(Classic ASP) 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.

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

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

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<%
' 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.
' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.Prng")
set fortuna = Server.CreateObject("Chilkat.Prng")
entropy = fortuna.GetEntropy(32,"base64")
success = fortuna.AddEntropy(entropy,"base64")

' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.Ecc")
set ecc = Server.CreateObject("Chilkat.Ecc")

' Generate a random ECDSA private key on the secp256k1 curve.
' privKey is a Chilkat.PrivateKey
Set privKey = ecc.GenEccKey("secp256k1",fortuna)
If (ecc.LastMethodSuccess <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( ecc.LastErrorText) & "</pre>"
    Response.End
End If

Response.Write "<pre>" & Server.HTMLEncode( "Successfully generated a sec256k1 key.") & "</pre>"

' Show how to compute the Keccak-256 hash in a few ways.
' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.StringBuilder")
set sb = Server.CreateObject("Chilkat.StringBuilder")
success = sb.Append("hello")

Response.Write "<pre>" & Server.HTMLEncode( "keccak-256: " & sb.GetHash("keccak-256","hex_lower","utf-8")) & "</pre>"

' Output:
' keccak-256: 1c8aff950685c2ed4bc3174f3472287b56d9517b9c948127319a09a7a36deac8

' To keccak-256 hash binary data
' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.BinData")
set bd = Server.CreateObject("Chilkat.BinData")
success = bd.AppendEncoded("00010203040506","hex")

Response.Write "<pre>" & Server.HTMLEncode( "keccak-256: " & bd.GetHash("keccak-256","hex_lower")) & "</pre>"

' Output:
' keccak-256: 801560412425120fa609be232d6fa71c7f64f42aee7977267687dcc0a2f5aa63

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