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cryptox.go
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cryptox.go
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package core
import (
"crypto/hmac"
"crypto/md5"
"crypto/rand"
"crypto/rsa"
"crypto/sha1"
"crypto/sha256"
"crypto/x509"
"encoding/base64"
"encoding/hex"
"encoding/pem"
"fmt"
"github.com/anaskhan96/go-password-encoder"
)
func MD5(byt []byte) string {
hash := md5.New()
_, _ = hash.Write(byt)
return fmt.Sprintf("%x", hash.Sum(nil))
}
func MD5Str(str string) string {
return MD5([]byte(str))
}
func SHA1(byt []byte) string {
hash := sha1.New()
_, _ = hash.Write(byt)
return fmt.Sprintf("%x", hash.Sum(nil))
}
func SHA1Str(str string) string {
return SHA1([]byte(str))
}
func SHA1MD5Str(str string) string {
return SHA1Str(MD5Str(str))
}
func SHA256(byt []byte) string {
hash := sha256.New()
hash.Write(byt)
return fmt.Sprintf("%x", hash.Sum(nil))
}
func SHA256Str(str string) string {
return SHA256([]byte(str))
}
func SHA256MD5Str(str string) string {
return SHA256Str(MD5Str(str))
}
func HmacSHA256(byt []byte, secret string) string {
h := hmac.New(sha256.New, []byte(secret))
h.Write(byt)
return hex.EncodeToString(h.Sum(nil))
}
func HmacSHA256Str(str string, secret string) string {
return HmacSHA256([]byte(str), secret)
}
func BASE64Encode(byt []byte) string {
encoded := base64.StdEncoding.EncodeToString(byt)
return encoded
}
func BASE64EncodeStr(str string) string {
encoded := BASE64Encode([]byte(str))
return encoded
}
func BASE64Decode(str string) ([]byte, error) {
decoded, err := base64.StdEncoding.DecodeString(str)
return decoded, err
}
func BASE64DecodeStr(str string) (string, error) {
decoded, err := BASE64Decode(str)
if err == nil {
decodedStr := string(decoded)
return decodedStr, nil
}
return "", err
}
// RSA加密
func GenRSAKeyPair(bits int) (*rsa.PrivateKey, *rsa.PublicKey, error) {
privateKey, err := rsa.GenerateKey(rand.Reader, bits)
if err != nil {
return nil, nil, err
}
publicKey := &privateKey.PublicKey
return privateKey, publicKey, err
}
func PublicKeyToString(publicKey *rsa.PublicKey) (string, error) {
publicKeyBytes, err := x509.MarshalPKIXPublicKey(publicKey)
if err != nil {
return "", err
}
publicKeyPem := pem.EncodeToMemory(&pem.Block{
Type: "PUBLIC KEY",
Bytes: publicKeyBytes,
})
publicKeyStr := base64.StdEncoding.EncodeToString(publicKeyPem)
return publicKeyStr, err
}
func PrivateKeyToString(privateKey *rsa.PrivateKey) (string, error) {
privateKeyBytes := x509.MarshalPKCS1PrivateKey(privateKey)
privateKeyPem := pem.EncodeToMemory(&pem.Block{
Type: "PRIVATE KEY",
Bytes: privateKeyBytes,
})
privateKeyStr := base64.StdEncoding.EncodeToString(privateKeyPem)
return privateKeyStr, nil
}
func PublicKeyB64StrToStruct(publicKeyStr string) (*rsa.PublicKey, error) {
publicKeyPem, err := base64.StdEncoding.DecodeString(publicKeyStr)
if err != nil {
return nil, fmt.Errorf("failed to decode PEM block in base64 format containing the private key")
}
block, _ := pem.Decode(publicKeyPem)
if block == nil {
return nil, fmt.Errorf("failed to parse PEM block containing the public key")
}
key, err := x509.ParsePKIXPublicKey(block.Bytes)
if err != nil {
return nil, err
}
rsaPublicKey, ok := key.(*rsa.PublicKey)
if !ok {
return nil, fmt.Errorf("parsed key is not an RSA public key")
}
return rsaPublicKey, nil
}
func PrivateKeyB64StrToStruct(privateKeyStr string) (*rsa.PrivateKey, error) {
privateKeyPem, err := base64.StdEncoding.DecodeString(privateKeyStr)
if err != nil {
return nil, fmt.Errorf("failed to decode PEM block in base64 format containing the private key")
}
block, _ := pem.Decode(privateKeyPem)
if block == nil {
return nil, fmt.Errorf("failed to parse PEM block containing the private key")
}
privateKey, err := x509.ParsePKCS1PrivateKey(block.Bytes)
if err != nil {
return nil, err
}
// x509.ParsePKCS1PrivateKey 返回的是 *rsa.PrivateKey 类型,
// 而不是一个通用的 crypto.PrivateKey,
// 所以在类型断言时不需要使用 .(*rsa.PrivateKey)
return privateKey, nil
}
func RSADecrypt(privateKey *rsa.PrivateKey, encryptedStr string) (string, error) {
cipherTextB64, err := base64.StdEncoding.DecodeString(encryptedStr)
if err != nil {
return "", err
}
decryptedBytes, err := rsa.DecryptPKCS1v15(rand.Reader, privateKey, cipherTextB64)
if err != nil {
return "", err
}
return string(decryptedBytes), nil
}
func RSAEncrypt(publicKey *rsa.PublicKey, str string) (string, error) {
encryptedBytes, err := rsa.EncryptPKCS1v15(rand.Reader, publicKey, []byte(str))
if err != nil {
return "", err
}
encryptedStr := base64.StdEncoding.EncodeToString(encryptedBytes)
return encryptedStr, nil
}
func GetPrivateKey() *rsa.PrivateKey {
return GetConfig().App.PrivateKey
}
func GetPublicKey() *rsa.PublicKey {
return GetConfig().App.PublicKey
}
func GetPublicKeyStr() string {
return GetConfig().App.PublicKeyStr
}
// password加密
func GetPwdEncodingOpts() *password.Options {
return &password.Options{
SaltLen: 16,
Iterations: 64,
KeyLen: 16,
HashFunction: md5.New,
}
}
func GetEncodedPwd(pwd string) (string, string) {
salt, encodedPwd := password.Encode(pwd, GetPwdEncodingOpts())
return salt, encodedPwd
}
func VerifyEncodedPwd(pwdHeldRaw string, salt string, pwdTarget string) bool {
return password.Verify(pwdHeldRaw, salt, pwdTarget, GetPwdEncodingOpts())
}