(C++) Simple AES ECB Decryption

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Decrypt 256-bit encrypted content.

Chilkat C/C++ Library Downloads
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#include <CkCrypt2.h>

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

    CkCrypt2 crypt;

    // Encrypted content (base64-encoded)
    const char *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)
    const char *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.

    crypt.put_CryptAlgorithm("aes");
    crypt.put_CipherMode("ecb");
    crypt.put_KeyLength(256);
    // use the exact ascii bytes as the key.
    crypt.SetEncodedKey(key,"ascii");
    crypt.put_EncodingMode("base64");

    const char *pt = crypt.decryptStringENC(ct);

    std::cout << pt << "\r\n";
    }