58 lines
1.2 KiB
Go
58 lines
1.2 KiB
Go
package utils
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import (
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"crypto/rand"
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"crypto/rsa"
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"crypto/x509"
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"encoding/pem"
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"errors"
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)
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type Encrypt struct {
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pubKey string
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privKey string
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}
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func NewEncrypt(pubKey, privKey string) *Encrypt {
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return &Encrypt{pubKey: pubKey, privKey: privKey}
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}
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func (e *Encrypt) EncryptStr(str string) ([]byte, error) {
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block, _ := pem.Decode([]byte(e.pubKey))
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if block == nil {
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return nil, errors.New("failed to parse PEM block containing the public key")
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}
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pub, err := x509.ParsePKIXPublicKey(block.Bytes)
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if err != nil {
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return nil, err
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}
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rsaPubKey, ok := pub.(*rsa.PublicKey)
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if !ok {
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return nil, errors.New("failed to parse RSA public key")
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}
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shifr, err := rsa.EncryptPKCS1v15(rand.Reader, rsaPubKey, []byte(str))
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if err != nil {
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return nil, err
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}
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return shifr, nil
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}
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func (e *Encrypt) DecryptStr(shifr []byte) (string, error) {
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block, _ := pem.Decode([]byte(e.privKey))
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if block == nil {
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return "", errors.New("failed to parse PEM block containing the private key")
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}
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priv, err := x509.ParsePKCS1PrivateKey(block.Bytes)
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if err != nil {
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return "", err
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}
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res, err := rsa.DecryptPKCS1v15(rand.Reader, priv, shifr)
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if err != nil {
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return "", err
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}
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return string(res), nil
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}
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