Node.js Crypto Module
Example
Encrypt the text 'abc'
var crypto = require('crypto');
var mykey = crypto.createCipher('aes-128-cbc',
'mypassword');
var mystr = mykey.update('abc', 'utf8', 'hex')
mystr +=
mykey.update.final('hex');
console.log(mystr);
//34feb914c099df25794bf9ccb85bea72
Run example »
Example
Decrypt back to 'abc'
var crypto = require('crypto');
var mykey = crypto.createDecipher('aes-128-cbc',
'mypassword');
var mystr = mykey.update('34feb914c099df25794bf9ccb85bea72',
'hex', 'utf8')
mystr += mykey.update.final('utf8');
console.log(mystr);
//abc
Run example »
Definition and Usage
The crypto module provides a way of handling encrypted data.
Syntax
The syntax for including the crypto module in your application:
var crypto = require('crypto');
Crypto Properties and Methods
| Method | Description |
|---|---|
| constants | Returns an object containing Crypto Constants |
| fips | Checks if a FIPS crypto provider is in use |
| createCipher() | Creates a Cipher object using the specific algorithm and password |
| createCipheriv() | Creates a Cipher object using the specific algorithm, password and initialization vector |
| createDecipher() | Creates a Decipher object using the specific algorithm and password |
| createDecipheriv() | Creates a Decipher object using the specific algorithm, password and initialization vector |
| createDiffieHellman() | Creates a DiffieHellman key exchange object |
| createECDH() | Creates an Elliptic Curve Diffie Hellmann key exchange object |
| createHash() | Creates a Hash object using the specified algorithm |
| createHmac() | Creates a Hmac object using the specified algorithm and key |
| createSign() | Creates a Sign object using the specified algorithm and key |
| createVerify() | Creates a Verify object using the specified algorithm |
| getCiphers | Returns an array of supported cipher algorithms |
| getCurves() | Returns an array of supported elliptic curves |
| getDiffieHellman() | Returns a predefined Diffie Hellman key exchange object |
| getHashes() | Returns an array of supported hash algorithms |
| pbkdf2() | Creates a Password Based Key Derivation Function 2 implementation |
| pbkdf2Sync() | Creates a synchronous Password Based Key Derivation Function 2 implementation |
| privateDecrypt() | Decrypts data using a private key |
| timingSafeEqual() | Compare two Buffers and returns true is they are equal, otherwise false |
| privateEncrypt() | Encrypts data using a private key |
| publicDecrypt() | Decrypts data using a public key |
| publicEncrypt() | Encrypts data using a public key |
| randomBytes() | Creates random data |
| setEngine() | Sets the engine for some or all OpenSSL function |
