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Add optional parameter includeLength to encrypt/decrypt functions, to add possibility encrypt/decrypt values without length #5

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Add optional parameter includeLength to encrypt/decrypt functions, to add possibility encrypt/decrypt values without length #5

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Add optional parameter includeLength to decrypt function, to add poss…
EgzoT Jan 23, 2022
74b3512
Add optional parameter includeLength to encrypt function, to add poss…
EgzoT Jan 24, 2022
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8 changes: 4 additions & 4 deletions lib/xxtea.js
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Original file line number Diff line number Diff line change
Expand Up @@ -288,26 +288,26 @@ function toString(bytes) {
toLongString(bytes, n));
}

function encrypt(data, key) {
function encrypt(data, key, includeLength = true) {
if (typeof data === 'string') data = toBytes(data);
if (typeof key === 'string') key = toBytes(key);
if (data === undefined || data === null || data.length === 0) {
return data;
}
return toUint8Array(encryptUint32Array(toUint32Array(data, true), toUint32Array(fixk(key), false)), false);
return toUint8Array(encryptUint32Array(toUint32Array(data, includeLength), toUint32Array(fixk(key), false)), false);
}

function encryptToString(data, key) {
return new Buffer(encrypt(data, key)).toString('base64');
}

function decrypt(data, key) {
function decrypt(data, key, includeLength = true) {
if (typeof data === 'string') data = new Buffer(data, 'base64');
if (typeof key === 'string') key = toBytes(key);
if (data === undefined || data === null || data.length === 0) {
return data;
}
return toUint8Array(decryptUint32Array(toUint32Array(data, false), toUint32Array(fixk(key), false)), true);
return toUint8Array(decryptUint32Array(toUint32Array(data, false), toUint32Array(fixk(key), false)), includeLength);
}

function decryptToString(data, key) {
Expand Down