(Perl) secp256k1 Key Generation and Keccak-256

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Note: This example requires Chilkat v11.0.0 or greater.

Chilkat Perl Downloads Perl Module for Windows, MacOS, Linux, Alpine Linux

use chilkat();

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

# Create a Fortuna PRNG and seed it with system entropy.
# This will be our source of random data for generating the ECDSA private key.
$fortuna = chilkat::CkPrng->new();
$entropy = $fortuna->getEntropy(32,"base64");
$success = $fortuna->AddEntropy($entropy,"base64");

$ecc = chilkat::CkEcc->new();

# Generate a random ECDSA private key on the secp256k1 curve.
$privKey = chilkat::CkPrivateKey->new();
$success = $ecc->GenKey("secp256k1",$fortuna,$privKey);
if ($success == 0) {
    print $ecc->lastErrorText() . "\r\n";
    exit;
}

print "Successfully generated a sec256k1 key." . "\r\n";

# Show how to compute the Keccak-256 hash in a few ways.
$sb = chilkat::CkStringBuilder->new();
$sb->Append("hello");

print "keccak-256: " . $sb->getHash("keccak-256","hex_lower","utf-8") . "\r\n";

# Output:
# keccak-256: 1c8aff950685c2ed4bc3174f3472287b56d9517b9c948127319a09a7a36deac8

# To keccak-256 hash binary data
$bd = chilkat::CkBinData->new();
$bd->AppendEncoded("00010203040506","hex");

print "keccak-256: " . $bd->getHash("keccak-256","hex_lower") . "\r\n";

# Output:
# keccak-256: 801560412425120fa609be232d6fa71c7f64f42aee7977267687dcc0a2f5aa63