]> gitweb.ps.run Git - matrix_esp_thesis/blobdiff - examples/Decrypt.c
update Makefile
[matrix_esp_thesis] / examples / Decrypt.c
index b496780ff01ad0a9ec6ccaf4423d6278a169097c..79236936114cec70689f2357b7b39570aa31b84e 100644 (file)
 #include <matrix.h>\r
 #include <stdio.h>\r
 \r
+#include <olm/sas.h>\r
+\r
 #define SERVER       "https://matrix.org"\r
-#define ACCESS_TOKEN "syt_cHNjaG8_yBvTjVTquGCikvsAenOJ_49mBMO"\r
-#define DEVICE_ID    "MAZNCCZLBR"\r
-#define ROOM_ID      "!koVStwyiiKcBVbXZYz:matrix.org"\r
-#define EVENT_ID     ""\r
+#define USER_ID      "@pscho:matrix.org"\r
+#define DEVICE_ID    "ULZZOKJBYN"\r
+#define SENDER_KEY   "LvVdoHsRRWNxRmG2GO2vky6o6S8RzADpPAaELsd1rjU"\r
+#define ROOM_ID      "!XKFUjAsGrSSrpDFIxB:matrix.org"\r
+#define EVENT_ID     "$_-y42DkC3OmJ_s40gYko7jMwrUQhoXfEut2pMV3E2J8"\r
+#define SESSION_ID   "tzdnJbDrm82D/RpgkZKpILTifQ5Rads+tVzp3ax8+Ls"\r
+\r
+void\r
+GetLine(char * buffer, int n) {\r
+    int c;\r
+    int len = 0;\r
+\r
+    while ((c = getchar()) != '\n' && len < n-1)\r
+        buffer[len++] = c;\r
+    \r
+    buffer[len] = '\0';\r
+}\r
 \r
 int\r
 main(void)\r
 {\r
     MatrixClient client;\r
-    MatrixClientInit(&client,\r
-        SERVER);\r
+    MatrixClientInit(&client);\r
     \r
-    MatrixHttpInit(&client);\r
+    MatrixHttpInit(&client.hc, SERVER);\r
+\r
+    MatrixClientSetUserId(&client, USER_ID);\r
+\r
+    MatrixClientLoginPassword(&client,\r
+        "pscho",\r
+        "Wc23EbmB9G3faMq",\r
+        "Test1");\r
 \r
-    MatrixClientSetAccessToken(&client,\r
-        ACCESS_TOKEN);\r
+    printf("deviceId: %s\n", client.deviceId);\r
+\r
+    MatrixClientGenerateOnetimeKeys(&client, 10);\r
+    MatrixClientUploadOnetimeKeys(&client);\r
+    MatrixClientUploadDeviceKeys(&client);\r
 \r
     static char eventBuffer[1024];\r
     MatrixClientGetRoomEvent(&client,\r
         ROOM_ID,\r
         EVENT_ID,\r
         eventBuffer, 1024);\r
+    \r
+    printf("event: %s\n", eventBuffer);\r
+\r
+    // verify\r
+    // char theirDeviceKey[DEVICE_KEY_SIZE];\r
+    // MatrixClientRequestDeviceKey(&client,\r
+    //     DEVICE_ID,\r
+    //     theirDeviceKey, DEVICE_KEY_SIZE);\r
+    \r
+    char transactionId[256];\r
+    GetLine(transactionId, 128);\r
+\r
+    char verificationReadyBuffer[2048];\r
+    snprintf(verificationReadyBuffer, 2048,\r
+        "{"\r
+        "\"from_device\":\"%s\","\r
+        "\"methods\":[\"m.sas.v1\"],"\r
+        "\"transaction_id\":\"%s\""\r
+        "}",\r
+        client.deviceId,\r
+        transactionId);\r
+    \r
+    MatrixClientSendToDevice(&client,\r
+        USER_ID,\r
+        DEVICE_ID,\r
+        verificationReadyBuffer,\r
+        "m.key.verification.ready");\r
+    \r
+    OlmSAS * olmSas = olm_sas(malloc(olm_sas_size()));\r
+    void * sasRandomBytes = malloc(olm_create_sas_random_length(olmSas));\r
+    olm_create_sas(olmSas,\r
+        sasRandomBytes,\r
+        olm_create_sas_random_length(olmSas));\r
+    \r
+    OlmUtility * olmUtil = olm_utility(malloc(olm_utility_size()));\r
+    \r
+    char publicKey[128];\r
+    char keyStartJson[1024];\r
+    char concat[1024];\r
+    char commitment[256];\r
+    olm_sas_get_pubkey(olmSas,\r
+        publicKey,\r
+        128);\r
+    GetLine(keyStartJson, 1024);\r
+    printf("keyStartJson: %s\n", keyStartJson);\r
+    snprintf(concat, 1024, "%s%s", publicKey, keyStartJson);\r
+    printf("concat: %s\n", concat);\r
+    olm_sha256(olmUtil, concat, strlen(concat), commitment, 256);\r
+    printf("hash: %s\n", commitment);\r
+    \r
+    char verificationAcceptBuffer[2048];\r
+    snprintf(verificationAcceptBuffer, 2048,\r
+        "{"\r
+        "\"commitment\":\"%s\","\r
+        "\"hash\":\"sha256\","\r
+        "\"key_agreement_protocol\":\"curve25519\","\r
+        "\"message_authentication_code\":\"hkdf-hmac-sha256.v2\","\r
+        "\"method\":\"m.sas.v1\","\r
+        "\"short_authentication_string\":[\"decimal\"],"\r
+        "\"transaction_id\":\"%s\""\r
+        "}",\r
+        commitment,\r
+        transactionId);\r
+    \r
+    MatrixClientSendToDevice(&client,\r
+        USER_ID,\r
+        DEVICE_ID,\r
+        verificationAcceptBuffer,\r
+        "m.key.verification.accept");\r
+    \r
+    char theirPublicKey[128];\r
+    GetLine(theirPublicKey, 128);\r
+    olm_sas_set_their_key(olmSas, theirPublicKey, strlen(theirPublicKey));\r
+    \r
+    char verificationKeyBuffer[2048];\r
+    snprintf(verificationKeyBuffer, 2048,\r
+        "{"\r
+        "\"key\":\"%s\","\r
+        "\"transaction_id\":\"%s\""\r
+        "}",\r
+        publicKey,\r
+        transactionId);\r
+    \r
+    MatrixClientSendToDevice(&client,\r
+        USER_ID,\r
+        DEVICE_ID,\r
+        verificationKeyBuffer,\r
+        "m.key.verification.key");\r
+\r
+    char hkdfInfo[1024];\r
+    int hkdfInfoLen =\r
+        snprintf(hkdfInfo, 1024,\r
+            "MATRIX_KEY_VERIFICATION_SAS%s%s%s%s%s",\r
+            USER_ID,\r
+            DEVICE_ID,\r
+            USER_ID,\r
+            client.deviceId,\r
+            transactionId);\r
+\r
+    unsigned char sasBytes[5];\r
+    olm_sas_generate_bytes(olmSas,\r
+        hkdfInfo, hkdfInfoLen,\r
+        sasBytes, 5);\r
+    int b0 = sasBytes[0];\r
+    int b1 = sasBytes[1];\r
+    int b2 = sasBytes[2];\r
+    int b3 = sasBytes[3];\r
+    int b4 = sasBytes[4];\r
+    \r
+    printf("%d %d %d %d %d\n", b0, b1, b2, b3, b4);\r
+\r
+    // https://spec.matrix.org/v1.7/client-server-api/#sas-method-decimal\r
+    printf("%d | %d | %d\n",\r
+        (b0 << 5 | b1 >> 3) + 1000,\r
+        ((b1 & 0x7) << 10 | b2 << 2 | b3 >> 6) + 1000,\r
+        ((b3 & 0x3F) << 7 | b4 >> 1) + 1000);\r
+    printf("%d | %d | %d\n",\r
+        ((b0 << 5) | (b1 >> 3)) + 1000,\r
+        (((b1 & 0x7) << 10) | (b2 << 2) | (b3 >> 6)) + 1000,\r
+        (((b3 & 0x3F) << 7) | (b4 >> 1)) + 1000);\r
+    \r
+    // mac\r
+    const char * masterKey = "vt8tJ5/SxqkvXS+XoGxr+4rJNe8fJfZT3/e/FTwlFsI";\r
+\r
+    char keyList[1024];\r
+    char keyListMac[1024];\r
+    char key1Id[1024];\r
+    char key1[1024];\r
+    char key1Mac[1024];\r
+    char key2Id[1024];\r
+    char key2[1024];\r
+    char key2Mac[1024];\r
+\r
+    if (strcmp(masterKey, client.deviceId) < 0) {\r
+        //strcpy(key1Id, masterKey);\r
+        snprintf(key1Id, 1024, "ed25519:%s", masterKey);\r
+        strcpy(key1, masterKey);\r
+        //strcpy(key2Id, client.deviceId);\r
+        snprintf(key2Id, 1024, "ed25519:%s", client.deviceId);\r
+        MatrixOlmAccountGetSigningKey(&client.olmAccount, key2, 1024);\r
+    }\r
+    else {\r
+        //strcpy(key1Id, client.deviceId);\r
+        snprintf(key1Id, 1024, "ed25519:%s", client.deviceId);\r
+        MatrixOlmAccountGetSigningKey(&client.olmAccount, key1, 1024);\r
+        //strcpy(key2Id, masterKey);\r
+        snprintf(key2Id, 1024, "ed25519:%s", masterKey);\r
+        strcpy(key2, masterKey);\r
+    }\r
+\r
+    snprintf(keyList, 1024,\r
+        "%s,%s", key1Id, key2Id);\r
+    \r
+    char macInfo[1024];\r
+    int macInfoLen;\r
+    {\r
+        macInfoLen =\r
+            snprintf(macInfo, 1024,\r
+                "MATRIX_KEY_VERIFICATION_MAC%s%s%s%s%s%s",\r
+                USER_ID,\r
+                client.deviceId,\r
+                USER_ID,\r
+                DEVICE_ID,\r
+                transactionId,\r
+                "KEY_IDS");\r
+        olm_sas_calculate_mac_fixed_base64(olmSas, keyList, strlen(keyList), macInfo, macInfoLen, keyListMac, 1024);\r
+    }\r
+    {\r
+        macInfoLen =\r
+            snprintf(macInfo, 1024,\r
+                "MATRIX_KEY_VERIFICATION_MAC%s%s%s%s%s%s",\r
+                USER_ID,\r
+                client.deviceId,\r
+                USER_ID,\r
+                DEVICE_ID,\r
+                transactionId,\r
+                key1Id);\r
+        olm_sas_calculate_mac_fixed_base64(olmSas, key1, strlen(key1), macInfo, macInfoLen, key1Mac, 1024);\r
+    }\r
+    {\r
+        macInfoLen =\r
+            snprintf(macInfo, 1024,\r
+                "MATRIX_KEY_VERIFICATION_MAC%s%s%s%s%s%s",\r
+                USER_ID,\r
+                client.deviceId,\r
+                USER_ID,\r
+                DEVICE_ID,\r
+                transactionId,\r
+                key2Id);\r
+        olm_sas_calculate_mac_fixed_base64(olmSas, key2, strlen(key2), macInfo, macInfoLen, key2Mac, 1024);\r
+    }\r
+\r
+    printf("send mac:");\r
+    getchar();\r
+\r
+    char verificationMacBuffer[2048];\r
+    snprintf(verificationMacBuffer, 2048,\r
+        "{"\r
+        "\"keys\":\"%s\","\r
+        "\"mac\":{"\r
+        "\"%s\":\"%s\","\r
+        "\"%s\":\"%s\""\r
+        "},"\r
+        "\"transaction_id\":\"%s\""\r
+        "}",\r
+        keyListMac,\r
+        key1Id,\r
+        key1Mac,\r
+        key2Id,\r
+        key2Mac,\r
+        transactionId);\r
+    \r
+    MatrixClientSendToDevice(&client,\r
+        USER_ID,\r
+        DEVICE_ID,\r
+        verificationMacBuffer,\r
+        "m.key.verification.mac");\r
+\r
+    printf("send done:");\r
+    getchar();\r
 \r
-    MatrixMegolmInSession megolmSession;\r
+    char verificationDoneBuffer[2048];\r
+    snprintf(verificationDoneBuffer, 2048,\r
+        "{"\r
+        "\"transaction_id\":\"%s\""\r
+        "}",\r
+        transactionId);\r
     \r
-    MatrixClientRequestMegolmSession(&client,\r
+    MatrixClientSendToDevice(&client,\r
+        USER_ID,\r
+        DEVICE_ID,\r
+        verificationDoneBuffer,\r
+        "m.key.verification.done");\r
+    \r
+    // done\r
+\r
+    // request room key\r
+\r
+    getchar();\r
+    \r
+    MatrixClientRequestMegolmInSession(&client,\r
         ROOM_ID,\r
-        EVENT_ID,\r
-        &megolmSession);\r
+        SESSION_ID,\r
+        SENDER_KEY,\r
+        USER_ID,\r
+        DEVICE_ID);\r
+\r
+    // // decrypt room key\r
+\r
+    MatrixOlmSession * olmSession;\r
+    MatrixClientGetOlmSession(&client,\r
+        USER_ID,\r
+        DEVICE_ID,\r
+        &olmSession);\r
+    static char encrypted[2048];\r
+    static char decrypted[2048];\r
+    printf("encrypted:");\r
+    fgets(encrypted, 2048, stdin);\r
+    printf("(%d) %s;\n", strlen(encrypted), encrypted);\r
+    MatrixOlmSessionDecrypt(olmSession,\r
+        1, encrypted, decrypted, 2048);\r
+    printf("decrypted: %s\n", decrypted);\r
+\r
+    // int c;\r
+    // while ((c = getchar()) != 'q') {\r
+    //     printf("c: %c (%d)\n", c, c);\r
+    //     static char syncBuffer[40000];\r
+    //     MatrixClientSync(&client,\r
+    //         syncBuffer, 40000);\r
+    //     printf("sync: %s", syncBuffer);\r
+    // }\r
+\r
+\r
+    // static char decryptedBuffer[1024];\r
+    // MatrixMegolmInSessionDecrypt(&megolmSession,\r
+    //     eventBuffer,\r
+    //     decryptedBuffer, 1024);\r
+\r
+    // printf("%s\n", decryptedBuffer);\r
 \r
-    static char decryptedBuffer[1024];\r
-    MatrixMegolmSessionDecrypt(&megolmSession,\r
-        eventBuffer,\r
-        decryptedBuffer, 1024);\r
+    getchar();\r
 \r
-    printf("%s\n", decryptedBuffer);\r
+    MatrixClientDeleteDevice(&client);\r
         \r
-    MatrixHttpDeinit(&client);\r
+    MatrixHttpDeinit(&client.hc);\r
 \r
     return 0;\r
-}
\ No newline at end of file
+}\r