(PowerShell) secp256k1 Key Generation and Keccak-256

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

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Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"

# 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 = New-Object Chilkat.Prng
$entropy = $fortuna.GetEntropy(32,"base64")
$success = $fortuna.AddEntropy($entropy,"base64")

$ecc = New-Object Chilkat.Ecc

# Generate a random ECDSA private key on the secp256k1 curve.
$privKey = $ecc.GenEccKey("secp256k1",$fortuna)
if ($ecc.LastMethodSuccess -ne $true) {
    $($ecc.LastErrorText)
    exit
}

$("Successfully generated a sec256k1 key.")

# Show how to compute the Keccak-256 hash in a few ways.
$sb = New-Object Chilkat.StringBuilder
$sb.Append("hello")

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

# Output:
# keccak-256: 1c8aff950685c2ed4bc3174f3472287b56d9517b9c948127319a09a7a36deac8

# To keccak-256 hash binary data
$bd = New-Object Chilkat.BinData
$bd.AppendEncoded("00010203040506","hex")

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

# Output:
# keccak-256: 801560412425120fa609be232d6fa71c7f64f42aee7977267687dcc0a2f5aa63