C#

Simple AES ECB Decryption

See more Encryption Examples

Decrypt 256-bit encrypted content. C#

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

Chilkat.Crypt2 crypt = new Chilkat.Crypt2();

// Encrypted content (base64-encoded)
string 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)
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.

crypt.CryptAlgorithm = "aes";
crypt.CipherMode = "ecb";
crypt.KeyLength = 256;
// use the exact ascii bytes as the key.
crypt.SetEncodedKey(key,"ascii");
crypt.EncodingMode = "base64";

string pt = crypt.DecryptStringENC(ct);

Debug.WriteLine(pt);