sysmocom
/
open5gs
forked from acouzens/open5gs
11
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

[CRYPT] Constify several input parameters 

This allows easily spotting input vs output parameters, as well as
make it easier for compiler to find out bugs and optimize code.
This commit is contained in:
Pau Espin 2023-12-19 18:00:09 +01:00 committed by Sukchan Lee
parent 9349743295
commit 7728172a83
2 changed files with 30 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
lib/crypt/ogs-kdf.c
View File

@ -36,12 +36,12 @@
#define FC_FOR_EPS_ALGORITHM_KEY_DERIVATION 0x15
typedef struct kdf_param_s {
uint8_t *buf;
const uint8_t *buf;
uint16_t len;
} kdf_param_t[MAX_NUM_OF_KDF_PARAM];
/* KDF function : TS.33220 cluase B.2.0 */
static void ogs_kdf_common(uint8_t *key, uint32_t key_size,
static void ogs_kdf_common(const uint8_t *key, uint32_t key_size,
uint8_t fc, kdf_param_t param, uint8_t *output)
{
int i = 0, pos;
@ -164,7 +164,7 @@ void ogs_kdf_hxres_star(uint8_t *rand, uint8_t *xres_star, uint8_t *hxres_star)
}
/* TS33.501 Annex A.6 : Kseaf derivation function */
void ogs_kdf_kseaf(char *serving_network_name, uint8_t *kausf, uint8_t *kseaf)
void ogs_kdf_kseaf(char *serving_network_name, const uint8_t *kausf, uint8_t *kseaf)
{
kdf_param_t param;
@ -181,10 +181,11 @@ void ogs_kdf_kseaf(char *serving_network_name, uint8_t *kausf, uint8_t *kseaf)
}
/* TS33.501 Annex A.7 : Kamf derivation function */
void ogs_kdf_kamf(char *supi, uint8_t *abba, uint8_t abba_len,
uint8_t *kseaf, uint8_t *kamf)
void ogs_kdf_kamf(const char *supi, const uint8_t *abba, uint8_t abba_len,
const uint8_t *kseaf, uint8_t *kamf)
{
kdf_param_t param;
char *val;
ogs_assert(supi);
ogs_assert(abba);
@ -192,22 +193,23 @@ void ogs_kdf_kamf(char *supi, uint8_t *abba, uint8_t abba_len,
ogs_assert(kseaf);
ogs_assert(kamf);
val = ogs_id_get_value(supi);
memset(param, 0, sizeof(param));
param[0].buf = (uint8_t *)ogs_id_get_value(supi);
param[0].buf = (const uint8_t*) val;
ogs_assert(param[0].buf);
param[0].len = strlen((char *)param[0].buf);
param[0].len = strlen(val);
param[1].buf = abba;
param[1].len = abba_len;
ogs_kdf_common(kseaf, OGS_SHA256_DIGEST_SIZE,
FC_FOR_KAMF_DERIVATION, param, kamf);
ogs_free(param[0].buf);
ogs_free(val);
}
/* TS33.501 Annex A.8 : Algorithm key derivation functions */
void ogs_kdf_nas_5gs(uint8_t algorithm_type_distinguishers,
uint8_t algorithm_identity, uint8_t *kamf, uint8_t *knas)
uint8_t algorithm_identity, const uint8_t *kamf, uint8_t *knas)
{
kdf_param_t param;
uint8_t output[OGS_SHA256_DIGEST_SIZE];
@ -227,7 +229,7 @@ void ogs_kdf_nas_5gs(uint8_t algorithm_type_distinguishers,
}
/* TS33.501 Annex A.9 KgNB and Kn3iwf derivation function */
void ogs_kdf_kgnb_and_kn3iwf(uint8_t *kamf, uint32_t ul_count,
void ogs_kdf_kgnb_and_kn3iwf(const uint8_t *kamf, uint32_t ul_count,
uint8_t access_type_distinguisher, uint8_t *kgnb)
{
kdf_param_t param;
@ -247,7 +249,7 @@ void ogs_kdf_kgnb_and_kn3iwf(uint8_t *kamf, uint32_t ul_count,
}
/* TS33.501 Annex A.10 NH derivation function */
void ogs_kdf_nh_gnb(uint8_t *kamf, uint8_t *sync_input, uint8_t *kgnb)
void ogs_kdf_nh_gnb(const uint8_t *kamf, uint8_t *sync_input, uint8_t *kgnb)
{
kdf_param_t param;
@ -268,7 +270,7 @@ void ogs_kdf_nh_gnb(uint8_t *kamf, uint8_t *sync_input, uint8_t *kgnb)
* ANSI-X9.63-KDF
*/
void ogs_kdf_ansi_x963(
uint8_t *z, size_t z_len, uint8_t *info, size_t info_len,
const uint8_t *z, size_t z_len, const uint8_t *info, size_t info_len,
uint8_t *ek, uint8_t *icb, uint8_t *mk)
{
uint8_t input[ECC_BYTES+4+ECC_BYTES+1];
@ -333,7 +335,7 @@ void ogs_auc_kasme(const uint8_t *ck, const uint8_t *ik,
}
/* TS33.401 Annex A.3 KeNB derivation function */
void ogs_kdf_kenb(uint8_t *kasme, uint32_t ul_count, uint8_t *kenb)
void ogs_kdf_kenb(const uint8_t *kasme, uint32_t ul_count, uint8_t *kenb)
{
kdf_param_t param;
@ -347,7 +349,7 @@ void ogs_kdf_kenb(uint8_t *kasme, uint32_t ul_count, uint8_t *kenb)
}
/* TS33.401 Annex A.4 NH derivation function */
void ogs_kdf_nh_enb(uint8_t *kasme, uint8_t *sync_input, uint8_t *kenb)
void ogs_kdf_nh_enb(const uint8_t *kasme, const uint8_t *sync_input, uint8_t *kenb)
{
kdf_param_t param;
@ -361,7 +363,7 @@ void ogs_kdf_nh_enb(uint8_t *kasme, uint8_t *sync_input, uint8_t *kenb)
/* TS33.401 Annex A.7 Algorithm key derivation functions */
void ogs_kdf_nas_eps(uint8_t algorithm_type_distinguishers,
uint8_t algorithm_identity, uint8_t *kasme, uint8_t *knas)
uint8_t algorithm_identity, const uint8_t *kasme, uint8_t *knas)
{
kdf_param_t param;
uint8_t output[OGS_SHA256_DIGEST_SIZE];
@ -381,7 +383,7 @@ void ogs_kdf_nas_eps(uint8_t algorithm_type_distinguishers,
* TS33.401 Annex I Hash Functions
* Use the KDF given in TS33.220
*/
void ogs_kdf_hash_mme(uint8_t *message, uint8_t message_len, uint8_t *hash_mme)
void ogs_kdf_hash_mme(const uint8_t *message, uint8_t message_len, uint8_t *hash_mme)
{
uint8_t key[32];
uint8_t output[OGS_SHA256_DIGEST_SIZE];

24
lib/crypt/ogs-kdf.h
View File

@ -45,11 +45,11 @@ void ogs_kdf_xres_star(
void ogs_kdf_hxres_star(uint8_t *rand, uint8_t *xres_star, uint8_t *hxres_star);
/* TS33.501 Annex A.6 : Kseaf derivation function */
void ogs_kdf_kseaf(char *serving_network_name, uint8_t *kausf, uint8_t *kseaf);
void ogs_kdf_kseaf(char *serving_network_name, const uint8_t *kausf, uint8_t *kseaf);
/* TS33.501 Annex A.7 : Kamf derivation function */
void ogs_kdf_kamf(char *supi, uint8_t *abba, uint8_t abba_len,
uint8_t *kseaf, uint8_t *kamf);
void ogs_kdf_kamf(const char *supi, const uint8_t *abba, uint8_t abba_len,
const uint8_t *kseaf, uint8_t *kamf);
/* Algorithm Type Distinguishers */
#define OGS_KDF_NAS_ENC_ALG 0x01
@ -68,14 +68,14 @@ void ogs_kdf_kamf(char *supi, uint8_t *abba, uint8_t abba_len,
/* TS33.501 Annex A.8 : Algorithm key derivation functions */
void ogs_kdf_nas_5gs(uint8_t algorithm_type_distinguishers,
uint8_t algorithm_identity, uint8_t *kamf, uint8_t *knas);
uint8_t algorithm_identity, const uint8_t *kamf, uint8_t *knas);
/* TS33.501 Annex A.9 KgNB and Kn3iwf derivation function */
void ogs_kdf_kgnb_and_kn3iwf(uint8_t *kamf, uint32_t ul_count,
void ogs_kdf_kgnb_and_kn3iwf(const uint8_t *kamf, uint32_t ul_count,
uint8_t access_type_distinguisher, uint8_t *kgnb);
/* TS33.501 Annex A.10 NH derivation function */
void ogs_kdf_nh_gnb(uint8_t *kamf, uint8_t *sync_input, uint8_t *kgnb);
void ogs_kdf_nh_gnb(const uint8_t *kamf, uint8_t *sync_input, uint8_t *kgnb);
/*
* TS33.501 Annex C.3.4.1 Profile A
@ -83,29 +83,29 @@ void ogs_kdf_nh_gnb(uint8_t *kamf, uint8_t *sync_input, uint8_t *kgnb);
* ANSI-X9.63-KDF
*/
void ogs_kdf_ansi_x963(
uint8_t *z, size_t z_len, uint8_t *info, size_t info_len,
const uint8_t *z, size_t z_len, const uint8_t *info, size_t info_len,
uint8_t *ek, uint8_t *icb, uint8_t *mk);
/* TS33.401 Annex A.2 KASME derivation function */
void ogs_auc_kasme(const uint8_t *ck, const uint8_t *ik,
void ogs_auc_kasme(const uint8_t *ck, const uint8_t *ik,
const uint8_t *plmn_id, const uint8_t *sqn, const uint8_t *ak,
uint8_t *kasme);
/* TS33.401 Annex A.3 KeNB derivation function */
void ogs_kdf_kenb(uint8_t *kasme, uint32_t ul_count, uint8_t *kenb);
void ogs_kdf_kenb(const uint8_t *kasme, uint32_t ul_count, uint8_t *kenb);
/* TS33.401 Annex A.4 NH derivation function */
void ogs_kdf_nh_enb(uint8_t *kasme, uint8_t *sync_input, uint8_t *kenb);
void ogs_kdf_nh_enb(const uint8_t *kasme, const uint8_t *sync_input, uint8_t *kenb);
/* TS33.401 Annex A.7 Algorithm key derivation functions */
void ogs_kdf_nas_eps(uint8_t algorithm_type_distinguishers,
uint8_t algorithm_identity, uint8_t *kasme, uint8_t *knas);
uint8_t algorithm_identity, const uint8_t *kasme, uint8_t *knas);
/*
* TS33.401 Annex I Hash Functions
* Use the KDF given in TS33.220
*/
void ogs_kdf_hash_mme(uint8_t *message, uint8_t message_len, uint8_t *hash_mme);
void ogs_kdf_hash_mme(const uint8_t *message, uint8_t message_len, uint8_t *hash_mme);
/*
* TS33.102