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(Unicode C) 2-Key Triple DES (112 bits)Demonstrates 2-Key Triple DES encryption (112-bit 3DES encryption).
#include <C_CkCrypt2W.h> void ChilkatSample(void) { HCkCrypt2W crypt; const wchar_t *keyHex; const wchar_t *encStr; const wchar_t *decStr; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. crypt = CkCrypt2W_Create(); // Specify 3DES for the encryption algorithm: CkCrypt2W_putCryptAlgorithm(crypt,L"3des"); CkCrypt2W_putCipherMode(crypt,L"ecb"); // For 2-Key Triple-DES, use a key length of 128 // (Given that each byte's msb is a parity bit, the strength is really 112 bits). CkCrypt2W_putKeyLength(crypt,128); // Pad with zeros CkCrypt2W_putPaddingScheme(crypt,3); // EncodingMode specifies the encoding of the output for // encryption, and the input for decryption. // It may be "hex", "url", "base64", or "quoted-printable". CkCrypt2W_putEncodingMode(crypt,L"hex"); // Let's create a secret key by using the MD5 hash of a password. // The Digest-MD5 algorithm produces a 16-byte hash (i.e. 128 bits) CkCrypt2W_putHashAlgorithm(crypt,L"md5"); keyHex = CkCrypt2W_hashStringENC(crypt,L"secretPassword"); // Set the encryption key: CkCrypt2W_SetEncodedKey(crypt,keyHex,L"hex"); // Encrypt encStr = CkCrypt2W_encryptStringENC(crypt,L"The quick brown fox jumped over the lazy dog"); wprintf(L"%s\n",encStr); // Now decrypt: decStr = CkCrypt2W_decryptStringENC(crypt,encStr); wprintf(L"%s\n",decStr); CkCrypt2W_Dispose(crypt); } |
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