certificate read_pem_certificate(std::istream& is)
{
auto cert_der_data = read_pem_data(is, cert_begin_line, cert_end_line);
assert(cert_der_data.size());
util::buffer_view cert_buf(&cert_der_data[0], cert_der_data.size());
return certificate::parse(asn1::read_der_encoded_value(cert_buf));
}
/**
* Deserialize a Certificate message
*/
Certificate::Certificate(const std::vector<byte>& buf)
{
if(buf.size() < 3)
throw Decoding_Error("Certificate: Message malformed");
const size_t total_size = make_u32bit(0, buf[0], buf[1], buf[2]);
if(total_size != buf.size() - 3)
throw Decoding_Error("Certificate: Message malformed");
const byte* certs = buf.data() + 3;
while(size_t remaining_bytes = buf.data() + buf.size() - certs)
{
if(remaining_bytes < 3)
throw Decoding_Error("Certificate: Message malformed");
const size_t cert_size = make_u32bit(0, certs[0], certs[1], certs[2]);
if(remaining_bytes < (3 + cert_size))
throw Decoding_Error("Certificate: Message malformed");
DataSource_Memory cert_buf(&certs[3], cert_size);
m_certs.push_back(X509_Certificate(cert_buf));
certs += cert_size + 3;
}
}
