本文整理汇总了C++中SymmetricKey::size方法的典型用法代码示例。如果您正苦于以下问题：C++ SymmetricKey::size方法的具体用法？C++ SymmetricKey::size怎么用？C++ SymmetricKey::size使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类SymmetricKey的用法示例。
在下文中一共展示了SymmetricKey::size方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: aes
secure_vector<uint8_t> rfc3394_keywrap(const secure_vector<uint8_t>& key,
const SymmetricKey& kek)
{
BOTAN_ARG_CHECK(kek.size() == 16 || kek.size() == 24 || kek.size() == 32,
"Invalid KEK length for NIST key wrap");
const std::string cipher_name = "AES-" + std::to_string(8*kek.size());
std::unique_ptr<BlockCipher> aes(BlockCipher::create_or_throw(cipher_name));
aes->set_key(kek);
std::vector<uint8_t> wrapped = nist_key_wrap(key.data(), key.size(), *aes);
return secure_vector<uint8_t>(wrapped.begin(), wrapped.end());
}示例2: nist_key_unwrap
secure_vector<uint8_t> rfc3394_keyunwrap(const secure_vector<uint8_t>& key,
const SymmetricKey& kek)
{
BOTAN_ARG_CHECK(kek.size() == 16 || kek.size() == 24 || kek.size() == 32,
"Invalid KEK length for NIST key wrap");
BOTAN_ARG_CHECK(key.size() >= 16 && key.size() % 8 == 0,
"Bad input key size for NIST key unwrap");
const std::string cipher_name = "AES-" + std::to_string(8*kek.size());
std::unique_ptr<BlockCipher> aes(BlockCipher::create_or_throw(cipher_name));
aes->set_key(kek);
return nist_key_unwrap(key.data(), key.size(), *aes);
}示例3: Invalid_Argument
secure_vector<uint8_t> rfc3394_keyunwrap(const secure_vector<uint8_t>& key,
const SymmetricKey& kek)
{
if(key.size() < 16 || key.size() % 8 != 0)
throw Invalid_Argument("Bad input key size for NIST key unwrap");
if(kek.size() != 16 && kek.size() != 24 && kek.size() != 32)
throw Invalid_Argument("Bad KEK length " + std::to_string(kek.size()) + " for NIST key unwrap");
const std::string cipher_name = "AES-" + std::to_string(8*kek.size());
std::unique_ptr<BlockCipher> aes(BlockCipher::create_or_throw(cipher_name));
aes->set_key(kek);
const size_t n = (key.size() - 8) / 8;
secure_vector<uint8_t> R(n * 8);
secure_vector<uint8_t> A(16);
for(size_t i = 0; i != 8; ++i)
A[i] = key[i];
copy_mem(R.data(), &key[8], key.size() - 8);
for(size_t j = 0; j <= 5; ++j)
{
for(size_t i = n; i != 0; --i)
{
const uint32_t t = static_cast<uint32_t>((5 - j) * n + i);
uint8_t t_buf[4] = { 0 };
store_be(t, t_buf);
xor_buf(&A[4], t_buf, 4);
copy_mem(&A[8], &R[8*(i-1)], 8);
aes->decrypt(A.data());
copy_mem(&R[8*(i-1)], &A[8], 8);
}
}
if(load_be<uint64_t>(A.data(), 0) != 0xA6A6A6A6A6A6A6A6)
throw Integrity_Failure("NIST key unwrap failed");
return R;
}