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- // SPDX-License-Identifier: GPL-2.0
- /*
- * pkey device driver
- *
- * Copyright IBM Corp. 2017,2019
- * Author(s): Harald Freudenberger
- */
- #define KMSG_COMPONENT "pkey"
- #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
- #include <linux/fs.h>
- #include <linux/init.h>
- #include <linux/miscdevice.h>
- #include <linux/module.h>
- #include <linux/slab.h>
- #include <linux/kallsyms.h>
- #include <linux/debugfs.h>
- #include <linux/random.h>
- #include <linux/cpufeature.h>
- #include <asm/zcrypt.h>
- #include <asm/cpacf.h>
- #include <asm/pkey.h>
- #include <crypto/aes.h>
- #include "zcrypt_api.h"
- #include "zcrypt_ccamisc.h"
- #include "zcrypt_ep11misc.h"
- MODULE_LICENSE("GPL");
- MODULE_AUTHOR("IBM Corporation");
- MODULE_DESCRIPTION("s390 protected key interface");
- #define KEYBLOBBUFSIZE 8192 /* key buffer size used for internal processing */
- #define PROTKEYBLOBBUFSIZE 256 /* protected key buffer size used internal */
- #define MAXAPQNSINLIST 64 /* max 64 apqns within a apqn list */
- /*
- * debug feature data and functions
- */
- static debug_info_t *debug_info;
- #define DEBUG_DBG(...) debug_sprintf_event(debug_info, 6, ##__VA_ARGS__)
- #define DEBUG_INFO(...) debug_sprintf_event(debug_info, 5, ##__VA_ARGS__)
- #define DEBUG_WARN(...) debug_sprintf_event(debug_info, 4, ##__VA_ARGS__)
- #define DEBUG_ERR(...) debug_sprintf_event(debug_info, 3, ##__VA_ARGS__)
- static void __init pkey_debug_init(void)
- {
- /* 5 arguments per dbf entry (including the format string ptr) */
- debug_info = debug_register("pkey", 1, 1, 5 * sizeof(long));
- debug_register_view(debug_info, &debug_sprintf_view);
- debug_set_level(debug_info, 3);
- }
- static void __exit pkey_debug_exit(void)
- {
- debug_unregister(debug_info);
- }
- /* inside view of a protected key token (only type 0x00 version 0x01) */
- struct protaeskeytoken {
- u8 type; /* 0x00 for PAES specific key tokens */
- u8 res0[3];
- u8 version; /* should be 0x01 for protected AES key token */
- u8 res1[3];
- u32 keytype; /* key type, one of the PKEY_KEYTYPE values */
- u32 len; /* bytes actually stored in protkey[] */
- u8 protkey[MAXPROTKEYSIZE]; /* the protected key blob */
- } __packed;
- /* inside view of a clear key token (type 0x00 version 0x02) */
- struct clearaeskeytoken {
- u8 type; /* 0x00 for PAES specific key tokens */
- u8 res0[3];
- u8 version; /* 0x02 for clear AES key token */
- u8 res1[3];
- u32 keytype; /* key type, one of the PKEY_KEYTYPE values */
- u32 len; /* bytes actually stored in clearkey[] */
- u8 clearkey[]; /* clear key value */
- } __packed;
- /*
- * Create a protected key from a clear key value.
- */
- static int pkey_clr2protkey(u32 keytype,
- const struct pkey_clrkey *clrkey,
- struct pkey_protkey *protkey)
- {
- /* mask of available pckmo subfunctions */
- static cpacf_mask_t pckmo_functions;
- long fc;
- int keysize;
- u8 paramblock[64];
- switch (keytype) {
- case PKEY_KEYTYPE_AES_128:
- keysize = 16;
- fc = CPACF_PCKMO_ENC_AES_128_KEY;
- break;
- case PKEY_KEYTYPE_AES_192:
- keysize = 24;
- fc = CPACF_PCKMO_ENC_AES_192_KEY;
- break;
- case PKEY_KEYTYPE_AES_256:
- keysize = 32;
- fc = CPACF_PCKMO_ENC_AES_256_KEY;
- break;
- default:
- DEBUG_ERR("%s unknown/unsupported keytype %d\n",
- __func__, keytype);
- return -EINVAL;
- }
- /* Did we already check for PCKMO ? */
- if (!pckmo_functions.bytes[0]) {
- /* no, so check now */
- if (!cpacf_query(CPACF_PCKMO, &pckmo_functions))
- return -ENODEV;
- }
- /* check for the pckmo subfunction we need now */
- if (!cpacf_test_func(&pckmo_functions, fc)) {
- DEBUG_ERR("%s pckmo functions not available\n", __func__);
- return -ENODEV;
- }
- /* prepare param block */
- memset(paramblock, 0, sizeof(paramblock));
- memcpy(paramblock, clrkey->clrkey, keysize);
- /* call the pckmo instruction */
- cpacf_pckmo(fc, paramblock);
- /* copy created protected key */
- protkey->type = keytype;
- protkey->len = keysize + 32;
- memcpy(protkey->protkey, paramblock, keysize + 32);
- return 0;
- }
- /*
- * Find card and transform secure key into protected key.
- */
- static int pkey_skey2pkey(const u8 *key, struct pkey_protkey *pkey)
- {
- int rc, verify;
- u16 cardnr, domain;
- struct keytoken_header *hdr = (struct keytoken_header *)key;
- /*
- * The cca_xxx2protkey call may fail when a card has been
- * addressed where the master key was changed after last fetch
- * of the mkvp into the cache. Try 3 times: First witout verify
- * then with verify and last round with verify and old master
- * key verification pattern match not ignored.
- */
- for (verify = 0; verify < 3; verify++) {
- rc = cca_findcard(key, &cardnr, &domain, verify);
- if (rc < 0)
- continue;
- if (rc > 0 && verify < 2)
- continue;
- switch (hdr->version) {
- case TOKVER_CCA_AES:
- rc = cca_sec2protkey(cardnr, domain,
- key, pkey->protkey,
- &pkey->len, &pkey->type);
- break;
- case TOKVER_CCA_VLSC:
- rc = cca_cipher2protkey(cardnr, domain,
- key, pkey->protkey,
- &pkey->len, &pkey->type);
- break;
- default:
- return -EINVAL;
- }
- if (rc == 0)
- break;
- }
- if (rc)
- DEBUG_DBG("%s failed rc=%d\n", __func__, rc);
- return rc;
- }
- /*
- * Construct EP11 key with given clear key value.
- */
- static int pkey_clr2ep11key(const u8 *clrkey, size_t clrkeylen,
- u8 *keybuf, size_t *keybuflen)
- {
- int i, rc;
- u16 card, dom;
- u32 nr_apqns, *apqns = NULL;
- /* build a list of apqns suitable for ep11 keys with cpacf support */
- rc = ep11_findcard2(&apqns, &nr_apqns, 0xFFFF, 0xFFFF,
- ZCRYPT_CEX7, EP11_API_V, NULL);
- if (rc)
- goto out;
- /* go through the list of apqns and try to bild an ep11 key */
- for (rc = -ENODEV, i = 0; i < nr_apqns; i++) {
- card = apqns[i] >> 16;
- dom = apqns[i] & 0xFFFF;
- rc = ep11_clr2keyblob(card, dom, clrkeylen * 8,
- 0, clrkey, keybuf, keybuflen);
- if (rc == 0)
- break;
- }
- out:
- kfree(apqns);
- if (rc)
- DEBUG_DBG("%s failed rc=%d\n", __func__, rc);
- return rc;
- }
- /*
- * Find card and transform EP11 secure key into protected key.
- */
- static int pkey_ep11key2pkey(const u8 *key, struct pkey_protkey *pkey)
- {
- int i, rc;
- u16 card, dom;
- u32 nr_apqns, *apqns = NULL;
- struct ep11keyblob *kb = (struct ep11keyblob *) key;
- /* build a list of apqns suitable for this key */
- rc = ep11_findcard2(&apqns, &nr_apqns, 0xFFFF, 0xFFFF,
- ZCRYPT_CEX7, EP11_API_V, kb->wkvp);
- if (rc)
- goto out;
- /* go through the list of apqns and try to derive an pkey */
- for (rc = -ENODEV, i = 0; i < nr_apqns; i++) {
- card = apqns[i] >> 16;
- dom = apqns[i] & 0xFFFF;
- pkey->len = sizeof(pkey->protkey);
- rc = ep11_kblob2protkey(card, dom, key, kb->head.len,
- pkey->protkey, &pkey->len, &pkey->type);
- if (rc == 0)
- break;
- }
- out:
- kfree(apqns);
- if (rc)
- DEBUG_DBG("%s failed rc=%d\n", __func__, rc);
- return rc;
- }
- /*
- * Verify key and give back some info about the key.
- */
- static int pkey_verifykey(const struct pkey_seckey *seckey,
- u16 *pcardnr, u16 *pdomain,
- u16 *pkeysize, u32 *pattributes)
- {
- struct secaeskeytoken *t = (struct secaeskeytoken *) seckey;
- u16 cardnr, domain;
- int rc;
- /* check the secure key for valid AES secure key */
- rc = cca_check_secaeskeytoken(debug_info, 3, (u8 *) seckey, 0);
- if (rc)
- goto out;
- if (pattributes)
- *pattributes = PKEY_VERIFY_ATTR_AES;
- if (pkeysize)
- *pkeysize = t->bitsize;
- /* try to find a card which can handle this key */
- rc = cca_findcard(seckey->seckey, &cardnr, &domain, 1);
- if (rc < 0)
- goto out;
- if (rc > 0) {
- /* key mkvp matches to old master key mkvp */
- DEBUG_DBG("%s secure key has old mkvp\n", __func__);
- if (pattributes)
- *pattributes |= PKEY_VERIFY_ATTR_OLD_MKVP;
- rc = 0;
- }
- if (pcardnr)
- *pcardnr = cardnr;
- if (pdomain)
- *pdomain = domain;
- out:
- DEBUG_DBG("%s rc=%d\n", __func__, rc);
- return rc;
- }
- /*
- * Generate a random protected key
- */
- static int pkey_genprotkey(u32 keytype, struct pkey_protkey *protkey)
- {
- struct pkey_clrkey clrkey;
- int keysize;
- int rc;
- switch (keytype) {
- case PKEY_KEYTYPE_AES_128:
- keysize = 16;
- break;
- case PKEY_KEYTYPE_AES_192:
- keysize = 24;
- break;
- case PKEY_KEYTYPE_AES_256:
- keysize = 32;
- break;
- default:
- DEBUG_ERR("%s unknown/unsupported keytype %d\n", __func__,
- keytype);
- return -EINVAL;
- }
- /* generate a dummy random clear key */
- get_random_bytes(clrkey.clrkey, keysize);
- /* convert it to a dummy protected key */
- rc = pkey_clr2protkey(keytype, &clrkey, protkey);
- if (rc)
- return rc;
- /* replace the key part of the protected key with random bytes */
- get_random_bytes(protkey->protkey, keysize);
- return 0;
- }
- /*
- * Verify if a protected key is still valid
- */
- static int pkey_verifyprotkey(const struct pkey_protkey *protkey)
- {
- unsigned long fc;
- struct {
- u8 iv[AES_BLOCK_SIZE];
- u8 key[MAXPROTKEYSIZE];
- } param;
- u8 null_msg[AES_BLOCK_SIZE];
- u8 dest_buf[AES_BLOCK_SIZE];
- unsigned int k;
- switch (protkey->type) {
- case PKEY_KEYTYPE_AES_128:
- fc = CPACF_KMC_PAES_128;
- break;
- case PKEY_KEYTYPE_AES_192:
- fc = CPACF_KMC_PAES_192;
- break;
- case PKEY_KEYTYPE_AES_256:
- fc = CPACF_KMC_PAES_256;
- break;
- default:
- DEBUG_ERR("%s unknown/unsupported keytype %d\n", __func__,
- protkey->type);
- return -EINVAL;
- }
- memset(null_msg, 0, sizeof(null_msg));
- memset(param.iv, 0, sizeof(param.iv));
- memcpy(param.key, protkey->protkey, sizeof(param.key));
- k = cpacf_kmc(fc | CPACF_ENCRYPT, ¶m, null_msg, dest_buf,
- sizeof(null_msg));
- if (k != sizeof(null_msg)) {
- DEBUG_ERR("%s protected key is not valid\n", __func__);
- return -EKEYREJECTED;
- }
- return 0;
- }
- /*
- * Transform a non-CCA key token into a protected key
- */
- static int pkey_nonccatok2pkey(const u8 *key, u32 keylen,
- struct pkey_protkey *protkey)
- {
- int rc = -EINVAL;
- u8 *tmpbuf = NULL;
- struct keytoken_header *hdr = (struct keytoken_header *)key;
- switch (hdr->version) {
- case TOKVER_PROTECTED_KEY: {
- struct protaeskeytoken *t;
- if (keylen != sizeof(struct protaeskeytoken))
- goto out;
- t = (struct protaeskeytoken *)key;
- protkey->len = t->len;
- protkey->type = t->keytype;
- memcpy(protkey->protkey, t->protkey,
- sizeof(protkey->protkey));
- rc = pkey_verifyprotkey(protkey);
- break;
- }
- case TOKVER_CLEAR_KEY: {
- struct clearaeskeytoken *t;
- struct pkey_clrkey ckey;
- union u_tmpbuf {
- u8 skey[SECKEYBLOBSIZE];
- u8 ep11key[MAXEP11AESKEYBLOBSIZE];
- };
- size_t tmpbuflen = sizeof(union u_tmpbuf);
- if (keylen < sizeof(struct clearaeskeytoken))
- goto out;
- t = (struct clearaeskeytoken *)key;
- if (keylen != sizeof(*t) + t->len)
- goto out;
- if ((t->keytype == PKEY_KEYTYPE_AES_128 && t->len == 16)
- || (t->keytype == PKEY_KEYTYPE_AES_192 && t->len == 24)
- || (t->keytype == PKEY_KEYTYPE_AES_256 && t->len == 32))
- memcpy(ckey.clrkey, t->clearkey, t->len);
- else
- goto out;
- /* alloc temp key buffer space */
- tmpbuf = kmalloc(tmpbuflen, GFP_ATOMIC);
- if (!tmpbuf) {
- rc = -ENOMEM;
- goto out;
- }
- /* try direct way with the PCKMO instruction */
- rc = pkey_clr2protkey(t->keytype, &ckey, protkey);
- if (rc == 0)
- break;
- /* PCKMO failed, so try the CCA secure key way */
- rc = cca_clr2seckey(0xFFFF, 0xFFFF, t->keytype,
- ckey.clrkey, tmpbuf);
- if (rc == 0)
- rc = pkey_skey2pkey(tmpbuf, protkey);
- if (rc == 0)
- break;
- /* if the CCA way also failed, let's try via EP11 */
- rc = pkey_clr2ep11key(ckey.clrkey, t->len,
- tmpbuf, &tmpbuflen);
- if (rc == 0)
- rc = pkey_ep11key2pkey(tmpbuf, protkey);
- /* now we should really have an protected key */
- DEBUG_ERR("%s unable to build protected key from clear",
- __func__);
- break;
- }
- case TOKVER_EP11_AES: {
- /* check ep11 key for exportable as protected key */
- rc = ep11_check_aes_key(debug_info, 3, key, keylen, 1);
- if (rc)
- goto out;
- rc = pkey_ep11key2pkey(key, protkey);
- break;
- }
- case TOKVER_EP11_AES_WITH_HEADER:
- /* check ep11 key with header for exportable as protected key */
- rc = ep11_check_aes_key_with_hdr(debug_info, 3, key, keylen, 1);
- if (rc)
- goto out;
- rc = pkey_ep11key2pkey(key + sizeof(struct ep11kblob_header),
- protkey);
- break;
- default:
- DEBUG_ERR("%s unknown/unsupported non-CCA token version %d\n",
- __func__, hdr->version);
- rc = -EINVAL;
- }
- out:
- kfree(tmpbuf);
- return rc;
- }
- /*
- * Transform a CCA internal key token into a protected key
- */
- static int pkey_ccainttok2pkey(const u8 *key, u32 keylen,
- struct pkey_protkey *protkey)
- {
- struct keytoken_header *hdr = (struct keytoken_header *)key;
- switch (hdr->version) {
- case TOKVER_CCA_AES:
- if (keylen != sizeof(struct secaeskeytoken))
- return -EINVAL;
- break;
- case TOKVER_CCA_VLSC:
- if (keylen < hdr->len || keylen > MAXCCAVLSCTOKENSIZE)
- return -EINVAL;
- break;
- default:
- DEBUG_ERR("%s unknown/unsupported CCA internal token version %d\n",
- __func__, hdr->version);
- return -EINVAL;
- }
- return pkey_skey2pkey(key, protkey);
- }
- /*
- * Transform a key blob (of any type) into a protected key
- */
- int pkey_keyblob2pkey(const u8 *key, u32 keylen,
- struct pkey_protkey *protkey)
- {
- int rc;
- struct keytoken_header *hdr = (struct keytoken_header *)key;
- if (keylen < sizeof(struct keytoken_header)) {
- DEBUG_ERR("%s invalid keylen %d\n", __func__, keylen);
- return -EINVAL;
- }
- switch (hdr->type) {
- case TOKTYPE_NON_CCA:
- rc = pkey_nonccatok2pkey(key, keylen, protkey);
- break;
- case TOKTYPE_CCA_INTERNAL:
- rc = pkey_ccainttok2pkey(key, keylen, protkey);
- break;
- default:
- DEBUG_ERR("%s unknown/unsupported blob type %d\n",
- __func__, hdr->type);
- return -EINVAL;
- }
- DEBUG_DBG("%s rc=%d\n", __func__, rc);
- return rc;
- }
- EXPORT_SYMBOL(pkey_keyblob2pkey);
- static int pkey_genseckey2(const struct pkey_apqn *apqns, size_t nr_apqns,
- enum pkey_key_type ktype, enum pkey_key_size ksize,
- u32 kflags, u8 *keybuf, size_t *keybufsize)
- {
- int i, card, dom, rc;
- /* check for at least one apqn given */
- if (!apqns || !nr_apqns)
- return -EINVAL;
- /* check key type and size */
- switch (ktype) {
- case PKEY_TYPE_CCA_DATA:
- case PKEY_TYPE_CCA_CIPHER:
- if (*keybufsize < SECKEYBLOBSIZE)
- return -EINVAL;
- break;
- case PKEY_TYPE_EP11:
- if (*keybufsize < MINEP11AESKEYBLOBSIZE)
- return -EINVAL;
- break;
- default:
- return -EINVAL;
- }
- switch (ksize) {
- case PKEY_SIZE_AES_128:
- case PKEY_SIZE_AES_192:
- case PKEY_SIZE_AES_256:
- break;
- default:
- return -EINVAL;
- }
- /* simple try all apqns from the list */
- for (i = 0, rc = -ENODEV; i < nr_apqns; i++) {
- card = apqns[i].card;
- dom = apqns[i].domain;
- if (ktype == PKEY_TYPE_EP11) {
- rc = ep11_genaeskey(card, dom, ksize, kflags,
- keybuf, keybufsize);
- } else if (ktype == PKEY_TYPE_CCA_DATA) {
- rc = cca_genseckey(card, dom, ksize, keybuf);
- *keybufsize = (rc ? 0 : SECKEYBLOBSIZE);
- } else /* TOKVER_CCA_VLSC */
- rc = cca_gencipherkey(card, dom, ksize, kflags,
- keybuf, keybufsize);
- if (rc == 0)
- break;
- }
- return rc;
- }
- static int pkey_clr2seckey2(const struct pkey_apqn *apqns, size_t nr_apqns,
- enum pkey_key_type ktype, enum pkey_key_size ksize,
- u32 kflags, const u8 *clrkey,
- u8 *keybuf, size_t *keybufsize)
- {
- int i, card, dom, rc;
- /* check for at least one apqn given */
- if (!apqns || !nr_apqns)
- return -EINVAL;
- /* check key type and size */
- switch (ktype) {
- case PKEY_TYPE_CCA_DATA:
- case PKEY_TYPE_CCA_CIPHER:
- if (*keybufsize < SECKEYBLOBSIZE)
- return -EINVAL;
- break;
- case PKEY_TYPE_EP11:
- if (*keybufsize < MINEP11AESKEYBLOBSIZE)
- return -EINVAL;
- break;
- default:
- return -EINVAL;
- }
- switch (ksize) {
- case PKEY_SIZE_AES_128:
- case PKEY_SIZE_AES_192:
- case PKEY_SIZE_AES_256:
- break;
- default:
- return -EINVAL;
- }
- /* simple try all apqns from the list */
- for (i = 0, rc = -ENODEV; i < nr_apqns; i++) {
- card = apqns[i].card;
- dom = apqns[i].domain;
- if (ktype == PKEY_TYPE_EP11) {
- rc = ep11_clr2keyblob(card, dom, ksize, kflags,
- clrkey, keybuf, keybufsize);
- } else if (ktype == PKEY_TYPE_CCA_DATA) {
- rc = cca_clr2seckey(card, dom, ksize,
- clrkey, keybuf);
- *keybufsize = (rc ? 0 : SECKEYBLOBSIZE);
- } else /* TOKVER_CCA_VLSC */
- rc = cca_clr2cipherkey(card, dom, ksize, kflags,
- clrkey, keybuf, keybufsize);
- if (rc == 0)
- break;
- }
- return rc;
- }
- static int pkey_verifykey2(const u8 *key, size_t keylen,
- u16 *cardnr, u16 *domain,
- enum pkey_key_type *ktype,
- enum pkey_key_size *ksize, u32 *flags)
- {
- int rc;
- u32 _nr_apqns, *_apqns = NULL;
- struct keytoken_header *hdr = (struct keytoken_header *)key;
- if (keylen < sizeof(struct keytoken_header))
- return -EINVAL;
- if (hdr->type == TOKTYPE_CCA_INTERNAL
- && hdr->version == TOKVER_CCA_AES) {
- struct secaeskeytoken *t = (struct secaeskeytoken *)key;
- rc = cca_check_secaeskeytoken(debug_info, 3, key, 0);
- if (rc)
- goto out;
- if (ktype)
- *ktype = PKEY_TYPE_CCA_DATA;
- if (ksize)
- *ksize = (enum pkey_key_size) t->bitsize;
- rc = cca_findcard2(&_apqns, &_nr_apqns, *cardnr, *domain,
- ZCRYPT_CEX3C, AES_MK_SET, t->mkvp, 0, 1);
- if (rc == 0 && flags)
- *flags = PKEY_FLAGS_MATCH_CUR_MKVP;
- if (rc == -ENODEV) {
- rc = cca_findcard2(&_apqns, &_nr_apqns,
- *cardnr, *domain,
- ZCRYPT_CEX3C, AES_MK_SET,
- 0, t->mkvp, 1);
- if (rc == 0 && flags)
- *flags = PKEY_FLAGS_MATCH_ALT_MKVP;
- }
- if (rc)
- goto out;
- *cardnr = ((struct pkey_apqn *)_apqns)->card;
- *domain = ((struct pkey_apqn *)_apqns)->domain;
- } else if (hdr->type == TOKTYPE_CCA_INTERNAL
- && hdr->version == TOKVER_CCA_VLSC) {
- struct cipherkeytoken *t = (struct cipherkeytoken *)key;
- rc = cca_check_secaescipherkey(debug_info, 3, key, 0, 1);
- if (rc)
- goto out;
- if (ktype)
- *ktype = PKEY_TYPE_CCA_CIPHER;
- if (ksize) {
- *ksize = PKEY_SIZE_UNKNOWN;
- if (!t->plfver && t->wpllen == 512)
- *ksize = PKEY_SIZE_AES_128;
- else if (!t->plfver && t->wpllen == 576)
- *ksize = PKEY_SIZE_AES_192;
- else if (!t->plfver && t->wpllen == 640)
- *ksize = PKEY_SIZE_AES_256;
- }
- rc = cca_findcard2(&_apqns, &_nr_apqns, *cardnr, *domain,
- ZCRYPT_CEX6, AES_MK_SET, t->mkvp0, 0, 1);
- if (rc == 0 && flags)
- *flags = PKEY_FLAGS_MATCH_CUR_MKVP;
- if (rc == -ENODEV) {
- rc = cca_findcard2(&_apqns, &_nr_apqns,
- *cardnr, *domain,
- ZCRYPT_CEX6, AES_MK_SET,
- 0, t->mkvp0, 1);
- if (rc == 0 && flags)
- *flags = PKEY_FLAGS_MATCH_ALT_MKVP;
- }
- if (rc)
- goto out;
- *cardnr = ((struct pkey_apqn *)_apqns)->card;
- *domain = ((struct pkey_apqn *)_apqns)->domain;
- } else if (hdr->type == TOKTYPE_NON_CCA
- && hdr->version == TOKVER_EP11_AES) {
- struct ep11keyblob *kb = (struct ep11keyblob *)key;
- rc = ep11_check_aes_key(debug_info, 3, key, keylen, 1);
- if (rc)
- goto out;
- if (ktype)
- *ktype = PKEY_TYPE_EP11;
- if (ksize)
- *ksize = kb->head.keybitlen;
- rc = ep11_findcard2(&_apqns, &_nr_apqns, *cardnr, *domain,
- ZCRYPT_CEX7, EP11_API_V, kb->wkvp);
- if (rc)
- goto out;
- if (flags)
- *flags = PKEY_FLAGS_MATCH_CUR_MKVP;
- *cardnr = ((struct pkey_apqn *)_apqns)->card;
- *domain = ((struct pkey_apqn *)_apqns)->domain;
- } else
- rc = -EINVAL;
- out:
- kfree(_apqns);
- return rc;
- }
- static int pkey_keyblob2pkey2(const struct pkey_apqn *apqns, size_t nr_apqns,
- const u8 *key, size_t keylen,
- struct pkey_protkey *pkey)
- {
- int i, card, dom, rc;
- struct keytoken_header *hdr = (struct keytoken_header *)key;
- /* check for at least one apqn given */
- if (!apqns || !nr_apqns)
- return -EINVAL;
- if (keylen < sizeof(struct keytoken_header))
- return -EINVAL;
- if (hdr->type == TOKTYPE_CCA_INTERNAL) {
- if (hdr->version == TOKVER_CCA_AES) {
- if (keylen != sizeof(struct secaeskeytoken))
- return -EINVAL;
- if (cca_check_secaeskeytoken(debug_info, 3, key, 0))
- return -EINVAL;
- } else if (hdr->version == TOKVER_CCA_VLSC) {
- if (keylen < hdr->len || keylen > MAXCCAVLSCTOKENSIZE)
- return -EINVAL;
- if (cca_check_secaescipherkey(debug_info, 3, key, 0, 1))
- return -EINVAL;
- } else {
- DEBUG_ERR("%s unknown CCA internal token version %d\n",
- __func__, hdr->version);
- return -EINVAL;
- }
- } else if (hdr->type == TOKTYPE_NON_CCA) {
- if (hdr->version == TOKVER_EP11_AES) {
- if (keylen < sizeof(struct ep11keyblob))
- return -EINVAL;
- if (ep11_check_aes_key(debug_info, 3, key, keylen, 1))
- return -EINVAL;
- } else {
- return pkey_nonccatok2pkey(key, keylen, pkey);
- }
- } else {
- DEBUG_ERR("%s unknown/unsupported blob type %d\n",
- __func__, hdr->type);
- return -EINVAL;
- }
- /* simple try all apqns from the list */
- for (i = 0, rc = -ENODEV; i < nr_apqns; i++) {
- card = apqns[i].card;
- dom = apqns[i].domain;
- if (hdr->type == TOKTYPE_CCA_INTERNAL
- && hdr->version == TOKVER_CCA_AES)
- rc = cca_sec2protkey(card, dom, key, pkey->protkey,
- &pkey->len, &pkey->type);
- else if (hdr->type == TOKTYPE_CCA_INTERNAL
- && hdr->version == TOKVER_CCA_VLSC)
- rc = cca_cipher2protkey(card, dom, key, pkey->protkey,
- &pkey->len, &pkey->type);
- else { /* EP11 AES secure key blob */
- struct ep11keyblob *kb = (struct ep11keyblob *) key;
- pkey->len = sizeof(pkey->protkey);
- rc = ep11_kblob2protkey(card, dom, key, kb->head.len,
- pkey->protkey, &pkey->len,
- &pkey->type);
- }
- if (rc == 0)
- break;
- }
- return rc;
- }
- static int pkey_apqns4key(const u8 *key, size_t keylen, u32 flags,
- struct pkey_apqn *apqns, size_t *nr_apqns)
- {
- int rc;
- u32 _nr_apqns, *_apqns = NULL;
- struct keytoken_header *hdr = (struct keytoken_header *)key;
- if (keylen < sizeof(struct keytoken_header) || flags == 0)
- return -EINVAL;
- if (hdr->type == TOKTYPE_NON_CCA
- && (hdr->version == TOKVER_EP11_AES_WITH_HEADER
- || hdr->version == TOKVER_EP11_ECC_WITH_HEADER)
- && is_ep11_keyblob(key + sizeof(struct ep11kblob_header))) {
- int minhwtype = 0, api = 0;
- struct ep11keyblob *kb = (struct ep11keyblob *)
- (key + sizeof(struct ep11kblob_header));
- if (flags != PKEY_FLAGS_MATCH_CUR_MKVP)
- return -EINVAL;
- if (kb->attr & EP11_BLOB_PKEY_EXTRACTABLE) {
- minhwtype = ZCRYPT_CEX7;
- api = EP11_API_V;
- }
- rc = ep11_findcard2(&_apqns, &_nr_apqns, 0xFFFF, 0xFFFF,
- minhwtype, api, kb->wkvp);
- if (rc)
- goto out;
- } else if (hdr->type == TOKTYPE_NON_CCA
- && hdr->version == TOKVER_EP11_AES
- && is_ep11_keyblob(key)) {
- int minhwtype = 0, api = 0;
- struct ep11keyblob *kb = (struct ep11keyblob *) key;
- if (flags != PKEY_FLAGS_MATCH_CUR_MKVP)
- return -EINVAL;
- if (kb->attr & EP11_BLOB_PKEY_EXTRACTABLE) {
- minhwtype = ZCRYPT_CEX7;
- api = EP11_API_V;
- }
- rc = ep11_findcard2(&_apqns, &_nr_apqns, 0xFFFF, 0xFFFF,
- minhwtype, api, kb->wkvp);
- if (rc)
- goto out;
- } else if (hdr->type == TOKTYPE_CCA_INTERNAL) {
- int minhwtype = ZCRYPT_CEX3C;
- u64 cur_mkvp = 0, old_mkvp = 0;
- if (hdr->version == TOKVER_CCA_AES) {
- struct secaeskeytoken *t = (struct secaeskeytoken *)key;
- if (flags & PKEY_FLAGS_MATCH_CUR_MKVP)
- cur_mkvp = t->mkvp;
- if (flags & PKEY_FLAGS_MATCH_ALT_MKVP)
- old_mkvp = t->mkvp;
- } else if (hdr->version == TOKVER_CCA_VLSC) {
- struct cipherkeytoken *t = (struct cipherkeytoken *)key;
- minhwtype = ZCRYPT_CEX6;
- if (flags & PKEY_FLAGS_MATCH_CUR_MKVP)
- cur_mkvp = t->mkvp0;
- if (flags & PKEY_FLAGS_MATCH_ALT_MKVP)
- old_mkvp = t->mkvp0;
- } else {
- /* unknown cca internal token type */
- return -EINVAL;
- }
- rc = cca_findcard2(&_apqns, &_nr_apqns, 0xFFFF, 0xFFFF,
- minhwtype, AES_MK_SET,
- cur_mkvp, old_mkvp, 1);
- if (rc)
- goto out;
- } else if (hdr->type == TOKTYPE_CCA_INTERNAL_PKA) {
- u64 cur_mkvp = 0, old_mkvp = 0;
- struct eccprivkeytoken *t = (struct eccprivkeytoken *)key;
- if (t->secid == 0x20) {
- if (flags & PKEY_FLAGS_MATCH_CUR_MKVP)
- cur_mkvp = t->mkvp;
- if (flags & PKEY_FLAGS_MATCH_ALT_MKVP)
- old_mkvp = t->mkvp;
- } else {
- /* unknown cca internal 2 token type */
- return -EINVAL;
- }
- rc = cca_findcard2(&_apqns, &_nr_apqns, 0xFFFF, 0xFFFF,
- ZCRYPT_CEX7, APKA_MK_SET,
- cur_mkvp, old_mkvp, 1);
- if (rc)
- goto out;
- } else
- return -EINVAL;
- if (apqns) {
- if (*nr_apqns < _nr_apqns)
- rc = -ENOSPC;
- else
- memcpy(apqns, _apqns, _nr_apqns * sizeof(u32));
- }
- *nr_apqns = _nr_apqns;
- out:
- kfree(_apqns);
- return rc;
- }
- static int pkey_apqns4keytype(enum pkey_key_type ktype,
- u8 cur_mkvp[32], u8 alt_mkvp[32], u32 flags,
- struct pkey_apqn *apqns, size_t *nr_apqns)
- {
- int rc;
- u32 _nr_apqns, *_apqns = NULL;
- if (ktype == PKEY_TYPE_CCA_DATA || ktype == PKEY_TYPE_CCA_CIPHER) {
- u64 cur_mkvp = 0, old_mkvp = 0;
- int minhwtype = ZCRYPT_CEX3C;
- if (flags & PKEY_FLAGS_MATCH_CUR_MKVP)
- cur_mkvp = *((u64 *) cur_mkvp);
- if (flags & PKEY_FLAGS_MATCH_ALT_MKVP)
- old_mkvp = *((u64 *) alt_mkvp);
- if (ktype == PKEY_TYPE_CCA_CIPHER)
- minhwtype = ZCRYPT_CEX6;
- rc = cca_findcard2(&_apqns, &_nr_apqns, 0xFFFF, 0xFFFF,
- minhwtype, AES_MK_SET,
- cur_mkvp, old_mkvp, 1);
- if (rc)
- goto out;
- } else if (ktype == PKEY_TYPE_CCA_ECC) {
- u64 cur_mkvp = 0, old_mkvp = 0;
- if (flags & PKEY_FLAGS_MATCH_CUR_MKVP)
- cur_mkvp = *((u64 *) cur_mkvp);
- if (flags & PKEY_FLAGS_MATCH_ALT_MKVP)
- old_mkvp = *((u64 *) alt_mkvp);
- rc = cca_findcard2(&_apqns, &_nr_apqns, 0xFFFF, 0xFFFF,
- ZCRYPT_CEX7, APKA_MK_SET,
- cur_mkvp, old_mkvp, 1);
- if (rc)
- goto out;
- } else if (ktype == PKEY_TYPE_EP11 ||
- ktype == PKEY_TYPE_EP11_AES ||
- ktype == PKEY_TYPE_EP11_ECC) {
- u8 *wkvp = NULL;
- if (flags & PKEY_FLAGS_MATCH_CUR_MKVP)
- wkvp = cur_mkvp;
- rc = ep11_findcard2(&_apqns, &_nr_apqns, 0xFFFF, 0xFFFF,
- ZCRYPT_CEX7, EP11_API_V, wkvp);
- if (rc)
- goto out;
- } else
- return -EINVAL;
- if (apqns) {
- if (*nr_apqns < _nr_apqns)
- rc = -ENOSPC;
- else
- memcpy(apqns, _apqns, _nr_apqns * sizeof(u32));
- }
- *nr_apqns = _nr_apqns;
- out:
- kfree(_apqns);
- return rc;
- }
- static int pkey_keyblob2pkey3(const struct pkey_apqn *apqns, size_t nr_apqns,
- const u8 *key, size_t keylen, u32 *protkeytype,
- u8 *protkey, u32 *protkeylen)
- {
- int i, card, dom, rc;
- struct keytoken_header *hdr = (struct keytoken_header *)key;
- /* check for at least one apqn given */
- if (!apqns || !nr_apqns)
- return -EINVAL;
- if (keylen < sizeof(struct keytoken_header))
- return -EINVAL;
- if (hdr->type == TOKTYPE_NON_CCA
- && hdr->version == TOKVER_EP11_AES_WITH_HEADER
- && is_ep11_keyblob(key + sizeof(struct ep11kblob_header))) {
- /* EP11 AES key blob with header */
- if (ep11_check_aes_key_with_hdr(debug_info, 3, key, keylen, 1))
- return -EINVAL;
- } else if (hdr->type == TOKTYPE_NON_CCA
- && hdr->version == TOKVER_EP11_ECC_WITH_HEADER
- && is_ep11_keyblob(key + sizeof(struct ep11kblob_header))) {
- /* EP11 ECC key blob with header */
- if (ep11_check_ecc_key_with_hdr(debug_info, 3, key, keylen, 1))
- return -EINVAL;
- } else if (hdr->type == TOKTYPE_NON_CCA
- && hdr->version == TOKVER_EP11_AES
- && is_ep11_keyblob(key)) {
- /* EP11 AES key blob with header in session field */
- if (ep11_check_aes_key(debug_info, 3, key, keylen, 1))
- return -EINVAL;
- } else if (hdr->type == TOKTYPE_CCA_INTERNAL) {
- if (hdr->version == TOKVER_CCA_AES) {
- /* CCA AES data key */
- if (keylen != sizeof(struct secaeskeytoken))
- return -EINVAL;
- if (cca_check_secaeskeytoken(debug_info, 3, key, 0))
- return -EINVAL;
- } else if (hdr->version == TOKVER_CCA_VLSC) {
- /* CCA AES cipher key */
- if (keylen < hdr->len || keylen > MAXCCAVLSCTOKENSIZE)
- return -EINVAL;
- if (cca_check_secaescipherkey(debug_info, 3, key, 0, 1))
- return -EINVAL;
- } else {
- DEBUG_ERR("%s unknown CCA internal token version %d\n",
- __func__, hdr->version);
- return -EINVAL;
- }
- } else if (hdr->type == TOKTYPE_CCA_INTERNAL_PKA) {
- /* CCA ECC (private) key */
- if (keylen < sizeof(struct eccprivkeytoken))
- return -EINVAL;
- if (cca_check_sececckeytoken(debug_info, 3, key, keylen, 1))
- return -EINVAL;
- } else if (hdr->type == TOKTYPE_NON_CCA) {
- struct pkey_protkey pkey;
- rc = pkey_nonccatok2pkey(key, keylen, &pkey);
- if (rc)
- return rc;
- memcpy(protkey, pkey.protkey, pkey.len);
- *protkeylen = pkey.len;
- *protkeytype = pkey.type;
- return 0;
- } else {
- DEBUG_ERR("%s unknown/unsupported blob type %d\n",
- __func__, hdr->type);
- return -EINVAL;
- }
- /* simple try all apqns from the list */
- for (rc = -ENODEV, i = 0; rc && i < nr_apqns; i++) {
- card = apqns[i].card;
- dom = apqns[i].domain;
- if (hdr->type == TOKTYPE_NON_CCA
- && (hdr->version == TOKVER_EP11_AES_WITH_HEADER
- || hdr->version == TOKVER_EP11_ECC_WITH_HEADER)
- && is_ep11_keyblob(key + sizeof(struct ep11kblob_header)))
- rc = ep11_kblob2protkey(card, dom, key, hdr->len,
- protkey, protkeylen, protkeytype);
- else if (hdr->type == TOKTYPE_NON_CCA
- && hdr->version == TOKVER_EP11_AES
- && is_ep11_keyblob(key))
- rc = ep11_kblob2protkey(card, dom, key, hdr->len,
- protkey, protkeylen, protkeytype);
- else if (hdr->type == TOKTYPE_CCA_INTERNAL &&
- hdr->version == TOKVER_CCA_AES)
- rc = cca_sec2protkey(card, dom, key, protkey,
- protkeylen, protkeytype);
- else if (hdr->type == TOKTYPE_CCA_INTERNAL &&
- hdr->version == TOKVER_CCA_VLSC)
- rc = cca_cipher2protkey(card, dom, key, protkey,
- protkeylen, protkeytype);
- else if (hdr->type == TOKTYPE_CCA_INTERNAL_PKA)
- rc = cca_ecc2protkey(card, dom, key, protkey,
- protkeylen, protkeytype);
- else
- return -EINVAL;
- }
- return rc;
- }
- /*
- * File io functions
- */
- static void *_copy_key_from_user(void __user *ukey, size_t keylen)
- {
- if (!ukey || keylen < MINKEYBLOBSIZE || keylen > KEYBLOBBUFSIZE)
- return ERR_PTR(-EINVAL);
- return memdup_user(ukey, keylen);
- }
- static void *_copy_apqns_from_user(void __user *uapqns, size_t nr_apqns)
- {
- if (!uapqns || nr_apqns == 0)
- return NULL;
- return memdup_user(uapqns, nr_apqns * sizeof(struct pkey_apqn));
- }
- static long pkey_unlocked_ioctl(struct file *filp, unsigned int cmd,
- unsigned long arg)
- {
- int rc;
- switch (cmd) {
- case PKEY_GENSECK: {
- struct pkey_genseck __user *ugs = (void __user *) arg;
- struct pkey_genseck kgs;
- if (copy_from_user(&kgs, ugs, sizeof(kgs)))
- return -EFAULT;
- rc = cca_genseckey(kgs.cardnr, kgs.domain,
- kgs.keytype, kgs.seckey.seckey);
- DEBUG_DBG("%s cca_genseckey()=%d\n", __func__, rc);
- if (rc)
- break;
- if (copy_to_user(ugs, &kgs, sizeof(kgs)))
- return -EFAULT;
- break;
- }
- case PKEY_CLR2SECK: {
- struct pkey_clr2seck __user *ucs = (void __user *) arg;
- struct pkey_clr2seck kcs;
- if (copy_from_user(&kcs, ucs, sizeof(kcs)))
- return -EFAULT;
- rc = cca_clr2seckey(kcs.cardnr, kcs.domain, kcs.keytype,
- kcs.clrkey.clrkey, kcs.seckey.seckey);
- DEBUG_DBG("%s cca_clr2seckey()=%d\n", __func__, rc);
- if (rc)
- break;
- if (copy_to_user(ucs, &kcs, sizeof(kcs)))
- return -EFAULT;
- memzero_explicit(&kcs, sizeof(kcs));
- break;
- }
- case PKEY_SEC2PROTK: {
- struct pkey_sec2protk __user *usp = (void __user *) arg;
- struct pkey_sec2protk ksp;
- if (copy_from_user(&ksp, usp, sizeof(ksp)))
- return -EFAULT;
- rc = cca_sec2protkey(ksp.cardnr, ksp.domain,
- ksp.seckey.seckey, ksp.protkey.protkey,
- &ksp.protkey.len, &ksp.protkey.type);
- DEBUG_DBG("%s cca_sec2protkey()=%d\n", __func__, rc);
- if (rc)
- break;
- if (copy_to_user(usp, &ksp, sizeof(ksp)))
- return -EFAULT;
- break;
- }
- case PKEY_CLR2PROTK: {
- struct pkey_clr2protk __user *ucp = (void __user *) arg;
- struct pkey_clr2protk kcp;
- if (copy_from_user(&kcp, ucp, sizeof(kcp)))
- return -EFAULT;
- rc = pkey_clr2protkey(kcp.keytype,
- &kcp.clrkey, &kcp.protkey);
- DEBUG_DBG("%s pkey_clr2protkey()=%d\n", __func__, rc);
- if (rc)
- break;
- if (copy_to_user(ucp, &kcp, sizeof(kcp)))
- return -EFAULT;
- memzero_explicit(&kcp, sizeof(kcp));
- break;
- }
- case PKEY_FINDCARD: {
- struct pkey_findcard __user *ufc = (void __user *) arg;
- struct pkey_findcard kfc;
- if (copy_from_user(&kfc, ufc, sizeof(kfc)))
- return -EFAULT;
- rc = cca_findcard(kfc.seckey.seckey,
- &kfc.cardnr, &kfc.domain, 1);
- DEBUG_DBG("%s cca_findcard()=%d\n", __func__, rc);
- if (rc < 0)
- break;
- if (copy_to_user(ufc, &kfc, sizeof(kfc)))
- return -EFAULT;
- break;
- }
- case PKEY_SKEY2PKEY: {
- struct pkey_skey2pkey __user *usp = (void __user *) arg;
- struct pkey_skey2pkey ksp;
- if (copy_from_user(&ksp, usp, sizeof(ksp)))
- return -EFAULT;
- rc = pkey_skey2pkey(ksp.seckey.seckey, &ksp.protkey);
- DEBUG_DBG("%s pkey_skey2pkey()=%d\n", __func__, rc);
- if (rc)
- break;
- if (copy_to_user(usp, &ksp, sizeof(ksp)))
- return -EFAULT;
- break;
- }
- case PKEY_VERIFYKEY: {
- struct pkey_verifykey __user *uvk = (void __user *) arg;
- struct pkey_verifykey kvk;
- if (copy_from_user(&kvk, uvk, sizeof(kvk)))
- return -EFAULT;
- rc = pkey_verifykey(&kvk.seckey, &kvk.cardnr, &kvk.domain,
- &kvk.keysize, &kvk.attributes);
- DEBUG_DBG("%s pkey_verifykey()=%d\n", __func__, rc);
- if (rc)
- break;
- if (copy_to_user(uvk, &kvk, sizeof(kvk)))
- return -EFAULT;
- break;
- }
- case PKEY_GENPROTK: {
- struct pkey_genprotk __user *ugp = (void __user *) arg;
- struct pkey_genprotk kgp;
- if (copy_from_user(&kgp, ugp, sizeof(kgp)))
- return -EFAULT;
- rc = pkey_genprotkey(kgp.keytype, &kgp.protkey);
- DEBUG_DBG("%s pkey_genprotkey()=%d\n", __func__, rc);
- if (rc)
- break;
- if (copy_to_user(ugp, &kgp, sizeof(kgp)))
- return -EFAULT;
- break;
- }
- case PKEY_VERIFYPROTK: {
- struct pkey_verifyprotk __user *uvp = (void __user *) arg;
- struct pkey_verifyprotk kvp;
- if (copy_from_user(&kvp, uvp, sizeof(kvp)))
- return -EFAULT;
- rc = pkey_verifyprotkey(&kvp.protkey);
- DEBUG_DBG("%s pkey_verifyprotkey()=%d\n", __func__, rc);
- break;
- }
- case PKEY_KBLOB2PROTK: {
- struct pkey_kblob2pkey __user *utp = (void __user *) arg;
- struct pkey_kblob2pkey ktp;
- u8 *kkey;
- if (copy_from_user(&ktp, utp, sizeof(ktp)))
- return -EFAULT;
- kkey = _copy_key_from_user(ktp.key, ktp.keylen);
- if (IS_ERR(kkey))
- return PTR_ERR(kkey);
- rc = pkey_keyblob2pkey(kkey, ktp.keylen, &ktp.protkey);
- DEBUG_DBG("%s pkey_keyblob2pkey()=%d\n", __func__, rc);
- kfree(kkey);
- if (rc)
- break;
- if (copy_to_user(utp, &ktp, sizeof(ktp)))
- return -EFAULT;
- break;
- }
- case PKEY_GENSECK2: {
- struct pkey_genseck2 __user *ugs = (void __user *) arg;
- struct pkey_genseck2 kgs;
- struct pkey_apqn *apqns;
- size_t klen = KEYBLOBBUFSIZE;
- u8 *kkey;
- if (copy_from_user(&kgs, ugs, sizeof(kgs)))
- return -EFAULT;
- apqns = _copy_apqns_from_user(kgs.apqns, kgs.apqn_entries);
- if (IS_ERR(apqns))
- return PTR_ERR(apqns);
- kkey = kmalloc(klen, GFP_KERNEL);
- if (!kkey) {
- kfree(apqns);
- return -ENOMEM;
- }
- rc = pkey_genseckey2(apqns, kgs.apqn_entries,
- kgs.type, kgs.size, kgs.keygenflags,
- kkey, &klen);
- DEBUG_DBG("%s pkey_genseckey2()=%d\n", __func__, rc);
- kfree(apqns);
- if (rc) {
- kfree(kkey);
- break;
- }
- if (kgs.key) {
- if (kgs.keylen < klen) {
- kfree(kkey);
- return -EINVAL;
- }
- if (copy_to_user(kgs.key, kkey, klen)) {
- kfree(kkey);
- return -EFAULT;
- }
- }
- kgs.keylen = klen;
- if (copy_to_user(ugs, &kgs, sizeof(kgs)))
- rc = -EFAULT;
- kfree(kkey);
- break;
- }
- case PKEY_CLR2SECK2: {
- struct pkey_clr2seck2 __user *ucs = (void __user *) arg;
- struct pkey_clr2seck2 kcs;
- struct pkey_apqn *apqns;
- size_t klen = KEYBLOBBUFSIZE;
- u8 *kkey;
- if (copy_from_user(&kcs, ucs, sizeof(kcs)))
- return -EFAULT;
- apqns = _copy_apqns_from_user(kcs.apqns, kcs.apqn_entries);
- if (IS_ERR(apqns))
- return PTR_ERR(apqns);
- kkey = kmalloc(klen, GFP_KERNEL);
- if (!kkey) {
- kfree(apqns);
- return -ENOMEM;
- }
- rc = pkey_clr2seckey2(apqns, kcs.apqn_entries,
- kcs.type, kcs.size, kcs.keygenflags,
- kcs.clrkey.clrkey, kkey, &klen);
- DEBUG_DBG("%s pkey_clr2seckey2()=%d\n", __func__, rc);
- kfree(apqns);
- if (rc) {
- kfree(kkey);
- break;
- }
- if (kcs.key) {
- if (kcs.keylen < klen) {
- kfree(kkey);
- return -EINVAL;
- }
- if (copy_to_user(kcs.key, kkey, klen)) {
- kfree(kkey);
- return -EFAULT;
- }
- }
- kcs.keylen = klen;
- if (copy_to_user(ucs, &kcs, sizeof(kcs)))
- rc = -EFAULT;
- memzero_explicit(&kcs, sizeof(kcs));
- kfree(kkey);
- break;
- }
- case PKEY_VERIFYKEY2: {
- struct pkey_verifykey2 __user *uvk = (void __user *) arg;
- struct pkey_verifykey2 kvk;
- u8 *kkey;
- if (copy_from_user(&kvk, uvk, sizeof(kvk)))
- return -EFAULT;
- kkey = _copy_key_from_user(kvk.key, kvk.keylen);
- if (IS_ERR(kkey))
- return PTR_ERR(kkey);
- rc = pkey_verifykey2(kkey, kvk.keylen,
- &kvk.cardnr, &kvk.domain,
- &kvk.type, &kvk.size, &kvk.flags);
- DEBUG_DBG("%s pkey_verifykey2()=%d\n", __func__, rc);
- kfree(kkey);
- if (rc)
- break;
- if (copy_to_user(uvk, &kvk, sizeof(kvk)))
- return -EFAULT;
- break;
- }
- case PKEY_KBLOB2PROTK2: {
- struct pkey_kblob2pkey2 __user *utp = (void __user *) arg;
- struct pkey_kblob2pkey2 ktp;
- struct pkey_apqn *apqns = NULL;
- u8 *kkey;
- if (copy_from_user(&ktp, utp, sizeof(ktp)))
- return -EFAULT;
- apqns = _copy_apqns_from_user(ktp.apqns, ktp.apqn_entries);
- if (IS_ERR(apqns))
- return PTR_ERR(apqns);
- kkey = _copy_key_from_user(ktp.key, ktp.keylen);
- if (IS_ERR(kkey)) {
- kfree(apqns);
- return PTR_ERR(kkey);
- }
- rc = pkey_keyblob2pkey2(apqns, ktp.apqn_entries,
- kkey, ktp.keylen, &ktp.protkey);
- DEBUG_DBG("%s pkey_keyblob2pkey2()=%d\n", __func__, rc);
- kfree(apqns);
- kfree(kkey);
- if (rc)
- break;
- if (copy_to_user(utp, &ktp, sizeof(ktp)))
- return -EFAULT;
- break;
- }
- case PKEY_APQNS4K: {
- struct pkey_apqns4key __user *uak = (void __user *) arg;
- struct pkey_apqns4key kak;
- struct pkey_apqn *apqns = NULL;
- size_t nr_apqns, len;
- u8 *kkey;
- if (copy_from_user(&kak, uak, sizeof(kak)))
- return -EFAULT;
- nr_apqns = kak.apqn_entries;
- if (nr_apqns) {
- apqns = kmalloc_array(nr_apqns,
- sizeof(struct pkey_apqn),
- GFP_KERNEL);
- if (!apqns)
- return -ENOMEM;
- }
- kkey = _copy_key_from_user(kak.key, kak.keylen);
- if (IS_ERR(kkey)) {
- kfree(apqns);
- return PTR_ERR(kkey);
- }
- rc = pkey_apqns4key(kkey, kak.keylen, kak.flags,
- apqns, &nr_apqns);
- DEBUG_DBG("%s pkey_apqns4key()=%d\n", __func__, rc);
- kfree(kkey);
- if (rc && rc != -ENOSPC) {
- kfree(apqns);
- break;
- }
- if (!rc && kak.apqns) {
- if (nr_apqns > kak.apqn_entries) {
- kfree(apqns);
- return -EINVAL;
- }
- len = nr_apqns * sizeof(struct pkey_apqn);
- if (len) {
- if (copy_to_user(kak.apqns, apqns, len)) {
- kfree(apqns);
- return -EFAULT;
- }
- }
- }
- kak.apqn_entries = nr_apqns;
- if (copy_to_user(uak, &kak, sizeof(kak)))
- rc = -EFAULT;
- kfree(apqns);
- break;
- }
- case PKEY_APQNS4KT: {
- struct pkey_apqns4keytype __user *uat = (void __user *) arg;
- struct pkey_apqns4keytype kat;
- struct pkey_apqn *apqns = NULL;
- size_t nr_apqns, len;
- if (copy_from_user(&kat, uat, sizeof(kat)))
- return -EFAULT;
- nr_apqns = kat.apqn_entries;
- if (nr_apqns) {
- apqns = kmalloc_array(nr_apqns,
- sizeof(struct pkey_apqn),
- GFP_KERNEL);
- if (!apqns)
- return -ENOMEM;
- }
- rc = pkey_apqns4keytype(kat.type, kat.cur_mkvp, kat.alt_mkvp,
- kat.flags, apqns, &nr_apqns);
- DEBUG_DBG("%s pkey_apqns4keytype()=%d\n", __func__, rc);
- if (rc && rc != -ENOSPC) {
- kfree(apqns);
- break;
- }
- if (!rc && kat.apqns) {
- if (nr_apqns > kat.apqn_entries) {
- kfree(apqns);
- return -EINVAL;
- }
- len = nr_apqns * sizeof(struct pkey_apqn);
- if (len) {
- if (copy_to_user(kat.apqns, apqns, len)) {
- kfree(apqns);
- return -EFAULT;
- }
- }
- }
- kat.apqn_entries = nr_apqns;
- if (copy_to_user(uat, &kat, sizeof(kat)))
- rc = -EFAULT;
- kfree(apqns);
- break;
- }
- case PKEY_KBLOB2PROTK3: {
- struct pkey_kblob2pkey3 __user *utp = (void __user *) arg;
- struct pkey_kblob2pkey3 ktp;
- struct pkey_apqn *apqns = NULL;
- u32 protkeylen = PROTKEYBLOBBUFSIZE;
- u8 *kkey, *protkey;
- if (copy_from_user(&ktp, utp, sizeof(ktp)))
- return -EFAULT;
- apqns = _copy_apqns_from_user(ktp.apqns, ktp.apqn_entries);
- if (IS_ERR(apqns))
- return PTR_ERR(apqns);
- kkey = _copy_key_from_user(ktp.key, ktp.keylen);
- if (IS_ERR(kkey)) {
- kfree(apqns);
- return PTR_ERR(kkey);
- }
- protkey = kmalloc(protkeylen, GFP_KERNEL);
- if (!protkey) {
- kfree(apqns);
- kfree(kkey);
- return -ENOMEM;
- }
- rc = pkey_keyblob2pkey3(apqns, ktp.apqn_entries, kkey,
- ktp.keylen, &ktp.pkeytype,
- protkey, &protkeylen);
- DEBUG_DBG("%s pkey_keyblob2pkey3()=%d\n", __func__, rc);
- kfree(apqns);
- kfree(kkey);
- if (rc) {
- kfree(protkey);
- break;
- }
- if (ktp.pkey && ktp.pkeylen) {
- if (protkeylen > ktp.pkeylen) {
- kfree(protkey);
- return -EINVAL;
- }
- if (copy_to_user(ktp.pkey, protkey, protkeylen)) {
- kfree(protkey);
- return -EFAULT;
- }
- }
- kfree(protkey);
- ktp.pkeylen = protkeylen;
- if (copy_to_user(utp, &ktp, sizeof(ktp)))
- return -EFAULT;
- break;
- }
- default:
- /* unknown/unsupported ioctl cmd */
- return -ENOTTY;
- }
- return rc;
- }
- /*
- * Sysfs and file io operations
- */
- /*
- * Sysfs attribute read function for all protected key binary attributes.
- * The implementation can not deal with partial reads, because a new random
- * protected key blob is generated with each read. In case of partial reads
- * (i.e. off != 0 or count < key blob size) -EINVAL is returned.
- */
- static ssize_t pkey_protkey_aes_attr_read(u32 keytype, bool is_xts, char *buf,
- loff_t off, size_t count)
- {
- struct protaeskeytoken protkeytoken;
- struct pkey_protkey protkey;
- int rc;
- if (off != 0 || count < sizeof(protkeytoken))
- return -EINVAL;
- if (is_xts)
- if (count < 2 * sizeof(protkeytoken))
- return -EINVAL;
- memset(&protkeytoken, 0, sizeof(protkeytoken));
- protkeytoken.type = TOKTYPE_NON_CCA;
- protkeytoken.version = TOKVER_PROTECTED_KEY;
- protkeytoken.keytype = keytype;
- rc = pkey_genprotkey(protkeytoken.keytype, &protkey);
- if (rc)
- return rc;
- protkeytoken.len = protkey.len;
- memcpy(&protkeytoken.protkey, &protkey.protkey, protkey.len);
- memcpy(buf, &protkeytoken, sizeof(protkeytoken));
- if (is_xts) {
- rc = pkey_genprotkey(protkeytoken.keytype, &protkey);
- if (rc)
- return rc;
- protkeytoken.len = protkey.len;
- memcpy(&protkeytoken.protkey, &protkey.protkey, protkey.len);
- memcpy(buf + sizeof(protkeytoken), &protkeytoken,
- sizeof(protkeytoken));
- return 2 * sizeof(protkeytoken);
- }
- return sizeof(protkeytoken);
- }
- static ssize_t protkey_aes_128_read(struct file *filp,
- struct kobject *kobj,
- struct bin_attribute *attr,
- char *buf, loff_t off,
- size_t count)
- {
- return pkey_protkey_aes_attr_read(PKEY_KEYTYPE_AES_128, false, buf,
- off, count);
- }
- static ssize_t protkey_aes_192_read(struct file *filp,
- struct kobject *kobj,
- struct bin_attribute *attr,
- char *buf, loff_t off,
- size_t count)
- {
- return pkey_protkey_aes_attr_read(PKEY_KEYTYPE_AES_192, false, buf,
- off, count);
- }
- static ssize_t protkey_aes_256_read(struct file *filp,
- struct kobject *kobj,
- struct bin_attribute *attr,
- char *buf, loff_t off,
- size_t count)
- {
- return pkey_protkey_aes_attr_read(PKEY_KEYTYPE_AES_256, false, buf,
- off, count);
- }
- static ssize_t protkey_aes_128_xts_read(struct file *filp,
- struct kobject *kobj,
- struct bin_attribute *attr,
- char *buf, loff_t off,
- size_t count)
- {
- return pkey_protkey_aes_attr_read(PKEY_KEYTYPE_AES_128, true, buf,
- off, count);
- }
- static ssize_t protkey_aes_256_xts_read(struct file *filp,
- struct kobject *kobj,
- struct bin_attribute *attr,
- char *buf, loff_t off,
- size_t count)
- {
- return pkey_protkey_aes_attr_read(PKEY_KEYTYPE_AES_256, true, buf,
- off, count);
- }
- static BIN_ATTR_RO(protkey_aes_128, sizeof(struct protaeskeytoken));
- static BIN_ATTR_RO(protkey_aes_192, sizeof(struct protaeskeytoken));
- static BIN_ATTR_RO(protkey_aes_256, sizeof(struct protaeskeytoken));
- static BIN_ATTR_RO(protkey_aes_128_xts, 2 * sizeof(struct protaeskeytoken));
- static BIN_ATTR_RO(protkey_aes_256_xts, 2 * sizeof(struct protaeskeytoken));
- static struct bin_attribute *protkey_attrs[] = {
- &bin_attr_protkey_aes_128,
- &bin_attr_protkey_aes_192,
- &bin_attr_protkey_aes_256,
- &bin_attr_protkey_aes_128_xts,
- &bin_attr_protkey_aes_256_xts,
- NULL
- };
- static struct attribute_group protkey_attr_group = {
- .name = "protkey",
- .bin_attrs = protkey_attrs,
- };
- /*
- * Sysfs attribute read function for all secure key ccadata binary attributes.
- * The implementation can not deal with partial reads, because a new random
- * protected key blob is generated with each read. In case of partial reads
- * (i.e. off != 0 or count < key blob size) -EINVAL is returned.
- */
- static ssize_t pkey_ccadata_aes_attr_read(u32 keytype, bool is_xts, char *buf,
- loff_t off, size_t count)
- {
- int rc;
- struct pkey_seckey *seckey = (struct pkey_seckey *) buf;
- if (off != 0 || count < sizeof(struct secaeskeytoken))
- return -EINVAL;
- if (is_xts)
- if (count < 2 * sizeof(struct secaeskeytoken))
- return -EINVAL;
- rc = cca_genseckey(-1, -1, keytype, seckey->seckey);
- if (rc)
- return rc;
- if (is_xts) {
- seckey++;
- rc = cca_genseckey(-1, -1, keytype, seckey->seckey);
- if (rc)
- return rc;
- return 2 * sizeof(struct secaeskeytoken);
- }
- return sizeof(struct secaeskeytoken);
- }
- static ssize_t ccadata_aes_128_read(struct file *filp,
- struct kobject *kobj,
- struct bin_attribute *attr,
- char *buf, loff_t off,
- size_t count)
- {
- return pkey_ccadata_aes_attr_read(PKEY_KEYTYPE_AES_128, false, buf,
- off, count);
- }
- static ssize_t ccadata_aes_192_read(struct file *filp,
- struct kobject *kobj,
- struct bin_attribute *attr,
- char *buf, loff_t off,
- size_t count)
- {
- return pkey_ccadata_aes_attr_read(PKEY_KEYTYPE_AES_192, false, buf,
- off, count);
- }
- static ssize_t ccadata_aes_256_read(struct file *filp,
- struct kobject *kobj,
- struct bin_attribute *attr,
- char *buf, loff_t off,
- size_t count)
- {
- return pkey_ccadata_aes_attr_read(PKEY_KEYTYPE_AES_256, false, buf,
- off, count);
- }
- static ssize_t ccadata_aes_128_xts_read(struct file *filp,
- struct kobject *kobj,
- struct bin_attribute *attr,
- char *buf, loff_t off,
- size_t count)
- {
- return pkey_ccadata_aes_attr_read(PKEY_KEYTYPE_AES_128, true, buf,
- off, count);
- }
- static ssize_t ccadata_aes_256_xts_read(struct file *filp,
- struct kobject *kobj,
- struct bin_attribute *attr,
- char *buf, loff_t off,
- size_t count)
- {
- return pkey_ccadata_aes_attr_read(PKEY_KEYTYPE_AES_256, true, buf,
- off, count);
- }
- static BIN_ATTR_RO(ccadata_aes_128, sizeof(struct secaeskeytoken));
- static BIN_ATTR_RO(ccadata_aes_192, sizeof(struct secaeskeytoken));
- static BIN_ATTR_RO(ccadata_aes_256, sizeof(struct secaeskeytoken));
- static BIN_ATTR_RO(ccadata_aes_128_xts, 2 * sizeof(struct secaeskeytoken));
- static BIN_ATTR_RO(ccadata_aes_256_xts, 2 * sizeof(struct secaeskeytoken));
- static struct bin_attribute *ccadata_attrs[] = {
- &bin_attr_ccadata_aes_128,
- &bin_attr_ccadata_aes_192,
- &bin_attr_ccadata_aes_256,
- &bin_attr_ccadata_aes_128_xts,
- &bin_attr_ccadata_aes_256_xts,
- NULL
- };
- static struct attribute_group ccadata_attr_group = {
- .name = "ccadata",
- .bin_attrs = ccadata_attrs,
- };
- #define CCACIPHERTOKENSIZE (sizeof(struct cipherkeytoken) + 80)
- /*
- * Sysfs attribute read function for all secure key ccacipher binary attributes.
- * The implementation can not deal with partial reads, because a new random
- * secure key blob is generated with each read. In case of partial reads
- * (i.e. off != 0 or count < key blob size) -EINVAL is returned.
- */
- static ssize_t pkey_ccacipher_aes_attr_read(enum pkey_key_size keybits,
- bool is_xts, char *buf, loff_t off,
- size_t count)
- {
- int i, rc, card, dom;
- u32 nr_apqns, *apqns = NULL;
- size_t keysize = CCACIPHERTOKENSIZE;
- if (off != 0 || count < CCACIPHERTOKENSIZE)
- return -EINVAL;
- if (is_xts)
- if (count < 2 * CCACIPHERTOKENSIZE)
- return -EINVAL;
- /* build a list of apqns able to generate an cipher key */
- rc = cca_findcard2(&apqns, &nr_apqns, 0xFFFF, 0xFFFF,
- ZCRYPT_CEX6, 0, 0, 0, 0);
- if (rc)
- return rc;
- memset(buf, 0, is_xts ? 2 * keysize : keysize);
- /* simple try all apqns from the list */
- for (i = 0, rc = -ENODEV; i < nr_apqns; i++) {
- card = apqns[i] >> 16;
- dom = apqns[i] & 0xFFFF;
- rc = cca_gencipherkey(card, dom, keybits, 0, buf, &keysize);
- if (rc == 0)
- break;
- }
- if (rc)
- return rc;
- if (is_xts) {
- keysize = CCACIPHERTOKENSIZE;
- buf += CCACIPHERTOKENSIZE;
- rc = cca_gencipherkey(card, dom, keybits, 0, buf, &keysize);
- if (rc == 0)
- return 2 * CCACIPHERTOKENSIZE;
- }
- return CCACIPHERTOKENSIZE;
- }
- static ssize_t ccacipher_aes_128_read(struct file *filp,
- struct kobject *kobj,
- struct bin_attribute *attr,
- char *buf, loff_t off,
- size_t count)
- {
- return pkey_ccacipher_aes_attr_read(PKEY_SIZE_AES_128, false, buf,
- off, count);
- }
- static ssize_t ccacipher_aes_192_read(struct file *filp,
- struct kobject *kobj,
- struct bin_attribute *attr,
- char *buf, loff_t off,
- size_t count)
- {
- return pkey_ccacipher_aes_attr_read(PKEY_SIZE_AES_192, false, buf,
- off, count);
- }
- static ssize_t ccacipher_aes_256_read(struct file *filp,
- struct kobject *kobj,
- struct bin_attribute *attr,
- char *buf, loff_t off,
- size_t count)
- {
- return pkey_ccacipher_aes_attr_read(PKEY_SIZE_AES_256, false, buf,
- off, count);
- }
- static ssize_t ccacipher_aes_128_xts_read(struct file *filp,
- struct kobject *kobj,
- struct bin_attribute *attr,
- char *buf, loff_t off,
- size_t count)
- {
- return pkey_ccacipher_aes_attr_read(PKEY_SIZE_AES_128, true, buf,
- off, count);
- }
- static ssize_t ccacipher_aes_256_xts_read(struct file *filp,
- struct kobject *kobj,
- struct bin_attribute *attr,
- char *buf, loff_t off,
- size_t count)
- {
- return pkey_ccacipher_aes_attr_read(PKEY_SIZE_AES_256, true, buf,
- off, count);
- }
- static BIN_ATTR_RO(ccacipher_aes_128, CCACIPHERTOKENSIZE);
- static BIN_ATTR_RO(ccacipher_aes_192, CCACIPHERTOKENSIZE);
- static BIN_ATTR_RO(ccacipher_aes_256, CCACIPHERTOKENSIZE);
- static BIN_ATTR_RO(ccacipher_aes_128_xts, 2 * CCACIPHERTOKENSIZE);
- static BIN_ATTR_RO(ccacipher_aes_256_xts, 2 * CCACIPHERTOKENSIZE);
- static struct bin_attribute *ccacipher_attrs[] = {
- &bin_attr_ccacipher_aes_128,
- &bin_attr_ccacipher_aes_192,
- &bin_attr_ccacipher_aes_256,
- &bin_attr_ccacipher_aes_128_xts,
- &bin_attr_ccacipher_aes_256_xts,
- NULL
- };
- static struct attribute_group ccacipher_attr_group = {
- .name = "ccacipher",
- .bin_attrs = ccacipher_attrs,
- };
- /*
- * Sysfs attribute read function for all ep11 aes key binary attributes.
- * The implementation can not deal with partial reads, because a new random
- * secure key blob is generated with each read. In case of partial reads
- * (i.e. off != 0 or count < key blob size) -EINVAL is returned.
- * This function and the sysfs attributes using it provide EP11 key blobs
- * padded to the upper limit of MAXEP11AESKEYBLOBSIZE which is currently
- * 320 bytes.
- */
- static ssize_t pkey_ep11_aes_attr_read(enum pkey_key_size keybits,
- bool is_xts, char *buf, loff_t off,
- size_t count)
- {
- int i, rc, card, dom;
- u32 nr_apqns, *apqns = NULL;
- size_t keysize = MAXEP11AESKEYBLOBSIZE;
- if (off != 0 || count < MAXEP11AESKEYBLOBSIZE)
- return -EINVAL;
- if (is_xts)
- if (count < 2 * MAXEP11AESKEYBLOBSIZE)
- return -EINVAL;
- /* build a list of apqns able to generate an cipher key */
- rc = ep11_findcard2(&apqns, &nr_apqns, 0xFFFF, 0xFFFF,
- ZCRYPT_CEX7, EP11_API_V, NULL);
- if (rc)
- return rc;
- memset(buf, 0, is_xts ? 2 * keysize : keysize);
- /* simple try all apqns from the list */
- for (i = 0, rc = -ENODEV; i < nr_apqns; i++) {
- card = apqns[i] >> 16;
- dom = apqns[i] & 0xFFFF;
- rc = ep11_genaeskey(card, dom, keybits, 0, buf, &keysize);
- if (rc == 0)
- break;
- }
- if (rc)
- return rc;
- if (is_xts) {
- keysize = MAXEP11AESKEYBLOBSIZE;
- buf += MAXEP11AESKEYBLOBSIZE;
- rc = ep11_genaeskey(card, dom, keybits, 0, buf, &keysize);
- if (rc == 0)
- return 2 * MAXEP11AESKEYBLOBSIZE;
- }
- return MAXEP11AESKEYBLOBSIZE;
- }
- static ssize_t ep11_aes_128_read(struct file *filp,
- struct kobject *kobj,
- struct bin_attribute *attr,
- char *buf, loff_t off,
- size_t count)
- {
- return pkey_ep11_aes_attr_read(PKEY_SIZE_AES_128, false, buf,
- off, count);
- }
- static ssize_t ep11_aes_192_read(struct file *filp,
- struct kobject *kobj,
- struct bin_attribute *attr,
- char *buf, loff_t off,
- size_t count)
- {
- return pkey_ep11_aes_attr_read(PKEY_SIZE_AES_192, false, buf,
- off, count);
- }
- static ssize_t ep11_aes_256_read(struct file *filp,
- struct kobject *kobj,
- struct bin_attribute *attr,
- char *buf, loff_t off,
- size_t count)
- {
- return pkey_ep11_aes_attr_read(PKEY_SIZE_AES_256, false, buf,
- off, count);
- }
- static ssize_t ep11_aes_128_xts_read(struct file *filp,
- struct kobject *kobj,
- struct bin_attribute *attr,
- char *buf, loff_t off,
- size_t count)
- {
- return pkey_ep11_aes_attr_read(PKEY_SIZE_AES_128, true, buf,
- off, count);
- }
- static ssize_t ep11_aes_256_xts_read(struct file *filp,
- struct kobject *kobj,
- struct bin_attribute *attr,
- char *buf, loff_t off,
- size_t count)
- {
- return pkey_ep11_aes_attr_read(PKEY_SIZE_AES_256, true, buf,
- off, count);
- }
- static BIN_ATTR_RO(ep11_aes_128, MAXEP11AESKEYBLOBSIZE);
- static BIN_ATTR_RO(ep11_aes_192, MAXEP11AESKEYBLOBSIZE);
- static BIN_ATTR_RO(ep11_aes_256, MAXEP11AESKEYBLOBSIZE);
- static BIN_ATTR_RO(ep11_aes_128_xts, 2 * MAXEP11AESKEYBLOBSIZE);
- static BIN_ATTR_RO(ep11_aes_256_xts, 2 * MAXEP11AESKEYBLOBSIZE);
- static struct bin_attribute *ep11_attrs[] = {
- &bin_attr_ep11_aes_128,
- &bin_attr_ep11_aes_192,
- &bin_attr_ep11_aes_256,
- &bin_attr_ep11_aes_128_xts,
- &bin_attr_ep11_aes_256_xts,
- NULL
- };
- static struct attribute_group ep11_attr_group = {
- .name = "ep11",
- .bin_attrs = ep11_attrs,
- };
- static const struct attribute_group *pkey_attr_groups[] = {
- &protkey_attr_group,
- &ccadata_attr_group,
- &ccacipher_attr_group,
- &ep11_attr_group,
- NULL,
- };
- static const struct file_operations pkey_fops = {
- .owner = THIS_MODULE,
- .open = nonseekable_open,
- .llseek = no_llseek,
- .unlocked_ioctl = pkey_unlocked_ioctl,
- };
- static struct miscdevice pkey_dev = {
- .name = "pkey",
- .minor = MISC_DYNAMIC_MINOR,
- .mode = 0666,
- .fops = &pkey_fops,
- .groups = pkey_attr_groups,
- };
- /*
- * Module init
- */
- static int __init pkey_init(void)
- {
- cpacf_mask_t func_mask;
- /*
- * The pckmo instruction should be available - even if we don't
- * actually invoke it. This instruction comes with MSA 3 which
- * is also the minimum level for the kmc instructions which
- * are able to work with protected keys.
- */
- if (!cpacf_query(CPACF_PCKMO, &func_mask))
- return -ENODEV;
- /* check for kmc instructions available */
- if (!cpacf_query(CPACF_KMC, &func_mask))
- return -ENODEV;
- if (!cpacf_test_func(&func_mask, CPACF_KMC_PAES_128) ||
- !cpacf_test_func(&func_mask, CPACF_KMC_PAES_192) ||
- !cpacf_test_func(&func_mask, CPACF_KMC_PAES_256))
- return -ENODEV;
- pkey_debug_init();
- return misc_register(&pkey_dev);
- }
- /*
- * Module exit
- */
- static void __exit pkey_exit(void)
- {
- misc_deregister(&pkey_dev);
- pkey_debug_exit();
- }
- module_cpu_feature_match(MSA, pkey_init);
- module_exit(pkey_exit);
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