golang RSA加密解密程序

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package main

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

// 加密
func RsaEncrypt(origData []byte) ([]byte, error) {
block, _ := pem.Decode(publicKey) //将密钥解析成公钥实例
if block == nil {
return nil, errors.New("public key error")
}
pubInterface, err := x509.ParsePKIXPublicKey(block.Bytes) //解析pem.Decode（）返回的Block指针实例
if err != nil {
return nil, err
}
pub := pubInterface.(*rsa.PublicKey)
return rsa.EncryptPKCS1v15(rand.Reader, pub, origData) //RSA算法加密
}

// 解密
func RsaDecrypt(ciphertext []byte) ([]byte, error) {
block, _ := pem.Decode(privateKey) //将密钥解析成私钥实例
if block == nil {
return nil, errors.New("private key error!")
}
priv, err := x509.ParsePKCS1PrivateKey(block.Bytes) //解析pem.Decode（）返回的Block指针实例
if err != nil {
return nil, err
}
return rsa.DecryptPKCS1v15(rand.Reader, priv, ciphertext) //RSA算法解密
}

//私钥
var privateKey = []byte(`
-----BEGIN RSA PRIVATE KEY-----
MIICXQIBAAKBgQDZsfv1qscqYdy4vY+P4e3cAtmvppXQcRvrF1cB4drkv0haU24Y
7m5qYtT52Kr539RdbKKdLAM6s20lWy7+5C0DgacdwYWd/7PeCELyEipZJL07Vro7
Ate8Bfjya+wltGK9+XNUIHiumUKULW4KDx21+1NLAUeJ6PeW+DAkmJWF6QIDAQAB
AoGBAJlNxenTQj6OfCl9FMR2jlMJjtMrtQT9InQEE7m3m7bLHeC+MCJOhmNVBjaM
ZpthDORdxIZ6oCuOf6Z2+Dl35lntGFh5J7S34UP2BWzF1IyyQfySCNexGNHKT1G1
XKQtHmtc2gWWthEg+S6ciIyw2IGrrP2Rke81vYHExPrexf0hAkEA9Izb0MiYsMCB
/jemLJB0Lb3Y/B8xjGjQFFBQT7bmwBVjvZWZVpnMnXi9sWGdgUpxsCuAIROXjZ40
IRZ2C9EouwJBAOPjPvV8Sgw4vaseOqlJvSq/C/pIFx6RVznDGlc8bRg7SgTPpjHG
4G+M3mVgpCX1a/EU1mB+fhiJ2LAZ/pTtY6sCQGaW9NwIWu3DRIVGCSMm0mYh/3X9
DAcwLSJoctiODQ1Fq9rreDE5QfpJnaJdJfsIJNtX1F+L3YceeBXtW0Ynz2MCQBI8
9KP274Is5FkWkUFNKnuKUK4WKOuEXEO+LpR+vIhs7k6WQ8nGDd4/mujoJBr5mkrw
DPwqA3N5TMNDQVGv8gMCQQCaKGJgWYgvo3/milFfImbp+m7/Y3vCptarldXrYQWO
AQjxwc71ZGBFDITYvdgJM1MTqc8xQek1FXn1vfpy2c6O
-----END RSA PRIVATE KEY-----
`)

//公钥
var publicKey = []byte(`
-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDZsfv1qscqYdy4vY+P4e3cAtmv
ppXQcRvrF1cB4drkv0haU24Y7m5qYtT52Kr539RdbKKdLAM6s20lWy7+5C0Dgacd
wYWd/7PeCELyEipZJL07Vro7Ate8Bfjya+wltGK9+XNUIHiumUKULW4KDx21+1NL
AUeJ6PeW+DAkmJWF6QIDAQAB
-----END PUBLIC KEY-----
`)

func main() {

data, err := RsaEncrypt([]byte("polaris@studygolang.com")) //RSA加密
if err != nil {
panic(err)
}
fmt.Println("RSA加密", string(data))
origData, err := RsaDecrypt(data) //RSA解密
if err != nil {
panic(err)
}
fmt.Println("RSA解密", string(origData))
}

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