LXR linux/drivers/s390/crypto/zcrypt

   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 */
  39struct 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 */
  58struct 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 */
  68struct 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 */
  78struct 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 */
  88struct 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 */
 101struct 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 */
 114struct 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
 137struct 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
 146int zcrypt_cex2a_init(void);
 147void zcrypt_cex2a_exit(void);
 148
 149#endif /* _ZCRYPT_CEX2A_H_ */
 150