github.com/igggame/nebulas-go@v2.1.0+incompatible/crypto/cipher/cipher.go (about)

     1  // Copyright (C) 2017 go-nebulas authors
     2  //
     3  // This file is part of the go-nebulas library.
     4  //
     5  // the go-nebulas library is free software: you can redistribute it and/or modify
     6  // it under the terms of the GNU General Public License as published by
     7  // the Free Software Foundation, either version 3 of the License, or
     8  // (at your option) any later version.
     9  //
    10  // the go-nebulas library is distributed in the hope that it will be useful,
    11  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    12  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13  // GNU General Public License for more details.
    14  //
    15  // You should have received a copy of the GNU General Public License
    16  // along with the go-nebulas library.  If not, see <http://www.gnu.org/licenses/>.
    17  //
    18  
    19  package cipher
    20  
    21  // Cipher encrypt cipher
    22  type Cipher struct {
    23  	encrypt Encrypt
    24  }
    25  
    26  // NewCipher returns a new cipher
    27  func NewCipher(alg uint8) *Cipher {
    28  	c := new(Cipher)
    29  	switch alg {
    30  	case 1 << 4: //keysotore.SCRYPT
    31  		c.encrypt = new(Scrypt)
    32  	default:
    33  		panic("cipher not support the algorithm")
    34  	}
    35  	return c
    36  }
    37  
    38  // Encrypt scrypt encrypt
    39  func (c *Cipher) Encrypt(data []byte, passphrase []byte) ([]byte, error) {
    40  	return c.encrypt.Encrypt(data, passphrase)
    41  }
    42  
    43  // EncryptKey encrypt key with address
    44  func (c *Cipher) EncryptKey(address string, data []byte, passphrase []byte) ([]byte, error) {
    45  	return c.encrypt.EncryptKey(address, data, passphrase)
    46  }
    47  
    48  // Decrypt decrypts data, returning the origin data
    49  func (c *Cipher) Decrypt(data []byte, passphrase []byte) ([]byte, error) {
    50  	return c.encrypt.Decrypt(data, passphrase)
    51  }
    52  
    53  // DecryptKey decrypts a key, returning the private key itself.
    54  func (c *Cipher) DecryptKey(keyjson []byte, passphrase []byte) ([]byte, error) {
    55  	return c.encrypt.DecryptKey(keyjson, passphrase)
    56  }