Go语言加解密--AES简单实践
阅读原文时间:2020年09月22日阅读:13

AES加解密的简单实现,代码如下。

package main

import (
    "crypto/aes"
    "crypto/cipher"
    "encoding/hex"
    "fmt"
)

func main(){

    nonce := "37b8e8a308c354048d245f6d"
    key := "AES256Key-32Characters1234567890"
    plainText := "172.10.99.88"
    cipherText :=   ExampleNewGCM_encrypt(plainText, key, nonce)
    newPlain := ExampleNewGCM_decrypt(cipherText, key, nonce)

    fmt.Println("plain:", plainText)
    fmt.Println("cipher:", cipherText)
    fmt.Println("new plain:", newPlain)
}

func ExampleNewGCM_encrypt(src, k, n string)string {
    // The key argument should be the AES key, either 16 or 32 bytes
    // to select AES-128 or AES-256.
    key := []byte(k)
    plaintext := []byte(src)

    block, err := aes.NewCipher(key)
    if err != nil {
        panic(err.Error())
    }

    nonce, _ := hex.DecodeString(n)

    aesgcm, err := cipher.NewGCM(block)
    if err != nil {
        panic(err.Error())
    }

    ciphertext := aesgcm.Seal(nil, nonce, plaintext, nil)

    return fmt.Sprintf("%x", ciphertext)
}

func ExampleNewGCM_decrypt(src, k, n string) string {
    // The key argument should be the AES key, either 16 or 32 bytes
    // to select AES-128 or AES-256.
    key := []byte(k)
    ciphertext, _ := hex.DecodeString(src)

    nonce, _ := hex.DecodeString(n)

    block, err := aes.NewCipher(key)
    if err != nil {
        panic(err.Error())
    }

    aesgcm, err := cipher.NewGCM(block)
    if err != nil {
        panic(err.Error())
    }

    plaintext, err := aesgcm.Open(nil, nonce, ciphertext, nil)
    if err != nil {
        panic(err.Error())
    }

    return string(plaintext)
}

Output:

plain: 172.10.99.88

cipher: 4456f9258c204906cbb2516e1fc78c3fbbf439e9e7d49189a391ee33

new plain: 172.10.99.88

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