Editing Sealedkey / pfsSKKey

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This key can be found on different places and will be used for eg. Save Data or Trophy Data decryption and encryption.
This key can be found on different places and will be used for eg. SaveGame or Trophy Data decryption and encryption.
 
==== Paths ====
==== Flags ====
 
{| class="wikitable"
{| class="wikitable"
|-
|-
! Kind !! Path
! Kind !! Path
|-
|-
| Trophy || /user/home/[[User ID|user Id]]/trophy/data/[[sce_trop]]/sealedkey
| Trophys || /user/home/[[User ID|user Id]]/trophy/data/[[sce_trop]]/sealedkey
|-
|-
| Save Data || /user/home/[[User ID|user Id]]/[[NP Title ID|title Id]]/[[save data directory]]/[[sce_sys]]/
| SaveGames || /user/home/[[User ID|user Id]]/[[NP Title ID|title Id]]/[[save data directory]]/[[sce_sys]]/
|}
|}


== Structure ==
== Structure ==
 
- size always 96 bytes
- size is always 96 bytes


{| class="wikitable"
{| class="wikitable"
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! From !! To !! Description
! From !! To !! Description
|-
|-
| 00 || 07 || MAGIC ("pfsSKKey") (?playstation file system sealed key key?)
| 00 || 07 || Magic ("pfsSKKey") (?playstation file system sealed key key?)
|-
|-
| 08 || 09 || KeySet for getSealedKeySecret (changed beyond kernel 1.73)
| 08 || 0F || Version (game=1 or version ?)
|-
| 0A || 0F || Just 0x00 Bytes
|-
|-
| 10 || 1F || IV (16 bytes)
| 10 || 1F || IV (16 bytes)
|-
|-
| 20 || 3F || Encrypted key (32 bytes)
| 20 || 3F || Sealed Key (32 bytes)
|-
|-
| 40 || 5F || SHA-256 (32 bytes)
| 40 || 5F || SHA-256 (32 bytes)
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'''C'''
'''C'''
<source lang="c">
<source lang="c">
  typedef struct sealedkey_t {
  typedef struct {
     const unsigned char MAGIC[8];
     const char magic;
    const unsigned char KEYSET[2]; // short
     unsigned long version;
     const unsigned char ALIGN0Bytes[6];
     unsigned char iv[16];
     const unsigned char IV[16];
     unsigned char key[32];
     const unsigned char KEY[32];
     unsigned char digest[32];
     const unsigned char SHA256[32];
  } sealed_key;
  } PfsSKKey;
</source>
</source>
'''CSharp'''
<source lang="csharp">
protected internal struct sealedkey {
    internal static byte[] MAGIC = new byte[8];
    internal static short KeySet;
    internal static byte[] AlignBytes = new byte[6];
    internal static byte[] IV = new byte[16];
    internal static byte[] KEY = new byte[32];
    internal static byte[] SHA256 = new byte[32];
}
</source>
Note: You cannot use a const byte[] definition in C#. It needs to be a static byte[].


== De/En -Crypting ==
== De/En -Crypting ==
 
Can be decrypted by asking the OS to do it for you. You will need kernel rights to be able to ask the PS4 for it.
Can be decrypted by friendly asking the OS to do it for you. You will need kernel rights to be able to ask the PS4 for it.
<source lang="c">
<source lang="c">
  /* Decryption */  
  /* Decryption */
  #define foreach(item, array) \
  #define USER1 10000000
    for (int keep = 1, \
#define usb0  "/mnt/usb0/"
              count = 0, \
#define usb1  "/mnt/usb1/"
              size = sizeof(array) / sizeof*(array); \
#define pfs  "decrypted_pfsSKKey.key"
          keep && count != size; \
          keep = !keep, count++) \
        for (item = (array) + count; keep; keep = !keep)
   
   
typedef unsigned char byte;              /* byte defination for c/c++ */
byte PFSK_IDENT[8] = "pfsSKKey";
byte VERSION[8] = "\x01\x00\x00\x00\x00\x00\x00\x00"
const char USER1 = "10000000";
const char usb0 = "/mnt/usb0/";
const char usb1 = "/mnt/usb1/";
const char pfs = "dec_pfsSK.Key";
const char home = "/user/home/";
const char tropkey = "/trophy/data/sce_trop/sealedkey";
  char usb_error = "[-] ERROR: Can't access usb0 nor usb1!\n[-] Will return now to caller.\n"
  char usb_error = "[-] ERROR: Can't access usb0 nor usb1!\n[-] Will return now to caller.\n"
  char usb0path[(strlen(usb0) + strlen(pfs))];
  char usb0path, usb1path;
char usb1path[strlen(usb0path)];
  unsigned char pfsSKKey[96];
   
/* Get's the encrypted sealed key based on user id */
int get_pfsSKKey(byte *buffer, const char *userID, char path) {
    char toOpen[(strlen(home) + strlen(userID) + strlen(path))];
    sprintf(toOpen, home, userID, path)
   
   
    FILE *pfskey = fopen(toOpen, "r");  
// Get's the encrypted sealed key based on user id.
int get_pfsSKKey(int userID)
{
  FILE *pfskey = fopen("host0:/user/home/" + userID + "/trophy/data/sce_trop/sealedkey", "r");
   
   
    if (!pfskey) return NULL;
  if (pfskey == NULL)
    return 0;
    
    
    fread(buffer, 96, 1, pfskey);
  fread(pfsSKKey, 96, 1, pfskey);
    fclose(pfskey);
  fclose(pfskey);
    return 1;
  return 1;
  }
  }
   
   
  /* Dump the sealedkey. Send over tcp and save to file */
  // Dump the sealedkey. Send over tcp and save to file.
  int dumpDecryptedSealedKey(int to) {
  void dumpDecryptedSealedKey(int to)
     if (to < 0 || to > 1) return -2;
{
  int y = get_pfsSKKey(user1);                                              // First load the key into a buffer.
  if (!y) {
     knet_printf("[-] Can not load the sealed key!\n");
    kernel.printf("[-] Can not load the sealed key!\n");
    return -1;
  }
   
   
    /* First load the sealedkey into a buffer */
  unsigned char decyrpted_pfsSKKey[16];
    PfsSKKEy enc;
  int i = kernel.sceSblSsDecryptSealedKey(pfsSKKey, decrpyted_pfsSKKey);    // Now decrpyt the key.
    if (!get_pfsSKKey(&enc, USER1, tropkey)) {
  knet_printf("[+] sceSblSsDecryptSealedKey returned %d\n", i);
        printf("[-] Can not load the sealed key!\n");
  kernel.printf("[+] sceSblSsDecryptSealedKey returned %d\n", i); 
        return -1;
 
    }
  if (i) {                                                                 // Sending over tcp.
    knet_printf("[+] Your save game key = ");
    kernel.printf("[+] Your save game key = ");
   
   
     /* Let's check the pfsSKKEy */
     for(int x =0; x < 0x10; x++) {
    if (enc->MAGIC == PFSK_IDENT && enc->CAT == VERSION) {
    knet_printf("%02X", dec_pfsSKKey[x]);
        printf("[+] Magic and version ok!\n[+] sk IV = ");
    kernel.printf("%02X", dec_pfsSKKey[x]);
        foreach(byte *val, &enc->IV) printf("%02X", *val);
        printf("\n[+] sk KEY = ");
        foreach(byte *val, enc->KEY) printf("%02X", *val);
        printf("\n[+] sk Key-SHA256 = ");
        foreach(byte *val, sk->SHA256) printf("%02X", *val);
        printf("\n");
       
     }
     }
     else return -4;
     knet_printf("\n");
     kernel.printf("\n");
    /* Now decrypt it */
    byte dec[16];
 
     if (to == 1) {                                                         // Saving to file.
    int i;
      knet_printf("[+] Will try to save to file...");
    if (!(i = kernel.sceSblSsDecryptSealedKey(&enc, &dec))) {
      kernel.printf("[+] Will try to save to file...");
        printf("[-] Error!\n[-] sceSblSsDecryptSealedKey returned %d\n", i);
        return -1;
     }
    printf("[+] sceSblSsDecryptSealedKey returned %d\n", i);
     if (!to) { /* Print it out */
        printf("[+] Your decrypted sealedkey = ");
        foreach(byte *val, &dec) printf("%02X", *val);
        printf("\n");
        return 1;
    }
    else { /* Saving to file */
        printf("[+] Will try to save to file...");
     
     
        sprintf(usb0path, usb0, pfs);
      usb0path = usb0 + pfs;
        sprintf(usb1path, usb1, pfs);
      usb1path = usb1 + pfs;
      FILE *dump = fopen(usb0path, "w");
        FILE *dump = fopen(usb0path, "w");
   
   
        if (!dump) {
      if (dump == NULL) {
            dump = fopen(usb1path, "w");
        dump = fopen(usb1path, "w");
            if (!dump) {
          if (dump == NULL) {
                printf("fail!\n%s", usb_error);
            knet_printf("fail!\n" + usb_error);
                return -3;
            kernel.printf("fail!\n" + usb_error);
            }
            return -1;
        }
          }
      }
        fwrite(&dec, 16, 1, dump);
      fwrite(dec_pfsSKKey, 0x10, 1, dump);
        printf("done!\n");
      knet_printf("done!\n");
        fclose(dump);
      kernel.printf("done!\n");
        return 1;
      fclose(dump);
     }
     }
  }
  else {
    knet_printf("[+] Error!\n");
    kernel.printf("[+] Error!\n");
  }
  }
  }
</source>
</source>
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