C

Simple AES ECB Decryption

See more Encryption Examples

Decrypt 256-bit encrypted content. C

#include <C_CkCrypt2.h>

void ChilkatSample(void)
    {
    HCkCrypt2 crypt;
    const char *ct;
    const char *key;
    const char *pt;

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    crypt = CkCrypt2_Create();

    // Encrypted content (base64-encoded)
    ct = "d/95VziAnUNKkpXr3dJBFcQqAEDWlDkc7EU2jLkYPxmr6PpLRJlgHos+/Uy28CvJsmztQ3JkJAMukVoj46QJ/7RMuqLb31cSKd1ZvMzx9J9b6q0EkmPJcSfBhf2x7v5Qvq3lz1EIH7RM61cDGf+g9p4lt6FtU2MzCqtYD+Vr29voCn5WU1CnXmks64RrbyDA1DDHOx2deJ4Kn68+KoPM9tAw9kbf4HApL1nJYU3Mfzl+MnuHuB2kJpL5GqbuNvS+4QjxuwtNGuZEEY0gOS4RIvWl/XfkxtWHMkzsKy08AO792xDGer4rL4Q1NcfI/H2V";

    // 256-bit AES key (literally the 32 us-ascii bytes of this string)
    key = "sQsPQYesBM5qEM5OSxicFatIiLM459Bu";

    // Note: If your AES key is a string, and it's not clearly hex or base64, AND if the length of the string is the exact size of the AES key,
    // then *literally* use the ascii chars as the AES key.

    CkCrypt2_putCryptAlgorithm(crypt,"aes");
    CkCrypt2_putCipherMode(crypt,"ecb");
    CkCrypt2_putKeyLength(crypt,256);
    // use the exact ascii bytes as the key.
    CkCrypt2_SetEncodedKey(crypt,key,"ascii");
    CkCrypt2_putEncodingMode(crypt,"base64");

    pt = CkCrypt2_decryptStringENC(crypt,ct);

    printf("%s\n",pt);


    CkCrypt2_Dispose(crypt);

    }