feat(ext/crypto): AES key generation (#11869)

Support AES-CTR, AES-CBC, AES-GCM, and AES-KW in
SubtleCrypto#generateKey.

1 files changed, 12 insertions, 0 deletions

diff --git a/ext/crypto/lib.rs b/ext/crypto/lib.rs
index b68bd7887..7c4010f53 100644
--- a/ext/crypto/lib.rs
+++ b/ext/crypto/lib.rs
@@ -180,6 +180,18 @@ pub async fn op_crypto_generate_key(
 
       private_key
     }
+    Algorithm::AesCtr
+    | Algorithm::AesCbc
+    | Algorithm::AesGcm
+    | Algorithm::AesKw => {
+      let length = args.length.ok_or_else(not_supported)?;
+      let mut key_data = vec![0u8; length];
+      let rng = RingRand::SystemRandom::new();
+      rng.fill(&mut key_data).map_err(|_| {
+        custom_error("DOMExceptionOperationError", "Key generation failed")
+      })?;
+      key_data
+    }
     Algorithm::Hmac => {
       let hash: HmacAlgorithm = args.hash.ok_or_else(not_supported)?.into();