Golang：使用标准库crypto/aes实现AES加密和解密

package main
import (
    "crypto/aes"
    "encoding/hex"
)
func EncryptAES(key string, plainText string) (string, error) {
    cipher, err := aes.NewCipher([]byte(key))
    if err != nil {
        return "", err
    }
    out := make([]byte, len(plainText))
    cipher.Encrypt(out, []byte(plainText))
    return hex.EncodeToString(out), nil
}
func DecryptAES(key string, encryptText string) (string, error) {
    decodeText, _ := hex.DecodeString(encryptText)
    cipher, err := aes.NewCipher([]byte(key))
    if err != nil {
        return "", err
    }
    out := make([]byte, len(decodeText))
    cipher.Decrypt(out, decodeText)
    return string(out[:]), nil
}

// cipher key
key := "thisisakeymustmorethan16"
// plaintext
text := "This is a secret"
encrypt, err := EncryptAES(key, text)
if err != nil {
    log.Fatal(err)
}
fmt.Println(encrypt)
// db647f5df56904ef3463834abc019c1d

// cipher key
key := "thisisakeymustmorethan16"
// decrypt
decrypt := "db647f5df56904ef3463834abc019c1d"
plaintext, err := DecryptAES(key, decrypt)
if err != nil {
    log.Fatal(err)
}
fmt.Println(plaintext)
// This is a secret