Rust

AES Encryption

See more Encryption Examples

AES encryption. The Chilkat encryption component supports 128-bit, 192-bit, and 256-bit AES encryption in ECB (Electronic Cookbook), CBC (Cipher-Block Chaining), and other modes. Rust

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

let crypt = chilkat::Crypt2::new();

// AES is also known as Rijndael.		
crypt.set_crypt_algorithm("aes");

// CipherMode may be "ecb", "cbc", "ofb", "cfb", "gcm", etc.
// Note: Check the online reference documentation to see the Chilkat versions
// when certain cipher modes were introduced.
crypt.set_cipher_mode("cbc");

// KeyLength may be 128, 192, 256
crypt.set_key_length(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.  AES has a block
// size of 16 bytes, so encrypted output is always
// a multiple of 16.
crypt.set_padding_scheme(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.set_encoding_mode("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.
let iv_hex = "000102030405060708090A0B0C0D0E0F".to_string();
crypt.set_encoded_iv(&iv_hex, "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.
let key_hex = "000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F".to_string();
crypt.set_encoded_key(&key_hex, "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).
let enc_str = crypt.encrypt_string_enc("The quick brown fox jumps over the lazy dog.").unwrap_or_default();
println!("{}", enc_str);

// This is the encrypted output in hex format:
// 4846F83AA211E239AA62A21F527F089EE9DDBEAD30EE15D4E79B607A621B97BEDB9B6F00A9B21F1B43A50B4C1BE0EDF2

// Now decrypt:
let dec_str = crypt.decrypt_string_enc(&enc_str).unwrap_or_default();
println!("{}", dec_str);

// This is the decrypted string:
// The quick brown fox jumps over the lazy dog.