1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CRYPTO_OPENPGP_SYMMETRIC_ENCRYPTION_H_ 6 #define CRYPTO_OPENPGP_SYMMETRIC_ENCRYPTION_H_ 7 8 #include <string> 9 10 #include "base/strings/string_piece.h" 11 #include "crypto/crypto_export.h" 12 13 namespace crypto { 14 15 // OpenPGPSymmetricEncrytion implements enough of RFC 4880 to read and write 16 // uncompressed, symmetrically encrypted data. You can create ciphertext 17 // compatable with this code from the command line with: 18 // gpg --compress-algo=NONE --cipher-algo=AES -c 19 // 20 // Likewise, the output of this can be decrypted on the command line with: 21 // gpg < input 22 class CRYPTO_EXPORT OpenPGPSymmetricEncrytion { 23 public: 24 enum Result { 25 OK, 26 UNKNOWN_CIPHER, // you forgot to pass --cipher-algo=AES to gpg 27 UNKNOWN_HASH, 28 NOT_SYMMETRICALLY_ENCRYPTED, // it's OpenPGP data, but not correct form 29 COMPRESSED, // you forgot to pass --compress-algo=NONE 30 PARSE_ERROR, // it's not OpenPGP data. 31 INTERNAL_ERROR, 32 }; 33 34 static Result Decrypt(base::StringPiece encrypted, 35 base::StringPiece passphrase, 36 std::string *out); 37 38 static std::string Encrypt(base::StringPiece plaintext, 39 base::StringPiece passphrase); 40 }; 41 42 } // namespace crypto 43 44 #endif // CRYPTO_OPENPGP_SYMMETRIC_ENCRYPTION_H_ 45 46
