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path: root/drivers/s390/crypto/zcrypt_ep11misc.c
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Diffstat (limited to 'drivers/s390/crypto/zcrypt_ep11misc.c')
-rw-r--r--drivers/s390/crypto/zcrypt_ep11misc.c173
1 files changed, 102 insertions, 71 deletions
diff --git a/drivers/s390/crypto/zcrypt_ep11misc.c b/drivers/s390/crypto/zcrypt_ep11misc.c
index 0a877f9792..9bcf8fc69e 100644
--- a/drivers/s390/crypto/zcrypt_ep11misc.c
+++ b/drivers/s390/crypto/zcrypt_ep11misc.c
@@ -24,11 +24,6 @@
#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__)
-
#define EP11_PINBLOB_V1_BYTES 56
/* default iv used here */
@@ -510,7 +505,7 @@ static int check_reply_pl(const u8 *pl, const char *func)
/* start tag */
if (*pl++ != 0x30) {
- DEBUG_ERR("%s reply start tag mismatch\n", func);
+ ZCRYPT_DBF_ERR("%s reply start tag mismatch\n", func);
return -EIO;
}
@@ -527,46 +522,63 @@ static int check_reply_pl(const u8 *pl, const char *func)
len = *((u16 *)pl);
pl += 2;
} else {
- DEBUG_ERR("%s reply start tag lenfmt mismatch 0x%02hhx\n",
- func, *pl);
+ ZCRYPT_DBF_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);
+ ZCRYPT_DBF_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);
+ ZCRYPT_DBF_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);
+ ZCRYPT_DBF_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);
+ ZCRYPT_DBF_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);
+ ZCRYPT_DBF_ERR("%s return value 0x%08x != 0\n", func, ret);
return -EIO;
}
return 0;
}
+/* Check ep11 reply cprb, return 0 or suggested errno value. */
+static int check_reply_cprb(const struct ep11_cprb *rep, const char *func)
+{
+ /* check ep11 reply return code field */
+ if (rep->ret_code) {
+ ZCRYPT_DBF_ERR("%s ep11 reply ret_code=0x%08x\n", __func__,
+ rep->ret_code);
+ if (rep->ret_code == 0x000c0003)
+ return -EBUSY;
+ else
+ return -EIO;
+ }
+
+ return 0;
+}
+
/*
* Helper function which does an ep11 query with given query type.
*/
@@ -626,23 +638,28 @@ static int ep11_query_info(u16 cardnr, u16 domain, u32 query_type,
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);
+ ZCRYPT_DBF_ERR("%s zcrypt_send_ep11_cprb(card=%d dom=%d) failed, rc=%d\n",
+ __func__, (int)cardnr, (int)domain, rc);
goto out;
}
+ /* check ep11 reply cprb */
+ rc = check_reply_cprb(rep, __func__);
+ if (rc)
+ goto out;
+
+ /* check payload */
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__);
+ ZCRYPT_DBF_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__);
+ ZCRYPT_DBF_ERR("%s mismatch between reply data len and buffer len\n",
+ __func__);
rc = -ENOSPC;
goto out;
}
@@ -816,9 +833,8 @@ static int _ep11_genaeskey(u16 card, u16 domain,
case 256:
break;
default:
- DEBUG_ERR(
- "%s unknown/unsupported keybitsize %d\n",
- __func__, keybitsize);
+ ZCRYPT_DBF_ERR("%s unknown/unsupported keybitsize %d\n",
+ __func__, keybitsize);
rc = -EINVAL;
goto out;
}
@@ -878,23 +894,28 @@ static int _ep11_genaeskey(u16 card, u16 domain,
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);
+ ZCRYPT_DBF_ERR("%s zcrypt_send_ep11_cprb(card=%d dom=%d) failed, rc=%d\n",
+ __func__, (int)card, (int)domain, rc);
goto out;
}
+ /* check ep11 reply cprb */
+ rc = check_reply_cprb(rep, __func__);
+ if (rc)
+ goto out;
+
+ /* check payload */
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__);
+ ZCRYPT_DBF_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__);
+ ZCRYPT_DBF_ERR("%s mismatch reply data len / key buffer len\n",
+ __func__);
rc = -ENOSPC;
goto out;
}
@@ -1030,17 +1051,22 @@ static int ep11_cryptsingle(u16 card, u16 domain,
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);
+ ZCRYPT_DBF_ERR("%s zcrypt_send_ep11_cprb(card=%d dom=%d) failed, rc=%d\n",
+ __func__, (int)card, (int)domain, rc);
goto out;
}
+ /* check ep11 reply cprb */
+ rc = check_reply_cprb(rep, __func__);
+ if (rc)
+ goto out;
+
+ /* check payload */
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__);
+ ZCRYPT_DBF_ERR("%s unknown reply data format\n", __func__);
rc = -EIO;
goto out;
}
@@ -1053,14 +1079,14 @@ static int ep11_cryptsingle(u16 card, u16 domain,
n = *((u16 *)p);
p += 2;
} else {
- DEBUG_ERR("%s unknown reply data length format 0x%02hhx\n",
- __func__, rep_pl->data_lenfmt);
+ ZCRYPT_DBF_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);
+ ZCRYPT_DBF_ERR("%s mismatch reply data len %d / output buffer %zu\n",
+ __func__, n, *outbufsize);
rc = -ENOSPC;
goto out;
}
@@ -1188,23 +1214,28 @@ static int _ep11_unwrapkey(u16 card, u16 domain,
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);
+ ZCRYPT_DBF_ERR("%s zcrypt_send_ep11_cprb(card=%d dom=%d) failed, rc=%d\n",
+ __func__, (int)card, (int)domain, rc);
goto out;
}
+ /* check ep11 reply cprb */
+ rc = check_reply_cprb(rep, __func__);
+ if (rc)
+ goto out;
+
+ /* check payload */
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__);
+ ZCRYPT_DBF_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__);
+ ZCRYPT_DBF_ERR("%s mismatch reply data len / key buffer len\n",
+ __func__);
rc = -ENOSPC;
goto out;
}
@@ -1343,23 +1374,28 @@ static int _ep11_wrapkey(u16 card, u16 domain,
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);
+ ZCRYPT_DBF_ERR("%s zcrypt_send_ep11_cprb(card=%d dom=%d) failed, rc=%d\n",
+ __func__, (int)card, (int)domain, rc);
goto out;
}
+ /* check ep11 reply cprb */
+ rc = check_reply_cprb(rep, __func__);
+ if (rc)
+ goto out;
+
+ /* check payload */
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__);
+ ZCRYPT_DBF_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__);
+ ZCRYPT_DBF_ERR("%s mismatch reply data len / data buffer len\n",
+ __func__);
rc = -ENOSPC;
goto out;
}
@@ -1386,9 +1422,8 @@ int ep11_clr2keyblob(u16 card, u16 domain, u32 keybitsize, u32 keygenflags,
if (keybitsize == 128 || keybitsize == 192 || keybitsize == 256) {
clrkeylen = keybitsize / 8;
} else {
- DEBUG_ERR(
- "%s unknown/unsupported keybitsize %d\n",
- __func__, keybitsize);
+ ZCRYPT_DBF_ERR("%s unknown/unsupported keybitsize %d\n",
+ __func__, keybitsize);
return -EINVAL;
}
@@ -1405,9 +1440,8 @@ int ep11_clr2keyblob(u16 card, u16 domain, u32 keybitsize, u32 keygenflags,
0x00006c00, /* EN/DECRYPT, WRAP/UNWRAP */
kek, &keklen);
if (rc) {
- DEBUG_ERR(
- "%s generate kek key failed, rc=%d\n",
- __func__, rc);
+ ZCRYPT_DBF_ERR("%s generate kek key failed, rc=%d\n",
+ __func__, rc);
goto out;
}
@@ -1415,9 +1449,8 @@ int ep11_clr2keyblob(u16 card, u16 domain, u32 keybitsize, u32 keygenflags,
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);
+ ZCRYPT_DBF_ERR("%s encrypting key value with kek key failed, rc=%d\n",
+ __func__, rc);
goto out;
}
@@ -1426,9 +1459,8 @@ int ep11_clr2keyblob(u16 card, u16 domain, u32 keybitsize, u32 keygenflags,
encbuf, encbuflen, 0, def_iv,
keybitsize, 0, keybuf, keybufsize, keytype);
if (rc) {
- DEBUG_ERR(
- "%s importing key value as new key failed,, rc=%d\n",
- __func__, rc);
+ ZCRYPT_DBF_ERR("%s importing key value as new key failed,, rc=%d\n",
+ __func__, rc);
goto out;
}
@@ -1476,17 +1508,16 @@ int ep11_kblob2protkey(u16 card, u16 dom,
rc = _ep11_wrapkey(card, dom, (u8 *)key, keylen,
0, def_iv, wkbuf, &wkbuflen);
if (rc) {
- DEBUG_ERR(
- "%s rewrapping ep11 key to pkey failed, rc=%d\n",
- __func__, rc);
+ ZCRYPT_DBF_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);
+ ZCRYPT_DBF_ERR("%s wk info version %d or pkeytype %d mismatch.\n",
+ __func__, (int)wki->version, (int)wki->pkeytype);
rc = -EIO;
goto out;
}
@@ -1511,8 +1542,8 @@ int ep11_kblob2protkey(u16 card, u16 dom,
*protkeytype = PKEY_KEYTYPE_AES_256;
break;
default:
- DEBUG_ERR("%s unknown/unsupported AES pkeysize %d\n",
- __func__, (int)wki->pkeysize);
+ ZCRYPT_DBF_ERR("%s unknown/unsupported AES pkeysize %d\n",
+ __func__, (int)wki->pkeysize);
rc = -EIO;
goto out;
}
@@ -1525,16 +1556,16 @@ int ep11_kblob2protkey(u16 card, u16 dom,
break;
case 2: /* TDES */
default:
- DEBUG_ERR("%s unknown/unsupported key type %d\n",
- __func__, (int)wki->pkeytype);
+ ZCRYPT_DBF_ERR("%s unknown/unsupported key type %d\n",
+ __func__, (int)wki->pkeytype);
rc = -EIO;
goto out;
}
/* copy the translated protected key */
if (wki->pkeysize > *protkeylen) {
- DEBUG_ERR("%s wk info pkeysize %llu > protkeysize %u\n",
- __func__, wki->pkeysize, *protkeylen);
+ ZCRYPT_DBF_ERR("%s wk info pkeysize %llu > protkeysize %u\n",
+ __func__, wki->pkeysize, *protkeylen);
rc = -EINVAL;
goto out;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-05 16:11:52 +0000