聊聊如何使用Go语言来实现密码算法

package main

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

func main() {
    key := []byte("0123456789abcdef")
    plaintext := []byte("hello world")
    block, err := aes.NewCipher(key)
    if err != nil {
        panic(err)
    }

    ciphertext := make([]byte, len(plaintext))
    block.Encrypt(ciphertext, plaintext)

    fmt.Printf("%s\n", ciphertext)
}

package main

import (
    "crypto/rand"
    "crypto/rsa"
    "crypto/x509"
    "encoding/pem"
    "fmt"
)

func main() {
    privKey, err := rsa.GenerateKey(rand.Reader, 2048)
    if err != nil {
        panic(err)
    }

    pubKey := privKey.PublicKey

    plainText := []byte("hello world")
    ciphertext, err := rsa.EncryptPKCS1v15(rand.Reader, &pubKey, plainText)
    if err != nil {
        panic(err)
    }

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

    decryptedText, err := rsa.DecryptPKCS1v15(rand.Reader, privKey, ciphertext)
    if err != nil {
        panic(err)
    }

    fmt.Printf("decrypted text: %s\n", decryptedText)
}