5195399e6647607a42fcd0b9b377b5e8e68a5e264d3aae02aff9c06d4157edd3968806e7600f

Verify the signature with public key:

./ed25519signature verify pub.pem main.go 68561aec4d523f98c59dea6207ccf584ee344afcafbb50311bac5195399e6647607a42fcd0b9b377b5e8e68a5e264d3aae02aff9c06d4157edd3968806e7600f

Output:

Valid signature

If we try to trick and pass a different signature we will get the following output and command exists with error state:

./ed25519signature verify pub.pem main.go 84cac10ed8217fac34811fac2f972b495721848842209454142e666a6acfae58c2cfc651b0d60f4f1e6e6af056760d7e83f2784b7cdd143d3534ccb1e0f9900d

Output:

Invalid signature