How to use the crypt.BlockCipher function in crypt
To help you get started, we’ve selected a few crypt examples, based on popular ways it is used in public projects.
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Moddable-OpenSource / moddable / examples / crypt / cryptblockcipher / main.js View on Github 
function testBlockCipher(name, keyStr, plain, expected)
{
let key = ("string" == typeof keyStr) ? ArrayBuffer.fromString(keyStr) : keyStr;
expected = Hex.toBuffer(expected);
let result = (new BlockCipher(name, key)).encrypt(plain + "");
if (Bin.comp(result, expected) != 0)
trace(`${name} FAIL\n`);
else
trace(`${name} pass\n`);
plain = ArrayBuffer.fromString(plain);
result = (new BlockCipher(name, key)).decrypt(result)
if (Bin.comp(result, plain) != 0) {
trace(`${name} FAIL\n`);
trace("result = " + Hex.toString(result) + "\n");
trace("plain = " + Hex.toString(plain) + "\n");
}
else
trace(`${name} pass\n`);
}function setupSub(o, cipher)
{
let enc, h;
switch (cipher.cipherAlgorithm) {
case DES:
enc = new BlockCipher("DES", o.key);
break;
case TDES:
enc = new BlockCipher("TDES", o.key);
break;
case AES:
enc = new BlockCipher("AES", o.key);
break;
case RC4:
enc = new StreamCipher("RC4", o.key);
break;
default:
throw new Error("SSL: SetupCipher: unkown encryption algorithm");
}
switch (cipher.encryptionMode) {
case CBC:
case NONE:function testBlockCipher(name, keyStr, plain, expected)
{
let key = ("string" == typeof keyStr) ? ArrayBuffer.fromString(keyStr) : keyStr;
expected = Hex.toBuffer(expected);
let result = (new BlockCipher(name, key)).encrypt(plain + "");
if (Bin.comp(result, expected) != 0)
trace(`${name} FAIL\n`);
else
trace(`${name} pass\n`);
plain = ArrayBuffer.fromString(plain);
result = (new BlockCipher(name, key)).decrypt(result)
if (Bin.comp(result, plain) != 0) {
trace(`${name} FAIL\n`);
trace("result = " + Hex.toString(result) + "\n");
trace("plain = " + Hex.toString(plain) + "\n");
}
else
trace(`${name} pass\n`);function setupSub(o, cipher)
{
let enc, h;
switch (cipher.cipherAlgorithm) {
case DES:
enc = new BlockCipher("DES", o.key);
break;
case TDES:
enc = new BlockCipher("TDES", o.key);
break;
case AES:
enc = new BlockCipher("AES", o.key);
break;
case RC4:
enc = new StreamCipher("RC4", o.key);
break;
default:
throw new Error("SSL: SetupCipher: unkown encryption algorithm");
}
switch (cipher.encryptionMode) {
case CBC:
case NONE:
switch (cipher.hashAlgorithm) {
case MD5: h = "MD5"; break;
case SHA1: h = "SHA1"; break;
case SHA256: h = "SHA256"; break;
case SHA384: h = "SHA384"; break;
default:import Bin from "bin";
let Hex = {
toBuffer(s) {
return ArrayBuffer.fromBigInt(BigInt("0x" + s), s.length / 2);
},
toString(b) {
return BigInt.fromArrayBuffer(b).toString(16);
},
};
testCipherMode("ECB", "decrypt", new BlockCipher("DES", ArrayBuffer.fromString("ABCDEFGH")), undefined, undefined, Hex.toBuffer("5BD7DE165BB69D60D04399DDAD80227B"), ArrayBuffer.fromString("0123456789abcdef"));
testCipherMode("ECB", "encrypt", new BlockCipher("DES", ArrayBuffer.fromString("ABCDEFGH")), undefined, undefined, ArrayBuffer.fromString("0123456789abcdef"), Hex.toBuffer("5BD7DE165BB69D60D04399DDAD80227B"));
testCipherMode("CBC", "decrypt", new BlockCipher("DES", ArrayBuffer.fromString("ABCDEFGH")), undefined, undefined, Hex.toBuffer("77DEDD68ED79D710CA4E42C674850E61"), ArrayBuffer.fromString("this is a test!!"));
testCipherMode("CBC", "encrypt", new BlockCipher("DES", ArrayBuffer.fromString("ABCDEFGH")), undefined, undefined, ArrayBuffer.fromString("this is a test!!"), Hex.toBuffer("77DEDD68ED79D710CA4E42C674850E61"));
testCipherMode("CTR", "decrypt", new BlockCipher("AES", Hex.toBuffer("AE6852F8121067CC4BF7A5765577F39E")),
Hex.toBuffer("00000030000000000000000000000001"), undefined, Hex.toBuffer("E4095D4FB7A7B3792D6175A3261311B8"), ArrayBuffer.fromString("Single block msg"));
testCipherMode("CTR", "decrypt", new BlockCipher("AES", Hex.toBuffer("7E24067817FAE0D743D6CE1F32539163")),
Hex.toBuffer("006CB6DBC0543B59DA48D90B00000001"), undefined,
Hex.toBuffer("5104A106168A72D9790D41EE8EDAD388EB2E1EFC46DA57C8FCE630DF9141BE28"),
Hex.toBuffer("000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F"));
testCipherMode("CTR", "encrypt", new BlockCipher("AES", Hex.toBuffer("7E24067817FAE0D743D6CE1F32539163")),
Hex.toBuffer("006CB6DBC0543B59DA48D90B00000001"), undefined,
Hex.toBuffer("000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F"),
Hex.toBuffer("5104A106168A72D9790D41EE8EDAD388EB2E1EFC46DA57C8FCE630DF9141BE28"));
testBlockCipher("DES", "ABCDEFGH", "01234567", "5BD7DE165BB69D60");
