Node.js

AES Encrypt String (utf-8 byte representation) and return Base64

See more Encryption Examples

Demonstrates how to AES encrypt the utf-8 byte representation of a string and return in base64 format. Node.js

NODEJS_PRELUDE

function chilkatExample() {

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

    var crypt = new chilkat.Crypt2();

    crypt.CryptAlgorithm = "aes";
    crypt.CipherMode = "cbc";
    crypt.KeyLength = 256;
    crypt.Charset = "utf-8";
    crypt.EncodingMode = "base64";

    var ivHex = "000102030405060708090A0B0C0D0E0F";
    crypt.SetEncodedIV(ivHex,"hex");
    var keyHex = "000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F";
    crypt.SetEncodedKey(keyHex,"hex");

    var encryptedStr = crypt.EncryptStringENC("This is the original string");
    console.log(encryptedStr);

    // Let's say we want to URL encode the base64 string..
    crypt.CryptAlgorithm = "none";
    crypt.EncodingMode = "url";
    var urlEncoded = crypt.EncryptStringENC(encryptedStr);
    console.log(urlEncoded);

    // Sample output:

    //  q3fmgEqjqa9o//ZS6aPuh4Wtbrrxx/WOIQSKeVnesZg=
    //  q3fmgEqjqa9o%2F%2FZS6aPuh4Wtbrrxx%2FWOIQSKeVnesZg%3D

    // -------------------------------------------------------------------
    // Now let's do the reverse...
    // 

    // We start with a string that is the binary encrypted data, base64 encoded, and then URL encoded.
    var encBase64Url = "q3fmgEqjqa9o%2F%2FZS6aPuh4Wtbrrxx%2FWOIQSKeVnesZg%3D";

    // We'll use the same crypt object.  If using a new instance of the crypt object,
    // make sure *all* settings are identical:  the algorithm, cipher mode, key length, charset, encoding mode, IV, and secret key.

    // Decode from URL...
    crypt.CryptAlgorithm = "none";
    crypt.EncodingMode = "url";
    var encBase64 = crypt.DecryptStringENC(urlEncoded);
    console.log(encBase64);

    // Now decrypt...
    crypt.CryptAlgorithm = "aes";
    crypt.EncodingMode = "base64";
    var originalStr = crypt.DecryptStringENC(encBase64);
    console.log(originalStr);

}

chilkatExample();