NS-3 based Named Data Networking (NDN) simulator
ndnSIM 2.5: NDN, CCN, CCNx, content centric networks
API Documentation
openssl-helper.cpp
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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).
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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.
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13  * PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
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15  * You should have received copies of the GNU General Public License and GNU Lesser
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17  * <http://www.gnu.org/licenses/>.
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19  * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
20  */
21 
22 #include "openssl-helper.hpp"
23 
24 namespace ndn {
25 namespace security {
26 namespace detail {
27 
28 const EVP_MD*
30 {
31  switch (algo) {
33  return EVP_sha224();
35  return EVP_sha256();
37  return EVP_sha384();
39  return EVP_sha512();
40 #if OPENSSL_VERSION_NUMBER >= 0x1010000fL && !defined(OPENSSL_NO_BLAKE2)
42  return EVP_blake2b512();
44  return EVP_blake2s256();
45 #endif
46  default:
47  return nullptr;
48  }
49 }
50 
51 int
52 getEvpPkeyType(EVP_PKEY* key)
53 {
54  return
55 #if OPENSSL_VERSION_NUMBER < 0x1010000fL
56  EVP_PKEY_type(key->type);
57 #else
58  EVP_PKEY_base_id(key);
59 #endif
60 }
61 
63 #if OPENSSL_VERSION_NUMBER < 0x1010000fL
64  : m_ctx(EVP_MD_CTX_create())
65 #else
66  : m_ctx(EVP_MD_CTX_new())
67 #endif
68 {
69  if (m_ctx == nullptr)
70  BOOST_THROW_EXCEPTION(std::runtime_error("EVP_MD_CTX creation failed"));
71 }
72 
74 {
75 #if OPENSSL_VERSION_NUMBER < 0x1010000fL
76  EVP_MD_CTX_destroy(m_ctx);
77 #else
78  EVP_MD_CTX_free(m_ctx);
79 #endif
80 }
81 
82 EvpPkeyCtx::EvpPkeyCtx(EVP_PKEY* key)
83  : m_ctx(EVP_PKEY_CTX_new(key, nullptr))
84 {
85  if (m_ctx == nullptr)
86  BOOST_THROW_EXCEPTION(std::runtime_error("EVP_PKEY_CTX creation failed"));
87 }
88 
90  : m_ctx(EVP_PKEY_CTX_new_id(id, nullptr))
91 {
92  if (m_ctx == nullptr)
93  BOOST_THROW_EXCEPTION(std::runtime_error("EVP_PKEY_CTX creation failed"));
94 }
95 
97 {
98  EVP_PKEY_CTX_free(m_ctx);
99 }
100 
102  : m_bio(BIO_new(method))
103 {
104  if (m_bio == nullptr)
105  BOOST_THROW_EXCEPTION(std::runtime_error("BIO creation failed"));
106 }
107 
109 {
110  BIO_free_all(m_bio);
111 }
112 
113 bool
114 Bio::read(uint8_t* buf, size_t buflen) const noexcept
115 {
116  BOOST_ASSERT(buflen <= std::numeric_limits<int>::max());
117  int n = BIO_read(m_bio, buf, static_cast<int>(buflen));
118  return n >= 0 && static_cast<size_t>(n) == buflen;
119 }
120 
121 bool
122 Bio::write(const uint8_t* buf, size_t buflen) noexcept
123 {
124  BOOST_ASSERT(buflen <= std::numeric_limits<int>::max());
125  int n = BIO_write(m_bio, buf, static_cast<int>(buflen));
126  return n >= 0 && static_cast<size_t>(n) == buflen;
127 }
128 
129 } // namespace detail
130 } // namespace security
131 } // namespace ndn
Copyright (c) 2011-2015 Regents of the University of California.
int getEvpPkeyType(EVP_PKEY *key)
bool read(uint8_t *buf, size_t buflen) const noexcept
const EVP_MD * digestAlgorithmToEvpMd(DigestAlgorithm algo)
Use the SHA256 hash of the public key as the key id.
bool write(const uint8_t *buf, size_t buflen) noexcept