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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright IBM Corp. 2019
- * Author(s): Harald Freudenberger <freude@linux.ibm.com>
- *
- * Collection of EP11 misc functions used by zcrypt and pkey
- */
- #define KMSG_COMPONENT "zcrypt"
- #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
- #include <linux/init.h>
- #include <linux/module.h>
- #include <linux/slab.h>
- #include <linux/random.h>
- #include <asm/zcrypt.h>
- #include <asm/pkey.h>
- #include <crypto/aes.h>
- #include "ap_bus.h"
- #include "zcrypt_api.h"
- #include "zcrypt_debug.h"
- #include "zcrypt_msgtype6.h"
- #include "zcrypt_ep11misc.h"
- #include "zcrypt_ccamisc.h"
- #define DEBUG_DBG(...) ZCRYPT_DBF(DBF_DEBUG, ##__VA_ARGS__)
- #define DEBUG_INFO(...) ZCRYPT_DBF(DBF_INFO, ##__VA_ARGS__)
- #define DEBUG_WARN(...) ZCRYPT_DBF(DBF_WARN, ##__VA_ARGS__)
- #define DEBUG_ERR(...) ZCRYPT_DBF(DBF_ERR, ##__VA_ARGS__)
- /* default iv used here */
- static const u8 def_iv[16] = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
- 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff };
- /* ep11 card info cache */
- struct card_list_entry {
- struct list_head list;
- u16 cardnr;
- struct ep11_card_info info;
- };
- static LIST_HEAD(card_list);
- static DEFINE_SPINLOCK(card_list_lock);
- static int card_cache_fetch(u16 cardnr, struct ep11_card_info *ci)
- {
- int rc = -ENOENT;
- struct card_list_entry *ptr;
- spin_lock_bh(&card_list_lock);
- list_for_each_entry(ptr, &card_list, list) {
- if (ptr->cardnr == cardnr) {
- memcpy(ci, &ptr->info, sizeof(*ci));
- rc = 0;
- break;
- }
- }
- spin_unlock_bh(&card_list_lock);
- return rc;
- }
- static void card_cache_update(u16 cardnr, const struct ep11_card_info *ci)
- {
- int found = 0;
- struct card_list_entry *ptr;
- spin_lock_bh(&card_list_lock);
- list_for_each_entry(ptr, &card_list, list) {
- if (ptr->cardnr == cardnr) {
- memcpy(&ptr->info, ci, sizeof(*ci));
- found = 1;
- break;
- }
- }
- if (!found) {
- ptr = kmalloc(sizeof(*ptr), GFP_ATOMIC);
- if (!ptr) {
- spin_unlock_bh(&card_list_lock);
- return;
- }
- ptr->cardnr = cardnr;
- memcpy(&ptr->info, ci, sizeof(*ci));
- list_add(&ptr->list, &card_list);
- }
- spin_unlock_bh(&card_list_lock);
- }
- static void card_cache_scrub(u16 cardnr)
- {
- struct card_list_entry *ptr;
- spin_lock_bh(&card_list_lock);
- list_for_each_entry(ptr, &card_list, list) {
- if (ptr->cardnr == cardnr) {
- list_del(&ptr->list);
- kfree(ptr);
- break;
- }
- }
- spin_unlock_bh(&card_list_lock);
- }
- static void __exit card_cache_free(void)
- {
- struct card_list_entry *ptr, *pnext;
- spin_lock_bh(&card_list_lock);
- list_for_each_entry_safe(ptr, pnext, &card_list, list) {
- list_del(&ptr->list);
- kfree(ptr);
- }
- spin_unlock_bh(&card_list_lock);
- }
- /*
- * Simple check if the key blob is a valid EP11 AES key blob with header.
- */
- int ep11_check_aes_key_with_hdr(debug_info_t *dbg, int dbflvl,
- const u8 *key, size_t keylen, int checkcpacfexp)
- {
- struct ep11kblob_header *hdr = (struct ep11kblob_header *) key;
- struct ep11keyblob *kb = (struct ep11keyblob *) (key + sizeof(*hdr));
- #define DBF(...) debug_sprintf_event(dbg, dbflvl, ##__VA_ARGS__)
- if (keylen < sizeof(*hdr) + sizeof(*kb)) {
- DBF("%s key check failed, keylen %zu < %zu\n",
- __func__, keylen, sizeof(*hdr) + sizeof(*kb));
- return -EINVAL;
- }
- if (hdr->type != TOKTYPE_NON_CCA) {
- if (dbg)
- DBF("%s key check failed, type 0x%02x != 0x%02x\n",
- __func__, (int) hdr->type, TOKTYPE_NON_CCA);
- return -EINVAL;
- }
- if (hdr->hver != 0x00) {
- if (dbg)
- DBF("%s key check failed, header version 0x%02x != 0x00\n",
- __func__, (int) hdr->hver);
- return -EINVAL;
- }
- if (hdr->version != TOKVER_EP11_AES_WITH_HEADER) {
- if (dbg)
- DBF("%s key check failed, version 0x%02x != 0x%02x\n",
- __func__, (int) hdr->version, TOKVER_EP11_AES_WITH_HEADER);
- return -EINVAL;
- }
- if (hdr->len > keylen) {
- if (dbg)
- DBF("%s key check failed, header len %d keylen %zu mismatch\n",
- __func__, (int) hdr->len, keylen);
- return -EINVAL;
- }
- if (hdr->len < sizeof(*hdr) + sizeof(*kb)) {
- if (dbg)
- DBF("%s key check failed, header len %d < %zu\n",
- __func__, (int) hdr->len, sizeof(*hdr) + sizeof(*kb));
- return -EINVAL;
- }
- if (kb->version != EP11_STRUCT_MAGIC) {
- if (dbg)
- DBF("%s key check failed, blob magic 0x%04x != 0x%04x\n",
- __func__, (int) kb->version, EP11_STRUCT_MAGIC);
- return -EINVAL;
- }
- if (checkcpacfexp && !(kb->attr & EP11_BLOB_PKEY_EXTRACTABLE)) {
- if (dbg)
- DBF("%s key check failed, PKEY_EXTRACTABLE is off\n",
- __func__);
- return -EINVAL;
- }
- #undef DBF
- return 0;
- }
- EXPORT_SYMBOL(ep11_check_aes_key_with_hdr);
- /*
- * Simple check if the key blob is a valid EP11 ECC key blob with header.
- */
- int ep11_check_ecc_key_with_hdr(debug_info_t *dbg, int dbflvl,
- const u8 *key, size_t keylen, int checkcpacfexp)
- {
- struct ep11kblob_header *hdr = (struct ep11kblob_header *) key;
- struct ep11keyblob *kb = (struct ep11keyblob *) (key + sizeof(*hdr));
- #define DBF(...) debug_sprintf_event(dbg, dbflvl, ##__VA_ARGS__)
- if (keylen < sizeof(*hdr) + sizeof(*kb)) {
- DBF("%s key check failed, keylen %zu < %zu\n",
- __func__, keylen, sizeof(*hdr) + sizeof(*kb));
- return -EINVAL;
- }
- if (hdr->type != TOKTYPE_NON_CCA) {
- if (dbg)
- DBF("%s key check failed, type 0x%02x != 0x%02x\n",
- __func__, (int) hdr->type, TOKTYPE_NON_CCA);
- return -EINVAL;
- }
- if (hdr->hver != 0x00) {
- if (dbg)
- DBF("%s key check failed, header version 0x%02x != 0x00\n",
- __func__, (int) hdr->hver);
- return -EINVAL;
- }
- if (hdr->version != TOKVER_EP11_ECC_WITH_HEADER) {
- if (dbg)
- DBF("%s key check failed, version 0x%02x != 0x%02x\n",
- __func__, (int) hdr->version, TOKVER_EP11_ECC_WITH_HEADER);
- return -EINVAL;
- }
- if (hdr->len > keylen) {
- if (dbg)
- DBF("%s key check failed, header len %d keylen %zu mismatch\n",
- __func__, (int) hdr->len, keylen);
- return -EINVAL;
- }
- if (hdr->len < sizeof(*hdr) + sizeof(*kb)) {
- if (dbg)
- DBF("%s key check failed, header len %d < %zu\n",
- __func__, (int) hdr->len, sizeof(*hdr) + sizeof(*kb));
- return -EINVAL;
- }
- if (kb->version != EP11_STRUCT_MAGIC) {
- if (dbg)
- DBF("%s key check failed, blob magic 0x%04x != 0x%04x\n",
- __func__, (int) kb->version, EP11_STRUCT_MAGIC);
- return -EINVAL;
- }
- if (checkcpacfexp && !(kb->attr & EP11_BLOB_PKEY_EXTRACTABLE)) {
- if (dbg)
- DBF("%s key check failed, PKEY_EXTRACTABLE is off\n",
- __func__);
- return -EINVAL;
- }
- #undef DBF
- return 0;
- }
- EXPORT_SYMBOL(ep11_check_ecc_key_with_hdr);
- /*
- * Simple check if the key blob is a valid EP11 AES key blob with
- * the header in the session field (old style EP11 AES key).
- */
- int ep11_check_aes_key(debug_info_t *dbg, int dbflvl,
- const u8 *key, size_t keylen, int checkcpacfexp)
- {
- struct ep11keyblob *kb = (struct ep11keyblob *) key;
- #define DBF(...) debug_sprintf_event(dbg, dbflvl, ##__VA_ARGS__)
- if (keylen < sizeof(*kb)) {
- DBF("%s key check failed, keylen %zu < %zu\n",
- __func__, keylen, sizeof(*kb));
- return -EINVAL;
- }
- if (kb->head.type != TOKTYPE_NON_CCA) {
- if (dbg)
- DBF("%s key check failed, type 0x%02x != 0x%02x\n",
- __func__, (int) kb->head.type, TOKTYPE_NON_CCA);
- return -EINVAL;
- }
- if (kb->head.version != TOKVER_EP11_AES) {
- if (dbg)
- DBF("%s key check failed, version 0x%02x != 0x%02x\n",
- __func__, (int) kb->head.version, TOKVER_EP11_AES);
- return -EINVAL;
- }
- if (kb->head.len > keylen) {
- if (dbg)
- DBF("%s key check failed, header len %d keylen %zu mismatch\n",
- __func__, (int) kb->head.len, keylen);
- return -EINVAL;
- }
- if (kb->head.len < sizeof(*kb)) {
- if (dbg)
- DBF("%s key check failed, header len %d < %zu\n",
- __func__, (int) kb->head.len, sizeof(*kb));
- return -EINVAL;
- }
- if (kb->version != EP11_STRUCT_MAGIC) {
- if (dbg)
- DBF("%s key check failed, blob magic 0x%04x != 0x%04x\n",
- __func__, (int) kb->version, EP11_STRUCT_MAGIC);
- return -EINVAL;
- }
- if (checkcpacfexp && !(kb->attr & EP11_BLOB_PKEY_EXTRACTABLE)) {
- if (dbg)
- DBF("%s key check failed, PKEY_EXTRACTABLE is off\n",
- __func__);
- return -EINVAL;
- }
- #undef DBF
- return 0;
- }
- EXPORT_SYMBOL(ep11_check_aes_key);
- /*
- * Allocate and prepare ep11 cprb plus additional payload.
- */
- static inline struct ep11_cprb *alloc_cprb(size_t payload_len)
- {
- size_t len = sizeof(struct ep11_cprb) + payload_len;
- struct ep11_cprb *cprb;
- cprb = kzalloc(len, GFP_KERNEL);
- if (!cprb)
- return NULL;
- cprb->cprb_len = sizeof(struct ep11_cprb);
- cprb->cprb_ver_id = 0x04;
- memcpy(cprb->func_id, "T4", 2);
- cprb->ret_code = 0xFFFFFFFF;
- cprb->payload_len = payload_len;
- return cprb;
- }
- /*
- * Some helper functions related to ASN1 encoding.
- * Limited to length info <= 2 byte.
- */
- #define ASN1TAGLEN(x) (2 + (x) + ((x) > 127 ? 1 : 0) + ((x) > 255 ? 1 : 0))
- static int asn1tag_write(u8 *ptr, u8 tag, const u8 *pvalue, u16 valuelen)
- {
- ptr[0] = tag;
- if (valuelen > 255) {
- ptr[1] = 0x82;
- *((u16 *)(ptr + 2)) = valuelen;
- memcpy(ptr + 4, pvalue, valuelen);
- return 4 + valuelen;
- }
- if (valuelen > 127) {
- ptr[1] = 0x81;
- ptr[2] = (u8) valuelen;
- memcpy(ptr + 3, pvalue, valuelen);
- return 3 + valuelen;
- }
- ptr[1] = (u8) valuelen;
- memcpy(ptr + 2, pvalue, valuelen);
- return 2 + valuelen;
- }
- /* EP11 payload > 127 bytes starts with this struct */
- struct pl_head {
- u8 tag;
- u8 lenfmt;
- u16 len;
- u8 func_tag;
- u8 func_len;
- u32 func;
- u8 dom_tag;
- u8 dom_len;
- u32 dom;
- } __packed;
- /* prep ep11 payload head helper function */
- static inline void prep_head(struct pl_head *h,
- size_t pl_size, int api, int func)
- {
- h->tag = 0x30;
- h->lenfmt = 0x82;
- h->len = pl_size - 4;
- h->func_tag = 0x04;
- h->func_len = sizeof(u32);
- h->func = (api << 16) + func;
- h->dom_tag = 0x04;
- h->dom_len = sizeof(u32);
- }
- /* prep urb helper function */
- static inline void prep_urb(struct ep11_urb *u,
- struct ep11_target_dev *t, int nt,
- struct ep11_cprb *req, size_t req_len,
- struct ep11_cprb *rep, size_t rep_len)
- {
- u->targets = (u8 __user *) t;
- u->targets_num = nt;
- u->req = (u8 __user *) req;
- u->req_len = req_len;
- u->resp = (u8 __user *) rep;
- u->resp_len = rep_len;
- }
- /* Check ep11 reply payload, return 0 or suggested errno value. */
- static int check_reply_pl(const u8 *pl, const char *func)
- {
- int len;
- u32 ret;
- /* start tag */
- if (*pl++ != 0x30) {
- DEBUG_ERR("%s reply start tag mismatch\n", func);
- return -EIO;
- }
- /* payload length format */
- if (*pl < 127) {
- len = *pl;
- pl++;
- } else if (*pl == 0x81) {
- pl++;
- len = *pl;
- pl++;
- } else if (*pl == 0x82) {
- pl++;
- len = *((u16 *)pl);
- pl += 2;
- } else {
- DEBUG_ERR("%s reply start tag lenfmt mismatch 0x%02hhx\n",
- func, *pl);
- return -EIO;
- }
- /* len should cover at least 3 fields with 32 bit value each */
- if (len < 3 * 6) {
- DEBUG_ERR("%s reply length %d too small\n", func, len);
- return -EIO;
- }
- /* function tag, length and value */
- if (pl[0] != 0x04 || pl[1] != 0x04) {
- DEBUG_ERR("%s function tag or length mismatch\n", func);
- return -EIO;
- }
- pl += 6;
- /* dom tag, length and value */
- if (pl[0] != 0x04 || pl[1] != 0x04) {
- DEBUG_ERR("%s dom tag or length mismatch\n", func);
- return -EIO;
- }
- pl += 6;
- /* return value tag, length and value */
- if (pl[0] != 0x04 || pl[1] != 0x04) {
- DEBUG_ERR("%s return value tag or length mismatch\n", func);
- return -EIO;
- }
- pl += 2;
- ret = *((u32 *)pl);
- if (ret != 0) {
- DEBUG_ERR("%s return value 0x%04x != 0\n", func, ret);
- return -EIO;
- }
- return 0;
- }
- /*
- * Helper function which does an ep11 query with given query type.
- */
- static int ep11_query_info(u16 cardnr, u16 domain, u32 query_type,
- size_t buflen, u8 *buf)
- {
- struct ep11_info_req_pl {
- struct pl_head head;
- u8 query_type_tag;
- u8 query_type_len;
- u32 query_type;
- u8 query_subtype_tag;
- u8 query_subtype_len;
- u32 query_subtype;
- } __packed * req_pl;
- struct ep11_info_rep_pl {
- struct pl_head head;
- u8 rc_tag;
- u8 rc_len;
- u32 rc;
- u8 data_tag;
- u8 data_lenfmt;
- u16 data_len;
- } __packed * rep_pl;
- struct ep11_cprb *req = NULL, *rep = NULL;
- struct ep11_target_dev target;
- struct ep11_urb *urb = NULL;
- int api = 1, rc = -ENOMEM;
- /* request cprb and payload */
- req = alloc_cprb(sizeof(struct ep11_info_req_pl));
- if (!req)
- goto out;
- req_pl = (struct ep11_info_req_pl *) (((u8 *) req) + sizeof(*req));
- prep_head(&req_pl->head, sizeof(*req_pl), api, 38); /* get xcp info */
- req_pl->query_type_tag = 0x04;
- req_pl->query_type_len = sizeof(u32);
- req_pl->query_type = query_type;
- req_pl->query_subtype_tag = 0x04;
- req_pl->query_subtype_len = sizeof(u32);
- /* reply cprb and payload */
- rep = alloc_cprb(sizeof(struct ep11_info_rep_pl) + buflen);
- if (!rep)
- goto out;
- rep_pl = (struct ep11_info_rep_pl *) (((u8 *) rep) + sizeof(*rep));
- /* urb and target */
- urb = kmalloc(sizeof(struct ep11_urb), GFP_KERNEL);
- if (!urb)
- goto out;
- target.ap_id = cardnr;
- target.dom_id = domain;
- prep_urb(urb, &target, 1,
- req, sizeof(*req) + sizeof(*req_pl),
- rep, sizeof(*rep) + sizeof(*rep_pl) + buflen);
- rc = zcrypt_send_ep11_cprb(urb);
- if (rc) {
- DEBUG_ERR(
- "%s zcrypt_send_ep11_cprb(card=%d dom=%d) failed, rc=%d\n",
- __func__, (int) cardnr, (int) domain, rc);
- goto out;
- }
- rc = check_reply_pl((u8 *)rep_pl, __func__);
- if (rc)
- goto out;
- if (rep_pl->data_tag != 0x04 || rep_pl->data_lenfmt != 0x82) {
- DEBUG_ERR("%s unknown reply data format\n", __func__);
- rc = -EIO;
- goto out;
- }
- if (rep_pl->data_len > buflen) {
- DEBUG_ERR("%s mismatch between reply data len and buffer len\n",
- __func__);
- rc = -ENOSPC;
- goto out;
- }
- memcpy(buf, ((u8 *) rep_pl) + sizeof(*rep_pl), rep_pl->data_len);
- out:
- kfree(req);
- kfree(rep);
- kfree(urb);
- return rc;
- }
- /*
- * Provide information about an EP11 card.
- */
- int ep11_get_card_info(u16 card, struct ep11_card_info *info, int verify)
- {
- int rc;
- struct ep11_module_query_info {
- u32 API_ord_nr;
- u32 firmware_id;
- u8 FW_major_vers;
- u8 FW_minor_vers;
- u8 CSP_major_vers;
- u8 CSP_minor_vers;
- u8 fwid[32];
- u8 xcp_config_hash[32];
- u8 CSP_config_hash[32];
- u8 serial[16];
- u8 module_date_time[16];
- u64 op_mode;
- u32 PKCS11_flags;
- u32 ext_flags;
- u32 domains;
- u32 sym_state_bytes;
- u32 digest_state_bytes;
- u32 pin_blob_bytes;
- u32 SPKI_bytes;
- u32 priv_key_blob_bytes;
- u32 sym_blob_bytes;
- u32 max_payload_bytes;
- u32 CP_profile_bytes;
- u32 max_CP_index;
- } __packed * pmqi = NULL;
- rc = card_cache_fetch(card, info);
- if (rc || verify) {
- pmqi = kmalloc(sizeof(*pmqi), GFP_KERNEL);
- if (!pmqi)
- return -ENOMEM;
- rc = ep11_query_info(card, AUTOSEL_DOM,
- 0x01 /* module info query */,
- sizeof(*pmqi), (u8 *) pmqi);
- if (rc) {
- if (rc == -ENODEV)
- card_cache_scrub(card);
- goto out;
- }
- memset(info, 0, sizeof(*info));
- info->API_ord_nr = pmqi->API_ord_nr;
- info->FW_version =
- (pmqi->FW_major_vers << 8) + pmqi->FW_minor_vers;
- memcpy(info->serial, pmqi->serial, sizeof(info->serial));
- info->op_mode = pmqi->op_mode;
- card_cache_update(card, info);
- }
- out:
- kfree(pmqi);
- return rc;
- }
- EXPORT_SYMBOL(ep11_get_card_info);
- /*
- * Provide information about a domain within an EP11 card.
- */
- int ep11_get_domain_info(u16 card, u16 domain, struct ep11_domain_info *info)
- {
- int rc;
- struct ep11_domain_query_info {
- u32 dom_index;
- u8 cur_WK_VP[32];
- u8 new_WK_VP[32];
- u32 dom_flags;
- u64 op_mode;
- } __packed * p_dom_info;
- p_dom_info = kmalloc(sizeof(*p_dom_info), GFP_KERNEL);
- if (!p_dom_info)
- return -ENOMEM;
- rc = ep11_query_info(card, domain, 0x03 /* domain info query */,
- sizeof(*p_dom_info), (u8 *) p_dom_info);
- if (rc)
- goto out;
- memset(info, 0, sizeof(*info));
- info->cur_wk_state = '0';
- info->new_wk_state = '0';
- if (p_dom_info->dom_flags & 0x10 /* left imprint mode */) {
- if (p_dom_info->dom_flags & 0x02 /* cur wk valid */) {
- info->cur_wk_state = '1';
- memcpy(info->cur_wkvp, p_dom_info->cur_WK_VP, 32);
- }
- if (p_dom_info->dom_flags & 0x04 /* new wk present */
- || p_dom_info->dom_flags & 0x08 /* new wk committed */) {
- info->new_wk_state =
- p_dom_info->dom_flags & 0x08 ? '2' : '1';
- memcpy(info->new_wkvp, p_dom_info->new_WK_VP, 32);
- }
- }
- info->op_mode = p_dom_info->op_mode;
- out:
- kfree(p_dom_info);
- return rc;
- }
- EXPORT_SYMBOL(ep11_get_domain_info);
- /*
- * Default EP11 AES key generate attributes, used when no keygenflags given:
- * XCP_BLOB_ENCRYPT | XCP_BLOB_DECRYPT | XCP_BLOB_PROTKEY_EXTRACTABLE
- */
- #define KEY_ATTR_DEFAULTS 0x00200c00
- int ep11_genaeskey(u16 card, u16 domain, u32 keybitsize, u32 keygenflags,
- u8 *keybuf, size_t *keybufsize)
- {
- struct keygen_req_pl {
- struct pl_head head;
- u8 var_tag;
- u8 var_len;
- u32 var;
- u8 keybytes_tag;
- u8 keybytes_len;
- u32 keybytes;
- u8 mech_tag;
- u8 mech_len;
- u32 mech;
- u8 attr_tag;
- u8 attr_len;
- u32 attr_header;
- u32 attr_bool_mask;
- u32 attr_bool_bits;
- u32 attr_val_len_type;
- u32 attr_val_len_value;
- u8 pin_tag;
- u8 pin_len;
- } __packed * req_pl;
- struct keygen_rep_pl {
- struct pl_head head;
- u8 rc_tag;
- u8 rc_len;
- u32 rc;
- u8 data_tag;
- u8 data_lenfmt;
- u16 data_len;
- u8 data[512];
- } __packed * rep_pl;
- struct ep11_cprb *req = NULL, *rep = NULL;
- struct ep11_target_dev target;
- struct ep11_urb *urb = NULL;
- struct ep11keyblob *kb;
- int api, rc = -ENOMEM;
- switch (keybitsize) {
- case 128:
- case 192:
- case 256:
- break;
- default:
- DEBUG_ERR(
- "%s unknown/unsupported keybitsize %d\n",
- __func__, keybitsize);
- rc = -EINVAL;
- goto out;
- }
- /* request cprb and payload */
- req = alloc_cprb(sizeof(struct keygen_req_pl));
- if (!req)
- goto out;
- req_pl = (struct keygen_req_pl *) (((u8 *) req) + sizeof(*req));
- api = (!keygenflags || keygenflags & 0x00200000) ? 4 : 1;
- prep_head(&req_pl->head, sizeof(*req_pl), api, 21); /* GenerateKey */
- req_pl->var_tag = 0x04;
- req_pl->var_len = sizeof(u32);
- req_pl->keybytes_tag = 0x04;
- req_pl->keybytes_len = sizeof(u32);
- req_pl->keybytes = keybitsize / 8;
- req_pl->mech_tag = 0x04;
- req_pl->mech_len = sizeof(u32);
- req_pl->mech = 0x00001080; /* CKM_AES_KEY_GEN */
- req_pl->attr_tag = 0x04;
- req_pl->attr_len = 5 * sizeof(u32);
- req_pl->attr_header = 0x10010000;
- req_pl->attr_bool_mask = keygenflags ? keygenflags : KEY_ATTR_DEFAULTS;
- req_pl->attr_bool_bits = keygenflags ? keygenflags : KEY_ATTR_DEFAULTS;
- req_pl->attr_val_len_type = 0x00000161; /* CKA_VALUE_LEN */
- req_pl->attr_val_len_value = keybitsize / 8;
- req_pl->pin_tag = 0x04;
- /* reply cprb and payload */
- rep = alloc_cprb(sizeof(struct keygen_rep_pl));
- if (!rep)
- goto out;
- rep_pl = (struct keygen_rep_pl *) (((u8 *) rep) + sizeof(*rep));
- /* urb and target */
- urb = kmalloc(sizeof(struct ep11_urb), GFP_KERNEL);
- if (!urb)
- goto out;
- target.ap_id = card;
- target.dom_id = domain;
- prep_urb(urb, &target, 1,
- req, sizeof(*req) + sizeof(*req_pl),
- rep, sizeof(*rep) + sizeof(*rep_pl));
- rc = zcrypt_send_ep11_cprb(urb);
- if (rc) {
- DEBUG_ERR(
- "%s zcrypt_send_ep11_cprb(card=%d dom=%d) failed, rc=%d\n",
- __func__, (int) card, (int) domain, rc);
- goto out;
- }
- rc = check_reply_pl((u8 *)rep_pl, __func__);
- if (rc)
- goto out;
- if (rep_pl->data_tag != 0x04 || rep_pl->data_lenfmt != 0x82) {
- DEBUG_ERR("%s unknown reply data format\n", __func__);
- rc = -EIO;
- goto out;
- }
- if (rep_pl->data_len > *keybufsize) {
- DEBUG_ERR("%s mismatch reply data len / key buffer len\n",
- __func__);
- rc = -ENOSPC;
- goto out;
- }
- /* copy key blob and set header values */
- memcpy(keybuf, rep_pl->data, rep_pl->data_len);
- *keybufsize = rep_pl->data_len;
- kb = (struct ep11keyblob *) keybuf;
- kb->head.type = TOKTYPE_NON_CCA;
- kb->head.len = rep_pl->data_len;
- kb->head.version = TOKVER_EP11_AES;
- kb->head.keybitlen = keybitsize;
- out:
- kfree(req);
- kfree(rep);
- kfree(urb);
- return rc;
- }
- EXPORT_SYMBOL(ep11_genaeskey);
- static int ep11_cryptsingle(u16 card, u16 domain,
- u16 mode, u32 mech, const u8 *iv,
- const u8 *key, size_t keysize,
- const u8 *inbuf, size_t inbufsize,
- u8 *outbuf, size_t *outbufsize)
- {
- struct crypt_req_pl {
- struct pl_head head;
- u8 var_tag;
- u8 var_len;
- u32 var;
- u8 mech_tag;
- u8 mech_len;
- u32 mech;
- /*
- * maybe followed by iv data
- * followed by key tag + key blob
- * followed by plaintext tag + plaintext
- */
- } __packed * req_pl;
- struct crypt_rep_pl {
- struct pl_head head;
- u8 rc_tag;
- u8 rc_len;
- u32 rc;
- u8 data_tag;
- u8 data_lenfmt;
- /* data follows */
- } __packed * rep_pl;
- struct ep11_cprb *req = NULL, *rep = NULL;
- struct ep11_target_dev target;
- struct ep11_urb *urb = NULL;
- size_t req_pl_size, rep_pl_size;
- int n, api = 1, rc = -ENOMEM;
- u8 *p;
- /* the simple asn1 coding used has length limits */
- if (keysize > 0xFFFF || inbufsize > 0xFFFF)
- return -EINVAL;
- /* request cprb and payload */
- req_pl_size = sizeof(struct crypt_req_pl) + (iv ? 16 : 0)
- + ASN1TAGLEN(keysize) + ASN1TAGLEN(inbufsize);
- req = alloc_cprb(req_pl_size);
- if (!req)
- goto out;
- req_pl = (struct crypt_req_pl *) (((u8 *) req) + sizeof(*req));
- prep_head(&req_pl->head, req_pl_size, api, (mode ? 20 : 19));
- req_pl->var_tag = 0x04;
- req_pl->var_len = sizeof(u32);
- /* mech is mech + mech params (iv here) */
- req_pl->mech_tag = 0x04;
- req_pl->mech_len = sizeof(u32) + (iv ? 16 : 0);
- req_pl->mech = (mech ? mech : 0x00001085); /* CKM_AES_CBC_PAD */
- p = ((u8 *) req_pl) + sizeof(*req_pl);
- if (iv) {
- memcpy(p, iv, 16);
- p += 16;
- }
- /* key and input data */
- p += asn1tag_write(p, 0x04, key, keysize);
- p += asn1tag_write(p, 0x04, inbuf, inbufsize);
- /* reply cprb and payload, assume out data size <= in data size + 32 */
- rep_pl_size = sizeof(struct crypt_rep_pl) + ASN1TAGLEN(inbufsize + 32);
- rep = alloc_cprb(rep_pl_size);
- if (!rep)
- goto out;
- rep_pl = (struct crypt_rep_pl *) (((u8 *) rep) + sizeof(*rep));
- /* urb and target */
- urb = kmalloc(sizeof(struct ep11_urb), GFP_KERNEL);
- if (!urb)
- goto out;
- target.ap_id = card;
- target.dom_id = domain;
- prep_urb(urb, &target, 1,
- req, sizeof(*req) + req_pl_size,
- rep, sizeof(*rep) + rep_pl_size);
- rc = zcrypt_send_ep11_cprb(urb);
- if (rc) {
- DEBUG_ERR(
- "%s zcrypt_send_ep11_cprb(card=%d dom=%d) failed, rc=%d\n",
- __func__, (int) card, (int) domain, rc);
- goto out;
- }
- rc = check_reply_pl((u8 *)rep_pl, __func__);
- if (rc)
- goto out;
- if (rep_pl->data_tag != 0x04) {
- DEBUG_ERR("%s unknown reply data format\n", __func__);
- rc = -EIO;
- goto out;
- }
- p = ((u8 *) rep_pl) + sizeof(*rep_pl);
- if (rep_pl->data_lenfmt <= 127)
- n = rep_pl->data_lenfmt;
- else if (rep_pl->data_lenfmt == 0x81)
- n = *p++;
- else if (rep_pl->data_lenfmt == 0x82) {
- n = *((u16 *) p);
- p += 2;
- } else {
- DEBUG_ERR("%s unknown reply data length format 0x%02hhx\n",
- __func__, rep_pl->data_lenfmt);
- rc = -EIO;
- goto out;
- }
- if (n > *outbufsize) {
- DEBUG_ERR("%s mismatch reply data len %d / output buffer %zu\n",
- __func__, n, *outbufsize);
- rc = -ENOSPC;
- goto out;
- }
- memcpy(outbuf, p, n);
- *outbufsize = n;
- out:
- kfree(req);
- kfree(rep);
- kfree(urb);
- return rc;
- }
- static int ep11_unwrapkey(u16 card, u16 domain,
- const u8 *kek, size_t keksize,
- const u8 *enckey, size_t enckeysize,
- u32 mech, const u8 *iv,
- u32 keybitsize, u32 keygenflags,
- u8 *keybuf, size_t *keybufsize)
- {
- struct uw_req_pl {
- struct pl_head head;
- u8 attr_tag;
- u8 attr_len;
- u32 attr_header;
- u32 attr_bool_mask;
- u32 attr_bool_bits;
- u32 attr_key_type;
- u32 attr_key_type_value;
- u32 attr_val_len;
- u32 attr_val_len_value;
- u8 mech_tag;
- u8 mech_len;
- u32 mech;
- /*
- * maybe followed by iv data
- * followed by kek tag + kek blob
- * followed by empty mac tag
- * followed by empty pin tag
- * followed by encryted key tag + bytes
- */
- } __packed * req_pl;
- struct uw_rep_pl {
- struct pl_head head;
- u8 rc_tag;
- u8 rc_len;
- u32 rc;
- u8 data_tag;
- u8 data_lenfmt;
- u16 data_len;
- u8 data[512];
- } __packed * rep_pl;
- struct ep11_cprb *req = NULL, *rep = NULL;
- struct ep11_target_dev target;
- struct ep11_urb *urb = NULL;
- struct ep11keyblob *kb;
- size_t req_pl_size;
- int api, rc = -ENOMEM;
- u8 *p;
- /* request cprb and payload */
- req_pl_size = sizeof(struct uw_req_pl) + (iv ? 16 : 0)
- + ASN1TAGLEN(keksize) + 4 + ASN1TAGLEN(enckeysize);
- req = alloc_cprb(req_pl_size);
- if (!req)
- goto out;
- req_pl = (struct uw_req_pl *) (((u8 *) req) + sizeof(*req));
- api = (!keygenflags || keygenflags & 0x00200000) ? 4 : 1;
- prep_head(&req_pl->head, req_pl_size, api, 34); /* UnwrapKey */
- req_pl->attr_tag = 0x04;
- req_pl->attr_len = 7 * sizeof(u32);
- req_pl->attr_header = 0x10020000;
- req_pl->attr_bool_mask = keygenflags ? keygenflags : KEY_ATTR_DEFAULTS;
- req_pl->attr_bool_bits = keygenflags ? keygenflags : KEY_ATTR_DEFAULTS;
- req_pl->attr_key_type = 0x00000100; /* CKA_KEY_TYPE */
- req_pl->attr_key_type_value = 0x0000001f; /* CKK_AES */
- req_pl->attr_val_len = 0x00000161; /* CKA_VALUE_LEN */
- req_pl->attr_val_len_value = keybitsize / 8;
- /* mech is mech + mech params (iv here) */
- req_pl->mech_tag = 0x04;
- req_pl->mech_len = sizeof(u32) + (iv ? 16 : 0);
- req_pl->mech = (mech ? mech : 0x00001085); /* CKM_AES_CBC_PAD */
- p = ((u8 *) req_pl) + sizeof(*req_pl);
- if (iv) {
- memcpy(p, iv, 16);
- p += 16;
- }
- /* kek */
- p += asn1tag_write(p, 0x04, kek, keksize);
- /* empty mac key tag */
- *p++ = 0x04;
- *p++ = 0;
- /* empty pin tag */
- *p++ = 0x04;
- *p++ = 0;
- /* encrypted key value tag and bytes */
- p += asn1tag_write(p, 0x04, enckey, enckeysize);
- /* reply cprb and payload */
- rep = alloc_cprb(sizeof(struct uw_rep_pl));
- if (!rep)
- goto out;
- rep_pl = (struct uw_rep_pl *) (((u8 *) rep) + sizeof(*rep));
- /* urb and target */
- urb = kmalloc(sizeof(struct ep11_urb), GFP_KERNEL);
- if (!urb)
- goto out;
- target.ap_id = card;
- target.dom_id = domain;
- prep_urb(urb, &target, 1,
- req, sizeof(*req) + req_pl_size,
- rep, sizeof(*rep) + sizeof(*rep_pl));
- rc = zcrypt_send_ep11_cprb(urb);
- if (rc) {
- DEBUG_ERR(
- "%s zcrypt_send_ep11_cprb(card=%d dom=%d) failed, rc=%d\n",
- __func__, (int) card, (int) domain, rc);
- goto out;
- }
- rc = check_reply_pl((u8 *)rep_pl, __func__);
- if (rc)
- goto out;
- if (rep_pl->data_tag != 0x04 || rep_pl->data_lenfmt != 0x82) {
- DEBUG_ERR("%s unknown reply data format\n", __func__);
- rc = -EIO;
- goto out;
- }
- if (rep_pl->data_len > *keybufsize) {
- DEBUG_ERR("%s mismatch reply data len / key buffer len\n",
- __func__);
- rc = -ENOSPC;
- goto out;
- }
- /* copy key blob and set header values */
- memcpy(keybuf, rep_pl->data, rep_pl->data_len);
- *keybufsize = rep_pl->data_len;
- kb = (struct ep11keyblob *) keybuf;
- kb->head.type = TOKTYPE_NON_CCA;
- kb->head.len = rep_pl->data_len;
- kb->head.version = TOKVER_EP11_AES;
- kb->head.keybitlen = keybitsize;
- out:
- kfree(req);
- kfree(rep);
- kfree(urb);
- return rc;
- }
- static int ep11_wrapkey(u16 card, u16 domain,
- const u8 *key, size_t keysize,
- u32 mech, const u8 *iv,
- u8 *databuf, size_t *datasize)
- {
- struct wk_req_pl {
- struct pl_head head;
- u8 var_tag;
- u8 var_len;
- u32 var;
- u8 mech_tag;
- u8 mech_len;
- u32 mech;
- /*
- * followed by iv data
- * followed by key tag + key blob
- * followed by dummy kek param
- * followed by dummy mac param
- */
- } __packed * req_pl;
- struct wk_rep_pl {
- struct pl_head head;
- u8 rc_tag;
- u8 rc_len;
- u32 rc;
- u8 data_tag;
- u8 data_lenfmt;
- u16 data_len;
- u8 data[1024];
- } __packed * rep_pl;
- struct ep11_cprb *req = NULL, *rep = NULL;
- struct ep11_target_dev target;
- struct ep11_urb *urb = NULL;
- struct ep11keyblob *kb;
- size_t req_pl_size;
- int api, rc = -ENOMEM;
- bool has_header = false;
- u8 *p;
- /* maybe the session field holds a header with key info */
- kb = (struct ep11keyblob *) key;
- if (kb->head.type == TOKTYPE_NON_CCA &&
- kb->head.version == TOKVER_EP11_AES) {
- has_header = true;
- keysize = kb->head.len < keysize ? kb->head.len : keysize;
- }
- /* request cprb and payload */
- req_pl_size = sizeof(struct wk_req_pl) + (iv ? 16 : 0)
- + ASN1TAGLEN(keysize) + 4;
- req = alloc_cprb(req_pl_size);
- if (!req)
- goto out;
- if (!mech || mech == 0x80060001)
- req->flags |= 0x20; /* CPACF_WRAP needs special bit */
- req_pl = (struct wk_req_pl *) (((u8 *) req) + sizeof(*req));
- api = (!mech || mech == 0x80060001) ? 4 : 1; /* CKM_IBM_CPACF_WRAP */
- prep_head(&req_pl->head, req_pl_size, api, 33); /* WrapKey */
- req_pl->var_tag = 0x04;
- req_pl->var_len = sizeof(u32);
- /* mech is mech + mech params (iv here) */
- req_pl->mech_tag = 0x04;
- req_pl->mech_len = sizeof(u32) + (iv ? 16 : 0);
- req_pl->mech = (mech ? mech : 0x80060001); /* CKM_IBM_CPACF_WRAP */
- p = ((u8 *) req_pl) + sizeof(*req_pl);
- if (iv) {
- memcpy(p, iv, 16);
- p += 16;
- }
- /* key blob */
- p += asn1tag_write(p, 0x04, key, keysize);
- /* maybe the key argument needs the head data cleaned out */
- if (has_header) {
- kb = (struct ep11keyblob *)(p - keysize);
- memset(&kb->head, 0, sizeof(kb->head));
- }
- /* empty kek tag */
- *p++ = 0x04;
- *p++ = 0;
- /* empty mac tag */
- *p++ = 0x04;
- *p++ = 0;
- /* reply cprb and payload */
- rep = alloc_cprb(sizeof(struct wk_rep_pl));
- if (!rep)
- goto out;
- rep_pl = (struct wk_rep_pl *) (((u8 *) rep) + sizeof(*rep));
- /* urb and target */
- urb = kmalloc(sizeof(struct ep11_urb), GFP_KERNEL);
- if (!urb)
- goto out;
- target.ap_id = card;
- target.dom_id = domain;
- prep_urb(urb, &target, 1,
- req, sizeof(*req) + req_pl_size,
- rep, sizeof(*rep) + sizeof(*rep_pl));
- rc = zcrypt_send_ep11_cprb(urb);
- if (rc) {
- DEBUG_ERR(
- "%s zcrypt_send_ep11_cprb(card=%d dom=%d) failed, rc=%d\n",
- __func__, (int) card, (int) domain, rc);
- goto out;
- }
- rc = check_reply_pl((u8 *)rep_pl, __func__);
- if (rc)
- goto out;
- if (rep_pl->data_tag != 0x04 || rep_pl->data_lenfmt != 0x82) {
- DEBUG_ERR("%s unknown reply data format\n", __func__);
- rc = -EIO;
- goto out;
- }
- if (rep_pl->data_len > *datasize) {
- DEBUG_ERR("%s mismatch reply data len / data buffer len\n",
- __func__);
- rc = -ENOSPC;
- goto out;
- }
- /* copy the data from the cprb to the data buffer */
- memcpy(databuf, rep_pl->data, rep_pl->data_len);
- *datasize = rep_pl->data_len;
- out:
- kfree(req);
- kfree(rep);
- kfree(urb);
- return rc;
- }
- int ep11_clr2keyblob(u16 card, u16 domain, u32 keybitsize, u32 keygenflags,
- const u8 *clrkey, u8 *keybuf, size_t *keybufsize)
- {
- int rc;
- struct ep11keyblob *kb;
- u8 encbuf[64], *kek = NULL;
- size_t clrkeylen, keklen, encbuflen = sizeof(encbuf);
- if (keybitsize == 128 || keybitsize == 192 || keybitsize == 256)
- clrkeylen = keybitsize / 8;
- else {
- DEBUG_ERR(
- "%s unknown/unsupported keybitsize %d\n",
- __func__, keybitsize);
- return -EINVAL;
- }
- /* allocate memory for the temp kek */
- keklen = MAXEP11AESKEYBLOBSIZE;
- kek = kmalloc(keklen, GFP_ATOMIC);
- if (!kek) {
- rc = -ENOMEM;
- goto out;
- }
- /* Step 1: generate AES 256 bit random kek key */
- rc = ep11_genaeskey(card, domain, 256,
- 0x00006c00, /* EN/DECRYPT, WRAP/UNWRAP */
- kek, &keklen);
- if (rc) {
- DEBUG_ERR(
- "%s generate kek key failed, rc=%d\n",
- __func__, rc);
- goto out;
- }
- kb = (struct ep11keyblob *) kek;
- memset(&kb->head, 0, sizeof(kb->head));
- /* Step 2: encrypt clear key value with the kek key */
- rc = ep11_cryptsingle(card, domain, 0, 0, def_iv, kek, keklen,
- clrkey, clrkeylen, encbuf, &encbuflen);
- if (rc) {
- DEBUG_ERR(
- "%s encrypting key value with kek key failed, rc=%d\n",
- __func__, rc);
- goto out;
- }
- /* Step 3: import the encrypted key value as a new key */
- rc = ep11_unwrapkey(card, domain, kek, keklen,
- encbuf, encbuflen, 0, def_iv,
- keybitsize, 0, keybuf, keybufsize);
- if (rc) {
- DEBUG_ERR(
- "%s importing key value as new key failed,, rc=%d\n",
- __func__, rc);
- goto out;
- }
- out:
- kfree(kek);
- return rc;
- }
- EXPORT_SYMBOL(ep11_clr2keyblob);
- int ep11_kblob2protkey(u16 card, u16 dom, const u8 *keyblob, size_t keybloblen,
- u8 *protkey, u32 *protkeylen, u32 *protkeytype)
- {
- int rc = -EIO;
- u8 *wkbuf = NULL;
- size_t wkbuflen, keylen;
- struct wk_info {
- u16 version;
- u8 res1[16];
- u32 pkeytype;
- u32 pkeybitsize;
- u64 pkeysize;
- u8 res2[8];
- u8 pkey[0];
- } __packed * wki;
- const u8 *key;
- struct ep11kblob_header *hdr;
- /* key with or without header ? */
- hdr = (struct ep11kblob_header *) keyblob;
- if (hdr->type == TOKTYPE_NON_CCA
- && (hdr->version == TOKVER_EP11_AES_WITH_HEADER
- || hdr->version == TOKVER_EP11_ECC_WITH_HEADER)
- && is_ep11_keyblob(keyblob + sizeof(struct ep11kblob_header))) {
- /* EP11 AES or ECC key with header */
- key = keyblob + sizeof(struct ep11kblob_header);
- keylen = hdr->len - sizeof(struct ep11kblob_header);
- } else if (hdr->type == TOKTYPE_NON_CCA
- && hdr->version == TOKVER_EP11_AES
- && is_ep11_keyblob(keyblob)) {
- /* EP11 AES key (old style) */
- key = keyblob;
- keylen = hdr->len;
- } else if (is_ep11_keyblob(keyblob)) {
- /* raw EP11 key blob */
- key = keyblob;
- keylen = keybloblen;
- } else
- return -EINVAL;
- /* alloc temp working buffer */
- wkbuflen = (keylen + AES_BLOCK_SIZE) & (~(AES_BLOCK_SIZE - 1));
- wkbuf = kmalloc(wkbuflen, GFP_ATOMIC);
- if (!wkbuf)
- return -ENOMEM;
- /* ep11 secure key -> protected key + info */
- rc = ep11_wrapkey(card, dom, key, keylen,
- 0, def_iv, wkbuf, &wkbuflen);
- if (rc) {
- DEBUG_ERR(
- "%s rewrapping ep11 key to pkey failed, rc=%d\n",
- __func__, rc);
- goto out;
- }
- wki = (struct wk_info *) wkbuf;
- /* check struct version and pkey type */
- if (wki->version != 1 || wki->pkeytype < 1 || wki->pkeytype > 5) {
- DEBUG_ERR("%s wk info version %d or pkeytype %d mismatch.\n",
- __func__, (int) wki->version, (int) wki->pkeytype);
- rc = -EIO;
- goto out;
- }
- /* check protected key type field */
- switch (wki->pkeytype) {
- case 1: /* AES */
- switch (wki->pkeysize) {
- case 16+32:
- /* AES 128 protected key */
- if (protkeytype)
- *protkeytype = PKEY_KEYTYPE_AES_128;
- break;
- case 24+32:
- /* AES 192 protected key */
- if (protkeytype)
- *protkeytype = PKEY_KEYTYPE_AES_192;
- break;
- case 32+32:
- /* AES 256 protected key */
- if (protkeytype)
- *protkeytype = PKEY_KEYTYPE_AES_256;
- break;
- default:
- DEBUG_ERR("%s unknown/unsupported AES pkeysize %d\n",
- __func__, (int) wki->pkeysize);
- rc = -EIO;
- goto out;
- }
- break;
- case 3: /* EC-P */
- case 4: /* EC-ED */
- case 5: /* EC-BP */
- if (protkeytype)
- *protkeytype = PKEY_KEYTYPE_ECC;
- break;
- case 2: /* TDES */
- default:
- DEBUG_ERR("%s unknown/unsupported key type %d\n",
- __func__, (int) wki->pkeytype);
- rc = -EIO;
- goto out;
- }
- /* copy the tanslated protected key */
- if (wki->pkeysize > *protkeylen) {
- DEBUG_ERR("%s wk info pkeysize %llu > protkeysize %u\n",
- __func__, wki->pkeysize, *protkeylen);
- rc = -EINVAL;
- goto out;
- }
- memcpy(protkey, wki->pkey, wki->pkeysize);
- *protkeylen = wki->pkeysize;
- out:
- kfree(wkbuf);
- return rc;
- }
- EXPORT_SYMBOL(ep11_kblob2protkey);
- int ep11_findcard2(u32 **apqns, u32 *nr_apqns, u16 cardnr, u16 domain,
- int minhwtype, int minapi, const u8 *wkvp)
- {
- struct zcrypt_device_status_ext *device_status;
- u32 *_apqns = NULL, _nr_apqns = 0;
- int i, card, dom, rc = -ENOMEM;
- struct ep11_domain_info edi;
- struct ep11_card_info eci;
- /* fetch status of all crypto cards */
- device_status = kvmalloc_array(MAX_ZDEV_ENTRIES_EXT,
- sizeof(struct zcrypt_device_status_ext),
- GFP_KERNEL);
- if (!device_status)
- return -ENOMEM;
- zcrypt_device_status_mask_ext(device_status);
- /* allocate 1k space for up to 256 apqns */
- _apqns = kmalloc_array(256, sizeof(u32), GFP_KERNEL);
- if (!_apqns) {
- kvfree(device_status);
- return -ENOMEM;
- }
- /* walk through all the crypto apqnss */
- for (i = 0; i < MAX_ZDEV_ENTRIES_EXT; i++) {
- card = AP_QID_CARD(device_status[i].qid);
- dom = AP_QID_QUEUE(device_status[i].qid);
- /* check online state */
- if (!device_status[i].online)
- continue;
- /* check for ep11 functions */
- if (!(device_status[i].functions & 0x01))
- continue;
- /* check cardnr */
- if (cardnr != 0xFFFF && card != cardnr)
- continue;
- /* check domain */
- if (domain != 0xFFFF && dom != domain)
- continue;
- /* check min hardware type */
- if (minhwtype && device_status[i].hwtype < minhwtype)
- continue;
- /* check min api version if given */
- if (minapi > 0) {
- if (ep11_get_card_info(card, &eci, 0))
- continue;
- if (minapi > eci.API_ord_nr)
- continue;
- }
- /* check wkvp if given */
- if (wkvp) {
- if (ep11_get_domain_info(card, dom, &edi))
- continue;
- if (edi.cur_wk_state != '1')
- continue;
- if (memcmp(wkvp, edi.cur_wkvp, 16))
- continue;
- }
- /* apqn passed all filtering criterons, add to the array */
- if (_nr_apqns < 256)
- _apqns[_nr_apqns++] = (((u16)card) << 16) | ((u16) dom);
- }
- /* nothing found ? */
- if (!_nr_apqns) {
- kfree(_apqns);
- rc = -ENODEV;
- } else {
- /* no re-allocation, simple return the _apqns array */
- *apqns = _apqns;
- *nr_apqns = _nr_apqns;
- rc = 0;
- }
- kvfree(device_status);
- return rc;
- }
- EXPORT_SYMBOL(ep11_findcard2);
- void __exit zcrypt_ep11misc_exit(void)
- {
- card_cache_free();
- }
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