key-params.cpp
Go to the documentation of this file.
1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2013-2017 Regents of the University of California.
4  *
5  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
6  *
7  * ndn-cxx library is free software: you can redistribute it and/or modify it under the
8  * terms of the GNU Lesser General Public License as published by the Free Software
9  * Foundation, either version 3 of the License, or (at your option) any later version.
10  *
11  * ndn-cxx library is distributed in the hope that it will be useful, but WITHOUT ANY
12  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
13  * PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
14  *
15  * You should have received copies of the GNU General Public License and GNU Lesser
16  * General Public License along with ndn-cxx, e.g., in COPYING.md file. If not, see
17  * <http://www.gnu.org/licenses/>.
18  *
19  * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
20  */
21 
22 #include "key-params.hpp"
23 
24 namespace ndn {
25 
26 static const uint32_t MIN_RSA_KEY_SIZE = 1024;
27 static const uint32_t DEFAULT_RSA_KEY_SIZE = 2048;
28 static const uint32_t EC_KEY_SIZES[] = {256, 384};
29 static const uint32_t AES_KEY_SIZES[] = {128, 192, 256};
30 
32  : m_keyType(keyType)
33  , m_keyIdType(keyIdType)
34 {
35  BOOST_ASSERT(keyIdType != KeyIdType::USER_SPECIFIED);
36 }
37 
39  : m_keyType(keyType)
40  , m_keyIdType(KeyIdType::USER_SPECIFIED)
41  , m_keyId(keyId)
42 {
43  BOOST_ASSERT(!keyId.empty());
44 }
45 
46 KeyParams::~KeyParams() = default;
47 
48 namespace detail {
49 
50 uint32_t
51 RsaKeyParamsInfo::checkKeySize(uint32_t size)
52 {
53  if (size < MIN_RSA_KEY_SIZE)
54  BOOST_THROW_EXCEPTION(KeyParams::Error("Unsupported RSA key size"));
55  return size;
56 }
57 
58 uint32_t
59 RsaKeyParamsInfo::getDefaultSize()
60 {
61  return DEFAULT_RSA_KEY_SIZE;
62 }
63 
64 uint32_t
65 EcKeyParamsInfo::checkKeySize(uint32_t size)
66 {
67  for (size_t i = 0; i < (sizeof(EC_KEY_SIZES) / sizeof(EC_KEY_SIZES[0])); i++) {
68  if (EC_KEY_SIZES[i] == size)
69  return size;
70  }
71  BOOST_THROW_EXCEPTION(KeyParams::Error("Unsupported EC key size"));
72 }
73 
74 uint32_t
75 EcKeyParamsInfo::getDefaultSize()
76 {
77  return EC_KEY_SIZES[0];
78 }
79 
80 uint32_t
81 AesKeyParamsInfo::checkKeySize(uint32_t size)
82 {
83  for (size_t i = 0; i < (sizeof(AES_KEY_SIZES) / sizeof(AES_KEY_SIZES[0])); i++) {
84  if (AES_KEY_SIZES[i] == size)
85  return size;
86  }
87  BOOST_THROW_EXCEPTION(KeyParams::Error("Unsupported AES key size"));
88 }
89 
90 uint32_t
91 AesKeyParamsInfo::getDefaultSize()
92 {
93  return AES_KEY_SIZES[0];
94 }
95 
96 } // namespace detail
97 } // namespace ndn
Copyright (c) 2013-2017 Regents of the University of California.
Definition: common.hpp:66
static const uint32_t DEFAULT_RSA_KEY_SIZE
Definition: key-params.cpp:27
KeyIdType
The type of KeyId component in a key name.
virtual ~KeyParams()
static const uint32_t AES_KEY_SIZES[]
Definition: key-params.cpp:29
KeyType
The type of a cryptographic key.
static const uint32_t MIN_RSA_KEY_SIZE
Definition: key-params.cpp:26
KeyParams(KeyType keyType, KeyIdType keyIdType)
Create a key generation parameter.
Definition: key-params.cpp:31
Component holds a read-only name component value.
User-specified key ID.
static const uint32_t EC_KEY_SIZES[]
Definition: key-params.cpp:28