aboutsummaryrefslogtreecommitdiff
path: root/drivers/s390/crypto/zcrypt_cex2a.h
blob: 0dce4b9af184114ecdc13bf3741ab167dfb402d8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
/*
 *  zcrypt 2.1.0
 *
 *  Copyright IBM Corp. 2001, 2006
 *  Author(s): Robert Burroughs
 *	       Eric Rossman (edrossma@us.ibm.com)
 *
 *  Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
 *  Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef _ZCRYPT_CEX2A_H_
#define _ZCRYPT_CEX2A_H_

/**
 * The type 50 message family is associated with a CEX2A card.
 *
 * The four members of the family are described below.
 *
 * Note that all unsigned char arrays are right-justified and left-padded
 * with zeroes.
 *
 * Note that all reserved fields must be zeroes.
 */
struct type50_hdr {
	unsigned char	reserved1;
	unsigned char	msg_type_code;	/* 0x50 */
	unsigned short	msg_len;
	unsigned char	reserved2;
	unsigned char	ignored;
	unsigned short	reserved3;
} __attribute__((packed));

#define TYPE50_TYPE_CODE	0x50

#define TYPE50_MEB1_FMT		0x0001
#define TYPE50_MEB2_FMT		0x0002
#define TYPE50_MEB3_FMT		0x0003
#define TYPE50_CRB1_FMT		0x0011
#define TYPE50_CRB2_FMT		0x0012
#define TYPE50_CRB3_FMT		0x0013

/* Mod-Exp, with a small modulus */
struct type50_meb1_msg {
	struct type50_hdr header;
	unsigned short	keyblock_type;	/* 0x0001 */
	unsigned char	reserved[6];
	unsigned char	exponent[128];
	unsigned char	modulus[128];
	unsigned char	message[128];
} __attribute__((packed));

/* Mod-Exp, with a large modulus */
struct type50_meb2_msg {
	struct type50_hdr header;
	unsigned short	keyblock_type;	/* 0x0002 */
	unsigned char	reserved[6];
	unsigned char	exponent[256];
	unsigned char	modulus[256];
	unsigned char	message[256];
} __attribute__((packed));

/* Mod-Exp, with a larger modulus */
struct type50_meb3_msg {
	struct type50_hdr header;
	unsigned short	keyblock_type;	/* 0x0003 */
	unsigned char	reserved[6];
	unsigned char	exponent[512];
	unsigned char	modulus[512];
	unsigned char	message[512];
} __attribute__((packed));

/* CRT, with a small modulus */
struct type50_crb1_msg {
	struct type50_hdr header;
	unsigned short	keyblock_type;	/* 0x0011 */
	unsigned char	reserved[6];
	unsigned char	p[64];
	unsigned char	q[64];
	unsigned char	dp[64];
	unsigned char	dq[64];
	unsigned char	u[64];
	unsigned char	message[128];
} __attribute__((packed));

/* CRT, with a large modulus */
struct type50_crb2_msg {
	struct type50_hdr header;
	unsigned short	keyblock_type;	/* 0x0012 */
	unsigned char	reserved[6];
	unsigned char	p[128];
	unsigned char	q[128];
	unsigned char	dp[128];
	unsigned char	dq[128];
	unsigned char	u[128];
	unsigned char	message[256];
} __attribute__((packed));

/* CRT, with a larger modulus */
struct type50_crb3_msg {
	struct type50_hdr header;
	unsigned short	keyblock_type;	/* 0x0013 */
	unsigned char	reserved[6];
	unsigned char	p[256];
	unsigned char	q[256];
	unsigned char	dp[256];
	unsigned char	dq[256];
	unsigned char	u[256];
	unsigned char	message[512];
} __attribute__((packed));

/**
 * The type 80 response family is associated with a CEX2A card.
 *
 * Note that all unsigned char arrays are right-justified and left-padded
 * with zeroes.
 *
 * Note that all reserved fields must be zeroes.
 */

#define TYPE80_RSP_CODE 0x80

struct type80_hdr {
	unsigned char	reserved1;
	unsigned char	type;		/* 0x80 */
	unsigned short	len;
	unsigned char	code;		/* 0x00 */
	unsigned char	reserved2[3];
	unsigned char	reserved3[8];
} __attribute__((packed));

int zcrypt_cex2a_init(void);
void zcrypt_cex2a_exit(void);

#endif /* _ZCRYPT_CEX2A_H_ */