crypto Cipher/Decipher validation issues

This also affects Decipher methods.

Here's an example:

const { createCipheriv, randomBytes } = require('crypto');

const cipher = createCipheriv('aes-256-cbc', randomBytes(32), randomBytes(16));

cipher.update('test', 'utf-8', 'bad');

Gives an internal assertion:

Error [ERR_INTERNAL_ASSERTION]: Cannot change encoding
This is caused by either a bug in Node.js or incorrect usage of Node.js internals.
Please open an issue with this stack trace at https://github.com/nodejs/node/issues

final has the same issue:

const { createCipheriv, randomBytes } = require('crypto');

const cipher = createCipheriv('aes-256-cbc', randomBytes(32), randomBytes(16));

cipher.update('test', 'utf-8', 'utf-8');
cipher.final('bad');

Other issue:

const { createCipheriv, randomBytes } = require('crypto');

const cipher = createCipheriv('aes-256-cbc', randomBytes(32), randomBytes(16));

let result = cipher.update('test', 'bad', 'hex');
result += cipher.final('hex');
console.log(result);

Gives no error at all for the wrong input encoding.

@nodejs/crypto

首先运行 issue 中的 Cipher 和 Decipher 示例，并检查它们所经过的 crypto Cipher/Decipher 方法路径。比较 update 和 final 对无效输入编码与输出编码的处理。完成的标准是：无效编码会收到适当的验证错误，而不是触发内部断言或被静默接受。