caam_keyblob.h

/*
 * CAAM public-level include definitions for the key blob
 *
 * Copyright (C) 2015 Freescale Semiconductor, Inc.
 */

#ifndef CAAM_KEYBLOB_H
#define CAAM_KEYBLOB_H

#include <linux/ioctl.h>
#include <linux/types.h>

/* Blob protocol protinfo bits */
#define OP_PCL_BLOB_TK			0x0200
#define OP_PCL_BLOB_EKT			0x0100

#define OP_PCL_BLOB_K2KR_MEM		0x0000
#define OP_PCL_BLOB_K2KR_C1KR		0x0010
#define OP_PCL_BLOB_K2KR_C2KR		0x0030
#define OP_PCL_BLOB_K2KR_AFHAS		0x0050
#define OP_PCL_BLOB_K2KR_C2KR_SPLIT	0x0070

#define OP_PCL_BLOB_PTXT_SECMEM		0x0008
#define OP_PCL_BLOB_BLACK		0x0004

#define OP_PCL_BLOB_FMT_NORMAL		0x0000
#define OP_PCL_BLOB_FMT_MSTR		0x0002
#define OP_PCL_BLOB_FMT_TEST		0x0003

struct caam_kb_data {
	char *rawkey;
	size_t rawkey_len;
	char *keyblob;
	size_t keyblob_len;
	char *keymod;
	size_t keymod_len;
};

#define CAAM_KB_MAGIC		'I'

/**
 * DOC: CAAM_KB_ENCRYPT - generate a key blob from raw key
 *
 * Takes an caam_kb_data struct and returns it with the key blob
 */
#define CAAM_KB_ENCRYPT		_IOWR(CAAM_KB_MAGIC, 0, \
		struct caam_kb_data)

/**
 * DOC: CAAM_KB_DECRYPT - get keys from a key blob
 *
 * Takes an caam_kb_data struct and returns it with the raw key.
 */
#define CAAM_KB_DECRYPT		_IOWR(CAAM_KB_MAGIC, 1, struct caam_kb_data)

#ifndef GENMEM_KEYMOD_LEN
#define GENMEM_KEYMOD_LEN 16
#endif

#endif /* CAAM_KEYBLOB_H */