/* * card-piv.c: Support for PIV-II from NIST SP800-73 * card-default.c: Support for cards with no driver * * Copyright (C) 2001, 2002 Juha Yrjölä * Copyright (C) 2005,2006,2007,2008,2009,2010 Douglas E. Engert * Copyright (C) 2006, Identity Alliance, Thomas Harning * Copyright (C) 2007, EMC, Russell Larner * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "config.h" #ifdef ENABLE_OPENSSL /* empty file without openssl */ #include #include #include #include #include #include #include #include "internal.h" #include "asn1.h" #include "cardctl.h" #ifdef ENABLE_ZLIB #include "compression.h" #endif enum { PIV_OBJ_CCC = 0, PIV_OBJ_CHUI, PIV_OBJ_UCHUI, /* new with 800-73-2 */ PIV_OBJ_X509_PIV_AUTH, PIV_OBJ_CHF, PIV_OBJ_PI, PIV_OBJ_CHFI, PIV_OBJ_X509_DS, PIV_OBJ_X509_KM, PIV_OBJ_X509_CARD_AUTH, PIV_OBJ_SEC_OBJ, PIV_OBJ_9B03, PIV_OBJ_9A06, PIV_OBJ_9C06, PIV_OBJ_9D06, PIV_OBJ_9E06, PIV_OBJ_LAST_ENUM }; /* flags in the piv_obj_cache */ #define PIV_OBJ_CACHE_VALID 1 typedef struct piv_obj_cache { u8* obj_data; size_t obj_len; u8* internal_obj_data; /* like a cert in the object */ size_t internal_obj_len; int flags; } piv_obj_cache_t; typedef struct piv_private_data { struct sc_pin_cmd_pin pin_info; sc_file_t *aid_file; int enumtag; int selected_obj; /* The index into the piv_objects last selected */ int return_only_cert; /* return the cert from the object */ int rwb_state; /* first time -1, 0, in middle, 1 at eof */ int key_ref; /* saved from set_security_env and */ int alg_id; /* used in decrypt, signature */ u8* w_buf; /* write_binary buffer */ size_t w_buf_len; /* length of w_buff */ piv_obj_cache_t obj_cache[PIV_OBJ_LAST_ENUM]; } piv_private_data_t; #define PIV_DATA(card) ((piv_private_data_t*)card->drv_data) struct piv_aid { int enumtag; size_t len_short; /* min lenght without version */ size_t len_long; /* With version and other stuff */ u8 *value; }; /* The Generic entry should be the "A0 00 00 03 08 00 00 01 00 " * NIST published this on 10/6/2005 * 800-73-2 is due for release 11/2007. * 800-73-2 Part 1 now refers to version "02 00" * i.e. "A0 00 00 03 08 00 00 01 00 02 00". * but we dont need the version number. but could get it from the PIX. */ static struct piv_aid piv_aids[] = { {SC_CARD_TYPE_PIV_II_GENERIC, 9, 9, (u8 *) "\xA0\x00\x00\x03\x08\x00\x00\x10\x00" }, {0, 9, 0, NULL } }; /* flags in the piv_object */ #define PIV_OBJECT_TYPE_CERT 1 #define PIV_OBJECT_TYPE_PUBKEY 2 struct piv_object { int enumtag; const char * name; const char * oidstring; size_t tag_len; u8 tag_value[3]; u8 containerid[2]; /* will use as relative paths for simulation */ int flags; /* object has some internal object like a cert */ }; /* Must be in order, and one per enumerated PIV_OBJ */ static struct piv_object piv_objects[] = { { PIV_OBJ_CCC, "Card Capability Container", "2.16.840.1.101.3.7.1.219.0", 3, "\x5F\xC1\x07", "\xDB\x00", 0}, { PIV_OBJ_CHUI, "Card Holder Unique Identifier", "2.16.840.1.101.3.7.2.48.0", 3, "\x5F\xC1\x02", "\x30\x00", 0}, { PIV_OBJ_UCHUI, "Unsigned Card Holder Unique Identifier", "2.16.840.1.101.3.7.2.48.1", 3, "\x5F\xC1\x04", "\x30\x10", 0}, { PIV_OBJ_X509_PIV_AUTH, "X.509 Certificate for PIV Authentication", "2.16.840.1.101.3.7.2.1.1", 3, "\x5F\xC1\x05", "\x01\x01", PIV_OBJECT_TYPE_CERT} , /* extra 400 is hack for MultOS card which returns 2200 bytes */ { PIV_OBJ_CHF, "Card Holder Fingerprints", "2.16.840.1.101.3.7.2.96.16", 3, "\x5F\xC1\x03", "\x60\x10", 0}, { PIV_OBJ_PI, "Printed Information", "2.16.840.1.101.3.7.2.48.1", 3, "\x5F\xC1\x09", "\x30\x01", 0}, { PIV_OBJ_CHFI, "Card Holder Facial Image", "2.16.840.1.101.3.7.2.96.48", 3, "\x5F\xC1\x08", "\x60\x30", 0}, { PIV_OBJ_X509_DS, "X.509 Certificate for Digital Signature", "2.16.840.1.101.3.7.2.1.0", 3, "\x5F\xC1\x0A", "\x01\x00", PIV_OBJECT_TYPE_CERT}, { PIV_OBJ_X509_KM, "X.509 Certificate for Key Management", "2.16.840.1.101.3.7.2.1.2", 3, "\x5F\xC1\x0B", "\x01\x02", PIV_OBJECT_TYPE_CERT}, { PIV_OBJ_X509_CARD_AUTH, "X.509 Certificate for Card Authentication", "2.16.840.1.101.3.7.2.5.0", 3, "\x5F\xC1\x01", "\x05\x00", PIV_OBJECT_TYPE_CERT}, { PIV_OBJ_SEC_OBJ, "Security Object", "2.16.840.1.101.3.7.2.144.0", 3, "\x5F\xC1\x06", "\x90\x00", 0}, /* following not standard , to be used by piv-tool only for testing */ { PIV_OBJ_9B03, "3DES-ECB ADM", "2.16.840.1.101.3.7.2.9999.3", 2, "\x9B\x03", "\x9B\x03", 0}, /* Only used when signing a cert req, usually from engine * after piv-tool generated the key and saved the pub key * to a file. Note RSA key can be 1024, 2048 or 3072 * but still use the "9x06" name. */ { PIV_OBJ_9A06, "RSA 9A Pub key from last genkey", "2.16.840.1.101.3.7.2.9999.20", 2, "\x9A\x06", "\x9A\x06", PIV_OBJECT_TYPE_PUBKEY}, { PIV_OBJ_9C06, "Pub 9C key from last genkey", "2.16.840.1.101.3.7.2.9999.21", 2, "\x9C\x06", "\x9C\x06", PIV_OBJECT_TYPE_PUBKEY}, { PIV_OBJ_9D06, "Pub 9D key from last genkey", "2.16.840.1.101.3.7.2.9999.22", 2, "\x9D\x06", "\x9D\x06", PIV_OBJECT_TYPE_PUBKEY}, { PIV_OBJ_9E06, "Pub 9E key from last genkey", "2.16.840.1.101.3.7.2.9999.23", 2, "\x9E\x06", "\x9E\x06", PIV_OBJECT_TYPE_PUBKEY}, { PIV_OBJ_LAST_ENUM, "", "", 0, "", "", 0} }; static struct sc_card_operations piv_ops; static struct sc_card_driver piv_drv = { "PIV-II for multiple cards", "piv", &piv_ops, NULL, 0, NULL }; /* * If ptr == NULL, just return the size of the tag and lenght and data * otherwise, store tag and length at **ptr, and increment */ static size_t put_tag_and_len(unsigned int tag, size_t len, u8 **ptr) { int i; u8 *p; if (len < 128) { i = 2; } else if (len < 256) { i = 3; } else { i = 4; } if (ptr) { p = *ptr; *p++ = (u8)tag; switch (i) { case 2: *p++ = len; break; case 3: *p++ = 0x81; *p++ = len; break; case 4: *p++ = 0x82; *p++ = (u8) (len >> 8); *p++ = (u8) (len & 0xff); break; } *ptr = p; } else { i += len; } return i; } /* * Send a command and receive data. There is always something to send. * Used by GET DATA, PUT DATA, GENERAL AUTHENTICATE * and GENERATE ASYMMETRIC KEY PAIR. * GET DATA may call to get the first 128 bytes to get the lenght gfrom the tag. * * A caller may provide a buffer, and length to read. If not provided, * an internal 4096 byte buffer is used, and a copy is returned to the * caller. that need to be freed by the caller. */ static int piv_general_io(sc_card_t *card, int ins, int p1, int p2, const u8 * sendbuf, size_t sendbuflen, u8 ** recvbuf, size_t * recvbuflen) { piv_private_data_t * priv = PIV_DATA(card); int r; sc_apdu_t apdu; u8 rbufinitbuf[4096]; u8 *rbuf; size_t rbuflen; unsigned int cla_out, tag_out; const u8 *body; size_t bodylen; SC_FUNC_CALLED(card->ctx,1); sc_debug(card->ctx, "%02x %02x %02x %d : %d %d\n", ins, p1, p2, sendbuflen , card->max_send_size, card->max_recv_size); rbuf = rbufinitbuf; rbuflen = sizeof(rbufinitbuf); /* if caller provided a buffer end length */ if (recvbuf && *recvbuf && recvbuflen && *recvbuflen) { rbuf = *recvbuf; rbuflen = *recvbuflen; } r = sc_lock(card); if (r != SC_SUCCESS) SC_FUNC_RETURN(card->ctx, 1, r); sc_format_apdu(card, &apdu, recvbuf ? SC_APDU_CASE_4_SHORT: SC_APDU_CASE_3_SHORT, ins, p1, p2); apdu.flags |= SC_APDU_FLAGS_CHAINING; apdu.lc = sendbuflen; apdu.datalen = sendbuflen; apdu.data = sendbuf; if (recvbuf) { apdu.resp = rbuf; apdu.le = (card->max_recv_size <= rbuflen)? card->max_recv_size : rbuflen; apdu.resplen = rbuflen; } else { apdu.resp = rbuf; apdu.le = 0; apdu.resplen = 0; } sc_debug(card->ctx,"calling sc_transmit_apdu flags=%x le=%d, resplen=%d, resp=%p", apdu.flags, apdu.le, apdu.resplen, apdu.resp); /* with new adpu.c and chaining, this actually reads the whole object */ r = sc_transmit_apdu(card, &apdu); sc_debug(card->ctx,"DEE r=%d apdu.resplen=%d sw1=%02x sw2=%02x", r, apdu.resplen, apdu.sw1, apdu.sw2); if (r < 0) { sc_debug(card->ctx,"Transmit failed"); goto err; } r = sc_check_sw(card, apdu.sw1, apdu.sw2); /*TODO may be 6c nn if reading only the length */ /* TODO look later at tag vs size read too */ if (r < 0) { sc_debug(card->ctx, "Card returned error "); goto err; } /* * See how much we read and make sure it is asn1 * if not, return 0 indicating no data found */ rbuflen = 0; /* in case rseplen < 3 i.e. not parseable */ if ( recvbuflen && recvbuf && apdu.resplen > 3) { *recvbuflen = 0; /* we should have all the tag data, so we have to tell sc_asn1_find_tag * the buffer is bigger, so it will not produce "ASN1.tag too long!" */ body = rbuf; if (sc_asn1_read_tag(&body, 0xffff, &cla_out, &tag_out, &bodylen) != SC_SUCCESS) { /* only early beta cards had this problem */ sc_debug(card->ctx, "***** received buffer tag MISSING "); body = rbuf; /* some readers/cards might return 6c 00 */ if (apdu.sw1 == 0x61 || apdu.sw2 == 0x6c ) bodylen = 12000; else bodylen = apdu.resplen; } rbuflen = body - rbuf + bodylen; /* if using internal buffer, alloc new one */ if (rbuf == rbufinitbuf) { *recvbuf = (u8 *)malloc(rbuflen); sc_debug(card->ctx, "DEE got buffer %p len %d",*recvbuf, rbuflen); if (*recvbuf == NULL) { r = SC_ERROR_OUT_OF_MEMORY; goto err; } memcpy(*recvbuf, rbuf, rbuflen); /* copy tag too */ } } if (recvbuflen) { *recvbuflen = rbuflen; r = *recvbuflen; } err: sc_unlock(card); SC_FUNC_RETURN(card->ctx, 1, r); } /* Add the PIV-II operations */ /* Should use our own keydata, actually should be common to all cards */ /* only do RSA for now */ static int piv_generate_key(sc_card_t *card, struct sc_cardctl_cryptoflex_genkey_info *keydata) { int r; u8 *rbuf = NULL; size_t rbuflen = 0; size_t buf_len = 0; u8 *buf_end; u8 *p, *rp, *tag; u8 tagbuf[16]; u8 outdata[3]; /* we could also add tag 81 for exponent */ size_t taglen, i; size_t out_len; size_t in_len; unsigned int cla_out, tag_out; SC_FUNC_CALLED(card->ctx, 1); keydata->exponent = 0; keydata->pubkey = NULL; keydata->pubkey_len = 0; out_len = 3; outdata[0] = 0x80; outdata[1] = 0x01; switch (keydata->key_bits) { case 1024: outdata[2] = 0x06; break; case 2048: outdata[2] = 0x07; break; case 3072: outdata[2] = 0x05; break; default: SC_FUNC_RETURN(card->ctx, 1, SC_ERROR_INVALID_ARGUMENTS); } p = tagbuf; put_tag_and_len(0xAC, out_len, &p); memcpy(p, outdata, out_len); p+=out_len; rp = rbuf; buf_end = rp + buf_len; r = piv_general_io(card, 0x47, 0x00, keydata->key_num, tagbuf, p - tagbuf, &rbuf, &rbuflen); if (r >= 0) { const u8 *cp; keydata->exponent = 0; /* expected tag is 7f49. */ /* we will whatever tag is present */ cp = rbuf; in_len = rbuflen; r = sc_asn1_read_tag(&cp, rbuflen, &cla_out, &tag_out, &in_len); if (r != SC_SUCCESS) { sc_debug(card->ctx,"Tag buffer not found"); goto err; } tag = (u8 *) sc_asn1_find_tag(card->ctx, cp, in_len, 0x82, &taglen); if (tag != NULL && taglen <= 4) { keydata->exponent = 0; for (i = 0; i < taglen;i++) { keydata->exponent = (keydata->exponent<<8) + tag[i]; } } tag = (u8 *) sc_asn1_find_tag(card->ctx, cp, in_len, 0x81, &taglen); if (tag != NULL && taglen > 0) { keydata->pubkey = malloc(taglen); if (keydata->pubkey == NULL) SC_FUNC_RETURN(card->ctx, 1, SC_ERROR_OUT_OF_MEMORY); keydata->pubkey_len = taglen; memcpy (keydata->pubkey, tag, taglen); } /* TODO could add key to cache so could use engine to generate key, and */ r = 0; } err: if (rbuf) free(rbuf); SC_FUNC_RETURN(card->ctx, 1, r); } static int piv_select_aid(sc_card_t* card, u8* aid, size_t aidlen, u8* response, size_t *responselen) { sc_apdu_t apdu; int r; SC_FUNC_CALLED(card->ctx,4); if (card->ctx->debug >= 5) sc_debug(card->ctx, "Got args: aid=%x, aidlen=%d, response=%x, responselen=%d\n", aid, aidlen, response, *responselen); sc_format_apdu(card, &apdu, response == NULL ? SC_APDU_CASE_3_SHORT : SC_APDU_CASE_4_SHORT, 0xA4, 0x04, 0x00); apdu.lc = aidlen; apdu.data = aid; apdu.datalen = aidlen; apdu.resp = response; apdu.resplen = *responselen; apdu.le = response == NULL ? 0 : 256; /* could be 21 for fci */ r = sc_transmit_apdu(card, &apdu); *responselen = apdu.resplen; SC_TEST_RET(card->ctx, 4, r); SC_FUNC_RETURN(card->ctx, 4, sc_check_sw(card, apdu.sw1, apdu.sw2)); } /* find the PIV AID on the card. If card->type already filled in, * then look for specific AID only * Assumes that priv may not be present */ static int piv_find_aid(sc_card_t * card, sc_file_t *aid_file) { sc_apdu_t apdu; u8 rbuf[SC_MAX_APDU_BUFFER_SIZE]; int r,i; u8 *tag; size_t taglen; u8 *pix; size_t pixlen; size_t resplen = sizeof(rbuf); SC_FUNC_CALLED(card->ctx,1); /* first see if the default applcation will return a template * that we know about. */ if (card->type == SC_CARD_TYPE_PIV_II_GENERIC) SC_FUNC_RETURN(card->ctx, 1, 0); r = piv_select_aid(card, piv_aids[0].value, piv_aids[0].len_short, rbuf, &resplen); if (r >= 0 && resplen > 2 ) { tag = (u8 *) sc_asn1_find_tag(card->ctx, rbuf, resplen, 0x61, &taglen); if (tag != NULL) { pix = (u8 *) sc_asn1_find_tag(card->ctx, tag, taglen, 0x4F, &pixlen); if (pix != NULL ) { sc_debug(card->ctx,"found PIX"); /* early cards returned full AID, rather then just the pix */ for (i = 0; piv_aids[i].len_long != 0; i++) { if ((pixlen >= 6 && memcmp(pix, piv_aids[i].value + 5, piv_aids[i].len_long - 5 ) == 0) || ((pixlen >= piv_aids[i].len_short && memcmp(pix, piv_aids[i].value, piv_aids[i].len_short) == 0))) { if (card->type > SC_CARD_TYPE_PIV_II_BASE && card->type < SC_CARD_TYPE_PIV_II_BASE+1000 && card->type == piv_aids[i].enumtag) { SC_FUNC_RETURN(card->ctx, 1, i); } else { SC_FUNC_RETURN(card->ctx, 1, i); } } } } } } /* for testing, we can force the use of a specific AID * by using the card= parameter in conf file */ for (i = 0; piv_aids[i].len_long != 0; i++) { if (card->type > SC_CARD_TYPE_PIV_II_BASE && card->type < SC_CARD_TYPE_PIV_II_BASE+1000 && card->type != piv_aids[i].enumtag) { continue; } sc_format_apdu(card, &apdu, SC_APDU_CASE_4_SHORT, 0xA4, 0x04, 0x00); apdu.lc = piv_aids[i].len_long; apdu.data = piv_aids[i].value; apdu.datalen = apdu.lc; apdu.resp = rbuf; apdu.resplen = sizeof(rbuf); apdu.le = 256; r = sc_transmit_apdu(card, &apdu); SC_TEST_RET(card->ctx, r, "APDU transmit failed"); r = sc_check_sw(card, apdu.sw1, apdu.sw2); if (r) { if (card->type != 0 && card->type == piv_aids[i].enumtag) { SC_FUNC_RETURN(card->ctx, 1, i); } continue; } if ( apdu.resplen == 0 && r == 0) { /* could be the MSU card */ continue; /* other cards will return a FCI */ } if (apdu.resp[0] != 0x6f || apdu.resp[1] > apdu.resplen - 2 ) SC_FUNC_RETURN(card->ctx, 2, SC_ERROR_NO_CARD_SUPPORT); card->ops->process_fci(card, aid_file, apdu.resp+2, apdu.resp[1]); if (aid_file->name == NULL) SC_FUNC_RETURN(card->ctx, 1, SC_ERROR_NO_CARD_SUPPORT); SC_FUNC_RETURN(card->ctx, 1, i); } SC_FUNC_RETURN(card->ctx, 1, SC_ERROR_NO_CARD_SUPPORT); } /* the tag is the PIV_OBJ_* */ static int piv_get_data(sc_card_t * card, int enumtag, u8 **buf, size_t *buf_len) { u8 *p; int r = 0; u8 tagbuf[8]; size_t tag_len; char * keyenvname = NULL; SC_FUNC_CALLED(card->ctx,1); sc_debug(card->ctx, "#%d \n", enumtag); //assert(enumtag >= 0 && enumtag < PIV_OBJ_LAST_ENUM); tag_len = piv_objects[enumtag].tag_len; p = tagbuf; put_tag_and_len(0x5c, tag_len, &p); memcpy(p, piv_objects[enumtag].tag_value, tag_len); p += tag_len; /* * the PIV card will only recover the public key during a generate * key operation. If the piv-tool was used it would save this * as an OpenSSL EVP_KEY PEM using the -o parameter * we will look to see if there is a file then load it * this is ugly, and maybe the pkcs15 cache would work * but we only need it to get the OpenSSL req with engine to work. * Each of the 4 keys with certs has its own file. */ switch (piv_objects[enumtag].enumtag) { case PIV_OBJ_9A06: keyenvname = "PIV_9A06_KEY"; break; case PIV_OBJ_9C06: keyenvname = "PIV_9C06_KEY"; break; case PIV_OBJ_9D06: keyenvname = "PIV_9D06_KEY"; break; case PIV_OBJ_9E06: keyenvname = "PIV_9E06_KEY"; break; } if (keyenvname) { BIO * bp = NULL; RSA * rsa = NULL; u8 *q; size_t derlen; size_t taglen; char * keyfilename = NULL; keyfilename = getenv(keyenvname); if (keyfilename == NULL) { r = SC_ERROR_FILE_NOT_FOUND; goto err; } sc_debug(card->ctx, "USING PUB KEY FROM FILE %s",keyfilename); bp = BIO_new(BIO_s_file()); if (bp == NULL) { r = SC_ERROR_INTERNAL; goto err; } if (BIO_read_filename(bp, keyfilename) <= 0) { BIO_free(bp); r = SC_ERROR_FILE_NOT_FOUND; goto err; } rsa = PEM_read_bio_RSAPublicKey(bp, &rsa, NULL, NULL); BIO_free(bp); if (!rsa) { sc_debug(card->ctx,"Unable to load the public key"); r = SC_ERROR_DATA_OBJECT_NOT_FOUND; goto err; } derlen = i2d_RSAPublicKey(rsa, NULL); if (derlen <= 0) { r = SC_ERROR_DATA_OBJECT_NOT_FOUND; goto err; } taglen = put_tag_and_len(0x99, derlen, NULL); *buf_len = put_tag_and_len(0x53, taglen, NULL); *buf = (u8*) malloc(*buf_len); if (*buf == NULL) { r = SC_ERROR_OUT_OF_MEMORY; goto err; } q = *buf; put_tag_and_len(0x53, taglen, &q); put_tag_and_len(0x99, derlen, &q); i2d_RSAPublicKey(rsa, &q); RSA_free(rsa); r = *buf_len; /* end of read PIV_OBJ_9A06 from file */ } else { if (*buf_len == 1 && *buf == NULL) { /* we need to get the length */ u8 rbufinitbuf[8]; /* tag of 53 with 82 xx xx will fit in 4 */ u8 *rbuf; size_t rbuflen; size_t bodylen; unsigned int cla_out, tag_out; const u8 *body; sc_debug(card->ctx,"get len of #%d", enumtag); rbuf = rbufinitbuf; rbuflen = sizeof(rbufinitbuf); r = piv_general_io(card, 0xCB, 0x3F, 0xFF, tagbuf, p - tagbuf, &rbuf, &rbuflen); if (r > 0) { body = rbuf; if (sc_asn1_read_tag(&body, 0xffff, &cla_out, &tag_out, &bodylen) != SC_SUCCESS) { sc_debug(card->ctx, "***** received buffer tag MISSING "); r = SC_ERROR_FILE_NOT_FOUND; goto err; } *buf_len = r; } else if ( r == 0) { r = SC_ERROR_FILE_NOT_FOUND; goto err; } else { goto err; } } sc_debug(card->ctx,"get buffer for #%d len %d", enumtag, *buf_len); if (*buf == NULL && *buf_len > 0) { *buf = (u8*)malloc(*buf_len); if (*buf == NULL ) { r = SC_ERROR_OUT_OF_MEMORY; goto err; } } r = piv_general_io(card, 0xCB, 0x3F, 0xFF, tagbuf, p - tagbuf, buf, buf_len); } err: SC_FUNC_RETURN(card->ctx, 1, r); } static int piv_get_cached_data(sc_card_t * card, int enumtag, u8 **buf, size_t *buf_len) { piv_private_data_t * priv = PIV_DATA(card); int r; u8 *rbuf = NULL; size_t rbuflen; SC_FUNC_CALLED(card->ctx,1); sc_debug(card->ctx, "#%d", enumtag); assert(enumtag >= 0 && enumtag < PIV_OBJ_LAST_ENUM); /* see if we have it cached */ if (priv->obj_cache[enumtag].flags & PIV_OBJ_CACHE_VALID) { sc_debug(card->ctx,"found #%d %p:%d %p:%d", enumtag, priv->obj_cache[enumtag].obj_data, priv->obj_cache[enumtag].obj_len, priv->obj_cache[enumtag].internal_obj_data, priv->obj_cache[enumtag].internal_obj_len); if (priv->obj_cache[enumtag].obj_len == 0) { r = SC_ERROR_FILE_NOT_FOUND; sc_debug(card->ctx,"#%d found but len=0", enumtag); goto err; } *buf = priv->obj_cache[enumtag].obj_data; *buf_len = priv->obj_cache[enumtag].obj_len; r = *buf_len; goto ok; } /* not cached get it, piv_get_data will allocate a buf */ sc_debug(card->ctx,"get #%d", enumtag); rbuflen = 1; r = piv_get_data(card, enumtag, &rbuf, &rbuflen); if (r > 0) { priv->obj_cache[enumtag].flags = PIV_OBJ_CACHE_VALID; priv->obj_cache[enumtag].obj_len = r; priv->obj_cache[enumtag].obj_data = rbuf; *buf = rbuf; *buf_len = r; sc_debug(card->ctx,"added #%d %p:%d %p:%d", enumtag, priv->obj_cache[enumtag].obj_data, priv->obj_cache[enumtag].obj_len, priv->obj_cache[enumtag].internal_obj_data, priv->obj_cache[enumtag].internal_obj_len); } else if (r == 0 || r == SC_ERROR_FILE_NOT_FOUND) { r = SC_ERROR_FILE_NOT_FOUND; priv->obj_cache[enumtag].flags = PIV_OBJ_CACHE_VALID; priv->obj_cache[enumtag].obj_len = 0; } else if ( r < 0) { goto err; } ok: err: SC_FUNC_RETURN(card->ctx, 1, r); } static int piv_cache_internal_data(sc_card_t *card, int enumtag) { piv_private_data_t * priv = PIV_DATA(card); u8* tag; u8* body; size_t taglen; size_t bodylen; int compressed = 0; /* if already cached */ if (priv->obj_cache[enumtag].internal_obj_data && priv->obj_cache[enumtag].internal_obj_len) { sc_debug(card->ctx,"#%d found internal %p:%d", enumtag, priv->obj_cache[enumtag].internal_obj_data, priv->obj_cache[enumtag].internal_obj_len); SC_FUNC_RETURN(card->ctx, 1, 0); } body = (u8 *) sc_asn1_find_tag(card->ctx, priv->obj_cache[enumtag].obj_data, priv->obj_cache[enumtag].obj_len, 0x53, &bodylen); if (body == NULL) SC_FUNC_RETURN(card->ctx, 1, SC_ERROR_OBJECT_NOT_VALID); /* get the certificate out */ if (piv_objects[enumtag].flags & PIV_OBJECT_TYPE_CERT) { tag = (u8 *) sc_asn1_find_tag(card->ctx, body, bodylen, 0x71, &taglen); /* 800-72-1 not clear if this is 80 or 01 Sent comment to NIST for 800-72-2 */ if (tag && (((*tag) & 0x80) || ((*tag) & 0x01))) { compressed = 1; } tag = (u8 *) sc_asn1_find_tag(card->ctx, body, bodylen, 0x70, &taglen); if (tag == NULL) SC_FUNC_RETURN(card->ctx, 1, SC_ERROR_OBJECT_NOT_VALID); if (taglen == 0) SC_FUNC_RETURN(card->ctx, 1, SC_ERROR_FILE_NOT_FOUND); if(compressed) { #ifdef ENABLE_ZLIB size_t len; u8* newBuf = NULL; if(SC_SUCCESS != sc_decompress_alloc(&newBuf, &len, tag, taglen, COMPRESSION_AUTO)) { SC_FUNC_RETURN(card->ctx, 1, SC_ERROR_OBJECT_NOT_VALID); } priv->obj_cache[enumtag].internal_obj_data = newBuf; priv->obj_cache[enumtag].internal_obj_len = len; #else sc_debug(card->ctx,"PIV compression not supported, no zlib"); SC_FUNC_RETURN(card->ctx, 1, SC_ERROR_NOT_SUPPORTED); #endif } else { if (!(priv->obj_cache[enumtag].internal_obj_data = (u8*)malloc(taglen))) SC_FUNC_RETURN(card->ctx, 1, SC_ERROR_OUT_OF_MEMORY); memcpy(priv->obj_cache[enumtag].internal_obj_data, tag, taglen); priv->obj_cache[enumtag].internal_obj_len = taglen; } /* convert pub key to internal */ } else if (piv_objects[enumtag].flags & PIV_OBJECT_TYPE_PUBKEY) { tag = (u8 *) sc_asn1_find_tag(card->ctx, body, bodylen, *body, &taglen); if (tag == NULL) SC_FUNC_RETURN(card->ctx, 1, SC_ERROR_OBJECT_NOT_VALID); if (taglen == 0) SC_FUNC_RETURN(card->ctx, 1, SC_ERROR_FILE_NOT_FOUND); if (!(priv->obj_cache[enumtag].internal_obj_data = (u8*)malloc(taglen))) SC_FUNC_RETURN(card->ctx, 1, SC_ERROR_OUT_OF_MEMORY); memcpy(priv->obj_cache[enumtag].internal_obj_data, tag, taglen); priv->obj_cache[enumtag].internal_obj_len = taglen; } else { SC_FUNC_RETURN(card->ctx, 1, SC_ERROR_INTERNAL); } sc_debug(card->ctx,"added #%d internal %p:%d", enumtag, priv->obj_cache[enumtag].internal_obj_data, priv->obj_cache[enumtag].internal_obj_len); SC_FUNC_RETURN(card->ctx, 1, 0); } /* * Callers of this may be expecting a certificate, * select file will have saved the object type for us * as well as set that we want the cert from the object. */ static int piv_read_binary(sc_card_t *card, unsigned int idx, unsigned char *buf, size_t count, unsigned long flags) { piv_private_data_t * priv = PIV_DATA(card); int enumtag; int r; u8 *rbuf = NULL; size_t rbuflen = 0; u8 *body; size_t bodylen; SC_FUNC_CALLED(card->ctx,1); if (priv->selected_obj < 0) SC_FUNC_RETURN(card->ctx, 1, SC_ERROR_INTERNAL); enumtag = piv_objects[priv->selected_obj].enumtag; if (priv->rwb_state == 1) { r = 0; } if (priv->rwb_state == -1) { r = piv_get_cached_data(card, enumtag, &rbuf, &rbuflen); if (r >=0) { /* an object wih no data will be considered not found */ if (!rbuf || rbuf[0] == 0x00 || (rbuf[0] == 0x53 && rbuf[1] == 0x00)) { r = SC_ERROR_FILE_NOT_FOUND; goto err; } sc_debug(card->ctx, "DEE rbuf=%p,rbuflen=%d,",rbuf, rbuflen); body = (u8 *) sc_asn1_find_tag(card->ctx, rbuf, rbuflen, 0x53, &bodylen); if (body == NULL) { /* if missing, assume its the body */ /* DEE bug in the beta card */ sc_debug(card->ctx," ***** tag 0x53 MISSING \n"); r = SC_ERROR_INVALID_DATA; goto err; } if (bodylen > body - rbuf + rbuflen) { sc_debug(card->ctx," ***** tag length > then data: %d>%d+%d", bodylen , body - rbuf, rbuflen); r = SC_ERROR_INVALID_DATA; goto err; } /* if chached obj has internal interesting data (cert or pub key) */ if (priv->return_only_cert || piv_objects[enumtag].flags & PIV_OBJECT_TYPE_PUBKEY) { r = piv_cache_internal_data(card, enumtag); if (r < 0) goto err; } } priv->rwb_state = 0; } if (priv->return_only_cert || piv_objects[enumtag].flags & PIV_OBJECT_TYPE_PUBKEY) { rbuf = priv->obj_cache[enumtag].internal_obj_data; rbuflen = priv->obj_cache[enumtag].internal_obj_len; } else { rbuf = priv->obj_cache[enumtag].obj_data; rbuflen = priv->obj_cache[enumtag].obj_len; } /* rbuf rbuflen has pointer and length to cached data */ if ( rbuflen < idx + count) count = rbuflen - idx; if (count <= 0) { r = 0; priv->rwb_state = 1; } else { memcpy(buf, rbuf + idx, count); r = count; } err: SC_FUNC_RETURN(card->ctx, 1, r); } /* * the tag is the PIV_OBJ_* * The buf should have the 0x53 tag+len+tags and data */ static int piv_put_data(sc_card_t *card, int tag, const u8 *buf, size_t buf_len) { int r; u8 * sbuf; size_t sbuflen; u8 * p; size_t tag_len; SC_FUNC_CALLED(card->ctx,1); tag_len = piv_objects[tag].tag_len; sbuflen = put_tag_and_len(0x5c, tag_len, NULL) + buf_len; if (!(sbuf = (u8 *) malloc(sbuflen))) SC_FUNC_RETURN(card->ctx, 1, SC_ERROR_OUT_OF_MEMORY); p = sbuf; put_tag_and_len(0x5c, tag_len, &p); memcpy(p, piv_objects[tag].tag_value, tag_len); p += tag_len; memcpy(p, buf, buf_len); p += buf_len; r = piv_general_io(card, 0xDB, 0x3F, 0xFF, sbuf, p - sbuf, NULL, NULL); /* TODO add to cache */ if (sbuf) free(sbuf); SC_FUNC_RETURN(card->ctx, 1, r); } static int piv_write_certificate(sc_card_t *card, const u8* buf, size_t count, unsigned long flags) { piv_private_data_t * priv = PIV_DATA(card); int enumtag; int r = SC_SUCCESS; u8 *sbuf = NULL; u8 *p; size_t sbuflen; size_t taglen; sc_debug(card->ctx,"DEE cert len=%d",count); taglen = put_tag_and_len(0x70, count, NULL) + put_tag_and_len(0x71, 1, NULL) + put_tag_and_len(0xFE, 0, NULL); sbuflen = put_tag_and_len(0x53, taglen, NULL); sbuf = (u8*) malloc(sbuflen); if (sbuf == NULL) SC_FUNC_RETURN(card->ctx, 1, SC_ERROR_OUT_OF_MEMORY); p = sbuf; put_tag_and_len(0x53, taglen, &p); put_tag_and_len(0x70, count, &p); memcpy(p, buf, count); p += count; put_tag_and_len(0x71, 1, &p); *p++ = (flags)? 0x80:0x00; /* certinfo, i.e. gziped? */ put_tag_and_len(0xFE,0,&p); /* LRC tag */ sc_debug(card->ctx,"DEE buf %p len %d %d", sbuf, p -sbuf, sbuflen); enumtag = piv_objects[priv->selected_obj].enumtag; r = piv_put_data(card, enumtag, sbuf, sbuflen); if (sbuf) free(sbuf); SC_FUNC_RETURN(card->ctx, 1, r); } /* * For certs we need to add the 0x53 tag and other specific tags, * and call the piv_put_data * Note: the select file will have saved the object type for us * Write is only used by piv-tool, so we will use flags: * length << 8 | compress < 1 | cert * to indicate we are writing a cert and if is compressed. * if its not a cert its an object. * * Therefore when idx=0, we will get the length of the object * and allocate a buffer, so we can support partial writes. * When the last chuck of the data is sent, we will write it. */ static int piv_write_binary(sc_card_t *card, unsigned int idx, const u8 *buf, size_t count, unsigned long flags) { piv_private_data_t * priv = PIV_DATA(card); int r; int enumtag; SC_FUNC_CALLED(card->ctx,1); if (priv->selected_obj < 0) SC_FUNC_RETURN(card->ctx, 1, SC_ERROR_INTERNAL); enumtag = piv_objects[priv->selected_obj].enumtag; if (priv->rwb_state == 1) /* trying to write at end */ SC_FUNC_RETURN(card->ctx, 1, 0); if (priv->rwb_state == -1) { /* if cached, remove old entry */ if (priv->obj_cache[enumtag].flags & PIV_OBJ_CACHE_VALID) { priv->obj_cache[enumtag].flags = 0; if (priv->obj_cache[enumtag].obj_data) { free(priv->obj_cache[enumtag].obj_data); priv->obj_cache[enumtag].obj_data = NULL; priv->obj_cache[enumtag].obj_len = 0; } if (priv->obj_cache[enumtag].internal_obj_data) { free(priv->obj_cache[enumtag].internal_obj_data); priv->obj_cache[enumtag].internal_obj_data = NULL; priv->obj_cache[enumtag].internal_obj_len = 0; } } if (idx != 0) SC_FUNC_RETURN(card->ctx, 1, SC_ERROR_NO_CARD_SUPPORT); priv->w_buf_len = flags>>8; if (priv->w_buf_len == 0) SC_FUNC_RETURN(card->ctx, 1, SC_ERROR_INTERNAL); priv->w_buf = (u8 *)malloc(priv->w_buf_len); priv-> rwb_state = 0; } /* on each pass make sure we have w_buf */ if (priv->w_buf == NULL) SC_FUNC_RETURN(card->ctx, 1, SC_ERROR_OUT_OF_MEMORY); if (idx + count > priv->w_buf_len) SC_FUNC_RETURN(card->ctx, 1, SC_ERROR_OBJECT_NOT_VALID); memcpy(priv->w_buf + idx, buf, count); /* copy one chunk */ /* if this was not the last chunk, return to get rest */ if (idx + count < priv->w_buf_len) SC_FUNC_RETURN(card->ctx, 1, count); priv-> rwb_state = 1; /* at end of object */ if ( flags & 1) { r = piv_write_certificate(card, priv->w_buf, priv->w_buf_len, flags & 0x02); } else { r = piv_put_data(card, enumtag, priv->w_buf, priv->w_buf_len); } /* if it worked, will cache it */ if (r >= 0 && priv->w_buf) { priv->obj_cache[enumtag].flags = PIV_OBJ_CACHE_VALID; priv->obj_cache[enumtag].obj_data = priv->w_buf; priv->obj_cache[enumtag].obj_len = priv->w_buf_len; } else { if (priv->w_buf) free(priv->w_buf); } priv->w_buf = NULL; priv->w_buf_len = 0; SC_FUNC_RETURN(card->ctx, 1, (r < 0)? r : count); } /* * Card initialization is not standard. * Some cards use mutual or external authentication using s 3des key. We * will read in the key from a file. * This is only needed during initialization/personalization of the card */ static int piv_get_3des_key(sc_card_t *card, u8 *key) { int r; int f = -1; char keybuf[24*3]; /* 3des key as three sets of xx:xx:xx:xx:xx:xx:xx:xx * with a : between which is 71 bytes */ char * keyfilename = NULL; size_t outlen; SC_FUNC_CALLED(card->ctx,1); keyfilename = (char *)getenv("PIV_EXT_AUTH_KEY"); if (keyfilename == NULL) { sc_debug(card->ctx, "Unable to get PIV_EXT_AUTH_KEY=filename for general_external_authenticate\n"); r = SC_ERROR_FILE_NOT_FOUND; goto err; } if ((f = open(keyfilename, O_RDONLY)) < 0) { sc_debug(card->ctx," Unable to load 3des key for general_external_authenticate\n"); r = SC_ERROR_FILE_NOT_FOUND; goto err; } if (read(f, keybuf, 71) != 71) { sc_debug(card->ctx," Unable to read 3des key for general_external_authenticate\n"); r = SC_ERROR_WRONG_LENGTH; goto err; } keybuf[23] = '\0'; keybuf[47] = '\0'; keybuf[71] = '\0'; outlen = 8; r = sc_hex_to_bin(keybuf, key, &outlen); if (r) goto err; outlen = 8; r = sc_hex_to_bin(keybuf+24, key+8, &outlen); if (r) goto err; outlen = 8; r = sc_hex_to_bin(keybuf+48, key+16, &outlen); if (r) goto err; err: if (f >=0) close(f); SC_FUNC_RETURN(card->ctx, 1, r); } /* * will only deal with 3des for now * assumptions include: * size of encrypted data is same as unencrypted * challenges, nonces etc from card are less then 114 (keeps tags simple) */ static int piv_general_mutual_authenticate(sc_card_t *card, unsigned int key_ref, unsigned int alg_id) { int r; int N; int locked = 0, outl, outl2; u8 *rbuf = NULL; size_t rbuflen; u8 nonce[8] = {0xDE, 0xE0, 0xDE, 0xE1, 0xDE, 0xE2, 0xDE, 0xE3}; u8 sbuf[255], key[24]; u8 *p, *q; EVP_CIPHER_CTX ctx; const EVP_CIPHER *cipher; SC_FUNC_CALLED(card->ctx,1); EVP_CIPHER_CTX_init(&ctx); switch (alg_id) { case 1: cipher=EVP_des_ede3_ecb(); break; case 2: cipher=EVP_des_ede3_cbc(); break; case 3: cipher=EVP_des_ede3_ecb(); break; case 4: cipher=EVP_des_ede3_cbc(); break; default: cipher=EVP_des_ede3_ecb(); break; } r = piv_get_3des_key(card, key); if (r != SC_SUCCESS) goto err; r = sc_lock(card); if (r != SC_SUCCESS) goto err; locked = 1; p = sbuf; q = rbuf; *p++ = 0x7C; *p++ = 0x02; *p++ = 0x80; *p++ = 0x00; /* get the encrypted nonce */ r = piv_general_io(card, 0x87, alg_id, key_ref, sbuf, p - sbuf, &rbuf, &rbuflen); if (r < 0) goto err; q = rbuf; if ( (*q++ != 0x7C) || (*q++ != rbuflen - 2) || (*q++ != 0x80) || (*q++ != rbuflen - 4)) { r = SC_ERROR_INVALID_DATA; goto err; } N = *(rbuf + 3); /* assuming N + sizeof(nonce) + 6 < 128 */ /* prepare the response */ p = sbuf; *p++ = 0x7c; *p++ = N + sizeof(nonce)+ 4; *p++ = 0x80; *p++ = (u8)N; /* decrypt the data from the card */ if (!EVP_DecryptInit(&ctx, cipher, key, NULL)) { /* may fail if des parity of key is wrong. depends on OpenSSL options */ r = SC_ERROR_INTERNAL; goto err; } EVP_CIPHER_CTX_set_padding(&ctx,0); if (!EVP_DecryptUpdate(&ctx, p, &outl, q, N)) { r = SC_ERROR_INTERNAL; goto err; } if(!EVP_DecryptFinal(&ctx, p+outl, &outl2)) { r = SC_ERROR_INTERNAL; goto err; } if (outl+outl2 != N) { r = SC_ERROR_INTERNAL; goto err; } p += N; *p++ = 0x81; *p++ = sizeof(nonce); memcpy(p, &nonce, sizeof(nonce)); /* we use a fixed nonce for now */ p += sizeof(nonce); free(rbuf); rbuf = NULL; r = piv_general_io(card, 0x87, alg_id, key_ref, sbuf, p - sbuf, &rbuf, &rbuflen); if (r < 0) goto err; q = rbuf; if ( (*q++ != 0x7C) || (*q++ != rbuflen - 2) || ((*q++ | 0x02) != 0x82) /* SP800-73 not clear if 80 or 82 */ || (*q++ != rbuflen - 4)) { r = SC_ERROR_INVALID_DATA; goto err; } N = *(rbuf + 3); p = sbuf; EVP_CIPHER_CTX_cleanup(&ctx); EVP_CIPHER_CTX_init(&ctx); if (!EVP_DecryptInit(&ctx, cipher, key, NULL)) { r = SC_ERROR_INTERNAL; goto err; } EVP_CIPHER_CTX_set_padding(&ctx,0); if (!EVP_DecryptUpdate(&ctx, p, &outl, q, N)) { r = SC_ERROR_INTERNAL; goto err; } if(!EVP_DecryptFinal(&ctx, p+outl, &outl2)) { r = SC_ERROR_INTERNAL; goto err; } if (outl+outl2 != sizeof(nonce) || memcmp(nonce, p, sizeof(nonce)) != 0) { sc_debug(card->ctx, "mutual authentication failed, card returned wrong value"); r = SC_ERROR_DECRYPT_FAILED; goto err; } r = SC_SUCCESS; err: EVP_CIPHER_CTX_cleanup(&ctx); if (locked) sc_unlock(card); if (rbuf) free(rbuf); SC_FUNC_RETURN(card->ctx, 1, r); } static int piv_general_external_authenticate(sc_card_t *card, unsigned int key_ref, unsigned int alg_id) { /* unused: piv_private_data_t * priv = PIV_DATA(card); */ int r, outl, outl2; int N; int locked = 0; u8 *rbuf = NULL; size_t rbuflen; u8 sbuf[255], key[24]; u8 *p, *q; EVP_CIPHER_CTX ctx; const EVP_CIPHER *cipher; SC_FUNC_CALLED(card->ctx,1); EVP_CIPHER_CTX_init(&ctx); switch (alg_id) { case 1: cipher=EVP_des_ede3_ecb(); break; case 2: cipher=EVP_des_ede3_cbc(); break; case 3: cipher=EVP_des_ede3_ecb(); break; case 4: cipher=EVP_des_ede3_cbc(); break; default: cipher=EVP_des_ede3_ecb(); break; } r = piv_get_3des_key(card, key); if (r != SC_SUCCESS) goto err; r = sc_lock(card); if (r != SC_SUCCESS) goto err; locked = 1; p = sbuf; q = rbuf; *p++ = 0x7C; *p++ = 0x02; *p++ = 0x81; *p++ = 0x00; /* get a challenge */ r = piv_general_io(card, 0x87, 0x00, 0x00, sbuf, p - sbuf, &rbuf, &rbuflen); if (r < 0) goto err; q = rbuf; if ( (*q++ != 0x7C) || (*q++ != rbuflen - 2) || (*q++ != 0x81) || (*q++ != rbuflen - 4)) { r = SC_ERROR_INVALID_DATA; goto err; } /* assuming challenge and response are same size i.e. des3 */ p = sbuf; *p++ = 0x7c; *p++ = *(rbuf + 1); *p++ = 0x82; *p++ = *(rbuf + 3); N = *(rbuf + 3); /* assuming 2 * N + 6 < 128 */ if (!EVP_EncryptInit(&ctx, cipher, key, NULL)) { r = SC_ERROR_INTERNAL; goto err; } EVP_CIPHER_CTX_set_padding(&ctx,0); if (!EVP_EncryptUpdate(&ctx, p, &outl, q, N)) { r = SC_ERROR_INTERNAL; goto err; } if(!EVP_EncryptFinal(&ctx, p+outl, &outl2)) { r = SC_ERROR_INTERNAL; goto err; } if (outl+outl2 != N) { r = SC_ERROR_INTERNAL; goto err; } p += N; r = piv_general_io(card, 0x87, alg_id, key_ref, sbuf, p - sbuf, NULL, NULL); err: if (locked) sc_unlock(card); EVP_CIPHER_CTX_cleanup(&ctx); sc_mem_clear(key, sizeof(key)); if (rbuf) free(rbuf); SC_FUNC_RETURN(card->ctx, 1, r); } static int piv_get_serial_nr_from_CHUI(sc_card_t* card, sc_serial_number_t* serial) { int r; int i; u8 gbits; u8 *rbuf = NULL; u8 *body, *fascn, *guid; size_t rbuflen = 0, bodylen, fascnlen, guidlen; u8 temp[2000]; size_t templen = sizeof(temp); SC_FUNC_CALLED(card->ctx, 1); /* ensure we've got the PIV selected, and nothing else is in process */ /* This fixes several problems due to previous incomplete APDUs during card detection */ /* Note: We need the temp because (some?) Oberthur cards don't like selecting an applet without response data */ /* 800-73-3 part1 draft, and CIO Council docs imply for PIV Compatible card * The FASC-N Agency code should be 9999 and there should be a GUID * based on RFC 4122. RIf so and the GUID is not all 0's * we will use the GUID as the serial number. */ piv_select_aid(card, piv_aids[0].value, piv_aids[0].len_short, temp, &templen); r = piv_get_cached_data(card, PIV_OBJ_CHUI, &rbuf, &rbuflen); SC_TEST_RET(card->ctx, r, "Failure retrieving CHUI"); r = SC_ERROR_INTERNAL; if (rbuflen != 0) { body = (u8 *)sc_asn1_find_tag(card->ctx, rbuf, rbuflen, 0x53, &bodylen); /* Pass the outer wrapper asn1 */ if (body != NULL && bodylen != 0) { fascn = (u8 *)sc_asn1_find_tag(card->ctx, body, bodylen, 0x30, &fascnlen); /* Find the FASC-N data */ guid = (u8 *)sc_asn1_find_tag(card->ctx, body, bodylen, 0x34, &guidlen); gbits = 0; /* if guid is valid, gbits will not be zero */ if (guid && guidlen == 16) { for (i = 0; i < 16; i++) { gbits = gbits | guid[i]; /* if all are zero, gbits will be zero */ } } sc_debug(card->ctx,"fascn=%p,fascnlen=%d,guid=%p,guidlen=%d,gbits=%2.2x\n", fascn, fascnlen, guid, guidlen, gbits); if (fascn && fascnlen == 25) { /* test if guid and the fascn starts with ;9999 (in ISO 4bit + partiy code) */ if (!(gbits && fascn[0] == 0xD4 && fascn[1] == 0xE7 && fascn[2] == 0x39 && (fascn[3] | 0x7F) == 0xFF)) { serial->len = fascnlen < SC_MAX_SERIALNR ? fascnlen : SC_MAX_SERIALNR; memcpy (serial->value, fascn, serial->len); r = SC_SUCCESS; gbits = 0; /* set to skip using guid below */ } } if (guid && gbits) { serial->len = guidlen < SC_MAX_SERIALNR ? guidlen : SC_MAX_SERIALNR; memcpy (serial->value, guid, serial->len); r = SC_SUCCESS; } } } SC_FUNC_RETURN(card->ctx, 1, r); } static int piv_card_ctl(sc_card_t *card, unsigned long cmd, void *ptr) { u8 * opts; /* A or M, key_ref, alg_id */ opts = (u8 *)ptr; switch(cmd) { case SC_CARDCTL_LIFECYCLE_SET: switch (*opts) { case 'A': return piv_general_external_authenticate(card, *(opts+1), *(opts+2)); break; case'M': return piv_general_mutual_authenticate(card, *(opts+1), *(opts+2)); break; } break; case SC_CARDCTL_CRYPTOFLEX_GENERATE_KEY: return piv_generate_key(card, (struct sc_cardctl_cryptoflex_genkey_info *) ptr); break; case SC_CARDCTL_GET_SERIALNR: return piv_get_serial_nr_from_CHUI(card, (sc_serial_number_t *) ptr); break; } return SC_ERROR_NOT_SUPPORTED; } static int piv_get_challenge(sc_card_t *card, u8 *rnd, size_t len) { u8 sbuf[16]; u8 *rbuf = NULL; size_t rbuflen = 0; u8 *p, *q; int r; SC_FUNC_CALLED(card->ctx,1); sc_debug(card->ctx,"challenge len=%d",len); sc_lock(card); p = sbuf; *p++ = 0x7c; *p++ = 0x02; *p++ = 0x81; *p++ = 0x00; /* assuming 8 byte response ? */ /* should take what the card returns */ while (len > 0) { size_t n = len > 8 ? 8 : len; r = piv_general_io(card, 0x87, 0x00, 0x00, sbuf, p - sbuf, &rbuf, &rbuflen); if (r < 0) { sc_unlock(card); SC_FUNC_RETURN(card->ctx, 1, r); } q = rbuf; if ( (*q++ != 0x7C) || (*q++ != rbuflen - 2) || (*q++ != 0x81) || (*q++ != rbuflen - 4)) { r = SC_ERROR_INVALID_DATA; sc_unlock(card); SC_FUNC_RETURN(card->ctx, 1, r); } memcpy(rnd, q, n); len -= n; rnd += n; free(rbuf); rbuf = NULL; } sc_unlock(card); SC_FUNC_RETURN(card->ctx, 1, 0); } static int piv_set_security_env(sc_card_t *card, const sc_security_env_t *env, int se_num) { piv_private_data_t * priv = PIV_DATA(card); SC_FUNC_CALLED(card->ctx,1); sc_debug(card->ctx,"flags=%08x op=%d alg=%d algf=%08x algr=%08x kr0=%02x, krfl=%d\n", env->flags, env->operation, env->algorithm, env->algorithm_flags, env->algorithm_ref, env->key_ref[0], env->key_ref_len); if (env->algorithm == SC_ALGORITHM_RSA) priv->alg_id = 0x06; /* Say it is RSA, set 5, 6, 7 later */ else SC_FUNC_RETURN(card->ctx, 2, SC_ERROR_NO_CARD_SUPPORT); priv->key_ref = env->key_ref[0]; SC_FUNC_RETURN(card->ctx, 2, 0); } static int piv_restore_security_env(sc_card_t *card, int se_num) { SC_FUNC_CALLED(card->ctx,1); SC_FUNC_RETURN(card->ctx, 1, 0); } static int piv_validate_general_authentication(sc_card_t *card, const u8 * data, size_t datalen, u8 * out, size_t outlen) { piv_private_data_t * priv = PIV_DATA(card); int r; u8 *p; u8 *tag; size_t taglen; u8 *body; size_t bodylen; unsigned int real_alg_id; u8 sbuf[4096]; /* needs work. for 3072 keys, needs 384+10 or so */ u8 *rbuf = NULL; size_t rbuflen; SC_FUNC_CALLED(card->ctx,1); /* should assume large send data */ p = sbuf; put_tag_and_len(0x7c, (2 + put_tag_and_len(0, datalen, NULL)) , &p); put_tag_and_len(0x82, 0, &p); put_tag_and_len(0x81, datalen, &p); memcpy(p, data, datalen); p += datalen; /* * alg_id=06 is a place holder for all RSA keys. * Derive the real alg_id based on the size of the * the data, as we are always using raw mode. * Non RSA keys needs some work in thia area. */ real_alg_id = priv->alg_id; if (priv->alg_id == 0x06) { switch (datalen) { case 128: real_alg_id = 0x06; break; case 256: real_alg_id = 0x07; break; case 384: real_alg_id = 0x05; break; default: SC_FUNC_RETURN(card->ctx, 2, SC_ERROR_NO_CARD_SUPPORT); } } r = piv_general_io(card, 0x87, real_alg_id, priv->key_ref, sbuf, p - sbuf, &rbuf, &rbuflen); if ( r >= 0) { body = (u8 *) sc_asn1_find_tag(card->ctx, rbuf, rbuflen, 0x7c, &bodylen); if (body) { tag = (u8 *) sc_asn1_find_tag(card->ctx, body, bodylen, 0x82, &taglen); if (tag) { memcpy(out, tag, taglen); r = taglen; } } else r = SC_ERROR_INVALID_DATA; } if (rbuf) free(rbuf); SC_FUNC_RETURN(card->ctx, 1, r); } static int piv_compute_signature(sc_card_t *card, const u8 * data, size_t datalen, u8 * out, size_t outlen) { SC_FUNC_CALLED(card->ctx,4); SC_FUNC_RETURN(card->ctx, 4, piv_validate_general_authentication(card, data, datalen, out, outlen)); } static int piv_decipher(sc_card_t *card, const u8 * data, size_t datalen, u8 * out, size_t outlen) { SC_FUNC_CALLED(card->ctx,4); SC_FUNC_RETURN(card->ctx, 4, piv_validate_general_authentication(card, data, datalen, out, outlen)); } static int piv_find_obj_by_containerid(sc_card_t *card, const u8 * str) { int i; SC_FUNC_CALLED(card->ctx,4); sc_debug(card->ctx, "str=0x%02X%02X\n", str[0], str[1]); for (i = 0; piv_objects[i].enumtag < PIV_OBJ_LAST_ENUM; i++) { if ( str[0] == piv_objects[i].containerid[0] && str[1] == piv_objects[i].containerid[1]) SC_FUNC_RETURN(card->ctx, 4, i); } SC_FUNC_RETURN(card->ctx, 4, -1); } /* * the PIV-II does not always support files, but we will simulate * files and reading/writing using get/put_data * The path is the containerID number * We can use this to determine the type of data requested, like a cert * or pub key. * We only support write from the piv_tool with file_out==NULL * All other requests should be to read. * Only if file_out != null, will we read to get length. */ static int piv_select_file(sc_card_t *card, const sc_path_t *in_path, sc_file_t **file_out) { piv_private_data_t * priv = PIV_DATA(card); int r; int i; const u8 *path; int pathlen; sc_file_t *file = NULL; u8 * rbuf = NULL; size_t rbuflen = 0; SC_FUNC_CALLED(card->ctx,1); path = in_path->value; pathlen = in_path->len; /* only support single EF in current application */ if (pathlen > 2 && memcmp(path, "\x3F\x00", 2) == 0) { path += 2; pathlen -= 2; } i = piv_find_obj_by_containerid(card, path); if (i < 0) SC_FUNC_RETURN(card->ctx, 1, SC_ERROR_FILE_NOT_FOUND); /* * pkcs15 will use a 2 byte path or a 4 byte path * with cece added to path to request only the cert from the cert obj * PIV "Container ID" is used as the path, and are two bytes long */ priv->return_only_cert = (pathlen == 4 && path[2] == 0xce && path[3] == 0xce); priv->selected_obj = i; priv->rwb_state = -1; /* make it look like the file was found. */ /* We don't want to read it now unless we need the length */ if (file_out) { /* we need to read it now, to get length into cache */ r = piv_get_cached_data(card, i, &rbuf, &rbuflen); if (r < 0) SC_FUNC_RETURN(card->ctx, 1, SC_ERROR_FILE_NOT_FOUND); /* get the cert or the pub key out and into the cache too */ if (priv->return_only_cert || piv_objects[i].flags & PIV_OBJECT_TYPE_PUBKEY) { r = piv_cache_internal_data(card, i); if (r < 0) SC_FUNC_RETURN(card->ctx, 1, r); } file = sc_file_new(); if (file == NULL) SC_FUNC_RETURN(card->ctx, 0, SC_ERROR_OUT_OF_MEMORY); file->path = *in_path; /* this could be like the FCI */ file->type = SC_FILE_TYPE_DF; file->shareable = 0; file->ef_structure = 0; if (priv->return_only_cert) file->size = priv->obj_cache[i].internal_obj_len; else file->size = priv->obj_cache[i].obj_len; file->id = (piv_objects[i].containerid[0]<<8) + piv_objects[i].containerid[1]; *file_out = file; } SC_FUNC_RETURN(card->ctx, 1, 0); } static int piv_finish(sc_card_t *card) { piv_private_data_t * priv = PIV_DATA(card); int i; SC_FUNC_CALLED(card->ctx,1); if (priv) { if (priv->aid_file) sc_file_free(priv->aid_file); if (priv->w_buf) free(priv->w_buf); for (i = 0; i < PIV_OBJ_LAST_ENUM - 1; i++) { sc_debug(card->ctx,"DEE freeing #%d, %p:%d %p:%d", i, priv->obj_cache[i].obj_data, priv->obj_cache[i].obj_len, priv->obj_cache[i].internal_obj_data, priv->obj_cache[i].internal_obj_len); if (priv->obj_cache[i].obj_data) free(priv->obj_cache[i].obj_data); if (priv->obj_cache[i].internal_obj_data) free(priv->obj_cache[i].internal_obj_data); } free(priv); } /* TODO temp see piv_init */ return 0; } static int piv_match_card(sc_card_t *card) { int i; sc_file_t aidfile; SC_FUNC_CALLED(card->ctx,1); /* Since we send an APDU, the card's logout function may be called... * however it may be in dirty memory */ card->ops->logout = NULL; /* Detect by selecting applet */ i = !(piv_find_aid(card, &aidfile)); return i; /* never match */ } static int piv_init(sc_card_t *card) { int r; unsigned long flags; piv_private_data_t *priv; SC_FUNC_CALLED(card->ctx,1); priv = (piv_private_data_t *) calloc(1, sizeof(piv_private_data_t)); if (!priv) SC_FUNC_RETURN(card->ctx, 1, SC_ERROR_OUT_OF_MEMORY); priv->aid_file = sc_file_new(); priv->selected_obj = -1; /* priv->max_recv_size = 256; */ /* priv->max_recv_size = card->max_recv_size; */ /* priv->max_send_size = card->max_send_size; */ sc_debug(card->ctx, "Max send = %d recv = %d\n", card->max_send_size, card->max_recv_size); card->drv_data = priv; card->cla = 0x00; card->name = "PIV-II card"; r = piv_find_aid(card, priv->aid_file); if (r < 0) { sc_debug(card->ctx, "Failed to initialize %s\n", card->name); SC_FUNC_RETURN(card->ctx, 1, r); } priv->enumtag = piv_aids[r].enumtag; card->type = piv_aids[r].enumtag; flags = SC_ALGORITHM_RSA_RAW | SC_ALGORITHM_ONBOARD_KEY_GEN; _sc_card_add_rsa_alg(card, 1024, flags, 0); /* manditory */ _sc_card_add_rsa_alg(card, 2048, flags, 0); /* optional */ _sc_card_add_rsa_alg(card, 3072, flags, 0); /* optional */ card->caps |= SC_CARD_CAP_RNG; if (r > 0) r = 0; SC_FUNC_RETURN(card->ctx, 1, r); } static int piv_pin_cmd(sc_card_t *card, struct sc_pin_cmd_data *data, int *tries_left) { /* Extra validation of (new) PIN during a PIN change request, to * ensure it's not outside the FIPS 201 4.1.6.1 (numeric only) and * FIPS 140-2 (6 character minimum) requirements. */ struct sc_card_driver *iso_drv = sc_get_iso7816_driver(); if (data->cmd == SC_PIN_CMD_CHANGE) { int i = 0; if (data->pin2.len < 6) { return SC_ERROR_INVALID_PIN_LENGTH; } for(i=0; i < data->pin2.len; ++i) { if (!isdigit(data->pin2.data[i])) { return SC_ERROR_INVALID_DATA; } } } return iso_drv->ops->pin_cmd(card, data, tries_left); } static struct sc_card_driver * sc_get_driver(void) { struct sc_card_driver *iso_drv = sc_get_iso7816_driver(); piv_ops = *iso_drv->ops; piv_ops.match_card = piv_match_card; piv_ops.init = piv_init; piv_ops.finish = piv_finish; piv_ops.select_file = piv_select_file; /* must use get/put, could emulate? */ piv_ops.get_challenge = piv_get_challenge; piv_ops.read_binary = piv_read_binary; piv_ops.write_binary = piv_write_binary; piv_ops.set_security_env = piv_set_security_env; piv_ops.restore_security_env = piv_restore_security_env; piv_ops.compute_signature = piv_compute_signature; piv_ops.decipher = piv_decipher; piv_ops.card_ctl = piv_card_ctl; piv_ops.pin_cmd = piv_pin_cmd; return &piv_drv; } #if 1 struct sc_card_driver * sc_get_piv_driver(void) { return sc_get_driver(); } #endif #endif /* ENABLE_OPENSSL */