(Xojo Plugin) secp256k1 Key Generation and Keccak-256

See more ECC Examples

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

Chilkat Xojo Plugin Download Xojo Plugin for Windows, Linux, Mac OS X, and ARM, ARM64

// 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.
Dim fortuna As New Chilkat.Prng
Dim entropy As String
entropy = fortuna.GetEntropy(32,"base64")
Dim success As Boolean
success = fortuna.AddEntropy(entropy,"base64")

Dim ecc As New Chilkat.Ecc

// Generate a random ECDSA private key on the secp256k1 curve.
Dim privKey As Chilkat.PrivateKey
privKey = ecc.GenEccKey("secp256k1",fortuna)
If (ecc.LastMethodSuccess <> True) Then
    System.DebugLog(ecc.LastErrorText)
    Return
End If

System.DebugLog("Successfully generated a sec256k1 key.")

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

System.DebugLog("keccak-256: " + sb.GetHash("keccak-256","hex_lower","utf-8"))

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

// To keccak-256 hash binary data
Dim bd As New Chilkat.BinData
success = bd.AppendEncoded("00010203040506","hex")

System.DebugLog("keccak-256: " + bd.GetHash("keccak-256","hex_lower"))

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