SetKey
MethodSet the AES key (must be 16, 24, or 32 bytes).
| Parameter | Type |
|---|---|
| key | text |
Extensions
MIT App Inventor
Kodular
Niotron
Android Builder
Thunkable
AES Encryption
Encrypt and decrypt strings with AES GCM/CBC support and automatic key utilities.
18 September 2026v2.0
Free
Tools
About
AES Encryption Extension provides production-ready encryption tools for App Inventor apps. Manage secure keys with auto-generation, configure IVs, and perform AES encryption/decryption using modern modes like GCM—all from intuitive blocks designed for secure data workflows.
Features
- AES encryption and decryption blocks
- Supports GCM and CBC modes
- Automatic key generation with selectable lengths
- Manual key input validation (16/24/32 bytes)
- IV configuration for secure sessions
- Lightweight cipher output ready for storage or transfer
- Tutorial video demonstrating setup
- Free to use with optional creator support
Documentation
AES encrypt and decrypt strings. Set a 16/24/32-byte key (and IV for CBC/GCM) before EncryptData / DecryptData, or generate a random key.
Docs5
GenerateRandomKey
Methodreturns textGenerate a random AES key of the specified length (16, 24, or 32 bytes).
| Parameter | Type |
|---|---|
| length | number |
SetIV
MethodSet the IV key (must be 16 bytes for CBC and GCM).
| Parameter | Type |
|---|---|
| iv | text |
EncryptData
Methodreturns textEncrypt the input data.
| Parameter | Type | Notes |
|---|---|---|
| plainText | text | String to encrypt. |
DecryptData
Methodreturns textDecrypt the input data.
| Parameter | Type | Notes |
|---|---|---|
| cipherText | text | Encrypted string to decrypt. |
Blocks5
Compatible platforms
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