drivers/s390/crypto/zcrypt_pcica.h

   1 /*
   2  *  linux/drivers/s390/crypto/zcrypt_pcica.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_PCICA_H_
  29 #define _ZCRYPT_PCICA_H_
  30
  31 /**
  32  * The type 4 message family is associated with a PCICA 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 type4_hdr {
  42         unsigned char  reserved1;
  43         unsigned char  msg_type_code;   /* 0x04 */
  44         unsigned short msg_len;
  45         unsigned char  request_code;    /* 0x40 */
  46         unsigned char  msg_fmt;
  47         unsigned short reserved2;
  48 } __attribute__((packed));
  49
  50 #define TYPE4_TYPE_CODE 0x04
  51 #define TYPE4_REQU_CODE 0x40
  52
  53 #define TYPE4_SME_FMT 0x00
  54 #define TYPE4_LME_FMT 0x10
  55 #define TYPE4_SCR_FMT 0x40
  56 #define TYPE4_LCR_FMT 0x50
  57
  58 /* Mod-Exp, with a small modulus */
  59 struct type4_sme {
  60         struct type4_hdr header;
  61         unsigned char    message[128];
  62         unsigned char    exponent[128];
  63         unsigned char    modulus[128];
  64 } __attribute__((packed));
  65
  66 /* Mod-Exp, with a large modulus */
  67 struct type4_lme {
  68         struct type4_hdr header;
  69         unsigned char    message[256];
  70         unsigned char    exponent[256];
  71         unsigned char    modulus[256];
  72 } __attribute__((packed));
  73
  74 /* CRT, with a small modulus */
  75 struct type4_scr {
  76         struct type4_hdr header;
  77         unsigned char    message[128];
  78         unsigned char    dp[72];
  79         unsigned char    dq[64];
  80         unsigned char    p[72];
  81         unsigned char    q[64];
  82         unsigned char    u[72];
  83 } __attribute__((packed));
  84
  85 /* CRT, with a large modulus */
  86 struct type4_lcr {
  87         struct type4_hdr header;
  88         unsigned char    message[256];
  89         unsigned char    dp[136];
  90         unsigned char    dq[128];
  91         unsigned char    p[136];
  92         unsigned char    q[128];
  93         unsigned char    u[136];
  94 } __attribute__((packed));
  95
  96 /**
  97  * The type 84 response family is associated with a PCICA card.
  98  *
  99  * Note that all unsigned char arrays are right-justified and left-padded
 100  * with zeroes.
 101  *
 102  * Note that all reserved fields must be zeroes.
 103  */
 104
 105 struct type84_hdr {
 106         unsigned char  reserved1;
 107         unsigned char  code;
 108         unsigned short len;
 109         unsigned char  reserved2[4];
 110 } __attribute__((packed));
 111
 112 #define TYPE84_RSP_CODE 0x84
 113
 114 int zcrypt_pcica_init(void);
 115 void zcrypt_pcica_exit(void);
 116
 117 #endif /* _ZCRYPT_PCICA_H_ */