key-params.cpp

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
#include "key-params.hpp"

namespace ndn {

static const uint32_t MIN_RSA_KEY_SIZE = 1024;
static const uint32_t DEFAULT_RSA_KEY_SIZE = 2048;
static const uint32_t EC_KEY_SIZES[] = {256, 384};
static const uint32_t AES_KEY_SIZES[] = {128, 192, 256};

KeyParams::~KeyParams() = default;

KeyParams::KeyParams(KeyType keyType, KeyIdType keyIdType)
  : m_keyType(keyType)
  , m_keyIdType(keyIdType)
{
  BOOST_ASSERT(keyIdType != KeyIdType::USER_SPECIFIED);
}

KeyParams::KeyParams(KeyType keyType, const name::Component& keyId)
  : m_keyType(keyType)
  , m_keyIdType(KeyIdType::USER_SPECIFIED)
  , m_keyId(keyId)
{
  BOOST_ASSERT(!keyId.empty());
}

uint32_t
RsaKeyParamsInfo::checkKeySize(uint32_t size)
{
  if (size < MIN_RSA_KEY_SIZE)
    BOOST_THROW_EXCEPTION(KeyParams::Error("Unsupported key size"));
  return size;
}

uint32_t
RsaKeyParamsInfo::getDefaultSize()
{
  return DEFAULT_RSA_KEY_SIZE;
}

uint32_t
EcKeyParamsInfo::checkKeySize(uint32_t size)
{
  for (size_t i = 0; i < (sizeof(EC_KEY_SIZES) / sizeof(EC_KEY_SIZES[0])); i++) {
    if (EC_KEY_SIZES[i] == size)
      return size;
  }
  BOOST_THROW_EXCEPTION(KeyParams::Error("Unsupported key size"));
}

uint32_t
EcKeyParamsInfo::getDefaultSize()
{
  return EC_KEY_SIZES[0];
}


uint32_t
AesKeyParamsInfo::checkKeySize(uint32_t size)
{
  for (size_t i = 0; i < (sizeof(AES_KEY_SIZES) / sizeof(AES_KEY_SIZES[0])); i++) {
    if (AES_KEY_SIZES[i] == size)
      return size;
  }
  BOOST_THROW_EXCEPTION(KeyParams::Error("Unsupported key size"));
}

uint32_t
AesKeyParamsInfo::getDefaultSize()
{
  return AES_KEY_SIZES[0];
}

} // namespace ndn