crypto.scryptSync(password, salt, keylen[, options])


提供同步的 scrypt 实现。 Scrypt 是一个基于密码的密钥派生函数,其设计在计算和内存方面都非常昂贵,以使蛮力攻击毫无回报。

salt 应该尽可能唯一。 建议盐是随机的,长度至少为 16 字节。 有关详细信息,请参阅 NIST SP 800-132

当密钥派生失败时抛出异常,否则派生的密钥作为 Buffer 返回。

当任何输入参数指定无效值或类型时,将抛出异常。

const crypto = require('crypto');
// 使用出厂默认设置。
const key1 = crypto.scryptSync('secret', 'salt', 64);
console.log(key1.toString('hex'));  // '3745e48...08d59ae'
// 使用自定义 N 参数。必须是二的幂。
const key2 = crypto.scryptSync('secret', 'salt', 64, { N: 1024 });
console.log(key2.toString('hex'));  // '3745e48...aa39b34'

Provides a synchronous scrypt implementation. Scrypt is a password-based key derivation function that is designed to be expensive computationally and memory-wise in order to make brute-force attacks unrewarding.

The salt should be as unique as possible. It is recommended that a salt is random and at least 16 bytes long. See NIST SP 800-132 for details.

An exception is thrown when key derivation fails, otherwise the derived key is returned as a Buffer.

An exception is thrown when any of the input arguments specify invalid values or types.

const crypto = require('crypto');
// Using the factory defaults.
const key1 = crypto.scryptSync('secret', 'salt', 64);
console.log(key1.toString('hex'));  // '3745e48...08d59ae'
// Using a custom N parameter. Must be a power of two.
const key2 = crypto.scryptSync('secret', 'salt', 64, { N: 1024 });
console.log(key2.toString('hex'));  // '3745e48...aa39b34'