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(Unicode C) Create JCEKS Containing Secret KeysDemonstrates 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.
#include <C_CkJavaKeyStoreW.h> #include <C_CkPrngW.h> #include <C_CkStringBuilderW.h> #include <C_CkJsonObjectW.h> void ChilkatSample(void) { HCkJavaKeyStoreW jceks; HCkPrngW prng; const wchar_t *aesKey; const wchar_t *blowfishKey; const wchar_t *hmacKey; const wchar_t *chachaKey; const wchar_t *encoding; const wchar_t *password; const wchar_t *filePassword; BOOL success; HCkStringBuilderW sbJson; HCkJsonObjectW json; // 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. jceks = CkJavaKeyStoreW_Create(); // We'll need a pseudo-random number generator (PRNG) to generate symmetric keys. prng = CkPrngW_Create(); // Generate some keys.. // 128-bit AES key (16 bytes) aesKey = CkPrngW_genRandom(prng,16,L"base64"); // 256-bit Blowfish key (32 bytes) blowfishKey = CkPrngW_genRandom(prng,32,L"base64"); // HMAC SHA256 key // (An HMAC key can be anything, and any length. We'll use the following string: hmacKey = L"This is my HMAC key"; // ChaCha20 256-bit chachaKey = CkPrngW_genRandom(prng,32,L"base64"); // Add each secret key to the JCEKS encoding = L"base64"; password = L"secret"; CkJavaKeyStoreW_AddSecretKey(jceks,aesKey,encoding,L"AES",L"my aes key",password); CkJavaKeyStoreW_AddSecretKey(jceks,blowfishKey,encoding,L"BLOWFISH",L"my blowfish key",password); // For HMAC, we're using the us-ascii bytes for the key.. CkJavaKeyStoreW_AddSecretKey(jceks,hmacKey,L"ascii",L"HMAC_SHA256",L"my hmac key",password); CkJavaKeyStoreW_AddSecretKey(jceks,chachaKey,encoding,L"CHACHA",L"my chacha20 key",password); filePassword = L"password"; // Write the JCEKs to a file. success = CkJavaKeyStoreW_ToFile(jceks,filePassword,L"qa_output/secretKeys.jceks"); if (success != TRUE) { wprintf(L"%s\n",CkJavaKeyStoreW_lastErrorText(jceks)); CkJavaKeyStoreW_Dispose(jceks); CkPrngW_Dispose(prng); return; } // We can also emit as a JWK Set.. sbJson = CkStringBuilderW_Create(); success = CkJavaKeyStoreW_ToJwkSet(jceks,L"secret",sbJson); if (success != TRUE) { wprintf(L"%s\n",CkJavaKeyStoreW_lastErrorText(jceks)); CkJavaKeyStoreW_Dispose(jceks); CkPrngW_Dispose(prng); CkStringBuilderW_Dispose(sbJson); return; } // Emit the JSON in pretty-printed (indented) form: json = CkJsonObjectW_Create(); CkJsonObjectW_LoadSb(json,sbJson); CkJsonObjectW_putEmitCompact(json,FALSE); wprintf(L"%s\n",CkJsonObjectW_emit(json)); // 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" // } // ] // } // CkJavaKeyStoreW_Dispose(jceks); CkPrngW_Dispose(prng); CkStringBuilderW_Dispose(sbJson); CkJsonObjectW_Dispose(json); } |
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