Crypto Process (Node)

Through the Crypto feature, you can perform cryptographic operations within your workflow, such as securely encrypting and decrypting data, and generating hash values.
The main supported features are as follows:
- Hash Generation : Generates a hash value for data using a specified algorithm. Hashes are primarily used for data integrity verification or as unique identifiers. Hash functions are one-way functions, meaning the original data cannot be recovered from the hash value.
- HMAC Generation : HMAC (Hash-based Message Authentication Code) is a method that uses a secret key and a hash function to simultaneously ensure message integrity and authenticity.
- AES Encryption/Decryption : Uses the AES (Advanced Encryption Standard) algorithm to encrypt data or decrypt encrypted data.
  Key and IV Length: You must use keys and IVs of the correct length for the selected algorithm. An error will occur if the lengths do not match.
  
  AES-128 uses a 16-byte key, and AES-256 uses a 32-byte key.
  
  GCM uses a 12-byte IV, while CBC and CTR use a 16-byte IV. ECB mode does not use an IV.
  
  The IV should be an unpredictable value (a random value is recommended) to enhance security.
  
  Caution for ECB Mode Usage: ECB mode is highly vulnerable in terms of security, so if data has patterns, these patterns may be exposed even after encryption. Unless there is a special reason, using GCM, CBC, or CTR modes is strongly recommended.
  
  Decryption: For successful decryption, the algorithm, key, IV, and encoding method used during encryption must be exactly the same.
- AES encryption/decryption
  - Supported algorithms: aes-128-cbc, aes-128-ctr, aes-128-ecb, aes-128-gcm, aes-256-cbc, aes-256-ctr, aes-256-ecb, aes-256-gcm
  - gcm uses 12 bytes of IV, and cbc, ctr use 16 bytes of IV.
  - aes-128 uses 16 bytes of key, and aes-256 uses 32 bytes of key.
  - ecb does not use IV.
  - Supported encoding: BASE64, BASE64URL, HEX
  - examples
```
- ${_crypto.aesEncrypt('aes-128-cbc', '1234567890abcdef', '1234567890abcdef', 'hello world! AES test' , 'BASE64')} //algorithm, key, IV, data, encoding
- ${_crypto.aesDecrypt('aes-128-cbc', '1234567890abcdef', '1234567890abcdef', 'VNNcilaX3Kwx18uWAOxj131D+TJC+bClZkphy9Uc7uE=', 'BASE64' )} //algorithm, key, IV, data, encoding
- ${_crypto.aesEncrypt('aes-128-ecb', '1234567890abcdef', '', 'hello world! AES test' , 'BASE64')}
- ${_crypto.aesDecrypt('aes-128-ecb', '1234567890abcdef', '', 'pthuu1WOb4pEFRhiP0JWfyozLaP2pIU/jPmxN+HgudU=' , 'BASE64')}
- ${_crypto.aesDecrypt('aes-128-ecb', '1234567890abcdef', '', ${this.data} , 'BASE64')} //When using variables as arguments in a function, do not use quotation marks. If quotation marks (single or double) are used, they are recognized as strings.
```
- Hash
  - Supported algorithms: MD5, SHA256, SHA384, SHA512, SHA3-256, SHA3-384, SHA3-512
  - Supported encoding: BASE64, BASE64URL, HEX
  - examples
```
- ${_crypto.hash('MD5', 'hello world! hash test', 'BASE64')} //algorithm, data, encoding
- ${_crypto.hash('MD5', 'hello world! hash test', 'HEX')} //algorithm, data, encoding
```
- HMAC
  - Supported algorithms: MD5, SHA256, SHA384, SHA512, SHA3-256, SHA3-384, SHA3-512
  - Supported encoding: BASE64, BASE64URL, HEX
  - examples
```
- ${_crypto.hmac('SHA256', '1234567890abcdef', 'hello world! hmac test', 'BASE64')}  //algorithm, Secret Key, data, encoding
```