nxdumptool/source/fs_ext.h

#pragma once

#ifndef __FS_EXT_H__
#define __FS_EXT_H__

#include <switch/types.h>
#include <switch/services/fs.h>

/// Located at offset 0x7000 in the gamecard image.
typedef struct {
    u8 signature[0x100];        ///< RSA-2048 PKCS #1 signature over the rest of the data.
    u32 magic;                  ///< "CERT"
    u8 reserved_1[0x4];
    u8 kek_index;
    u8 reserved_2[0x7];
	u8 device_id[0x10];
	u8 reserved_3[0x10];
	u8 encrypted_data[0xD0];
} FsGameCardCertificate;

/* IFileSystemProxy */
Result fsOpenGameCardStorage(FsStorage *out, const FsGameCardHandle *handle, u32 partition);
Result fsOpenGameCardDetectionEventNotifier(FsEventNotifier *out);

/* IDeviceOperator */
Result fsDeviceOperatorUpdatePartitionInfo(FsDeviceOperator *d, const FsGameCardHandle *handle, u32 *out_title_version, u64 *out_title_id);
Result fsDeviceOperatorGetGameCardDeviceCertificate(FsDeviceOperator *d, const FsGameCardHandle *handle, FsGameCardCertificate *out);

#endif /* __FS_EXT_H__ */