XOR decryption in Golang: Are you familiar with it?

XOR decryption in Golang: Do you understand it?

Introduction:
There is a commonly used encryption and decryption technology in the Golang programming language, which uses the XOR symbol (^) to perform simple encryption and decryption operations. This technology can play a great role in some simple encryption requirements scenarios, and it can also help us gain a deeper understanding of the principles and applications of XOR operations. This article will introduce XOR decryption in Golang and demonstrate it through specific code examples.

1. Principle of XOR operation
XOR operation (XOR) is a common bit operation in computers. Its operation rules are as follows:

• If two operations If the corresponding bits of the numbers are the same, the result is 0;
• If the corresponding bits of the two operands are different, the result is 1.

An important feature of the XOR operation is that if two consecutive XOR operations are performed on the same operand, the result will be equal to the operand itself.

2. Example of XOR decryption in Golang
The following is a sample code that demonstrates how to use the XOR symbol to perform simple encryption and decryption operations:

package main

import (
    "fmt"
)

func encrypt(plaintext string, key rune) string {
    ciphertext := make([]byte, len(plaintext))
    for i, c := range plaintext {
        ciphertext[i] = byte(c) ^ byte(key)
    }
    return string(ciphertext)
}

func decrypt(ciphertext string, key rune) string {
    plaintext := make([]byte, len(ciphertext))
    for i, c := range ciphertext {
        plaintext[i] = byte(c) ^ byte(key)
    }
    return string(plaintext)
}

func main() {
    plaintext := "Hello, XOR!"
    key := 'K' // 使用单个字符作为加密/解密的密钥

    // 加密
    ciphertext := encrypt(plaintext, key)
    fmt.Println("加密后的结果：", ciphertext)

    // 解密
    decryptedText := decrypt(ciphertext, key)
    fmt.Println("解密后的结果：", decryptedText)
}

In the above code , encrypt function is used to encrypt plaintext and accepts two parameters: plaintext string and key (represented by rune type). Inside the encrypt function, use the XOR symbol ^ to encrypt each character, save the encrypted characters in the ciphertext slice, and finally return the encryption result through conversion. The

decrypt function is used to decrypt ciphertext. It is similar to the encrypt function and also accepts two parameters: the ciphertext string and the key. Inside the decrypt function, use the XOR symbol ^ to decrypt each character, save the decrypted characters in the plaintext slice, and finally return the decrypted result through conversion.

In the main function, we define a plaintext string and a key character. First call the encrypt function to encrypt the plain text to obtain the cipher text and print it out. Then use the decrypt function to decrypt the ciphertext to obtain the plaintext, and print it out as well.

Run the above code, we can get the following output:

加密后的结果： "÷ÁªÊÅÁP"
解密后的结果： "Hello, XOR!"

Through the above example code, we can see how simple it is to use the XOR operator to perform simple encryption and decryption operations in Golang and efficient. Of course, this simple XOR decryption technology is only suitable for some simple scenarios and is not suitable for advanced encryption requirements. In practical applications, appropriate encryption algorithms need to be selected according to requirements to ensure security.

Conclusion:
The XOR operation is very flexible in Golang and can be used for simple encryption and decryption operations. Through the introduction of this article, we understand the principle of XOR operation and its specific application in Golang. I hope this article can help you better understand and apply XOR decryption technology. At the same time, attention needs to be paid to selecting appropriate encryption algorithms to ensure data security during actual development.

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