Go语言加解密--AES简单实践

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