AsymCrypt optimize + Symcrypt creation

symcrypt.go

@@ -0,0 +1,67 @@
+package meowlib
+
+import (
+	"encoding/base64"
+
+	"github.com/ProtonMail/gopenpgp/v2/crypto"
+	"github.com/ProtonMail/gopenpgp/v2/helper"
+	"github.com/pkg/errors"
+	"github.com/rs/zerolog/log"
+)
+
+func SymEncrypt(password string, data []byte) ([]byte, error) {
+	var pgpMessage *crypto.PGPMessage
+	var err error
+	var message = crypto.NewPlainMessage(data)
+
+	pgpMessage, err = crypto.EncryptMessageWithPassword(message, []byte(password))
+	if err != nil {
+		return nil, errors.Wrap(err, "gopenpgp: unable to encrypt message with password")
+	}
+	return pgpMessage.GetBinary(), nil
+}
+
+func SymDecrypt(password string, data []byte) ([]byte, error) {
+	var message *crypto.PlainMessage
+	var pgpMessage *crypto.PGPMessage
+	var err error
+
+	pgpMessage = crypto.NewPGPMessage(data)
+	message, err = crypto.DecryptMessageWithPassword(pgpMessage, []byte(password))
+	if err != nil {
+		return nil, errors.Wrap(err, "gopenpgp: unable to decrypt message with password")
+	}
+	return message.GetBinary(), nil
+}
+
+func SymEncryptAndSign(PublicEncryptionKey string, PrivateSignatureKey string, data []byte) ([]byte, []byte, error) {
+	pub, err := base64.StdEncoding.DecodeString(PublicEncryptionKey)
+	if err != nil {
+		log.Error().Msg("Message encryption and sign b64 failed")
+	}
+	priv, err := base64.StdEncoding.DecodeString(PrivateSignatureKey)
+	if err != nil {
+		log.Error().Msg("Message encryption and sign b64 failed")
+	}
+	encrypted, signature, err := helper.EncryptSignBinaryDetached(string(pub), string(priv), nil, data)
+	if err != nil {
+		log.Error().Msg("Message encryption and sign failed")
+	}
+	return []byte(encrypted), []byte(signature), err
+}
+
+func SymDecryptAndCheck(MyPrivateEncryptionKey string, MyContactPublicKey string, data []byte, Signature []byte) (DecryptedMessage []byte, err error) {
+	pub, err := base64.StdEncoding.DecodeString(MyPrivateEncryptionKey)
+	if err != nil {
+		log.Error().Msg("Message decryption and sign b64 failed")
+	}
+	priv, err := base64.StdEncoding.DecodeString(MyContactPublicKey)
+	if err != nil {
+		log.Error().Msg("Message decryption and sign b64 failed")
+	}
+	DecryptedMessage, err = helper.DecryptVerifyBinaryDetached(string(pub), string(priv), nil, data, string(Signature))
+	if err != nil {
+		log.Error().Msg("Message decryption and sign failed")
+	}
+	return DecryptedMessage, err
+}