1 files changed, 70 insertions, 0 deletions
diff --git a/lib/nfc/parsers/troyka_parser.c b/lib/nfc/parsers/troyka_parser.c
new file mode 100644
index 00000000..653887cb
--- /dev/null
+++ b/lib/nfc/parsers/troyka_parser.c
@@ -0,0 +1,70 @@
+#include "nfc_supported_card.h"
+
+#include <gui/modules/widget.h>
+#include <nfc_worker_i.h>
+
+static const MfClassicAuthContext troyka_keys[] = {
+    {.sector = 0, .key_a = 0xa0a1a2a3a4a5, .key_b = 0xfbf225dc5d58},
+    {.sector = 1, .key_a = 0xa82607b01c0d, .key_b = 0x2910989b6880},
+    {.sector = 2, .key_a = 0x2aa05ed1856f, .key_b = 0xeaac88e5dc99},
+    {.sector = 3, .key_a = 0x2aa05ed1856f, .key_b = 0xeaac88e5dc99},
+    {.sector = 4, .key_a = 0x73068f118c13, .key_b = 0x2b7f3253fac5},
+    {.sector = 5, .key_a = 0xfbc2793d540b, .key_b = 0xd3a297dc2698},
+    {.sector = 6, .key_a = 0x2aa05ed1856f, .key_b = 0xeaac88e5dc99},
+    {.sector = 7, .key_a = 0xae3d65a3dad4, .key_b = 0x0f1c63013dba},
+    {.sector = 8, .key_a = 0xa73f5dc1d333, .key_b = 0xe35173494a81},
+    {.sector = 9, .key_a = 0x69a32f1c2f19, .key_b = 0x6b8bd9860763},
+    {.sector = 10, .key_a = 0x9becdf3d9273, .key_b = 0xf8493407799d},
+    {.sector = 11, .key_a = 0x08b386463229, .key_b = 0x5efbaecef46b},
+    {.sector = 12, .key_a = 0xcd4c61c26e3d, .key_b = 0x31c7610de3b0},
+    {.sector = 13, .key_a = 0xa82607b01c0d, .key_b = 0x2910989b6880},
+    {.sector = 14, .key_a = 0x0e8f64340ba4, .key_b = 0x4acec1205d75},
+    {.sector = 15, .key_a = 0x2aa05ed1856f, .key_b = 0xeaac88e5dc99},
+};
+
+bool troyka_parser_verify(NfcWorker* nfc_worker, FuriHalNfcTxRxContext* tx_rx) {
+    furi_assert(nfc_worker);
+    UNUSED(nfc_worker);
+
+    MfClassicAuthContext auth_ctx = {
+        .key_a = MF_CLASSIC_NO_KEY,
+        .key_b = MF_CLASSIC_NO_KEY,
+        .sector = 8,
+    };
+    return mf_classic_auth_attempt(tx_rx, &auth_ctx, 0xa73f5dc1d333);
+}
+
+bool troyka_parser_read(NfcWorker* nfc_worker, FuriHalNfcTxRxContext* tx_rx) {
+    furi_assert(nfc_worker);
+
+    MfClassicReader reader = {};
+    FuriHalNfcDevData* nfc_data = &nfc_worker->dev_data->nfc_data;
+    mf_classic_get_type(nfc_data->atqa[0], nfc_data->atqa[1], nfc_data->sak, &reader);
+    for(size_t i = 0; i < COUNT_OF(troyka_keys); i++) {
+        mf_classic_reader_add_sector(
+            &reader, troyka_keys[i].sector, troyka_keys[i].key_a, troyka_keys[i].key_b);
+    }
+
+    return mf_classic_read_card(tx_rx, &reader, &nfc_worker->dev_data->mf_classic_data) == 16;
+}
+
+bool troyka_parser_parse(NfcWorker* nfc_worker) {
+    MfClassicData* data = &nfc_worker->dev_data->mf_classic_data;
+    uint8_t* temp_ptr = &data->block[8 * 4 + 1].value[5];
+    uint16_t balance = ((temp_ptr[0] << 8) | temp_ptr[1]) / 25;
+    temp_ptr = &data->block[8 * 4].value[3];
+    uint32_t number = 0;
+    for(size_t i = 0; i < 4; i++) {
+        number <<= 8;
+        number |= temp_ptr[i];
+    }
+    number >>= 4;
+
+    string_printf(
+        nfc_worker->dev_data->parsed_data,
+        "Troyka Transport card\nNumber: %ld\nBalance: %d rub",
+        number,
+        balance);
+
+    return true;
+}