drivers/s390/crypto/zcrypt_cex2a.h

   1 /*
   2  *  linux/drivers/s390/crypto/zcrypt_cex2a.h
   3  *
   4  *  zcrypt 2.1.0
   5  *
   6  *  Copyright (C)  2001, 2006 IBM Corporation
   7  *  Author(s): Robert Burroughs
   8  *             Eric Rossman (edrossma@us.ibm.com)
   9  *
  10  *  Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
  11  *  Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 2, or (at your option)
  16  * any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  26  */
  27
  28 #ifndef _ZCRYPT_CEX2A_H_
  29 #define _ZCRYPT_CEX2A_H_
  30
  31 /**
  32  * The type 50 message family is associated with a CEX2A card.
  33  *
  34  * The four members of the family are described below.
  35  *
  36  * Note that all unsigned char arrays are right-justified and left-padded
  37  * with zeroes.
  38  *
  39  * Note that all reserved fields must be zeroes.
  40  */
  41 struct type50_hdr {
  42         unsigned char   reserved1;
  43         unsigned char   msg_type_code;  /* 0x50 */
  44         unsigned short  msg_len;
  45         unsigned char   reserved2;
  46         unsigned char   ignored;
  47         unsigned short  reserved3;
  48 } __attribute__((packed));
  49
  50 #define TYPE50_TYPE_CODE        0x50
  51
  52 #define TYPE50_MEB1_FMT         0x0001
  53 #define TYPE50_MEB2_FMT         0x0002
  54 #define TYPE50_CRB1_FMT         0x0011
  55 #define TYPE50_CRB2_FMT         0x0012
  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 /* CRT, with a small modulus */
  78 struct type50_crb1_msg {
  79         struct type50_hdr header;
  80         unsigned short  keyblock_type;  /* 0x0011 */
  81         unsigned char   reserved[6];
  82         unsigned char   p[64];
  83         unsigned char   q[64];
  84         unsigned char   dp[64];
  85         unsigned char   dq[64];
  86         unsigned char   u[64];
  87         unsigned char   message[128];
  88 } __attribute__((packed));
  89
  90 /* CRT, with a large modulus */
  91 struct type50_crb2_msg {
  92         struct type50_hdr header;
  93         unsigned short  keyblock_type;  /* 0x0012 */
  94         unsigned char   reserved[6];
  95         unsigned char   p[128];
  96         unsigned char   q[128];
  97         unsigned char   dp[128];
  98         unsigned char   dq[128];
  99         unsigned char   u[128];
 100         unsigned char   message[256];
 101 } __attribute__((packed));
 102
 103 /**
 104  * The type 80 response family is associated with a CEX2A card.
 105  *
 106  * Note that all unsigned char arrays are right-justified and left-padded
 107  * with zeroes.
 108  *
 109  * Note that all reserved fields must be zeroes.
 110  */
 111
 112 #define TYPE80_RSP_CODE 0x80
 113
 114 struct type80_hdr {
 115         unsigned char   reserved1;
 116         unsigned char   type;           /* 0x80 */
 117         unsigned short  len;
 118         unsigned char   code;           /* 0x00 */
 119         unsigned char   reserved2[3];
 120         unsigned char   reserved3[8];
 121 } __attribute__((packed));
 122
 123 int zcrypt_cex2a_init(void);
 124 void zcrypt_cex2a_exit(void);
 125
 126 #endif /* _ZCRYPT_CEX2A_H_ */