本文整理汇总了C++中Blob::cend方法的典型用法代码示例。如果您正苦于以下问题：C++ Blob::cend方法的具体用法？C++ Blob::cend怎么用？C++ Blob::cend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Blob的用法示例。
在下文中一共展示了Blob::cend方法的1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: CryptoException
Blob
PrivateKey::decrypt(const Blob& cipher) const
{
if (!key)
throw CryptoException("Can't decrypt data without private key !");
unsigned key_len = 0;
int err = gnutls_privkey_get_pk_algorithm(key, &key_len);
if (err < 0)
throw CryptoException("Can't read public key length !");
if (err != GNUTLS_PK_RSA)
throw CryptoException("Must be an RSA key");
unsigned cypher_block_sz = key_len / 8;
if (cipher.size() % cypher_block_sz)
throw CryptoException("Unexpected cipher length");
Blob ret;
for (auto cb = cipher.cbegin(), ce = cipher.cend(); cb < ce; cb += cypher_block_sz) {
const gnutls_datum_t dat {(uint8_t*)(&(*cb)), cypher_block_sz};
gnutls_datum_t out;
int err = gnutls_privkey_decrypt_data(key, 0, &dat, &out);
if (err != GNUTLS_E_SUCCESS)
throw DhtException(std::string("Can't decrypt data: ") + gnutls_strerror(err));
ret.insert(ret.end(), out.data, out.data+out.size);
gnutls_free(out.data);
}
return ret;
}