unleashed-firmware/applications/main/nfc/helpers/mf_ultralight_auth.c
gornekich d92b0a82cc
NFC refactoring (#3050)
"A long time ago in a galaxy far, far away...." we started NFC subsystem refactoring.

Starring:

- @gornekich - NFC refactoring project lead, architect, senior developer
- @gsurkov - architect, senior developer
- @RebornedBrain - senior developer

Supporting roles:

- @skotopes, @DrZlo13, @hedger - general architecture advisors, code review
- @Astrrra, @doomwastaken, @Hellitron, @ImagineVagon333 - quality assurance

Special thanks:

@bettse, @pcunning, @nxv, @noproto, @AloneLiberty and everyone else who has been helping us all this time and contributing valuable knowledges, ideas and source code.
2023-10-24 12:08:09 +09:00

59 lines
1.6 KiB
C

#include "mf_ultralight_auth.h"
#include <furi.h>
#include <mbedtls/sha1.h>
MfUltralightAuth* mf_ultralight_auth_alloc() {
MfUltralightAuth* instance = malloc(sizeof(MfUltralightAuth));
return instance;
}
void mf_ultralight_auth_free(MfUltralightAuth* instance) {
furi_assert(instance);
free(instance);
}
void mf_ultralight_auth_reset(MfUltralightAuth* instance) {
furi_assert(instance);
instance->type = MfUltralightAuthTypeNone;
memset(&instance->password, 0, sizeof(MfUltralightAuthPassword));
memset(&instance->pack, 0, sizeof(MfUltralightAuthPack));
}
bool mf_ultralight_generate_amiibo_pass(MfUltralightAuth* instance, uint8_t* uid, uint16_t uid_len) {
furi_assert(instance);
furi_assert(uid);
bool generated = false;
if(uid_len == 7) {
instance->password.data[0] = uid[1] ^ uid[3] ^ 0xAA;
instance->password.data[1] = uid[2] ^ uid[4] ^ 0x55;
instance->password.data[2] = uid[3] ^ uid[5] ^ 0xAA;
instance->password.data[3] = uid[4] ^ uid[6] ^ 0x55;
generated = true;
}
return generated;
}
bool mf_ultralight_generate_xiaomi_pass(MfUltralightAuth* instance, uint8_t* uid, uint16_t uid_len) {
furi_assert(instance);
furi_assert(uid);
uint8_t hash[20];
bool generated = false;
if(uid_len == 7) {
mbedtls_sha1(uid, uid_len, hash);
instance->password.data[0] = (hash[hash[0] % 20]);
instance->password.data[1] = (hash[(hash[0] + 5) % 20]);
instance->password.data[2] = (hash[(hash[0] + 13) % 20]);
instance->password.data[3] = (hash[(hash[0] + 17) % 20]);
generated = true;
}
return generated;
}