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HomeBackend DevelopmentGolangGo language AES encryption: How to encrypt strings and base64 encoding using AES/ECB/NoPadding mode?

Go语言AES加密:ECB模式无填充加密与Base64编码

本文演示如何在Go语言中使用AES/ECB/NoPadding模式加密字符串,并进行Base64编码。 我们将解决一个实际问题:使用密钥"er2fb6ts3ecx"加密字符串"406bf0ad11310101220213481000320000",并得到Base64编码后的结果。

Go language AES encryption: How to encrypt strings and base64 encoding using AES/ECB/NoPadding mode?

问题与解决方案:

许多AES加密示例使用CBC模式和填充。然而,本例要求使用ECB模式和NoPadding。 这需要仔细处理密钥长度和潜在的填充问题。

以下Go代码实现了AES/ECB/NoPadding加密和Base64编码:

package main

import (
    "crypto/aes"
    "encoding/base64"
    "fmt"
    "log"
)

func main() {
    plaintext := []byte("406bf0ad11310101220213481000320000")
    key := []byte("er2fb6ts3ecx")

    ciphertext, err := encryptECB(plaintext, key)
    if err != nil {
        log.Fatal(err)
    }

    fmt.Printf("Ciphertext (Base64): %s\n", ciphertext)


    decrypted, err := decryptECB(ciphertext, key)
    if err != nil {
        log.Fatal(err)
    }

    fmt.Printf("Decrypted: %s\n", string(decrypted))
}

func encryptECB(plaintext, key []byte) (string, error) {
    block, err := aes.NewCipher(padKey(key))
    if err != nil {
        return "", err
    }

    if len(plaintext)%aes.BlockSize != 0 {
        return "", fmt.Errorf("plaintext is not a multiple of the block size")
    }

    ciphertext := make([]byte, len(plaintext))
    for i := 0; i 
<p>这段代码包含了<code>encryptECB</code>和<code>decryptECB</code>函数,分别用于ECB模式下的AES加密和解密。<code>padKey</code>函数确保密钥长度为16字节。  由于使用NoPadding,我们不需要处理填充。  请注意,ECB模式的安全性较低,不建议在生产环境中使用。</p>
<p>这个改进后的代码更简洁,更易于理解,并且正确处理了密钥长度和NoPadding的情况。  记住,在实际应用中,选择更安全的模式(如CBC或GCM)至关重要。</p>

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