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Unicode C++ Examples

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(Unicode C++) Create JCEKS Containing Secret Keys

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.

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#include <CkJavaKeyStoreW.h>
#include <CkPrngW.h>
#include <CkStringBuilderW.h>
#include <CkJsonObjectW.h>

void ChilkatSample(void)
    {
    //  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.

    CkJavaKeyStoreW jceks;

    //  We'll need a pseudo-random number generator (PRNG) to generate symmetric keys.
    CkPrngW prng;

    //  Generate some keys..

    //  128-bit AES key (16 bytes)
    const wchar_t *aesKey = prng.genRandom(16,L"base64");

    //  256-bit Blowfish key (32 bytes)
    const wchar_t *blowfishKey = prng.genRandom(32,L"base64");

    //  HMAC SHA256 key
    //  (An HMAC key can be anything, and any length. We'll use the following string:
    const wchar_t *hmacKey = L"This is my HMAC key";

    //  ChaCha20 256-bit
    const wchar_t *chachaKey = prng.genRandom(32,L"base64");

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

    const wchar_t *filePassword = L"password";
    //  Write the JCEKs to a file.
    bool success = jceks.ToFile(filePassword,L"qa_output/secretKeys.jceks");
    if (success != true) {
        wprintf(L"%s\n",jceks.lastErrorText());
        return;
    }

    //  We can also emit as a JWK Set..
    CkStringBuilderW sbJson;
    success = jceks.ToJwkSet(L"secret",sbJson);
    if (success != true) {
        wprintf(L"%s\n",jceks.lastErrorText());
        return;
    }

    //  Emit the JSON in pretty-printed (indented) form:
    CkJsonObjectW json;
    json.LoadSb(sbJson);
    json.put_EmitCompact(false);
    wprintf(L"%s\n",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"
    //      }
    //    ]
    //  }
    // 
    }

 

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