drivers/s390/crypto/zcrypt_cex2a.h

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