Node.js

Blowfish Encryption, ECB, CBC, CFB modes

See more Encryption Examples

Blowfish encryption. The Chilkat encryption component supports Blowfish key sizes ranging from 32-bits to 448-bits. Chilkat's blowfish implementation supports ECB (Electronic Cookbook) , CBC (Cipher-Block Chaining), and CFB (Cipher Feedback) modes. Node.js

NODEJS_PRELUDE

function chilkatExample() {

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

    var crypt = new chilkat.Crypt2();

    //  Attention: use "blowfish2" for the algorithm name:
    crypt.CryptAlgorithm = "blowfish2";

    //  CipherMode may be "ecb", "cbc", or "cfb"
    crypt.CipherMode = "cbc";

    //  KeyLength (in bits) may be a number between 32 and 448.
    //  128-bits is usually sufficient.  The KeyLength must be a 
    //  multiple of 8.
    crypt.KeyLength = 128;

    //  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.  Blowfish has a block
    //  size of 8 bytes, so encrypted output is always
    //  a multiple of 8.
    crypt.PaddingScheme = 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.EncodingMode = "hex";

    //  An initialization vector is required if using CBC or CFB modes.
    //  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.
    var ivHex = "0001020304050607";
    crypt.SetEncodedIV(ivHex,"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.
    var keyHex = "000102030405060708090A0B0C0D0E0F";
    crypt.SetEncodedKey(keyHex,"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 8).
    //  Because the output is a hex string, it should
    //  be 96 characters long (2 chars per byte).
    var encStr = crypt.EncryptStringENC("The quick brown fox jumps over the lazy dog.");
    console.log(encStr);

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

}

chilkatExample();