golang实现md5、RSA、base64 加密解密

概述package toolsimport ( "crypto/md5" "crypto/rand" "crypto/rsa" "crypto/x509" "encoding/base64" "encoding/hex" "encoding/pem" "errors")const ( base64Table = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcd

package toolsimport (	"crypto/md5"	"crypto/rand"	"crypto/rsa"	"crypto/x509"	"enCoding/base64"	"enCoding/hex"	"enCoding/pem"	"errors")const (	base64table = "ABCDEFGHIJKLMnopQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/")var coder = base64.NewEnCoding(base64table)func Base64Encode(src []byte) []byte {	return []byte(coder.EncodetoString(src))}func Base64Decode(src []byte) ([]byte,error) {	return coder.DecodeString(string(src))}func RSAEncrypt(origData []byte,publicKey string) ([]byte,error) {	block,_ := pem.Decode([]byte(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)}func RsaDecrypt(ciphertext []byte,privateKey string) ([]byte,_ := pem.Decode([]byte(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)}func Md5Encrypt(data string) string {	md5Ctx := md5.New()                            //md5 init	md5Ctx.Write([]byte(data))                     //md5 updata	cipherStr := md5Ctx.Sum(nil)                   //md5 final	encryptedData := hex.EncodetoString(cipherStr) //hex_digest	return encryptedData}

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