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Initial commit (port from https://web.archive.org/web/20180712234431/https://reswitched.tech/software/fileformats/nrr)
[[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.
{| class="wikitable" border="1"
|-
! Offset
! Size
! Description
|-
| 0x00
| 4
| “NRR0” magic
|-
| 0x04
| 28
| Unknown (0)
|-
| 0x20
| 8
| Title ID mask?
|-
| 0x28
| 8
| Title ID pattern?
|-
| 0x30
| 256
| Modulus for verifying the second signature
|-
| 0x130
| 256
| First signature signed by a Nintendo key, over the above contents
|-
| 0x230
| 256
| Second signature verifiable with the above key, over the rest of the file
|-
| 0x330
| 8
| Title ID
|-
| 0x338
| 4
| Size
|-
| 0x33C
| 4
| Unknown (0)
|-
| 0x340
| 4
| Hash offset (0x350)
|-
| 0x344
| 4
| Hash count
|-
| 0x348
| 8
| Unknown (0)
|-
| 0x350
| 32 * count
| NRO hashes (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.
{| class="wikitable" border="1"
|-
! Offset
! Size
! Description
|-
| 0x00
| 4
| “NRR0” magic
|-
| 0x04
| 28
| Unknown (0)
|-
| 0x20
| 8
| Title ID mask?
|-
| 0x28
| 8
| Title ID pattern?
|-
| 0x30
| 256
| Modulus for verifying the second signature
|-
| 0x130
| 256
| First signature signed by a Nintendo key, over the above contents
|-
| 0x230
| 256
| Second signature verifiable with the above key, over the rest of the file
|-
| 0x330
| 8
| Title ID
|-
| 0x338
| 4
| Size
|-
| 0x33C
| 4
| Unknown (0)
|-
| 0x340
| 4
| Hash offset (0x350)
|-
| 0x344
| 4
| Hash count
|-
| 0x348
| 8
| Unknown (0)
|-
| 0x350
| 32 * count
| NRO hashes (SHA-256)
|}