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Tidied up SM4 ops and NoPadding options for AES, DES and TripleDES

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This commit is contained in:
n1474335
2022-03-29 18:01:57 +01:00
parent 31e9d27f1a
commit 8117926ca3
8 changed files with 26 additions and 15 deletions
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7
src/core/operations/DESDecrypt.mjs
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@@ -66,6 +66,7 @@ class DESDecrypt extends Operation {
const key = Utils.convertToByteString(args[0].string, args[0].option),
iv = Utils.convertToByteArray(args[1].string, args[1].option),
mode = args[2].substring(0, 3),
noPadding = args[2].endsWith("NoPadding"),
[,,, inputType, outputType] = args;
if (key.length !== 8) {
@@ -84,12 +85,14 @@ Make sure you have specified the type correctly (e.g. Hex vs UTF8).`);
input = Utils.convertToByteString(input, inputType);
const decipher = forge.cipher.createDecipher("DES-" + mode, key);
/* Allow for a "no padding" mode */
if (args[2].endsWith("NoPadding")) {
/* Allow for a "no padding" mode */
if (noPadding) {
decipher.mode.unpad = function(output, options) {
return true;
};
}
decipher.start({iv: iv});
decipher.update(forge.util.createBuffer(input));
const result = decipher.finish();