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146 bytes added ,  19:25, 18 April 2022
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[[Category:File formats]]
   
The Switch uses the NRR file format to verify [[NRO]] at load time. These files contain hashes of each NRO that is allowed to be loaded by the program. An NRO's SHA-256 hash must match any of the hashes in the hash table. NRRs are signed with RSASSA-PSS-2048/SHA-256.
 
The Switch uses the NRR file format to verify [[NRO]] at load time. These files contain hashes of each NRO that is allowed to be loaded by the program. An NRO's SHA-256 hash must match any of the hashes in the hash table. NRRs are signed with RSASSA-PSS-2048/SHA-256.
   Line 10: Line 9:  
| 0x0
 
| 0x0
 
| 0x4
 
| 0x4
| Magic "NRR0"
+
| Magic ("NRR0")
 
|-
 
|-
 
| 0x4
 
| 0x4
 
| 0x4
 
| 0x4
| [9.0.0+] NRR signing key selector
+
| [9.0.0+] SignatureKeyGeneration
 
|-
 
|-
 
| 0x8
 
| 0x8
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|-
 
|-
 
| 0x10
 
| 0x10
| 0x8
+
| 0x220
| Title ID Mask
+
| [[#Certification|Certification]]
|-
  −
| 0x18
  −
| 0x8
  −
| Title ID Pattern
  −
|-
  −
| 0x20
  −
| 0x10
  −
| Reserved
  −
|-
  −
| 0x30
  −
| 0x100
  −
| Modulus for verifying the second signature
  −
|-
  −
| 0x130
  −
| 0x100
  −
| First signature signed by a Nintendo key, over the above contents
   
|-
 
|-
 
| 0x230
 
| 0x230
 
| 0x100
 
| 0x100
| Second signature verifiable with the above key, over the rest of the file
+
| Signature (verifiable with the certification key, over the rest of the file)
 
|-
 
|-
 
| 0x330
 
| 0x330
 
| 0x8
 
| 0x8
| Title ID
+
| ApplicationId
 
|-
 
|-
 
| 0x338
 
| 0x338
 
| 0x4
 
| 0x4
| File Size
+
| Size
 
|-
 
|-
 
| 0x33C
 
| 0x33C
| 0x4
+
| 0x1
| Module Type
+
| NrrKind (0 = User, 1 = JitPlugin)
 +
|-
 +
| 0x33D
 +
| 0x3
 +
| Reserved
 
|-
 
|-
 
| 0x340
 
| 0x340
 
| 0x4
 
| 0x4
| Hash Offset (Always 0x350)
+
| HashOffset (always 0x350)
 
|-
 
|-
 
| 0x344
 
| 0x344
 
| 0x4
 
| 0x4
| Hash Count
+
| NumHash
 
|-
 
|-
 
| 0x348
 
| 0x348
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|-
 
|-
 
| 0x350
 
| 0x350
| 0x20 * Hash Count
+
| 0x20 * NumHash
| NRO hashes (SHA-256)  
+
| NroHashList (SHA-256)
 +
|}
 +
 
 +
= Certification =
 +
{| class="wikitable" border="1"
 +
|-
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x0
 +
| 0x8
 +
| ApplicationIdMask
 +
|-
 +
| 0x8
 +
| 0x8
 +
| ApplicationIdPattern
 +
|-
 +
| 0x10
 +
| 0x10
 +
| Reserved
 +
|-
 +
| 0x20
 +
| 0x100
 +
| PublicKey (modulus for verifying the NRR signature)
 +
|-
 +
| 0x120
 +
| 0x100
 +
| Signature (over the above contents)
 
|}
 
|}

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