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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <inttypes.h>
#include <dect/libdect.h>
#include <dect/auth.h>
#include "common.h"
#define debug(fmt, args...) printf("IWU: PP-MM: " fmt, ## args)
static int rand_fd;
static struct dect_ipui ipui = {
.put = DECT_IPUI_N,
.pun.n.ipei = {
.emc = 0x0ba8,
.psn = 0xa782a,
}
};
struct mm_priv {
uint64_t rand;
uint64_t rs;
uint8_t uak[DECT_AUTH_KEY_LEN];
};
static void mm_authenticate_ind(struct dect_handle *dh,
struct dect_mm_endpoint *mme,
struct dect_mm_authenticate_param *param)
{
struct mm_priv *priv = dect_mm_priv(mme);
struct dect_ie_auth_res res1;
struct dect_mm_authenticate_param reply = {
.res = &res1,
};
uint8_t k[DECT_AUTH_KEY_LEN], ks[DECT_AUTH_KEY_LEN];
uint8_t dck[DECT_CIPHER_KEY_LEN];
dect_auth_b1(priv->uak, sizeof(priv->uak), k);
dect_auth_a11(k, param->rs->value, ks);
dect_auth_a12(ks, param->rand->value, dck, &res1.value);
dect_mm_authenticate_res(dh, mme, true, &reply);
}
static void mm_authenticate_cfm(struct dect_handle *dh,
struct dect_mm_endpoint *mme, bool accept,
struct dect_mm_authenticate_param *param)
{
struct mm_priv *priv = dect_mm_priv(mme);
uint8_t k[DECT_AUTH_KEY_LEN], ks[DECT_AUTH_KEY_LEN];
//uint8_t dck[DECT_CIPHER_KEY_LEN];
uint8_t ac[4];
uint32_t res2;
if (!accept)
goto out;
dect_pin_to_ac("0000", ac, sizeof(ac));
dect_auth_b1(ac, sizeof(ac), k);
dect_auth_a21(k, priv->rs, ks);
dect_auth_a22(ks, priv->rand, &res2);
if (res2 == param->res->value) {
debug("authentication success\n");
memcpy(priv->uak, ks, sizeof(priv->uak));
dect_write_uak(&ipui, priv->uak);
return;
} else
debug("authentication failure: rand: %" PRIx64 " %.8x | %.8x\n",
priv->rand, res2, param->res->value);
out:
dect_event_loop_stop();
}
static void mm_key_allocate_ind(struct dect_handle *dh,
struct dect_mm_endpoint *mme,
struct dect_mm_key_allocate_param *param)
{
struct mm_priv *priv = dect_mm_priv(mme);
struct dect_ie_auth_type auth_type;
struct dect_ie_auth_value rand;
struct dect_ie_auth_res res1;
struct dect_mm_authenticate_param reply = {
.auth_type = &auth_type,
.rand = &rand,
.res = &res1,
};
uint8_t k[DECT_AUTH_KEY_LEN], ks[DECT_AUTH_KEY_LEN];
uint8_t dck[DECT_CIPHER_KEY_LEN];
uint8_t ac[4];
auth_type.auth_id = DECT_AUTH_DSAA;
auth_type.auth_key_type = DECT_KEY_AUTHENTICATION_CODE;
auth_type.auth_key_num = 0 | DECT_AUTH_KEY_IPUI_PARK;
auth_type.cipher_key_num = 0;
auth_type.flags = DECT_AUTH_FLAG_UPC;
read(rand_fd, &rand.value, sizeof(rand.value));
priv->rand = rand.value;
dect_pin_to_ac("0000", ac, sizeof(ac));
dect_auth_b1(ac, sizeof(ac), k);
dect_auth_a11(k, param->rs->value, ks);
dect_auth_a12(ks, param->rand->value, dck, &res1.value);
priv->rs = param->rs->value;
dect_mm_authenticate_req(dh, mme, &reply);
}
static void init_terminal_capability(struct dect_ie_terminal_capability *terminal_capability)
{
terminal_capability->tone = DECT_TONE_CAPABILITY_DIAL_TONE_ONLY;
terminal_capability->echo = DECT_ECHO_PARAMETER_FULL_TCLW;
terminal_capability->noise_rejection = DECT_NOISE_REJECTION_NONE;
terminal_capability->volume_ctrl = DECT_ADAPTIVE_VOLUME_PP_CONTROL_NONE;
terminal_capability->slot = DECT_SLOT_CAPABILITY_FULL_SLOT;
terminal_capability->display = DECT_DISPLAY_CAPABILITY_FULL_DISPLAY;
terminal_capability->display_memory = 48;
terminal_capability->display_lines = 3;
terminal_capability->display_columns = 16;
terminal_capability->display_control = DECT_DISPLAY_CONTROL_CODE_CODING_1;
terminal_capability->display_charsets = 0;
terminal_capability->scrolling = DECT_SCROLLING_NOT_SPECIFIED;
terminal_capability->profile_indicator = DECT_PROFILE_GAP_SUPPORTED |
DECT_PROFILE_NG_DECT_PART_1 |
DECT_PROFILE_NG_DECT_PART_3;
}
static int mm_access_rights_req(struct dect_handle *dh, struct dect_mm_endpoint *mme)
{
struct dect_ie_portable_identity portable_identity;
struct dect_ie_auth_type auth_type;
struct dect_ie_terminal_capability terminal_capability;
struct dect_mm_access_rights_param param = {
.portable_identity = &portable_identity,
.auth_type = &auth_type,
.terminal_capability = &terminal_capability,
};
portable_identity.type = DECT_PORTABLE_ID_TYPE_IPUI;
portable_identity.ipui = ipui;
auth_type.auth_id = DECT_AUTH_DSAA;
auth_type.auth_key_type = DECT_KEY_AUTHENTICATION_CODE;
auth_type.auth_key_num = 0 | DECT_AUTH_KEY_IPUI_PARK;
auth_type.cipher_key_num = 0;
auth_type.flags = 0;
init_terminal_capability(&terminal_capability);
return dect_mm_access_rights_req(dh, mme, ¶m);
}
static struct dect_mm_ops mm_ops = {
.priv_size = sizeof(struct mm_priv),
.mm_key_allocate_ind = mm_key_allocate_ind,
.mm_authenticate_cfm = mm_authenticate_cfm,
.mm_authenticate_ind = mm_authenticate_ind,
};
static struct dect_ops ops = {
.mm_ops = &mm_ops,
};
int main(int argc, char **argv)
{
struct dect_mm_endpoint *mme;
rand_fd = open("/dev/urandom", O_RDONLY);
if (rand_fd < 0)
exit(1);
dect_common_init(&ops, argv[1]);
mme = dect_mm_endpoint_alloc(dh, &ipui);
if (mme == NULL)
exit(1);
mm_access_rights_req(dh, mme);
dect_event_loop();
dect_common_cleanup(dh);
dect_mm_endpoint_destroy(dh, mme);
close(rand_fd);
return 0;
}
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