drivers/s390/crypto/zcrypt_cex2a.h

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  *  zcrypt 2.1.0
   4  *
   5  *  Copyright IBM Corp. 2001, 2006
   6  *  Author(s): Robert Burroughs
   7  *             Eric Rossman (edrossma@us.ibm.com)
   8  *
   9  *  Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
  10  *  Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
  11  */
  12
  13 #ifndef _ZCRYPT_CEX2A_H_
  14 #define _ZCRYPT_CEX2A_H_
  15
  16 /**
  17  * The type 50 message family is associated with a CEX2A card.
  18  *
  19  * The four members of the family are described below.
  20  *
  21  * Note that all unsigned char arrays are right-justified and left-padded
  22  * with zeroes.
  23  *
  24  * Note that all reserved fields must be zeroes.
  25  */
  26 struct type50_hdr {
  27         unsigned char   reserved1;
  28         unsigned char   msg_type_code;  /* 0x50 */
  29         unsigned short  msg_len;
  30         unsigned char   reserved2;
  31         unsigned char   ignored;
  32         unsigned short  reserved3;
  33 } __attribute__((packed));
  34
  35 #define TYPE50_TYPE_CODE        0x50
  36
  37 #define TYPE50_MEB1_FMT         0x0001
  38 #define TYPE50_MEB2_FMT         0x0002
  39 #define TYPE50_MEB3_FMT         0x0003
  40 #define TYPE50_CRB1_FMT         0x0011
  41 #define TYPE50_CRB2_FMT         0x0012
  42 #define TYPE50_CRB3_FMT         0x0013
  43
  44 /* Mod-Exp, with a small modulus */
  45 struct type50_meb1_msg {
  46         struct type50_hdr header;
  47         unsigned short  keyblock_type;  /* 0x0001 */
  48         unsigned char   reserved[6];
  49         unsigned char   exponent[128];
  50         unsigned char   modulus[128];
  51         unsigned char   message[128];
  52 } __attribute__((packed));
  53
  54 /* Mod-Exp, with a large modulus */
  55 struct type50_meb2_msg {
  56         struct type50_hdr header;
  57         unsigned short  keyblock_type;  /* 0x0002 */
  58         unsigned char   reserved[6];
  59         unsigned char   exponent[256];
  60         unsigned char   modulus[256];
  61         unsigned char   message[256];
  62 } __attribute__((packed));
  63
  64 /* Mod-Exp, with a larger modulus */
  65 struct type50_meb3_msg {
  66         struct type50_hdr header;
  67         unsigned short  keyblock_type;  /* 0x0003 */
  68         unsigned char   reserved[6];
  69         unsigned char   exponent[512];
  70         unsigned char   modulus[512];
  71         unsigned char   message[512];
  72 } __attribute__((packed));
  73
  74 /* CRT, with a small modulus */
  75 struct type50_crb1_msg {
  76         struct type50_hdr header;
  77         unsigned short  keyblock_type;  /* 0x0011 */
  78         unsigned char   reserved[6];
  79         unsigned char   p[64];
  80         unsigned char   q[64];
  81         unsigned char   dp[64];
  82         unsigned char   dq[64];
  83         unsigned char   u[64];
  84         unsigned char   message[128];
  85 } __attribute__((packed));
  86
  87 /* CRT, with a large modulus */
  88 struct type50_crb2_msg {
  89         struct type50_hdr header;
  90         unsigned short  keyblock_type;  /* 0x0012 */
  91         unsigned char   reserved[6];
  92         unsigned char   p[128];
  93         unsigned char   q[128];
  94         unsigned char   dp[128];
  95         unsigned char   dq[128];
  96         unsigned char   u[128];
  97         unsigned char   message[256];
  98 } __attribute__((packed));
  99
 100 /* CRT, with a larger modulus */
 101 struct type50_crb3_msg {
 102         struct type50_hdr header;
 103         unsigned short  keyblock_type;  /* 0x0013 */
 104         unsigned char   reserved[6];
 105         unsigned char   p[256];
 106         unsigned char   q[256];
 107         unsigned char   dp[256];
 108         unsigned char   dq[256];
 109         unsigned char   u[256];
 110         unsigned char   message[512];
 111 } __attribute__((packed));
 112
 113 /**
 114  * The type 80 response family is associated with a CEX2A card.
 115  *
 116  * Note that all unsigned char arrays are right-justified and left-padded
 117  * with zeroes.
 118  *
 119  * Note that all reserved fields must be zeroes.
 120  */
 121
 122 #define TYPE80_RSP_CODE 0x80
 123
 124 struct type80_hdr {
 125         unsigned char   reserved1;
 126         unsigned char   type;           /* 0x80 */
 127         unsigned short  len;
 128         unsigned char   code;           /* 0x00 */
 129         unsigned char   reserved2[3];
 130         unsigned char   reserved3[8];
 131 } __attribute__((packed));
 132
 133 int zcrypt_cex2a_init(void);
 134 void zcrypt_cex2a_exit(void);
 135
 136 #endif /* _ZCRYPT_CEX2A_H_ */