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Code Issues Releases Wiki Activity

Add work on OSNMA Rx

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This commit is contained in:
Carles Fernandez 2023-06-02 12:07:25 +02:00
parent 755045e668
commit 6fc334942f
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GPG Key ID: 4C583C52B0C3877D
1 changed files with 25 additions and 14 deletions
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39
src/core/libs/osnma_msg_receiver.cc
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@ -221,8 +221,24 @@ void osnma_msg_receiver::process_dsm_message(const std::vector<uint8_t>& dsm_msg
d_osnma_data.d_dsm_kroot_message.towh_k = get_towh_k(dsm_msg);
d_osnma_data.d_dsm_kroot_message.alpha = get_alpha(dsm_msg);
LOG(WARNING) << "nb_dk=" << static_cast<uint32_t>(d_osnma_data.d_dsm_kroot_message.nb_dk);
LOG(WARNING) << "pkid=" << static_cast<uint32_t>(d_osnma_data.d_dsm_kroot_message.pkid);
LOG(WARNING) << "cidkr=" << static_cast<uint32_t>(d_osnma_data.d_dsm_kroot_message.cidkr);
LOG(WARNING) << "reserved1=" << static_cast<uint32_t>(d_osnma_data.d_dsm_kroot_message.reserved1);
LOG(WARNING) << "hf=" << static_cast<uint32_t>(d_osnma_data.d_dsm_kroot_message.hf);
LOG(WARNING) << "mf=" << static_cast<uint32_t>(d_osnma_data.d_dsm_kroot_message.mf);
LOG(WARNING) << "ks=" << static_cast<uint32_t>(d_osnma_data.d_dsm_kroot_message.ks);
LOG(WARNING) << "ts=" << static_cast<uint32_t>(d_osnma_data.d_dsm_kroot_message.ts);
LOG(WARNING) << "maclt=" << static_cast<uint32_t>(d_osnma_data.d_dsm_kroot_message.maclt);
LOG(WARNING) << "reserved=" << static_cast<uint32_t>(d_osnma_data.d_dsm_kroot_message.reserved);
LOG(WARNING) << "wn_k=" << static_cast<uint32_t>(d_osnma_data.d_dsm_kroot_message.wn_k);
LOG(WARNING) << "towh_k=" << static_cast<uint32_t>(d_osnma_data.d_dsm_kroot_message.towh_k);
LOG(WARNING) << "alpha=" << d_osnma_data.d_dsm_kroot_message.alpha;
uint16_t bytes_lk = get_lk_bits(d_osnma_data.d_dsm_kroot_message.ks) / 8;
d_osnma_data.d_dsm_kroot_message.kroot = get_kroot(dsm_msg, bytes_lk);
LOG(WARNING) << "lk_bits=" << static_cast<uint32_t>(get_lk_bits(d_osnma_data.d_dsm_kroot_message.ks));
LOG(WARNING) << "lk_bytes=" << static_cast<uint32_t>(bytes_lk);
std::string hash_function = get_hash_function(d_osnma_data.d_dsm_kroot_message.hf);
@ -233,13 +249,15 @@ void osnma_msg_receiver::process_dsm_message(const std::vector<uint8_t>& dsm_msg
l_ds_bits = it4->second;
}
uint16_t l_ds_bytes = l_ds_bits / 8;
LOG(WARNING) << "ds_bits=" << static_cast<uint32_t>(l_ds_bits);
LOG(WARNING) << "ds_bytes=" << static_cast<uint32_t>(l_ds_bytes);
d_osnma_data.d_dsm_kroot_message.ds = std::vector<uint8_t>(l_ds_bytes, 0);
for (uint16_t k = 0; k < l_ds_bytes; k++)
{
d_osnma_data.d_dsm_kroot_message.ds[k] = dsm_msg[13 + bytes_lk + k];
}
uint16_t l_pdk_bytes = (l_ds_bytes - 13 - bytes_lk - l_ds_bytes);
LOG(WARNING) << "pdk_bytes=" << static_cast<uint32_t>(l_pdk_bytes);
d_osnma_data.d_dsm_kroot_message.p_dk = std::vector<uint8_t>(l_pdk_bytes, 0);
for (uint16_t k = 0; k < l_ds_bytes; k++)
{
@ -376,25 +394,18 @@ void osnma_msg_receiver::read_mack_padding()
std::vector<uint8_t> osnma_msg_receiver::computeSHA256(const std::vector<uint8_t>& input)
{
std::vector<uint8_t> output_vector{32};
uint8_t output[32];
const uint8_t* input_ptr = input.data();
size_t inputLength = input.size();
std::vector<uint8_t> output{32}; // SHA256 hash size
#if USE_OPENSSL_FALLBACK
SHA256_CTX sha256Context;
SHA256_Init(&sha256Context);
SHA256_Update(&sha256Context, input_ptr, inputLength);
SHA256_Update(&sha256Context, input.data(), input.size());
SHA256_Final(output, &sha256Context);
#else
gnutls_hash_hd_t hashHandle;
gnutls_hash_init(&hashHandle, GNUTLS_DIG_SHA256);
gnutls_hash(hashHandle, input_ptr, inputLength);
gnutls_hash_output(hashHandle, output);
gnutls_hash_deinit(hashHandle, output);
gnutls_hash(hashHandle, input.data(), input.size());
gnutls_hash_output(hashHandle, output.data());
gnutls_hash_deinit(hashHandle, output.data());
#endif
for (int i = 0; i < 32; i++)
{
output_vector[i] = output[i];
}
return output_vector;
return output;
}