Fix getOutput

paulmillr · Nov 26, 2024 · b09b292 · b09b292
1 parent 65db01f
commit b09b292
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/src/aes.ts b/src/aes.ts
@@ -607,7 +607,7 @@ export const gcm = /* @__PURE__ */ wrapCipher(
         const out = new Uint8Array(plaintext.length + tagLength);
         const toClean: (Uint8Array | Uint32Array)[] = [xk, authKey, counter, tagMask];
         if (!isAligned32(plaintext)) toClean.push((plaintext = copyBytes(plaintext)));
-        ctr32(xk, false, counter, plaintext, out);
+        ctr32(xk, false, counter, plaintext, out.subarray(0, plaintext.length));
         const tag = _computeTag(authKey, tagMask, out.subarray(0, out.length - tagLength));
         toClean.push(tag);
         out.set(tag, plaintext.length);

diff --git a/src/utils.ts b/src/utils.ts
@@ -272,7 +272,7 @@ export type XorStream = (
 
 export function getOutput(expectedLength: number, out?: Uint8Array, onlyAligned = true) {
   if (out === undefined) return new Uint8Array(expectedLength);
-  if (out.length < expectedLength)
+  if (out.length !== expectedLength)
     throw new Error(
       'invalid output length, expected at least ' + expectedLength + ', got: ' + out.length
     );