rsa加解密示例

Love The Way You Lie 2022-01-15 10:23 356阅读 0赞

[为什么80%的码农都做不了架构师？>>> ][80_] ![hot3.png][]

rsa加解密示例

package main
    
    import (
    	"crypto/rand"
    	"crypto/rsa"
    	"crypto/x509"
    	"encoding/base64"
    	"encoding/pem"
    	"errors"
    	"fmt"
    	// "log"
    )
    
    var privateKey = []byte(`
    -----BEGIN RSA PRIVATE KEY-----
    MIICXAIBAAKBgQDXQrrwRLUhFsgWw4snjemCYryE9+RigE9v7q2/smQI7/4H9TZn
    rce/jm80VMxqB6c4t60HbmvuO8WspAp2oN/tZ7jx9qSfCWJoRqI7WbgLovOvwW+h
    Yo6orIFsc9lFG8bVRxUUCozijTmJiorKzPis/DUv/yPObav+d1bwKzsJ9QIDAQAB
    AoGAP2sdgCP96R25HVvG54Rbw1oriFEwLAT5YlTDQ7Le3fM2uEl6GdmM+9aO1LAW
    +TYAAim7BHF3wtxBRLefjYuf7NsLuLmujvXQoxdWm+lXuNQxxiiaTxtuj/3NhymR
    NROww9JsAATHSFi6CtLbni3Y+sKYA+NQextcpgSrN4Urv5ECQQDdC8qHZ1q2Rj9F
    F+/2g+50L8f0/HDnkMwkRZgj4YnfOn219qXv1tO58W7+da7eQJ+SQVuISi6mFGOZ
    4FVQ28y/AkEA+Uy9SvkOK8Nrq926fxrXLXU5LQVAa7+bIpk2EWGpCJo+YtJYdKr1
    a+J+nMGQsjeX8m2DK6Q9IvmK1L/Ka5dySwJATmNlEjmT0Ln+q/j+LxTAVlGvfnCb
    dXNDAcXwWyEbbJ9of0QVuoUbloBJFVIUjlqqfApTdHSiMGFgpOwKNV+NLwJBAJVQ
    FP/Wc1pazR4+yvhdxwr+7qO8RX1DYVMzmGKIr4jrePoPKdOWoS9glJymgld7XJJi
    bPGyiLtt4mzSAha2ukkCQGV1X9i+aYN1YP45jGxiizVuRphIrfdAnbiKbYMEXm51
    NCtHHhLdIDnVu6tuP981eg87nEm8QQTvwjevSbWUmYY=
    -----END RSA PRIVATE KEY-----
    `)
    
    var publicKey = []byte(`
    -----BEGIN PUBLIC KEY-----
    MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDXQrrwRLUhFsgWw4snjemCYryE
    9+RigE9v7q2/smQI7/4H9TZnrce/jm80VMxqB6c4t60HbmvuO8WspAp2oN/tZ7jx
    9qSfCWJoRqI7WbgLovOvwW+hYo6orIFsc9lFG8bVRxUUCozijTmJiorKzPis/DUv
    /yPObav+d1bwKzsJ9QIDAQAB
    -----END PUBLIC KEY-----
    `)
    
    func main() {
    	var base64Str string
    
    	// rsa加密
    	// rsa加密成功后base64编码
    	data, err := RsaEncrypt([]byte("筑巢新游|18500214038|廖杰"))
    	if err == nil {
    		base64Str = base64.StdEncoding.EncodeToString(data)
    		fmt.Println("加密编码内容=>", base64Str)
    	} else {
    		fmt.Println("rsa加密结果", err)
    	}
    
    	// base64解码
    	// 确码成功后rsa解密
    	dataStr, bErr := base64.StdEncoding.DecodeString(base64Str)
    	if bErr == nil {
    		origData, rErr := RsaDecrypt(dataStr)
    		if rErr == nil {
    			fmt.Println("解码解密内容=>", string(origData))
    		} else {
    			fmt.Println("rsa解密结果：", rErr)
    		}
    
    	} else {
    		fmt.Println("base64解码结果：", bErr)
    	}
    
    }
    
    // 加密
    func RsaEncrypt(origData []byte) ([]byte, error) {
    	block, _ := pem.Decode(publicKey)
    	if block == nil {
    		return nil, errors.New("public key error")
    	}
    	pubInterface, err := x509.ParsePKIXPublicKey(block.Bytes)
    	if err != nil {
    		return nil, err
    	}
    	pub := pubInterface.(*rsa.PublicKey)
    	return rsa.EncryptPKCS1v15(rand.Reader, pub, origData)
    }
    
    // 解密
    func RsaDecrypt(ciphertext []byte) ([]byte, error) {
    	block, _ := pem.Decode(privateKey)
    	if block == nil {
    		return nil, errors.New("private key error!")
    	}
    	priv, err := x509.ParsePKCS1PrivateKey(block.Bytes)
    	if err != nil {
    		return nil, err
    	}
    	return rsa.DecryptPKCS1v15(rand.Reader, priv, ciphertext)
    }

转载于:https://my.oschina.net/golang/blog/387539

[80_]: https://my.oschina.net/u/2663968/blog/3051541
[hot3.png]: /images/20220115/f4c5b93a96a548d9a9a92662b5977f34.png