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(Unicode C++) Twofish Encryption - 128-bit, 192-bit, 256-bitTwofish encryption. The Chilkat encryption component supports 128-bit, 192-bit, and 256-bit Twofish encryption in both ECB (Electronic Cookbook) and CBC (Cipher-Block Chaining) modes.
#include <CkCrypt2W.h> void ChilkatSample(void) { // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. CkCrypt2W crypt; // Set the encryption algorithm = "twofish" crypt.put_CryptAlgorithm(L"twofish"); // CipherMode may be "ecb" or "cbc" crypt.put_CipherMode(L"cbc"); // KeyLength may be 128, 192, 256 crypt.put_KeyLength(256); // The padding scheme determines the contents of the bytes // that are added to pad the result to a multiple of the // encryption algorithm's block size. Twofish has a block // size of 16 bytes, so encrypted output is always // a multiple of 16. crypt.put_PaddingScheme(0); // EncodingMode specifies the encoding of the output for // encryption, and the input for decryption. // It may be "hex", "url", "base64", or "quoted-printable". crypt.put_EncodingMode(L"hex"); // An initialization vector is required if using CBC mode. // ECB mode does not use an IV. // The length of the IV is equal to the algorithm's block size. // It is NOT equal to the length of the key. const wchar_t *ivHex = L"000102030405060708090A0B0C0D0E0F"; crypt.SetEncodedIV(ivHex,L"hex"); // The secret key must equal the size of the key. For // 256-bit encryption, the binary secret key is 32 bytes. // For 128-bit encryption, the binary secret key is 16 bytes. const wchar_t *keyHex = L"000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F"; crypt.SetEncodedKey(keyHex,L"hex"); // Encrypt a string... // The input string is 44 ANSI characters (i.e. 44 bytes), so // the output should be 48 bytes (a multiple of 16). // Because the output is a hex string, it should // be 96 characters long (2 chars per byte). const wchar_t *encStr = crypt.encryptStringENC(L"The quick brown fox jumps over the lazy dog."); wprintf(L"%s\n",encStr); // Now decrypt: const wchar_t *decStr = crypt.decryptStringENC(encStr); wprintf(L"%s\n",decStr); } |
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