/* $Id: scT1.c,v 1.5 2001/07/20 15:51:45 rees Exp $ */ /* copyright 1997, 1999, 2000 the regents of the university of michigan all rights reserved permission is granted to use, copy, create derivative works and redistribute this software and such derivative works for any purpose, so long as the name of the university of michigan is not used in any advertising or publicity pertaining to the use or distribution of this software without specific, written prior authorization. if the above copyright notice or any other identification of the university of michigan is included in any copy of any portion of this software, then the disclaimer below must also be included. this software is provided as is, without representation from the university of michigan as to its fitness for any purpose, and without warranty by the university of michigan of any kind, either express or implied, including without limitation the implied warranties of merchantability and fitness for a particular purpose. the regents of the university of michigan shall not be liable for any damages, including special, indirect, incidental, or consequential damages, with respect to any claim arising out of or in connection with the use of the software, even if it has been or is hereafter advised of the possibility of such damages. */ /* * T=1 protocol engine * * Jim Rees, University of Michigan, October 1997 */ #ifdef __palmos__ #include <Common.h> #include <System/SysAll.h> #include <System/MemoryMgr.h> #include <System/Unix/unix_stdlib.h> #include <System/Unix/sys_socket.h> #else #include <stdio.h> #endif #include <string.h> #ifdef TIMING #include <sys/time.h> #endif #include "sectok.h" #include "sc7816.h" #ifdef __palmos__ #undef printf #undef sprintf #define printf palmprintf #endif int scioT1(int ttyn, int cla, int ins, int p1, int p2, int ilen, unsigned char *ibuf, int olen, unsigned char *obuf, int *sw1p, int *sw2p) { int i, len, n; unsigned char *bp, *obp, tbuf[256]; /* Send 3 bytes prologue (7816-3 sec 9.4.1 fig 16) */ bp = tbuf; len = 5 + ilen; /* Send APDU */ *bp++ = cla; *bp++ = ins; *bp++ = p1; *bp++ = p2; *bp++ = ilen; /* Send data */ for (i = 0; i < ilen; i++) *bp++ = ibuf[i]; #ifndef HUH if (ilen) { /* I don't understand this, but Visa card wants it */ *bp++ = 0; len++; } #endif obp = obuf ? obuf : tbuf; n = scioT1Iblk(ttyn, len, tbuf, obp); if (n >= 2) { *sw1p = obp[n-2]; *sw2p = obp[n-1]; n -= 2; } return n; } int scioT1Iblk(int ttyn, int ilen, unsigned char *ibuf, unsigned char *obuf) { int n; unsigned char tbuf[256]; static unsigned char ssn; tbuf[0] = 0; tbuf[1] = ssn; ssn ^= 0x40; tbuf[2] = ilen; memcpy(&tbuf[3], ibuf, ilen); n = scioT1pkt(ttyn, tbuf, tbuf); if (n < 0) return n; memcpy(obuf, &tbuf[3], tbuf[2]); return tbuf[2]; } int scioT1pkt(int ttyn, unsigned char *ibuf, unsigned char *obuf) { int i, len; unsigned char edc, *bp; len = ibuf[2] + 3; /* Calculate checksum */ for (i = 0, edc = 0; i < len; i++) edc ^= ibuf[i]; ibuf[len++] = edc; /* Wait BGT = 22 etu */ scsleep(scparam[ttyn].etu * 22 / 1000 + 1); /* Send the packet */ scputblk(ttyn, ibuf, len); /* Read return packet */ bp = obuf; /* Read three byte header */ for (i = 0; i < 3; i++) { if (scgetc(ttyn, bp++, (i == 0) ? scparam[ttyn].bwt : scparam[ttyn].cwt) != SCEOK) { #ifdef DEBUG printf("T=1 header read timeout\n"); #endif return -1; } } len = obuf[2]; /* Read data and edc */ for (i = 0; i < len + 1; i++) { if (scgetc(ttyn, bp++, scparam[ttyn].cwt) != SCEOK) { #ifdef DEBUG printf("T=1 data read timeout\n"); #endif return -1; } } /* Check edc */ for (i = 0, edc = 0; i < len + 3; i++) edc ^= obuf[i]; #ifdef DEBUG if (edc != obuf[len + 3]) printf("edc mismatch, %02x != %02x\n", edc, obuf[len + 3]); #endif return len; }