diff --git a/native/expo-modules/aes-crypto/android/src/main/java/app/comm/android/aescrypto/AESCryptoModule.kt b/native/expo-modules/aes-crypto/android/src/main/java/app/comm/android/aescrypto/AESCryptoModule.kt
--- a/native/expo-modules/aes-crypto/android/src/main/java/app/comm/android/aescrypto/AESCryptoModule.kt
+++ b/native/expo-modules/aes-crypto/android/src/main/java/app/comm/android/aescrypto/AESCryptoModule.kt
@@ -24,8 +24,8 @@
     Name("AESCrypto")
 
     Function("generateKey", this@AESCryptoModule::generateKey)
-    Function("encrypt", this@AESCryptoModule::encrypt)
-    Function("decrypt", this@AESCryptoModule::decrypt)
+    AsyncFunction("encrypt", this@AESCryptoModule::encrypt)
+    AsyncFunction("decrypt", this@AESCryptoModule::decrypt)
   }
 
   // region Function implementations
diff --git a/native/expo-modules/aes-crypto/ios/AESCryptoModule.swift b/native/expo-modules/aes-crypto/ios/AESCryptoModule.swift
--- a/native/expo-modules/aes-crypto/ios/AESCryptoModule.swift
+++ b/native/expo-modules/aes-crypto/ios/AESCryptoModule.swift
@@ -10,8 +10,8 @@
     Name("AESCrypto")
 
     Function("generateKey", generateKey)
-    Function("encrypt", encrypt)
-    Function("decrypt", decrypt)
+    AsyncFunction("encrypt", encrypt)
+    AsyncFunction("decrypt", decrypt)
   }
 }
 
diff --git a/native/media/encryption-utils.js b/native/media/encryption-utils.js
--- a/native/media/encryption-utils.js
+++ b/native/media/encryption-utils.js
@@ -86,7 +86,7 @@
   try {
     const plaintextData = shouldPad ? pad(data) : data;
     key = AES.generateKey();
-    encryptedData = AES.encrypt(key, plaintextData);
+    encryptedData = await AES.encrypt(key, plaintextData);
   } catch (e) {
     success = false;
     exceptionMessage = getMessageForException(e);
@@ -289,7 +289,7 @@
   let plaintextData, decryptedData, isPadded;
   try {
     const key = hexToUintArray(encryptionKey);
-    plaintextData = AES.decrypt(key, data);
+    plaintextData = await AES.decrypt(key, data);
     isPadded = plaintextData.byteLength <= PADDING_THRESHOLD;
     decryptedData = isPadded ? unpad(plaintextData) : plaintextData;
   } catch (e) {
diff --git a/native/utils/aes-crypto-module.js b/native/utils/aes-crypto-module.js
--- a/native/utils/aes-crypto-module.js
+++ b/native/utils/aes-crypto-module.js
@@ -13,12 +13,12 @@
     key: Uint8Array,
     data: Uint8Array,
     destination: Uint8Array,
-  ) => void,
+  ) => Promise<void>,
   +decrypt: (
     key: Uint8Array,
     data: Uint8Array,
     destination: Uint8Array,
-  ) => void,
+  ) => Promise<void>,
 } = requireNativeModule('AESCrypto');
 
 export function generateKey(): Uint8Array {
@@ -27,15 +27,21 @@
   return keyBuffer;
 }
 
-export function encrypt(key: Uint8Array, data: Uint8Array): Uint8Array {
+export async function encrypt(
+  key: Uint8Array,
+  data: Uint8Array,
+): Promise<Uint8Array> {
   const sealedDataBuffer = new Uint8Array(data.length + IV_LENGTH + TAG_LENGTH);
-  AESCryptoModule.encrypt(key, data, sealedDataBuffer);
+  await AESCryptoModule.encrypt(key, data, sealedDataBuffer);
   return sealedDataBuffer;
 }
 
-export function decrypt(key: Uint8Array, data: Uint8Array): Uint8Array {
+export async function decrypt(
+  key: Uint8Array,
+  data: Uint8Array,
+): Promise<Uint8Array> {
   invariant(data.length >= IV_LENGTH + TAG_LENGTH, 'Invalid data length');
   const plaintextBuffer = new Uint8Array(data.length - IV_LENGTH - TAG_LENGTH);
-  AESCryptoModule.decrypt(key, data, plaintextBuffer);
+  await AESCryptoModule.decrypt(key, data, plaintextBuffer);
   return plaintextBuffer;
 }