rsa加解密示例-蒲公英云

rsa加解密示例

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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-----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-----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)
}