Xojo Plugin

Create JCEKS Containing Secret Keys

See more Java KeyStore (JKS) Examples

Demonstrates how to create a JCEKS keystore file containing symmetric secret keys (for AES, Blowfish, HMAC SHA25, ChaCha20, etc.)

This example requires Chilkat v9.5.0.66 or greater.

Xojo Plugin

Dim success As Boolean
success = False

// IMPORTANT: This example requires Chilkat v9.5.0.66 or greater.

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

Dim jceks As New Chilkat.JavaKeyStore

// We'll need a pseudo-random number generator (PRNG) to generate symmetric keys.
Dim prng As New Chilkat.Prng

// Generate some keys..

// 128-bit AES key (16 bytes)
Dim aesKey As String
aesKey = prng.GenRandom(16,"base64")

// 256-bit Blowfish key (32 bytes)
Dim blowfishKey As String
blowfishKey = prng.GenRandom(32,"base64")

// HMAC SHA256 key
// (An HMAC key can be anything, and any length. We'll use the following string:
Dim hmacKey As String
hmacKey = "This is my HMAC key"

// ChaCha20 256-bit
Dim chachaKey As String
chachaKey = prng.GenRandom(32,"base64")

// Add each secret key to the JCEKS
Dim encoding As String
encoding = "base64"
Dim password As String
password = "secret"
success = jceks.AddSecretKey(aesKey,encoding,"AES","my aes key",password)
success = jceks.AddSecretKey(blowfishKey,encoding,"BLOWFISH","my blowfish key",password)
// For HMAC, we're using the us-ascii bytes for the key..
success = jceks.AddSecretKey(hmacKey,"ascii","HMAC_SHA256","my hmac key",password)
success = jceks.AddSecretKey(chachaKey,encoding,"CHACHA","my chacha20 key",password)

Dim filePassword As String
filePassword = "password"
// Write the JCEKs to a file.
success = jceks.ToFile(filePassword,"qa_output/secretKeys.jceks")
If (success <> True) Then
    System.DebugLog(jceks.LastErrorText)
    Return
End If

// We can also emit as a JWK Set..
Dim sbJson As New Chilkat.StringBuilder
success = jceks.ToJwkSet("secret",sbJson)
If (success <> True) Then
    System.DebugLog(jceks.LastErrorText)
    Return
End If

// Emit the JSON in pretty-printed (indented) form:
Dim json As New Chilkat.JsonObject
success = json.LoadSb(sbJson)
json.EmitCompact = False
System.DebugLog(json.Emit())

// Output is:

// { 
//   "keys": [
//     { 
//       "kty": "oct",
//       "alg": "AES",
//       "k": "vHekQQB0Gc1NvppapUTW2g",
//       "kid": "my aes key"
//     },
//     { 
//       "kty": "oct",
//       "alg": "BLOWFISH",
//       "k": "qHsdXaJsXicVCZbK8l8hJQpYOa0GkiO9gsRK9WLtht8",
//       "kid": "my blowfish key"
//     },
//     { 
//       "kty": "oct",
//       "alg": "HMAC_SHA256",
//       "k": "VGhpcyBpcyBteSBITUFDIGtleQ",
//       "kid": "my hmac key"
//     },
//     { 
//       "kty": "oct",
//       "alg": "CHACHA",
//       "k": "yNv832U43C9BcWvaQAH2_rG-GwfmpgT5JBRllWGQY1o",
//       "kid": "my chacha20 key"
//     }
//   ]
// }
//