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

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

Apr 02, 2025 am 10:30 AM
go language ai

Go語言AES加密:ECB模式無填充加密與Base64編碼

本文演示如何在Go語言中使用AES/ECB/NoPadding模式加密字符串,并進(jìn)行Base64編碼。 我們將解決一個(gè)實(shí)際問題:使用密鑰"er2fb6ts3ecx"加密字符串"406bf0ad11310101220213481000320000",并得到Base64編碼后的結(jié)果。

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

問題與解決方案:

許多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。 這需要仔細(xì)處理密鑰長度和潛在的填充問題。

以下Go代碼實(shí)現(xiàn)了AES/ECB/NoPadding加密和Base64編碼:

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>這段代碼包含了<code>encryptECB</code>和<code>decryptECB</code>函數(shù),分別用于ECB模式下的AES加密和解密。<code>padKey</code>函數(shù)確保密鑰長度為16字節(jié)。  由于使用NoPadding,我們不需要處理填充。  請注意,ECB模式的安全性較低,不建議在生產(chǎn)環(huán)境中使用。</p>
<p>這個(gè)改進(jìn)后的代碼更簡潔,更易于理解,并且正確處理了密鑰長度和NoPadding的情況。  記住,在實(shí)際應(yīng)用中,選擇更安全的模式(如CBC或GCM)至關(guān)重要。</p>

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