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Code Issues Releases Wiki Activity

DSM-PKR getter setter structure

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This commit is contained in:
Cesare G. Martínez 2023-12-17 21:01:01 +01:00
parent 7f3202be8e
commit 656684e396
3 changed files with 38 additions and 5 deletions
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17
src/core/libs/osnma_msg_receiver.cc
View File

@ -341,7 +341,7 @@ void osnma_msg_receiver::process_dsm_message(const std::vector<uint8_t>& dsm_msg
{
p_dk_truncated.push_back(hash[i]);
}
// check DS signature
// Check that the padding bits received match the computed values
if (d_osnma_data.d_dsm_kroot_message.p_dk == p_dk_truncated)
{
bool authenticated = d_crypto->verify_signature(message, d_osnma_data.d_dsm_kroot_message.ds);
@ -371,7 +371,7 @@ void osnma_msg_receiver::process_dsm_message(const std::vector<uint8_t>& dsm_msg
else if (d_osnma_data.d_dsm_header.dsm_id >= 12 && d_osnma_data.d_dsm_header.dsm_id < 16)
{
LOG(WARNING) << "OSNMA: DSM-PKR message received.";
// DSM-PKR message
// Save DSM-PKR message
d_osnma_data.d_dsm_pkr_message.nb_dp = d_dsm_reader->get_number_blocks_index(dsm_msg[0]);
d_osnma_data.d_dsm_pkr_message.mid = d_dsm_reader->get_mid(dsm_msg);
for (int k = 0; k > 128; k++)
@ -424,7 +424,17 @@ void osnma_msg_receiver::process_dsm_message(const std::vector<uint8_t>& dsm_msg
<< ", TOW=" << static_cast<uint32_t>(d_osnma_data.d_dsm_kroot_message.towh_k) * 3600
<< " received" << std::endl;
// C: NPK verification against Merkle tree root.
d_public_key_verified = verify_dsm_pkr(d_osnma_data.d_dsm_pkr_message);
if (!d_public_key_verified)
{
bool verification = verify_dsm_pkr(d_osnma_data.d_dsm_pkr_message);
if (verification)
{
d_public_key_verified = true;
d_crypto->set_public_key(d_osnma_data.d_dsm_pkr_message.npk);
}
}
}
}
else
@ -872,7 +882,6 @@ void osnma_msg_receiver::process_mack_message(const std::shared_ptr<OSNMA_msg>&
bool osnma_msg_receiver::verify_dsm_pkr(DSM_PKR_message message)
{
// TODO create leafe base message m_i
// TODO create function for recursively apply hash
// build base leaf m_i

23
src/core/system_parameters/gnss_crypto.cc
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@ -598,3 +598,26 @@ std::vector<uint8_t> Gnss_Crypto::getMerkleRoot(const std::vector<std::vector<ui
}
return new_merkle[0];
}
void Gnss_Crypto::set_public_key(const std::vector<uint8_t>& publicKey)
{
#if USE_OPENSSL_FALLBACK
// TODO - convert to OSSL PubKey format
#else
// GNU-TLS
// TODO - convert to gnutls_pubkey_st
#endif
}
std::vector<uint8_t> Gnss_Crypto::get_public_key()
{
#if USE_OPENSSL_FALLBACK
// TODO
#else
// GNU-TLS
// TODO
#endif
return {};
}

3
src/core/system_parameters/gnss_crypto.h
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@ -55,7 +55,8 @@ public:
return d_x_4_0;
}
// void set_public_key(const std::vector<uint8_t>& publickey);
void set_public_key(const std::vector<uint8_t>& publickey);
static std::vector<uint8_t> get_public_key();
private:
#if USE_OPENSSL_FALLBACK