B4X

Read JCEKS Containing Secret Keys

See more Java KeyStore (JKS) Examples

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

This example uses the jceks sample file that you may download from Sample JCEKS with Secret Keys

The file password is "filePassword". The password for each secret key contained in the JCEKS is "secret".

This example requires Chilkat v9.5.0.66 or greater.

B4X

Dim success As Boolean = 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 ChilkatJavaKeyStore
jceks.Initialize

success = jceks.LoadFile("filePassword", "qa_data/jks/secretKeys_filePassword.jceks")
If success <> True Then
    Log(jceks.LastErrorText)
    Return
End If


Dim keyPassword As String = "secret"

'  Iterate over each secret key and get the key bytes and aliases..
Dim i As Int = 0
Dim numSecretKeys As Int = jceks.NumSecretKeys
Do While i < numSecretKeys

    Log("---- Secret Key " & i)
    Log("Alias: " & jceks.GetSecretKeyAlias(i))
    '  Get the secret key bytes in a desired encoding (base64, hex, base64url, etc.)
    Log("Key Bytes (hex): " & jceks.GetSecretKey(keyPassword, i, "hex"))
    Log("Key Bytes (base64): " & jceks.GetSecretKey(keyPassword, i, "base64"))

    i = i + 1
Loop

'  The output:

'  ---- Secret Key 0
'  Alias: aes_key
'  Key Bytes (hex): CB3632FD12FF3256E0048C100DDE8DEF
'  Key Bytes (base64): yzYy/RL/MlbgBIwQDd6N7w==
'  ---- Secret Key 1
'  Alias: chacha_key
'  Key Bytes (hex): B37C73871C7B8F8D488DDE2F1A78CF51B6D74FFAF0E9B338B9609510A4688136
'  Key Bytes (base64): s3xzhxx7j41Ijd4vGnjPUbbXT/rw6bM4uWCVEKRogTY=
'  ---- Secret Key 2
'  Alias: hmac_sha256_key
'  Key Bytes (hex): 3C644B53F904A3BF161D3EAD1364E52EAE6C6EC8C61133B974A2484B894539C0
'  Key Bytes (base64): PGRLU/kEo78WHT6tE2TlLq5sbsjGETO5dKJIS4lFOcA=
'  ---- Secret Key 3
'  Alias: blowfish_key
'  Key Bytes (hex): FFE0574DE04B50F1E2FE79B4160B3B2183ACFF41721C46BFF9764CF24CA40E3C
'  Key Bytes (base64): /+BXTeBLUPHi/nm0Fgs7IYOs/0FyHEa/+XZM8kykDjw=