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Merged
merged 7 commits into from
Sep 13, 2024
Merged

292 tm process aos process oob read and sa not operational #306

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436f6c4
[nasa/cryptolib#292] Added SA_NOT_OPERATIONAL check in TM_PROCESS
Donnie-Ice Sep 9, 2024
59fd9fa
[nasa/cryptolib#292] Removed commented code
Donnie-Ice Sep 9, 2024
8a50972
[nasa/cryptolib#292] Added SA_NOT_OPERATIONAL check in AOS_PROCESS
Donnie-Ice Sep 9, 2024
6ca32bd
[nasa/cryptolib#292] Moved all references to SA inside bounds-checking
Donnie-Ice Sep 12, 2024
2628125
[nasa/cryptolib#292] Moved all prints inside #ifdef's
Donnie-Ice Sep 12, 2024
e456750
[nasa/cryptolib#292] Broke down sa.lpid bit math
Donnie-Ice Sep 12, 2024
17e9ed1
[nasa/cryptolib#292] Broke down sa.lpid bit math
Donnie-Ice Sep 12, 2024
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7 changes: 7 additions & 0 deletions src/core/crypto_aos.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1249,6 +1249,13 @@ int32_t Crypto_AOS_ProcessSecurity(uint8_t* p_ingest, uint16_t len_ingest, uint8

}

// check sa state before decrypting
if (sa_ptr->sa_state != SA_OPERATIONAL)
{
printf(KRED "Error: SA Not Operational \n" RESET);
return CRYPTO_LIB_ERR_SA_NOT_OPERATIONAL;
}

if(sa_service_type != SA_PLAINTEXT && ecs_is_aead_algorithm == CRYPTO_TRUE)
{

Expand Down
6 changes: 6 additions & 0 deletions src/core/crypto_tm.c
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Expand Up @@ -1787,6 +1787,12 @@ int32_t Crypto_TM_ProcessSecurity(uint8_t* p_ingest, uint16_t len_ingest, uint8_
// Parse MAC, prepare AAD
Crypto_TM_Parse_Mac_Prep_AAD(sa_service_type, p_ingest, mac_loc, sa_ptr, &aad_len, byte_idx, aad);

if (sa_ptr->sa_state != SA_OPERATIONAL)
{
printf(KRED "Error: SA Not Operational \n" RESET);
return CRYPTO_LIB_ERR_SA_NOT_OPERATIONAL;
}

status = Crypto_TM_Do_Decrypt(sa_service_type, sa_ptr, ecs_is_aead_algorithm, byte_idx, p_new_dec_frame, pdu_len, p_ingest, ekp, akp, iv_loc, mac_loc, aad_len, aad, pp_processed_frame, p_decrypted_length);
}

Expand Down
138 changes: 73 additions & 65 deletions src/sa/internal/sa_interface_inmemory.template.c
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Original file line number Diff line number Diff line change
Expand Up @@ -980,13 +980,13 @@ static int32_t sa_start(TC_t* tc_frame)
// Read ingest
spi = ((uint8_t)sdls_frame.pdu.data[0] << 8) | (uint8_t)sdls_frame.pdu.data[1];

// Overwrite last PID
sa[spi].lpid =
(sdls_frame.pdu.type << 7) | (sdls_frame.pdu.uf << 6) | (sdls_frame.pdu.sg << 4) | sdls_frame.pdu.pid;

// Check SPI exists and in 'Keyed' state
if (spi < NUM_SA)
{
// Overwrite last PID
sa[spi].lpid =
(sdls_frame.pdu.type << 7) | (sdls_frame.pdu.uf << 6) | (sdls_frame.pdu.sg << 4) | sdls_frame.pdu.pid;

if (sa[spi].sa_state == SA_KEYED)
{
count = 2;
Expand Down Expand Up @@ -1109,13 +1109,13 @@ static int32_t sa_stop(void)
spi = ((uint8_t)sdls_frame.pdu.data[0] << 8) | (uint8_t)sdls_frame.pdu.data[1];
printf("spi = %d \n", spi);

// Overwrite last PID
sa[spi].lpid =
(sdls_frame.pdu.type << 7) | (sdls_frame.pdu.uf << 6) | (sdls_frame.pdu.sg << 4) | sdls_frame.pdu.pid;

// Check SPI exists and in 'Active' state
if (spi < NUM_SA)
{
// Overwrite last PID
sa[spi].lpid =
(sdls_frame.pdu.type << 7) | (sdls_frame.pdu.uf << 6) | (sdls_frame.pdu.sg << 4) | sdls_frame.pdu.pid;

if (sa[spi].sa_state == SA_OPERATIONAL)
{
// Remove all GVC/GMAP IDs
Expand Down Expand Up @@ -1170,13 +1170,13 @@ static int32_t sa_rekey(void)
spi = ((uint8_t)sdls_frame.pdu.data[count] << 8) | (uint8_t)sdls_frame.pdu.data[count + 1];
count = count + 2;

// Overwrite last PID
sa[spi].lpid =
(sdls_frame.pdu.type << 7) | (sdls_frame.pdu.uf << 6) | (sdls_frame.pdu.sg << 4) | sdls_frame.pdu.pid;

// Check SPI exists and in 'Unkeyed' state
if (spi < NUM_SA)
{
// Overwrite last PID
sa[spi].lpid =
(sdls_frame.pdu.type << 7) | (sdls_frame.pdu.uf << 6) | (sdls_frame.pdu.sg << 4) | sdls_frame.pdu.pid;

if (sa[spi].sa_state == SA_UNKEYED)
{ // Encryption Key
sa[spi].ekid = ((uint8_t)sdls_frame.pdu.data[count] << 8) | (uint8_t)sdls_frame.pdu.data[count + 1];
Expand Down Expand Up @@ -1248,13 +1248,13 @@ static int32_t sa_expire(void)
spi = ((uint8_t)sdls_frame.pdu.data[0] << 8) | (uint8_t)sdls_frame.pdu.data[1];
printf("spi = %d \n", spi);

// Overwrite last PID
sa[spi].lpid =
(sdls_frame.pdu.type << 7) | (sdls_frame.pdu.uf << 6) | (sdls_frame.pdu.sg << 4) | sdls_frame.pdu.pid;

// Check SPI exists and in 'Keyed' state
if (spi < NUM_SA)
{
// Overwrite last PID
sa[spi].lpid =
(sdls_frame.pdu.type << 7) | (sdls_frame.pdu.uf << 6) | (sdls_frame.pdu.sg << 4) | sdls_frame.pdu.pid;

if (sa[spi].sa_state == SA_KEYED)
{ // Change to 'Unkeyed' state
sa[spi].sa_state = SA_UNKEYED;
Expand Down Expand Up @@ -1290,57 +1290,65 @@ static int32_t sa_create(void)
spi = ((uint8_t)sdls_frame.pdu.data[0] << 8) | (uint8_t)sdls_frame.pdu.data[1];
printf("spi = %d \n", spi);

// Overwrite last PID
sa[spi].lpid =
(sdls_frame.pdu.type << 7) | (sdls_frame.pdu.uf << 6) | (sdls_frame.pdu.sg << 4) | sdls_frame.pdu.pid;

// Write SA Configuration
sa[spi].est = ((uint8_t)sdls_frame.pdu.data[2] & 0x80) >> 7;
sa[spi].ast = ((uint8_t)sdls_frame.pdu.data[2] & 0x40) >> 6;
sa[spi].shivf_len = ((uint8_t)sdls_frame.pdu.data[2] & 0x3F);
sa[spi].shsnf_len = ((uint8_t)sdls_frame.pdu.data[3] & 0xFC) >> 2;
sa[spi].shplf_len = ((uint8_t)sdls_frame.pdu.data[3] & 0x03);
sa[spi].stmacf_len = ((uint8_t)sdls_frame.pdu.data[4]);
sa[spi].ecs_len = ((uint8_t)sdls_frame.pdu.data[5]);
for (x = 0; x < sa[spi].ecs_len; x++)
{
sa[spi].ecs = ((uint8_t)sdls_frame.pdu.data[count++]);
}
sa[spi].shivf_len = ((uint8_t)sdls_frame.pdu.data[count++]);
for (x = 0; x < sa[spi].shivf_len; x++)
{
sa[spi].iv[x] = ((uint8_t)sdls_frame.pdu.data[count++]);
}
sa[spi].acs_len = ((uint8_t)sdls_frame.pdu.data[count++]);
for (x = 0; x < sa[spi].acs_len; x++)
{
sa[spi].acs = ((uint8_t)sdls_frame.pdu.data[count++]);
}
sa[spi].abm_len = (uint8_t)((sdls_frame.pdu.data[count] << 8) | (sdls_frame.pdu.data[count + 1]));
count = count + 2;
for (x = 0; x < sa[spi].abm_len; x++)
{
sa[spi].abm[x] = ((uint8_t)sdls_frame.pdu.data[count++]);
}
sa[spi].arsn_len = ((uint8_t)sdls_frame.pdu.data[count++]);
for (x = 0; x < sa[spi].arsn_len; x++)
{
*(sa[spi].arsn + x) = ((uint8_t)sdls_frame.pdu.data[count++]);
}
sa[spi].arsnw_len = ((uint8_t)sdls_frame.pdu.data[count++]);
for (x = 0; x < sa[spi].arsnw_len; x++)
// Check if valid SPI
if (spi < NUM_SA)
{
sa[spi].arsnw = sa[spi].arsnw | (((uint8_t)sdls_frame.pdu.data[count++]) << (sa[spi].arsnw_len - x));
}
// Overwrite last PID
sa[spi].lpid =
(sdls_frame.pdu.type << 7) | (sdls_frame.pdu.uf << 6) | (sdls_frame.pdu.sg << 4) | sdls_frame.pdu.pid;

// Write SA Configuration
sa[spi].est = ((uint8_t)sdls_frame.pdu.data[2] & 0x80) >> 7;
sa[spi].ast = ((uint8_t)sdls_frame.pdu.data[2] & 0x40) >> 6;
sa[spi].shivf_len = ((uint8_t)sdls_frame.pdu.data[2] & 0x3F);
sa[spi].shsnf_len = ((uint8_t)sdls_frame.pdu.data[3] & 0xFC) >> 2;
sa[spi].shplf_len = ((uint8_t)sdls_frame.pdu.data[3] & 0x03);
sa[spi].stmacf_len = ((uint8_t)sdls_frame.pdu.data[4]);
sa[spi].ecs_len = ((uint8_t)sdls_frame.pdu.data[5]);
for (x = 0; x < sa[spi].ecs_len; x++)
{
sa[spi].ecs = ((uint8_t)sdls_frame.pdu.data[count++]);
}
sa[spi].shivf_len = ((uint8_t)sdls_frame.pdu.data[count++]);
for (x = 0; x < sa[spi].shivf_len; x++)
{
sa[spi].iv[x] = ((uint8_t)sdls_frame.pdu.data[count++]);
}
sa[spi].acs_len = ((uint8_t)sdls_frame.pdu.data[count++]);
for (x = 0; x < sa[spi].acs_len; x++)
{
sa[spi].acs = ((uint8_t)sdls_frame.pdu.data[count++]);
}
sa[spi].abm_len = (uint8_t)((sdls_frame.pdu.data[count] << 8) | (sdls_frame.pdu.data[count + 1]));
count = count + 2;
for (x = 0; x < sa[spi].abm_len; x++)
{
sa[spi].abm[x] = ((uint8_t)sdls_frame.pdu.data[count++]);
}
sa[spi].arsn_len = ((uint8_t)sdls_frame.pdu.data[count++]);
for (x = 0; x < sa[spi].arsn_len; x++)
{
*(sa[spi].arsn + x) = ((uint8_t)sdls_frame.pdu.data[count++]);
}
sa[spi].arsnw_len = ((uint8_t)sdls_frame.pdu.data[count++]);
for (x = 0; x < sa[spi].arsnw_len; x++)
{
sa[spi].arsnw = sa[spi].arsnw | (((uint8_t)sdls_frame.pdu.data[count++]) << (sa[spi].arsnw_len - x));
}

// TODO: Checks for valid data
// TODO: Checks for valid data

// Set state to unkeyed
sa[spi].sa_state = SA_UNKEYED;
// Set state to unkeyed
sa[spi].sa_state = SA_UNKEYED;

#ifdef PDU_DEBUG
Crypto_saPrint(&sa[spi]);
Crypto_saPrint(&sa[spi]);
#endif
}
else
{
printf(KRED "ERROR: SPI %d cannot be created.\n" RESET, spi);
}

return CRYPTO_LIB_SUCCESS;
}
Expand All @@ -1358,13 +1366,13 @@ static int32_t sa_delete(void)
spi = ((uint8_t)sdls_frame.pdu.data[0] << 8) | (uint8_t)sdls_frame.pdu.data[1];
printf("spi = %d \n", spi);

// Overwrite last PID
sa[spi].lpid =
(sdls_frame.pdu.type << 7) | (sdls_frame.pdu.uf << 6) | (sdls_frame.pdu.sg << 4) | sdls_frame.pdu.pid;

// Check SPI exists and in 'Unkeyed' state
if (spi < NUM_SA)
{
// Overwrite last PID
sa[spi].lpid =
(sdls_frame.pdu.type << 7) | (sdls_frame.pdu.uf << 6) | (sdls_frame.pdu.sg << 4) | sdls_frame.pdu.pid;

if (sa[spi].sa_state == SA_UNKEYED)
{ // Change to 'None' state
sa[spi].sa_state = SA_NONE;
Expand Down
53 changes: 53 additions & 0 deletions test/unit/ut_aos_process.c
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Expand Up @@ -144,6 +144,13 @@ UTEST(AOS_PROCESS, HAPPY_PATH_CLEAR_FECF)
int truth_aos_len = 0;
hex_conversion(truth_aos_h, &truth_aos_b, &truth_aos_len);

SecurityAssociation_t *sa_ptr = NULL;
SaInterface sa_if = get_sa_interface_inmemory();
sa_if->sa_get_from_spi(10, &sa_ptr); //Disable SPI 10
sa_ptr->sa_state = SA_KEYED;
sa_if->sa_get_from_spi(9, &sa_ptr); // Enable and setup 9
sa_ptr->sa_state = SA_OPERATIONAL;

status = Crypto_AOS_ProcessSecurity((uint8_t* )framed_aos_b, framed_aos_len, &ptr_processed_frame, &processed_aos_len);
ASSERT_EQ(CRYPTO_LIB_SUCCESS, status);
// Determine managed parameters by GVCID, which nominally happens in TO
Expand Down Expand Up @@ -253,6 +260,13 @@ UTEST(AOS_PROCESS, INSERT_ZONE_PRESENT_PLAINTEXT)
int truth_aos_len = 0;
hex_conversion(truth_aos_h, &truth_aos_b, &truth_aos_len);

SecurityAssociation_t *sa_ptr = NULL;
SaInterface sa_if = get_sa_interface_inmemory();
sa_if->sa_get_from_spi(10, &sa_ptr); //Disable SPI 10
sa_ptr->sa_state = SA_KEYED;
sa_if->sa_get_from_spi(9, &sa_ptr); // Enable and setup 9
sa_ptr->sa_state = SA_OPERATIONAL;

status = Crypto_AOS_ProcessSecurity((uint8_t* )framed_aos_b, framed_aos_len, &ptr_processed_frame, &processed_aos_len);
ASSERT_EQ(CRYPTO_LIB_SUCCESS, status);
// Determine managed parameters by GVCID, which nominally happens in TO
Expand Down Expand Up @@ -982,4 +996,43 @@ UTEST(AOS_PROCESS, AOS_SA_SEGFAULT_TEST)
free(ptr_processed_frame);
}

UTEST(AOS_PROCESS, AOS_SA_NOT_OPERATIONAL)
{
// Local Variables
int32_t status = CRYPTO_LIB_SUCCESS;
uint8_t* ptr_processed_frame = NULL;
uint16_t processed_aos_len;

// Configure Parameters
Crypto_Config_CryptoLib(KEY_TYPE_INTERNAL, MC_TYPE_INTERNAL, SA_TYPE_INMEMORY, CRYPTOGRAPHY_TYPE_LIBGCRYPT,
IV_INTERNAL, CRYPTO_AOS_CREATE_FECF_TRUE, TC_PROCESS_SDLS_PDUS_TRUE, TC_HAS_PUS_HDR,
TC_IGNORE_SA_STATE_FALSE, TC_IGNORE_ANTI_REPLAY_FALSE, TC_UNIQUE_SA_PER_MAP_ID_FALSE,
AOS_CHECK_FECF_FALSE, 0x3F, SA_INCREMENT_NONTRANSMITTED_IV_TRUE);
// AOS Tests
//Crypto_Config_Add_Gvcid_Managed_Parameter(1, 0x002c, 0, AOS_HAS_FECF, AOS_SEGMENT_HDRS_NA, AOS_NO_OCF, 1786, AOS_NO_FHEC, AOS_HAS_IZ, 10);
GvcidManagedParameters_t AOS_UT_Managed_Parameters = {1, 0x002c, 0, AOS_HAS_FECF, AOS_NO_FHEC, AOS_HAS_IZ, 0, AOS_SEGMENT_HDRS_NA, 1786, AOS_NO_OCF, 1};
Crypto_Config_Add_Gvcid_Managed_Parameters(AOS_UT_Managed_Parameters);
status = Crypto_Init();

// Test frame setup
char* framed_aos_h = "42C00000000000050000000000000000FFFF";
char* framed_aos_b = NULL;
int framed_aos_len = 0;
hex_conversion(framed_aos_h, &framed_aos_b, &framed_aos_len);

SecurityAssociation_t *sa_ptr = NULL;
SaInterface sa_if = get_sa_interface_inmemory();
sa_if->sa_get_from_spi(10, &sa_ptr); //Disable SPI 10
sa_ptr->sa_state = SA_KEYED;
sa_if->sa_get_from_spi(5, &sa_ptr); // Enable and setup 5
sa_ptr->sa_state = SA_NONE;

status = Crypto_AOS_ProcessSecurity((uint8_t* )framed_aos_b, framed_aos_len, &ptr_processed_frame, &processed_aos_len);
ASSERT_EQ(CRYPTO_LIB_ERR_SA_NOT_OPERATIONAL, status);

Crypto_Shutdown();
free(framed_aos_b);
free(ptr_processed_frame);
}

UTEST_MAIN();
52 changes: 48 additions & 4 deletions test/unit/ut_tm_process.c
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Original file line number Diff line number Diff line change
Expand Up @@ -149,6 +149,14 @@ UTEST(TM_PROCESS_SECURITY, HAPPY_PATH_CLEAR_FECF)
int truth_tm_len = 0;
hex_conversion(truth_tm_h, &truth_tm_b, &truth_tm_len);

SecurityAssociation_t* sa_ptr;
// Deactivate SA 1
sa_if->sa_get_from_spi(1, &sa_ptr);
sa_ptr->sa_state = SA_NONE;
// Activate SA 5
sa_if->sa_get_from_spi(5, &sa_ptr);
sa_ptr->sa_state = SA_OPERATIONAL;

status = Crypto_TM_ProcessSecurity((uint8_t* )framed_tm_b, framed_tm_len, &ptr_processed_frame, &processed_tm_len);
ASSERT_EQ(CRYPTO_LIB_SUCCESS, status);
// Determine managed parameters by GVCID, which nominally happens in TO
Expand Down Expand Up @@ -1131,6 +1139,7 @@ UTEST(TM_PROCESS_ENC_VAL, AEAD_AES_GCM_BITMASK_1)

printf("\n\n");

Crypto_Shutdown();
free(truth_tm_b);
free(framed_tm_b);
free(iv_b);
Expand All @@ -1148,15 +1157,15 @@ UTEST(TM_PROCESS, TM_SA_SEGFAULT_TEST)
IV_INTERNAL, CRYPTO_TM_CREATE_FECF_TRUE, TC_PROCESS_SDLS_PDUS_TRUE, TC_HAS_PUS_HDR,
TC_IGNORE_SA_STATE_FALSE, TC_IGNORE_ANTI_REPLAY_FALSE, TC_UNIQUE_SA_PER_MAP_ID_FALSE,
TC_CHECK_FECF_TRUE, 0x3F, SA_INCREMENT_NONTRANSMITTED_IV_TRUE);
// AOS Tests
// TM Tests
//Crypto_Config_Add_Gvcid_Managed_Parameter(1, 0x002c, 0, AOS_HAS_FECF, AOS_SEGMENT_HDRS_NA, AOS_NO_OCF, 1786, AOS_NO_FHEC, AOS_HAS_IZ, 10);
GvcidManagedParameters_t AOS_Managed_Parameters = {1, 0x002c, 0, AOS_HAS_FECF, AOS_NO_FHEC, AOS_HAS_IZ, 10, AOS_SEGMENT_HDRS_NA, 1786, AOS_NO_OCF, 1};
Crypto_Config_Add_Gvcid_Managed_Parameters(AOS_Managed_Parameters);
GvcidManagedParameters_t TM_UT_Managed_Parameters = {0, 0x002c, 0, TM_HAS_FECF, AOS_FHEC_NA, AOS_IZ_NA, 0, TM_SEGMENT_HDRS_NA, 1786, TM_NO_OCF, 1};
Crypto_Config_Add_Gvcid_Managed_Parameters(TM_UT_Managed_Parameters);

status = Crypto_Init();

// Test frame setup
char* framed_tm_h = "02c000001800FFFF";
char* framed_tm_h = "02c00000180000FFFFFF";
char* framed_tm_b = NULL;
int framed_tm_len = 0;
hex_conversion(framed_tm_h, &framed_tm_b, &framed_tm_len);
Expand All @@ -1169,4 +1178,39 @@ UTEST(TM_PROCESS, TM_SA_SEGFAULT_TEST)
free(ptr_processed_frame);
}

UTEST(TM_PROCESS, TM_SA_NOT_OPERATIONAL)
{
// Local Variables
int32_t status = CRYPTO_LIB_SUCCESS;
uint8_t* ptr_processed_frame = NULL;
uint16_t processed_tm_len;

// Configure Parameters
Crypto_Config_CryptoLib(KEY_TYPE_INTERNAL, MC_TYPE_INTERNAL, SA_TYPE_INMEMORY, CRYPTOGRAPHY_TYPE_LIBGCRYPT,
IV_INTERNAL, CRYPTO_TC_CREATE_FECF_TRUE, TC_PROCESS_SDLS_PDUS_TRUE, TC_HAS_PUS_HDR,
TC_IGNORE_SA_STATE_FALSE, TC_IGNORE_ANTI_REPLAY_TRUE, TC_UNIQUE_SA_PER_MAP_ID_FALSE,
TC_CHECK_FECF_TRUE, 0x3F, SA_INCREMENT_NONTRANSMITTED_IV_TRUE);
// TM Tests
//Crypto_Config_Add_Gvcid_Managed_Parameter(0, 0x0003, 0, TC_HAS_FECF, TC_HAS_SEGMENT_HDRS, TC_OCF_NA, 1024, AOS_FHEC_NA, AOS_IZ_NA, 0);
GvcidManagedParameters_t TM_UT_Managed_Parameters = {0, 0x002c, 0, TM_HAS_FECF, AOS_FHEC_NA, AOS_IZ_NA, 0, TM_SEGMENT_HDRS_NA, 1786, TM_NO_OCF, 1};
Crypto_Config_Add_Gvcid_Managed_Parameters(TM_UT_Managed_Parameters);

status = Crypto_Init();

TC_t* tc_sdls_processed_frame;
tc_sdls_processed_frame = malloc(sizeof(uint8_t) * TC_SIZE);
memset(tc_sdls_processed_frame, 0, (sizeof(uint8_t) * TC_SIZE));

char* framed_tm_h = "02C000001800002C414243444546";
char* framed_tm_b = NULL;
int framed_tm_len = 0;
hex_conversion(framed_tm_h, &framed_tm_b, &framed_tm_len);
status = Crypto_TM_ProcessSecurity((uint8_t* )framed_tm_b, framed_tm_len, &ptr_processed_frame, &processed_tm_len);

ASSERT_EQ(CRYPTO_LIB_ERR_SA_NOT_OPERATIONAL, status);
free(framed_tm_b);
free(tc_sdls_processed_frame);
Crypto_Shutdown();
}

UTEST_MAIN();
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