# All files / src/encryption cipherAes256Cbc.ts

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     // eslint-disable-next-line import/no-nodejs-modules
    import { createCipheriv, createDecipheriv } from 'crypto'
    import { Cipher } from './cryptoInterfaces'

    // 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)
      }
    }

    export function createCipherAes256Cbc(): Cipher {
      return new NodeCryptoAes256CbcCipher()
    }