drivers/s390/crypto/zcrypt_cex2a.h

   1 /*
   2  *  zcrypt 2.1.0
   3  *
   4  *  Copyright IBM Corp. 2001, 2006
   5  *  Author(s): Robert Burroughs
   6  *             Eric Rossman (edrossma@us.ibm.com)
   7  *
   8  *  Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
   9  *  Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2, or (at your option)
  14  * any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  24  */
  25
  26 #ifndef _ZCRYPT_CEX2A_H_
  27 #define _ZCRYPT_CEX2A_H_
  28
  29 /**
  30  * The type 50 message family is associated with a CEX2A card.
  31  *
  32  * The four members of the family are described below.
  33  *
  34  * Note that all unsigned char arrays are right-justified and left-padded
  35  * with zeroes.
  36  *
  37  * Note that all reserved fields must be zeroes.
  38  */
  39 struct type50_hdr {
  40         unsigned char   reserved1;
  41         unsigned char   msg_type_code;  /* 0x50 */
  42         unsigned short  msg_len;
  43         unsigned char   reserved2;
  44         unsigned char   ignored;
  45         unsigned short  reserved3;
  46 } __attribute__((packed));
  47
  48 #define TYPE50_TYPE_CODE        0x50
  49
  50 #define TYPE50_MEB1_FMT         0x0001
  51 #define TYPE50_MEB2_FMT         0x0002
  52 #define TYPE50_MEB3_FMT         0x0003
  53 #define TYPE50_CRB1_FMT         0x0011
  54 #define TYPE50_CRB2_FMT         0x0012
  55 #define TYPE50_CRB3_FMT         0x0013
  56
  57 /* Mod-Exp, with a small modulus */
  58 struct type50_meb1_msg {
  59         struct type50_hdr header;
  60         unsigned short  keyblock_type;  /* 0x0001 */
  61         unsigned char   reserved[6];
  62         unsigned char   exponent[128];
  63         unsigned char   modulus[128];
  64         unsigned char   message[128];
  65 } __attribute__((packed));
  66
  67 /* Mod-Exp, with a large modulus */
  68 struct type50_meb2_msg {
  69         struct type50_hdr header;
  70         unsigned short  keyblock_type;  /* 0x0002 */
  71         unsigned char   reserved[6];
  72         unsigned char   exponent[256];
  73         unsigned char   modulus[256];
  74         unsigned char   message[256];
  75 } __attribute__((packed));
  76
  77 /* Mod-Exp, with a larger modulus */
  78 struct type50_meb3_msg {
  79         struct type50_hdr header;
  80         unsigned short  keyblock_type;  /* 0x0003 */
  81         unsigned char   reserved[6];
  82         unsigned char   exponent[512];
  83         unsigned char   modulus[512];
  84         unsigned char   message[512];
  85 } __attribute__((packed));
  86
  87 /* CRT, with a small modulus */
  88 struct type50_crb1_msg {
  89         struct type50_hdr header;
  90         unsigned short  keyblock_type;  /* 0x0011 */
  91         unsigned char   reserved[6];
  92         unsigned char   p[64];
  93         unsigned char   q[64];
  94         unsigned char   dp[64];
  95         unsigned char   dq[64];
  96         unsigned char   u[64];
  97         unsigned char   message[128];
  98 } __attribute__((packed));
  99
 100 /* CRT, with a large modulus */
 101 struct type50_crb2_msg {
 102         struct type50_hdr header;
 103         unsigned short  keyblock_type;  /* 0x0012 */
 104         unsigned char   reserved[6];
 105         unsigned char   p[128];
 106         unsigned char   q[128];
 107         unsigned char   dp[128];
 108         unsigned char   dq[128];
 109         unsigned char   u[128];
 110         unsigned char   message[256];
 111 } __attribute__((packed));
 112
 113 /* CRT, with a larger modulus */
 114 struct type50_crb3_msg {
 115         struct type50_hdr header;
 116         unsigned short  keyblock_type;  /* 0x0013 */
 117         unsigned char   reserved[6];
 118         unsigned char   p[256];
 119         unsigned char   q[256];
 120         unsigned char   dp[256];
 121         unsigned char   dq[256];
 122         unsigned char   u[256];
 123         unsigned char   message[512];
 124 } __attribute__((packed));
 125
 126 /**
 127  * The type 80 response family is associated with a CEX2A card.
 128  *
 129  * Note that all unsigned char arrays are right-justified and left-padded
 130  * with zeroes.
 131  *
 132  * Note that all reserved fields must be zeroes.
 133  */
 134
 135 #define TYPE80_RSP_CODE 0x80
 136
 137 struct type80_hdr {
 138         unsigned char   reserved1;
 139         unsigned char   type;           /* 0x80 */
 140         unsigned short  len;
 141         unsigned char   code;           /* 0x00 */
 142         unsigned char   reserved2[3];
 143         unsigned char   reserved3[8];
 144 } __attribute__((packed));
 145
 146 int zcrypt_cex2a_init(void);
 147 void zcrypt_cex2a_exit(void);
 148
 149 #endif /* _ZCRYPT_CEX2A_H_ */