C#

secp256k1 Key Generation and Keccak-256

See more ECC Examples

Starting in v11.0.0, Chilkat supports both secp256k1 key generation and Keccak-256 directly. These algorithms are typically used for Bitcoin and Ethereum. C#

bool success = false;

// 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.
Chilkat.Prng fortuna = new Chilkat.Prng();
string entropy = fortuna.GetEntropy(32,"base64");
success = fortuna.AddEntropy(entropy,"base64");

Chilkat.Ecc ecc = new Chilkat.Ecc();

// Generate a random ECDSA private key on the secp256k1 curve.
Chilkat.PrivateKey privKey = new Chilkat.PrivateKey();
success = ecc.GenKey("secp256k1",fortuna,privKey);
if (success == false) {
    Debug.WriteLine(ecc.LastErrorText);
    return;
}

Debug.WriteLine("Successfully generated a sec256k1 key.");

// Show how to compute the Keccak-256 hash in a few ways.
Chilkat.StringBuilder sb = new Chilkat.StringBuilder();
sb.Append("hello");

Debug.WriteLine("keccak-256: " + sb.GetHash("keccak-256","hex_lower","utf-8"));

// Output:
// keccak-256: 1c8aff950685c2ed4bc3174f3472287b56d9517b9c948127319a09a7a36deac8

// To keccak-256 hash binary data
Chilkat.BinData bd = new Chilkat.BinData();
bd.AppendEncoded("00010203040506","hex");

Debug.WriteLine("keccak-256: " + bd.GetHash("keccak-256","hex_lower"));

// Output:
// keccak-256: 801560412425120fa609be232d6fa71c7f64f42aee7977267687dcc0a2f5aa63