kylehuff / buildcrx Goto Github PK

printf( "usage: %s <ZIP file> <PEM file> <PEM password or \"NULL\"> (optional <OUTPUT PATH/FILE>)\n", argv[0] );

int password_cb(char *buf, int size, int rwflag, void *userdata)
{
     strcpy(buf, (char *)userdata);
     return strlen(buf);
}

if (strcmpi(argv[3], "") == 0 || strcmpi(argv[3], "NULL") == 0)
    privateKey = PEM_read_RSAPrivateKey (pemfile, NULL, NULL, NULL);
else
    privateKey = PEM_read_RSAPrivateKey (pemfile, NULL, password_cb, argv[3]);

bool hexencode(char* buf, int size, char *target, int maxtarget) {
    static const char hexChars[] = "0123456789ABCDEF";
    int i = 0;
    for (i = 0; i < size; ++i) {
        target[(i * 2)] = hexChars[(buf[i] >> 4) & 0xf];
        target[(i * 2) + 1] = hexChars[buf[i] & 0xf];
    }
    return true;
}

void hextoidalpha(char* id, int idsize) {
    char x[] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 
        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F };
    for (size_t i = 0; i < idsize; ++i) {
        id[i] = x[id[i]-'0'] + 'a';
    }
}

void generate_appid(char *buf, int size, char out[SHA256_DIGEST_LENGTH]) {
    SHA256_CTX sha;
    byte digest[SHA256_DIGEST_LENGTH];
    char hexDigest[SHA256_DIGEST_LENGTH * 2] = {0};
    SHA256_Init(&sha);
    SHA256_Update (&sha, buf, size);
    SHA256_Final(digest, &sha);
    hexencode((char *)digest, SHA256_DIGEST_LENGTH, hexDigest, SHA256_DIGEST_LENGTH*2);
    hextoidalpha(hexDigest, SHA256_DIGEST_LENGTH);
    strncpy(out, hexDigest, SHA256_DIGEST_LENGTH);
}

    // Print the appid
    char appid[SHA256_DIGEST_LENGTH] = {0};
    generate_appid((char *)derkey,derlen,appid);
    printf("appid: %.32s\n", appid);

OpenSSL_add_all_algorithms();
OpenSSL_add_all_ciphers();
OpenSSL_add_all_digests();