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Package主要用于进行常见密码（如AES）加密和解密功能的实现
Imports
├── crypto/aes
├── crypto/cipher
├── fmt
├── os
Global Variables
├── commonIV：包含从0x00到0x0F的十六个字节组成的初始化向量
Functions
├── main()
│   ▶ 避免用户的密码长度超过30个字符
│   ▶ 定义常用密码"thisisthepassword"
│   ▶ 定义密钥字符串
│   ▶ 调用Encrypt进行加密
│   ▶ 调用Decrypt进行解密
Encrypt Function
├── NewCipher用于创建AES加密对象
├── 使用CFB加密算法（常短反向密钥流加密）
├── 定义加密后的字节数，等于密码字节数
├── 通过XORKeyStream方法将密钥流应用到明文上，生成加密结果
Decrypt Function
├── 使用与Encrypt相同的过程解密
├── 创建CFB解密器
├── 使用与加密相同的XORKeyStream方法恢复原始密码
This code provides a complete implementation of AES encryption and decryption
Explanation of the Code
(Mathematical Deduction and Logical Analysis)
The given code implements AES encryption and decryption using GoLang
The code first defines the package and necessary imports
It initializes a common initialization vector (commonIV) for the encryption process
The main function demonstrates the usage of both encryption and decryption functions
The encryption function creates an AES cipher using the provided key
It then uses a CFB (Constant Fractional Lionel Block) encrypter with the commonIV to encrypt the provided password
The encryptor applies the XOR key stream algorithm across the ciphertext buffer
The decryption process is analogous, using a CFB decrypter with the same commonIV to decrypt the ciphertext and retrieve the original password

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