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Offset Size Description
0x0 0x4 Magic "CRR0"
0x4 0x4 Reserved
0x8 0x4 Next loaded CRR (Must be zero in file, set by RO during loading)
0xC 0x4 Previous loaded CRR (Must be zero in file, set by RO during loading)
0x10 0x4 Debug Info Offset
0x14 0x4 Debug Info Size
0x18 0x8 Reserved
0x20 0x4 UniqueID Mask
0x24 0x4 UniqueID Pattern
0x28 0x18 Reserved
0x40 0x100 RSA-2048 modulo
0x140 0x100 RSA-2048 signature signed by Nintendo, starting at offset 0x20 with size 0x120
0x240 0x100 RSA-2048 signature verified with the above modulo, over the data starting at 0x340 with the size from 0x358
0x340 0x4 Process UniqueID<<8, from the ProgramID
0x344 0x4 Size of the whole CRR0 file
0x348 0x8 Reserved
0x350 0x4 Hash-table Offset
0x354 0x4 Total hashes in the hash-table
0x358 0x4 Offset to the plain region containing text tags, from the process NCCH
0x35C 0x4 Size of plain region
0x360 SHA-256 hash-table

Each hash stored in the hash-table is over the corresponding executable CRO0 hash-table.

CRR0 files must be stored under "romfs:/.crr/". The end of the file is aligned to a 0x1000-byte boundary with 0xCC bytes.