15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef CRYPTO_OPENPGP_SYMMETRIC_ENCRYPTION_H_ 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define CRYPTO_OPENPGP_SYMMETRIC_ENCRYPTION_H_ 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <string> 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#include "base/strings/string_piece.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "crypto/crypto_export.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace crypto { 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// OpenPGPSymmetricEncrytion implements enough of RFC 4880 to read and write 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// uncompressed, symmetrically encrypted data. You can create ciphertext 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// compatable with this code from the command line with: 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// gpg --compress-algo=NONE --cipher-algo=AES -c 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Likewise, the output of this can be decrypted on the command line with: 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// gpg < input 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class CRYPTO_EXPORT OpenPGPSymmetricEncrytion { 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) enum Result { 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OK, 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) UNKNOWN_CIPHER, // you forgot to pass --cipher-algo=AES to gpg 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) UNKNOWN_HASH, 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NOT_SYMMETRICALLY_ENCRYPTED, // it's OpenPGP data, but not correct form 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) COMPRESSED, // you forgot to pass --compress-algo=NONE 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PARSE_ERROR, // it's not OpenPGP data. 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) INTERNAL_ERROR, 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static Result Decrypt(base::StringPiece encrypted, 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::StringPiece passphrase, 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string *out); 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static std::string Encrypt(base::StringPiece plaintext, 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::StringPiece passphrase); 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace crypto 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // CRYPTO_OPENPGP_SYMMETRIC_ENCRYPTION_H_ 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 46