代码片段：AES 加解密代码

function encrypt (plaintext) {
var algorithm = 'aes-256-cbc'
var key = 'I am a happy key.'
var sha256sum = crypto.createHash('sha256')
var _key = sha256sum.update(key).digest()
var _iv = 'IaMaHaPpYkEyKeY.'
const cipher = crypto.createCipheriv(algorithm, _key, _iv)
var encrypted = cipher.update(plaintext, 'binary', 'hex') + cipher.final('hex')
return encrypted
}

function decrypt (encrypted) {
var algorithm = 'aes-256-cbc'
var key = 'I am a happy key.'
var sha256sum = crypto.createHash('sha256')
var _key = sha256sum.update(key).digest()
var _iv = 'IaMaHaPpYkEyKeY.'
const decipher = crypto.createDecipheriv(algorithm, _key, _iv)
var decrypted = decipher.update(encrypted, 'hex', 'binary') + decipher.final('binary')
return decrypted
}

关键字：aes, JavaScript, var, key

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