(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.

Chilkat C/C++ Library Downloads
MS Visual C/C++ Linux/CentOS C/C++ Alpine Linux C/C++ MAC OS X C/C++	armhf/aarch64 C/C++ C++ Builder iOS C/C++ Android C/C++	Solaris C/C++ MinGW C/C++

#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"
    //     }
    //   ]
    // }
    // 
    }