main.c

#include "sha256.h"

#include <string.h>
#include <stdio.h>

int main(int argc, char* argv[]) {

    unsigned char key[32] =
    {
        0xE5, 0xE2, 0x78, 0xAA, 0x1E, 0xE3, 0x40, 0x82, 0xA0, 0x88, 0x27, 0x9C, 0x83, 0xF9, 0xBB, 0xC8,
        0x06, 0x82, 0x1C, 0x52, 0xF2, 0xAB, 0x5D, 0x2B, 0x4A, 0xBD, 0x99, 0x54, 0x50, 0x35, 0x51, 0x14,
    };

    char title[0x10];
    char uniqdata[0x20];
    unsigned char result[0x20];
    int i;
    int interactive = 1;

    memset(uniqdata,0,0x20);
    memset(result,0,0x20);
    memset(title,0,0x10);

    for (int i = 1; i < argc; i++) {
        if (strcmp(argv[i], "-i") == 0) {
            interactive = 1;
            break;
        }
        else if (strcmp(argv[i], "-t") == 0) {
            interactive = 0;
            if (argv[i+1] != NULL) {
                sprintf(title,"%s", argv[i+1] );
            } else {
                printf("Error: No title id given as additional parameter.\n");
                printf("       f.e. PCSA00000.\n");
                return 1;
            }
            break;
        }
    }
    if (interactive == 1) {
        printf("Enter title id name (PCSA00000):"); scanf("%s", title);
    }
    if (strlen(title) != 9) {
        printf("Invalid title ID: %s\n", title);
        return 1;
    }
    sprintf(uniqdata,"np_%s", title );
    // use a standard implementation of a sha256 hmac
    hmac_sha256(key,0x20,uniqdata,strlen(uniqdata),result);

    printf("http://gs-sec.ww.np.dl.playstation.net/pl/np/%s/", title);
    for(i=0;i<0x20;i++) {
       printf("%02x", result[i]);
    }
    printf("/%s-ver.xml\n", title);

    return 0;
}
// Test Example
// Enter title id name (PCSA00000):PCSA00007
// https://gs-sec.ww.np.dl.playstation.net/pl/np/PCSA00007/86d7c3b64d554b9639c5ad69aac20e16ea34c2f513d412f38329257f4ad15782/PCSA00007-ver.xml