FluxyAPIFluxyAPI
BlocksTokens & Crypto

Encrypt String

Securely lock sensitive data so it can only be read with a secret key.

The Encrypt String block uses advanced encryption to turn readable text into a scrambled string that can only be unlocked with the correct Secret. This is essential for storing sensitive information like external API keys or personal data.

Core Concept: The Digital Vault

Think of encryption like placing a note inside a high-security vault.

  • The Secret is the physical key.
  • The Initialization Vector (IV) is like a unique starting position for the lock's gears, ensuring that even if you store the same note twice, the resulting vault looks different from the outside.
Secret Management

If you lose your Secret, any data encrypted with it becomes permanently unreadable.

Configuration

FieldRequiredDescription
Secret✅The project secret used for encryption.
Input String✅The text you want to encrypt.
Encryption Algorithm✅Select the method: AES-256 (recommended) or AES-128.
Initialization Vector (IV)—Optional 32-character hex string. If left empty, a secure random IV is generated automatically.
Encoding Type✅How to format the final encrypted text: base64 or hex.
Encrypted Variable✅The name of the variable that will store the encrypted result.

Error Handling

  • SECRET_MISSING — Triggered when no secret is provided.
  • FIELD_MISSING — Triggered if the input, algorithm, or encoding fields are empty.
  • SECRET_RETRIEVE_ERROR — Triggered if the selected secret cannot be loaded.
  • ENCRYPTION_INVALID_KEY_LENGTH — Triggered if your secret isn't the correct length for the chosen algorithm.
  • ENCRYPTION_INVALID_ALGORITHM — Triggered if the specified algorithm is not supported.
  • ENCRYPTION_INPUT_TOO_LARGE — Triggered if the input data is too large to encrypt.
  • ENCRYPTION_FAILED — Triggered for general encryption failures.

Example: Storing a Third-Party API Key

  1. Secret: Select your STORAGE_ENCRYPTION_KEY.
  2. Input String: Enter the sensitive key, e.g., sk_live_51M....
  3. Encryption Algorithm: Select AES-256.
  4. Encoding Type: Select base64.
  5. Encrypted Variable: Enter encrypted_api_key.
  6. Result: The variable {encrypted_api_key} now contains a scrambled string that you can safely save to your database.

Decrypt String

Decrypt String

Unlock encrypted data using a secret key.

Generate Token

Create a secure, random string for authentication or identification.

On this page

Core Concept: The Digital Vault
Configuration
Error Handling
Example: Storing a Third-Party API Key
Related Blocks