(JavaScript) 2-Key Triple DES (112 bits)

Demonstrates 2-Key Triple DES encryption (112-bit 3DES encryption).

Note

This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.

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

var crypt = new CkCrypt2();

// Specify 3DES for the encryption algorithm:
crypt.CryptAlgorithm = "3des";

crypt.CipherMode = "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).
crypt.KeyLength = 128;

// Pad with zeros
crypt.PaddingScheme = 3;

// EncodingMode specifies the encoding of the output for
// encryption, and the input for decryption.
// It may be "hex", "url", "base64", or "quoted-printable".
crypt.EncodingMode = "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)
crypt.HashAlgorithm = "md5";
var keyHex = crypt.HashStringENC("secretPassword");

// Set the encryption key:
crypt.SetEncodedKey(keyHex,"hex");

// Encrypt
var encStr = crypt.EncryptStringENC("The quick brown fox jumped over the lazy dog");
console.log(encStr);

// Now decrypt:
var decStr = crypt.DecryptStringENC(encStr);
console.log(decStr);