Perl Requires Chilkat v9.5.0.83+

Ed25519 Sign and Verify

See more Ed25519 Examples

Demonstrates how to create an Ed25519 signature, and then to verify it. Chilkat2 Perl

use strict;
use warnings;
use Chilkat2;

# This example assumes the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

my $privKeyHex = '1498b5467a63dffa2dc9d9e069caf075d16fc33fdd4c3b01bfadae6433767d93';
my $pubKeyHex = 'b7a3c12dc0c8c748ab07525b701122b88bd78f600c76342d27f25e5f92444cde';

my $privKey = Chilkat2::PrivateKey->new;
# This example shows only one way of loading an Ed25519 private key.
# Chilkat can load other formats (JWK, PEM, ASN.1 DER, etc.)
# You may do so by calling LoadAnyFormat or LoadAnyFormatFile.
my $success = $privKey->LoadEd25519($privKeyHex, $pubKeyHex);
if (!$success) {
    print $privKey->LastErrorText, "\n";
    exit;
}

# The data to be signed...
my $bd = Chilkat2::BinData->new;
$bd->AppendString('Message for Ed25519 signing', 'utf-8');

my $eddsa = Chilkat2::EdDSA->new;
my $hexSig = $eddsa->SignBdENC($bd, 'hexlower', $privKey);

print 'signature = ', $hexSig, "\n";

# The expected output is: 6dd355667fae4eb43c6e0ab92e870edb2de0a88cae12dbd8591507f584fe4912babff497f1b8edf9567d2483d54ddc6459bea7855281b7a246a609e3001a4e08

# Verify the signature..
my $pubKey = Chilkat2::PublicKey->new;
$success = $pubKey->LoadEd25519($pubKeyHex);
if (!$success) {
    print $pubKey->LastErrorText, "\n";
    exit;
}

my $bVerified = $eddsa->VerifyBdENC($bd, $hexSig, 'hexlower', $pubKey);
if (!$bVerified) {
    print $eddsa->LastErrorText, "\n";
    print "Failed to verify the signature.\n";
    exit;
}

print "The Ed25519 signature is verified!\n";