All files / src/encryption cipherAesCbc.ts

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Press n or j to go to the next uncovered block, b, p or k for the previous block.

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// eslint-disable-next-line import/no-nodejs-modules
import { createCipheriv, createDecipheriv } from 'crypto'
import { Cipher } from './cryptoUtils'
 
// TODO: Create a WebCrypto implementation for browser usage
 
class NodeCryptoAes256CbcCipher implements Cipher {
  async encrypt(key: NodeJS.TypedArray, iv: NodeJS.TypedArray, data: NodeJS.TypedArray): 
    Promise<Buffer> {
    const cipher = createCipheriv('aes-256-cbc', key, iv)
    const result = Buffer.concat([cipher.update(data), cipher.final()])
    return Promise.resolve(result)
  }
 
  async decrypt(key: NodeJS.TypedArray, iv: NodeJS.TypedArray, data: NodeJS.TypedArray): 
    Promise<Buffer> {
    const cipher = createDecipheriv('aes-256-cbc', key, iv)
    const result = Buffer.concat([cipher.update(data), cipher.final()])
    return Promise.resolve(result)
  }
}
 
class NodeCryptoAes128CbcCipher implements Cipher {
  async encrypt(key: NodeJS.TypedArray, iv: NodeJS.TypedArray, data: NodeJS.TypedArray): 
    Promise<Buffer> {
    const cipher = createCipheriv('aes-128-cbc', key, iv)
    const result = Buffer.concat([cipher.update(data), cipher.final()])
    return Promise.resolve(result)
  }
 
  async decrypt(key: NodeJS.TypedArray, iv: NodeJS.TypedArray, data: NodeJS.TypedArray): 
    Promise<Buffer> {
    const cipher = createDecipheriv('aes-128-cbc', key, iv)
    const result = Buffer.concat([cipher.update(data), cipher.final()])
    return Promise.resolve(result)
  }
}
 
export function createCipherAes256Cbc(): Cipher {
  return new NodeCryptoAes256CbcCipher()
}
 
export function createCipherAes128Cbc(): Cipher {
  return new NodeCryptoAes128CbcCipher()
}