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.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.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 |