fix(block-ciphers): cbc: use array offsets (#5)

aykxt · Sep 29, 2023 · 7486524 · 7486524
1 parent 31be5e2
commit 7486524
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/src/block-modes/cbc.ts b/src/block-modes/cbc.ts
@@ -45,7 +45,7 @@ export class Cbc<T extends BlockCipher> extends BlockCipherMode<T> {
   decrypt(data: Uint8Array): Uint8Array {
     this.checkBlockSize(data.length);
 
-    const view = new DataView(data.buffer);
+    const view = new DataView(data.buffer, data.byteOffset, data.byteLength);
     const decrypted = data.slice();
     const decryptedView = new DataView(decrypted.buffer);
 

diff --git a/src/block-modes/cfb.ts b/src/block-modes/cfb.ts
@@ -22,7 +22,7 @@ export class Cfb<T extends BlockCipher> extends BlockCipherMode<T> {
   encrypt(data: Uint8Array): Uint8Array {
     data = pad(data, this.padding, this.blockSize);
 
-    const view = new DataView(data.buffer);
+    const view = new DataView(data.buffer, data.byteOffset, data.byteLength);
     const encrypted = new Uint8Array(data.length);
     const encryptedView = new DataView(encrypted.buffer);