*
* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
*
- * Copyright (c) 2011, 2014, Intel Corporation.
+ * Copyright (c) 2011, 2015, Intel Corporation.
*
* Author: Eric Mei <ericm@clusterfs.com>
*/
#include "gss_api.h"
#include "gss_asn1.h"
#include "gss_krb5.h"
+#include "gss_crypto.h"
static spinlock_t krb5_seq_lock;
* yet. this need to be fixed in the future.
*/
static struct krb5_enctype enctypes[] = {
- [ENCTYPE_DES_CBC_RAW] = { /* des-cbc-md5 */
- "des-cbc-md5",
- "cbc(des)",
- "md5",
- 0,
- 16,
- 8,
- 0,
- },
- [ENCTYPE_DES3_CBC_RAW] = { /* des3-hmac-sha1 */
- "des3-hmac-sha1",
- "cbc(des3_ede)",
- "hmac(sha1)",
- 0,
- 20,
- 8,
- 1,
- },
- [ENCTYPE_AES128_CTS_HMAC_SHA1_96] = { /* aes128-cts */
- "aes128-cts-hmac-sha1-96",
- "cbc(aes)",
- "hmac(sha1)",
- 0,
- 12,
- 16,
- 1,
- },
- [ENCTYPE_AES256_CTS_HMAC_SHA1_96] = { /* aes256-cts */
- "aes256-cts-hmac-sha1-96",
- "cbc(aes)",
- "hmac(sha1)",
- 0,
- 12,
- 16,
- 1,
- },
- [ENCTYPE_ARCFOUR_HMAC] = { /* arcfour-hmac-md5 */
- "arcfour-hmac-md5",
- "ecb(arc4)",
- "hmac(md5)",
- 0,
- 16,
- 8,
- 1,
- },
+ [ENCTYPE_DES_CBC_RAW] = { /* des-cbc-md5 */
+ .ke_dispname = "des-cbc-md5",
+ .ke_enc_name = "cbc(des)",
+ .ke_hash_name = "md5",
+ .ke_hash_size = 16,
+ .ke_conf_size = 8,
+ },
+ [ENCTYPE_DES3_CBC_RAW] = { /* des3-hmac-sha1 */
+ .ke_dispname = "des3-hmac-sha1",
+ .ke_enc_name = "cbc(des3_ede)",
+ .ke_hash_name = "hmac(sha1)",
+ .ke_hash_size = 20,
+ .ke_conf_size = 8,
+ .ke_hash_hmac = 1,
+ },
+ [ENCTYPE_AES128_CTS_HMAC_SHA1_96] = { /* aes128-cts */
+ .ke_dispname = "aes128-cts-hmac-sha1-96",
+ .ke_enc_name = "cbc(aes)",
+ .ke_hash_name = "hmac(sha1)",
+ .ke_hash_size = 12,
+ .ke_conf_size = 16,
+ .ke_hash_hmac = 1,
+ },
+ [ENCTYPE_AES256_CTS_HMAC_SHA1_96] = { /* aes256-cts */
+ .ke_dispname = "aes256-cts-hmac-sha1-96",
+ .ke_enc_name = "cbc(aes)",
+ .ke_hash_name = "hmac(sha1)",
+ .ke_hash_size = 12,
+ .ke_conf_size = 16,
+ .ke_hash_hmac = 1,
+ },
+ [ENCTYPE_ARCFOUR_HMAC] = { /* arcfour-hmac-md5 */
+ .ke_dispname = "arcfour-hmac-md5",
+ .ke_enc_name = "ecb(arc4)",
+ .ke_hash_name = "hmac(md5)",
+ .ke_hash_size = 16,
+ .ke_conf_size = 8,
+ .ke_hash_hmac = 1,
+ }
};
#define MAX_ENCTYPES sizeof(enctypes)/sizeof(struct krb5_enctype)
}
static
-int keyblock_init(struct krb5_keyblock *kb, char *alg_name, int alg_mode)
-{
- kb->kb_tfm = crypto_alloc_blkcipher(alg_name, alg_mode, 0);
- if (IS_ERR(kb->kb_tfm)) {
- CERROR("failed to alloc tfm: %s, mode %d\n",
- alg_name, alg_mode);
- return -1;
- }
-
- if (crypto_blkcipher_setkey(kb->kb_tfm, kb->kb_key.data, kb->kb_key.len)) {
- CERROR("failed to set %s key, len %d\n",
- alg_name, kb->kb_key.len);
- return -1;
- }
-
- return 0;
-}
-
-static
int krb5_init_keys(struct krb5_ctx *kctx)
{
struct krb5_enctype *ke;
ke = &enctypes[kctx->kc_enctype];
- /* tfm arc4 is stateful, user should alloc-use-free by his own */
- if (kctx->kc_enctype != ENCTYPE_ARCFOUR_HMAC &&
- keyblock_init(&kctx->kc_keye, ke->ke_enc_name, ke->ke_enc_mode))
- return -1;
-
- /* tfm hmac is stateful, user should alloc-use-free by his own */
- if (ke->ke_hash_hmac == 0 &&
- keyblock_init(&kctx->kc_keyi, ke->ke_enc_name, ke->ke_enc_mode))
- return -1;
- if (ke->ke_hash_hmac == 0 &&
- keyblock_init(&kctx->kc_keyc, ke->ke_enc_name, ke->ke_enc_mode))
- return -1;
-
- return 0;
-}
-
-static
-void keyblock_free(struct krb5_keyblock *kb)
-{
- rawobj_free(&kb->kb_key);
- if (kb->kb_tfm)
- crypto_free_blkcipher(kb->kb_tfm);
-}
-
-static
-int keyblock_dup(struct krb5_keyblock *new, struct krb5_keyblock *kb)
-{
- return rawobj_dup(&new->kb_key, &kb->kb_key);
-}
-
-static
-int get_bytes(char **ptr, const char *end, void *res, int len)
-{
- char *p, *q;
- p = *ptr;
- q = p + len;
- if (q > end || q < p)
- return -1;
- memcpy(res, p, len);
- *ptr = q;
- return 0;
-}
-
-static
-int get_rawobj(char **ptr, const char *end, rawobj_t *res)
-{
- char *p, *q;
- __u32 len;
-
- p = *ptr;
- if (get_bytes(&p, end, &len, sizeof(len)))
- return -1;
-
- q = p + len;
- if (q > end || q < p)
- return -1;
-
- OBD_ALLOC_LARGE(res->data, len);
- if (!res->data)
- return -1;
-
- res->len = len;
- memcpy(res->data, p, len);
- *ptr = q;
- return 0;
-}
-
-static
-int get_keyblock(char **ptr, const char *end,
- struct krb5_keyblock *kb, __u32 keysize)
-{
- char *buf;
-
- OBD_ALLOC_LARGE(buf, keysize);
- if (buf == NULL)
- return -1;
+ /* tfm arc4 is stateful, user should alloc-use-free by his own */
+ if (kctx->kc_enctype != ENCTYPE_ARCFOUR_HMAC &&
+ gss_keyblock_init(&kctx->kc_keye, ke->ke_enc_name, ke->ke_enc_mode))
+ return -1;
- if (get_bytes(ptr, end, buf, keysize)) {
- OBD_FREE_LARGE(buf, keysize);
- return -1;
- }
+ /* tfm hmac is stateful, user should alloc-use-free by his own */
+ if (ke->ke_hash_hmac == 0 &&
+ gss_keyblock_init(&kctx->kc_keyi, ke->ke_enc_name, ke->ke_enc_mode))
+ return -1;
+ if (ke->ke_hash_hmac == 0 &&
+ gss_keyblock_init(&kctx->kc_keyc, ke->ke_enc_name, ke->ke_enc_mode))
+ return -1;
- kb->kb_key.len = keysize;
- kb->kb_key.data = buf;
return 0;
}
static
void delete_context_kerberos(struct krb5_ctx *kctx)
{
- rawobj_free(&kctx->kc_mech_used);
+ rawobj_free(&kctx->kc_mech_used);
- keyblock_free(&kctx->kc_keye);
- keyblock_free(&kctx->kc_keyi);
- keyblock_free(&kctx->kc_keyc);
+ gss_keyblock_free(&kctx->kc_keye);
+ gss_keyblock_free(&kctx->kc_keyi);
+ gss_keyblock_free(&kctx->kc_keyc);
}
static
__u32 import_context_rfc1964(struct krb5_ctx *kctx, char *p, char *end)
{
- unsigned int tmp_uint, keysize;
+ unsigned int tmp_uint, keysize;
- /* seed_init flag */
- if (get_bytes(&p, end, &tmp_uint, sizeof(tmp_uint)))
- goto out_err;
- kctx->kc_seed_init = (tmp_uint != 0);
+ /* seed_init flag */
+ if (gss_get_bytes(&p, end, &tmp_uint, sizeof(tmp_uint)))
+ goto out_err;
+ kctx->kc_seed_init = (tmp_uint != 0);
- /* seed */
- if (get_bytes(&p, end, kctx->kc_seed, sizeof(kctx->kc_seed)))
- goto out_err;
+ /* seed */
+ if (gss_get_bytes(&p, end, kctx->kc_seed, sizeof(kctx->kc_seed)))
+ goto out_err;
- /* sign/seal algorithm, not really used now */
- if (get_bytes(&p, end, &tmp_uint, sizeof(tmp_uint)) ||
- get_bytes(&p, end, &tmp_uint, sizeof(tmp_uint)))
- goto out_err;
+ /* sign/seal algorithm, not really used now */
+ if (gss_get_bytes(&p, end, &tmp_uint, sizeof(tmp_uint)) ||
+ gss_get_bytes(&p, end, &tmp_uint, sizeof(tmp_uint)))
+ goto out_err;
- /* end time */
- if (get_bytes(&p, end, &kctx->kc_endtime, sizeof(kctx->kc_endtime)))
- goto out_err;
+ /* end time */
+ if (gss_get_bytes(&p, end, &kctx->kc_endtime, sizeof(kctx->kc_endtime)))
+ goto out_err;
- /* seq send */
- if (get_bytes(&p, end, &tmp_uint, sizeof(tmp_uint)))
- goto out_err;
- kctx->kc_seq_send = tmp_uint;
+ /* seq send */
+ if (gss_get_bytes(&p, end, &tmp_uint, sizeof(tmp_uint)))
+ goto out_err;
+ kctx->kc_seq_send = tmp_uint;
- /* mech oid */
- if (get_rawobj(&p, end, &kctx->kc_mech_used))
- goto out_err;
+ /* mech oid */
+ if (gss_get_rawobj(&p, end, &kctx->kc_mech_used))
+ goto out_err;
- /* old style enc/seq keys in format:
- * - enctype (u32)
- * - keysize (u32)
- * - keydata
- * we decompose them to fit into the new context
- */
+ /* old style enc/seq keys in format:
+ * - enctype (u32)
+ * - keysize (u32)
+ * - keydata
+ * we decompose them to fit into the new context
+ */
- /* enc key */
- if (get_bytes(&p, end, &kctx->kc_enctype, sizeof(kctx->kc_enctype)))
- goto out_err;
+ /* enc key */
+ if (gss_get_bytes(&p, end, &kctx->kc_enctype, sizeof(kctx->kc_enctype)))
+ goto out_err;
- if (get_bytes(&p, end, &keysize, sizeof(keysize)))
- goto out_err;
+ if (gss_get_bytes(&p, end, &keysize, sizeof(keysize)))
+ goto out_err;
- if (get_keyblock(&p, end, &kctx->kc_keye, keysize))
- goto out_err;
+ if (gss_get_keyblock(&p, end, &kctx->kc_keye, keysize))
+ goto out_err;
- /* seq key */
- if (get_bytes(&p, end, &tmp_uint, sizeof(tmp_uint)) ||
- tmp_uint != kctx->kc_enctype)
- goto out_err;
+ /* seq key */
+ if (gss_get_bytes(&p, end, &tmp_uint, sizeof(tmp_uint)) ||
+ tmp_uint != kctx->kc_enctype)
+ goto out_err;
- if (get_bytes(&p, end, &tmp_uint, sizeof(tmp_uint)) ||
- tmp_uint != keysize)
- goto out_err;
+ if (gss_get_bytes(&p, end, &tmp_uint, sizeof(tmp_uint)) ||
+ tmp_uint != keysize)
+ goto out_err;
- if (get_keyblock(&p, end, &kctx->kc_keyc, keysize))
- goto out_err;
+ if (gss_get_keyblock(&p, end, &kctx->kc_keyc, keysize))
+ goto out_err;
- /* old style fallback */
- if (keyblock_dup(&kctx->kc_keyi, &kctx->kc_keyc))
- goto out_err;
+ /* old style fallback */
+ if (gss_keyblock_dup(&kctx->kc_keyi, &kctx->kc_keyc))
+ goto out_err;
- if (p != end)
- goto out_err;
+ if (p != end)
+ goto out_err;
CDEBUG(D_SEC, "successfully imported rfc1964 context\n");
- return 0;
+ return 0;
out_err:
- return GSS_S_FAILURE;
+ return GSS_S_FAILURE;
}
/* Flags for version 2 context flags */
static
__u32 import_context_rfc4121(struct krb5_ctx *kctx, char *p, char *end)
{
- unsigned int tmp_uint, keysize;
-
- /* end time */
- if (get_bytes(&p, end, &kctx->kc_endtime, sizeof(kctx->kc_endtime)))
- goto out_err;
-
- /* flags */
- if (get_bytes(&p, end, &tmp_uint, sizeof(tmp_uint)))
- goto out_err;
-
- if (tmp_uint & KRB5_CTX_FLAG_INITIATOR)
- kctx->kc_initiate = 1;
- if (tmp_uint & KRB5_CTX_FLAG_CFX)
- kctx->kc_cfx = 1;
- if (tmp_uint & KRB5_CTX_FLAG_ACCEPTOR_SUBKEY)
- kctx->kc_have_acceptor_subkey = 1;
-
- /* seq send */
- if (get_bytes(&p, end, &kctx->kc_seq_send, sizeof(kctx->kc_seq_send)))
- goto out_err;
-
- /* enctype */
- if (get_bytes(&p, end, &kctx->kc_enctype, sizeof(kctx->kc_enctype)))
- goto out_err;
-
- /* size of each key */
- if (get_bytes(&p, end, &keysize, sizeof(keysize)))
- goto out_err;
-
- /* number of keys - should always be 3 */
- if (get_bytes(&p, end, &tmp_uint, sizeof(tmp_uint)))
- goto out_err;
-
- if (tmp_uint != 3) {
- CERROR("Invalid number of keys: %u\n", tmp_uint);
- goto out_err;
- }
+ unsigned int tmp_uint, keysize;
+
+ /* end time */
+ if (gss_get_bytes(&p, end, &kctx->kc_endtime, sizeof(kctx->kc_endtime)))
+ goto out_err;
+
+ /* flags */
+ if (gss_get_bytes(&p, end, &tmp_uint, sizeof(tmp_uint)))
+ goto out_err;
+
+ if (tmp_uint & KRB5_CTX_FLAG_INITIATOR)
+ kctx->kc_initiate = 1;
+ if (tmp_uint & KRB5_CTX_FLAG_CFX)
+ kctx->kc_cfx = 1;
+ if (tmp_uint & KRB5_CTX_FLAG_ACCEPTOR_SUBKEY)
+ kctx->kc_have_acceptor_subkey = 1;
+
+ /* seq send */
+ if (gss_get_bytes(&p, end, &kctx->kc_seq_send,
+ sizeof(kctx->kc_seq_send)))
+ goto out_err;
+
+ /* enctype */
+ if (gss_get_bytes(&p, end, &kctx->kc_enctype, sizeof(kctx->kc_enctype)))
+ goto out_err;
+
+ /* size of each key */
+ if (gss_get_bytes(&p, end, &keysize, sizeof(keysize)))
+ goto out_err;
+
+ /* number of keys - should always be 3 */
+ if (gss_get_bytes(&p, end, &tmp_uint, sizeof(tmp_uint)))
+ goto out_err;
+
+ if (tmp_uint != 3) {
+ CERROR("Invalid number of keys: %u\n", tmp_uint);
+ goto out_err;
+ }
- /* ke */
- if (get_keyblock(&p, end, &kctx->kc_keye, keysize))
- goto out_err;
- /* ki */
- if (get_keyblock(&p, end, &kctx->kc_keyi, keysize))
- goto out_err;
- /* ki */
- if (get_keyblock(&p, end, &kctx->kc_keyc, keysize))
- goto out_err;
+ /* ke */
+ if (gss_get_keyblock(&p, end, &kctx->kc_keye, keysize))
+ goto out_err;
+ /* ki */
+ if (gss_get_keyblock(&p, end, &kctx->kc_keyi, keysize))
+ goto out_err;
+ /* ki */
+ if (gss_get_keyblock(&p, end, &kctx->kc_keyc, keysize))
+ goto out_err;
CDEBUG(D_SEC, "successfully imported v2 context\n");
- return 0;
+ return 0;
out_err:
- return GSS_S_FAILURE;
+ return GSS_S_FAILURE;
}
/*
__u32 gss_import_sec_context_kerberos(rawobj_t *inbuf,
struct gss_ctx *gctx)
{
- struct krb5_ctx *kctx;
- char *p = (char *) inbuf->data;
- char *end = (char *) (inbuf->data + inbuf->len);
- unsigned int tmp_uint, rc;
+ struct krb5_ctx *kctx;
+ char *p = (char *)inbuf->data;
+ char *end = (char *)(inbuf->data + inbuf->len);
+ unsigned int tmp_uint, rc;
- if (get_bytes(&p, end, &tmp_uint, sizeof(tmp_uint))) {
- CERROR("Fail to read version\n");
- return GSS_S_FAILURE;
- }
+ if (gss_get_bytes(&p, end, &tmp_uint, sizeof(tmp_uint))) {
+ CERROR("Fail to read version\n");
+ return GSS_S_FAILURE;
+ }
/* only support 0, 1 for the moment */
if (tmp_uint > 2) {
if (rawobj_dup(&knew->kc_mech_used, &kctx->kc_mech_used))
goto out_err;
- if (keyblock_dup(&knew->kc_keye, &kctx->kc_keye))
- goto out_err;
- if (keyblock_dup(&knew->kc_keyi, &kctx->kc_keyi))
- goto out_err;
- if (keyblock_dup(&knew->kc_keyc, &kctx->kc_keyc))
- goto out_err;
+ if (gss_keyblock_dup(&knew->kc_keye, &kctx->kc_keye))
+ goto out_err;
+ if (gss_keyblock_dup(&knew->kc_keyi, &kctx->kc_keyi))
+ goto out_err;
+ if (gss_keyblock_dup(&knew->kc_keyc, &kctx->kc_keyc))
+ goto out_err;
if (krb5_init_keys(knew))
goto out_err;
{
struct krb5_ctx *kctx = gctx->internal_ctx_id;
- *endtime = (unsigned long) ((__u32) kctx->kc_endtime);
+ *endtime = (unsigned long)((__u32) kctx->kc_endtime);
return GSS_S_COMPLETE;
}
OBD_FREE_PTR(kctx);
}
-static
-void buf_to_sg(struct scatterlist *sg, void *ptr, int len)
-{
- sg_init_table(sg, 1);
- sg_set_buf(sg, ptr, len);
-}
-
-static
-__u32 krb5_encrypt(struct crypto_blkcipher *tfm,
- int decrypt,
- void * iv,
- void * in,
- void * out,
- int length)
-{
- struct blkcipher_desc desc;
- struct scatterlist sg;
- __u8 local_iv[16] = {0};
- __u32 ret = -EINVAL;
-
- LASSERT(tfm);
- desc.tfm = tfm;
- desc.info = local_iv;
- desc.flags= 0;
-
- if (length % crypto_blkcipher_blocksize(tfm) != 0) {
- CERROR("output length %d mismatch blocksize %d\n",
- length, crypto_blkcipher_blocksize(tfm));
- goto out;
- }
-
- if (crypto_blkcipher_ivsize(tfm) > 16) {
- CERROR("iv size too large %d\n", crypto_blkcipher_ivsize(tfm));
- goto out;
- }
-
- if (iv)
- memcpy(local_iv, iv, crypto_blkcipher_ivsize(tfm));
-
- memcpy(out, in, length);
- buf_to_sg(&sg, out, length);
-
- if (decrypt)
- ret = crypto_blkcipher_decrypt_iv(&desc, &sg, &sg, length);
- else
- ret = crypto_blkcipher_encrypt_iv(&desc, &sg, &sg, length);
-
-out:
- return(ret);
-}
-
-static inline
-int krb5_digest_hmac(struct crypto_hash *tfm,
- rawobj_t *key,
- struct krb5_header *khdr,
- int msgcnt, rawobj_t *msgs,
- int iovcnt, lnet_kiov_t *iovs,
- rawobj_t *cksum)
-{
- struct hash_desc desc;
- struct scatterlist sg[1];
- int i;
-
- crypto_hash_setkey(tfm, key->data, key->len);
- desc.tfm = tfm;
- desc.flags= 0;
-
- crypto_hash_init(&desc);
-
- for (i = 0; i < msgcnt; i++) {
- if (msgs[i].len == 0)
- continue;
- buf_to_sg(sg, (char *) msgs[i].data, msgs[i].len);
- crypto_hash_update(&desc, sg, msgs[i].len);
- }
-
- for (i = 0; i < iovcnt; i++) {
- if (iovs[i].kiov_len == 0)
- continue;
-
- sg_init_table(sg, 1);
- sg_set_page(&sg[0], iovs[i].kiov_page, iovs[i].kiov_len,
- iovs[i].kiov_offset);
- crypto_hash_update(&desc, sg, iovs[i].kiov_len);
- }
-
- if (khdr) {
- buf_to_sg(sg, (char *) khdr, sizeof(*khdr));
- crypto_hash_update(&desc, sg, sizeof(*khdr));
- }
-
- return crypto_hash_final(&desc, cksum->data);
-}
-
-static inline
-int krb5_digest_norm(struct crypto_hash *tfm,
- struct krb5_keyblock *kb,
- struct krb5_header *khdr,
- int msgcnt, rawobj_t *msgs,
- int iovcnt, lnet_kiov_t *iovs,
- rawobj_t *cksum)
-{
- struct hash_desc desc;
- struct scatterlist sg[1];
- int i;
-
- LASSERT(kb->kb_tfm);
- desc.tfm = tfm;
- desc.flags= 0;
-
- crypto_hash_init(&desc);
-
- for (i = 0; i < msgcnt; i++) {
- if (msgs[i].len == 0)
- continue;
- buf_to_sg(sg, (char *) msgs[i].data, msgs[i].len);
- crypto_hash_update(&desc, sg, msgs[i].len);
- }
-
- for (i = 0; i < iovcnt; i++) {
- if (iovs[i].kiov_len == 0)
- continue;
-
- sg_init_table(sg, 1);
- sg_set_page(&sg[0], iovs[i].kiov_page, iovs[i].kiov_len,
- iovs[i].kiov_offset);
- crypto_hash_update(&desc, sg, iovs[i].kiov_len);
- }
-
- if (khdr) {
- buf_to_sg(sg, (char *) khdr, sizeof(*khdr));
- crypto_hash_update(&desc, sg, sizeof(*khdr));
- }
-
- crypto_hash_final(&desc, cksum->data);
-
- return krb5_encrypt(kb->kb_tfm, 0, NULL, cksum->data,
- cksum->data, cksum->len);
-}
-
/*
* compute (keyed/keyless) checksum against the plain text which appended
* with krb5 wire token header.
*/
static
__s32 krb5_make_checksum(__u32 enctype,
- struct krb5_keyblock *kb,
- struct krb5_header *khdr,
- int msgcnt, rawobj_t *msgs,
- int iovcnt, lnet_kiov_t *iovs,
- rawobj_t *cksum)
+ struct gss_keyblock *kb,
+ struct krb5_header *khdr,
+ int msgcnt, rawobj_t *msgs,
+ int iovcnt, lnet_kiov_t *iovs,
+ rawobj_t *cksum)
{
struct krb5_enctype *ke = &enctypes[enctype];
struct crypto_hash *tfm;
+ rawobj_t hdr;
__u32 code = GSS_S_FAILURE;
int rc;
goto out_tfm;
}
+ hdr.data = (__u8 *)khdr;
+ hdr.len = sizeof(*khdr);
+
if (ke->ke_hash_hmac)
- rc = krb5_digest_hmac(tfm, &kb->kb_key,
- khdr, msgcnt, msgs, iovcnt, iovs, cksum);
+ rc = gss_digest_hmac(tfm, &kb->kb_key,
+ &hdr, msgcnt, msgs, iovcnt, iovs, cksum);
else
- rc = krb5_digest_norm(tfm, kb,
- khdr, msgcnt, msgs, iovcnt, iovs, cksum);
+ rc = gss_digest_norm(tfm, kb,
+ &hdr, msgcnt, msgs, iovcnt, iovs, cksum);
if (rc == 0)
code = GSS_S_COMPLETE;
/* fill krb5 header */
LASSERT(token->len >= sizeof(*khdr));
- khdr = (struct krb5_header *) token->data;
+ khdr = (struct krb5_header *)token->data;
fill_krb5_header(kctx, khdr, 0);
/* checksum */
return GSS_S_DEFECTIVE_TOKEN;
}
- khdr = (struct krb5_header *) token->data;
+ khdr = (struct krb5_header *)token->data;
major = verify_krb5_header(kctx, khdr, 0);
if (major != GSS_S_COMPLETE) {
return GSS_S_COMPLETE;
}
-static
-int add_padding(rawobj_t *msg, int msg_buflen, int blocksize)
-{
- int padding;
-
- padding = (blocksize - (msg->len & (blocksize - 1))) &
- (blocksize - 1);
- if (!padding)
- return 0;
-
- if (msg->len + padding > msg_buflen) {
- CERROR("bufsize %u too small: datalen %u, padding %u\n",
- msg_buflen, msg->len, padding);
- return -EINVAL;
- }
-
- memset(msg->data + msg->len, padding, padding);
- msg->len += padding;
- return 0;
-}
-
-static
-int krb5_encrypt_rawobjs(struct crypto_blkcipher *tfm,
- int mode_ecb,
- int inobj_cnt,
- rawobj_t *inobjs,
- rawobj_t *outobj,
- int enc)
-{
- struct blkcipher_desc desc;
- struct scatterlist src, dst;
- __u8 local_iv[16] = {0}, *buf;
- __u32 datalen = 0;
- int i, rc;
- ENTRY;
-
- buf = outobj->data;
- desc.tfm = tfm;
- desc.info = local_iv;
- desc.flags = 0;
-
- for (i = 0; i < inobj_cnt; i++) {
- LASSERT(buf + inobjs[i].len <= outobj->data + outobj->len);
-
- buf_to_sg(&src, inobjs[i].data, inobjs[i].len);
- buf_to_sg(&dst, buf, outobj->len - datalen);
-
- if (mode_ecb) {
- if (enc)
- rc = crypto_blkcipher_encrypt(
- &desc, &dst, &src, src.length);
- else
- rc = crypto_blkcipher_decrypt(
- &desc, &dst, &src, src.length);
- } else {
- if (enc)
- rc = crypto_blkcipher_encrypt_iv(
- &desc, &dst, &src, src.length);
- else
- rc = crypto_blkcipher_decrypt_iv(
- &desc, &dst, &src, src.length);
- }
-
- if (rc) {
- CERROR("encrypt error %d\n", rc);
- RETURN(rc);
- }
-
- datalen += inobjs[i].len;
- buf += inobjs[i].len;
- }
-
- outobj->len = datalen;
- RETURN(0);
-}
-
/*
* if adj_nob != 0, we adjust desc->bd_nob to the actual cipher text size.
*/
struct blkcipher_desc ciph_desc;
__u8 local_iv[16] = {0};
struct scatterlist src, dst;
+ struct sg_table sg_src, sg_dst;
int blocksize, i, rc, nob = 0;
LASSERT(ptlrpc_is_bulk_desc_kiov(desc->bd_type));
ciph_desc.flags = 0;
/* encrypt confounder */
- buf_to_sg(&src, confounder, blocksize);
- buf_to_sg(&dst, cipher->data, blocksize);
+ rc = gss_setup_sgtable(&sg_src, &src, confounder, blocksize);
+ if (rc != 0)
+ return rc;
+
+ rc = gss_setup_sgtable(&sg_dst, &dst, cipher->data, blocksize);
+ if (rc != 0) {
+ gss_teardown_sgtable(&sg_src);
+ return rc;
+ }
+
+ rc = crypto_blkcipher_encrypt_iv(&ciph_desc, sg_dst.sgl,
+ sg_src.sgl, blocksize);
+
+ gss_teardown_sgtable(&sg_dst);
+ gss_teardown_sgtable(&sg_src);
- rc = crypto_blkcipher_encrypt_iv(&ciph_desc, &dst, &src, blocksize);
if (rc) {
CERROR("error to encrypt confounder: %d\n", rc);
return rc;
}
/* encrypt krb5 header */
- buf_to_sg(&src, khdr, sizeof(*khdr));
- buf_to_sg(&dst, cipher->data + blocksize, sizeof(*khdr));
+ rc = gss_setup_sgtable(&sg_src, &src, khdr, sizeof(*khdr));
+ if (rc != 0)
+ return rc;
+
+ rc = gss_setup_sgtable(&sg_dst, &dst, cipher->data + blocksize,
+ sizeof(*khdr));
+ if (rc != 0) {
+ gss_teardown_sgtable(&sg_src);
+ return rc;
+ }
- rc = crypto_blkcipher_encrypt_iv(&ciph_desc, &dst, &src,
+ rc = crypto_blkcipher_encrypt_iv(&ciph_desc, sg_dst.sgl, sg_src.sgl,
sizeof(*khdr));
+
+ gss_teardown_sgtable(&sg_dst);
+ gss_teardown_sgtable(&sg_src);
+
if (rc) {
CERROR("error to encrypt krb5 header: %d\n", rc);
return rc;
struct blkcipher_desc ciph_desc;
__u8 local_iv[16] = {0};
struct scatterlist src, dst;
+ struct sg_table sg_src, sg_dst;
int ct_nob = 0, pt_nob = 0;
int blocksize, i, rc;
}
/* decrypt head (confounder) */
- buf_to_sg(&src, cipher->data, blocksize);
- buf_to_sg(&dst, plain->data, blocksize);
+ rc = gss_setup_sgtable(&sg_src, &src, cipher->data, blocksize);
+ if (rc != 0)
+ return rc;
+
+ rc = gss_setup_sgtable(&sg_dst, &dst, plain->data, blocksize);
+ if (rc != 0) {
+ gss_teardown_sgtable(&sg_src);
+ return rc;
+ }
+
+ rc = crypto_blkcipher_decrypt_iv(&ciph_desc, sg_dst.sgl,
+ sg_src.sgl, blocksize);
+
+ gss_teardown_sgtable(&sg_dst);
+ gss_teardown_sgtable(&sg_src);
- rc = crypto_blkcipher_decrypt_iv(&ciph_desc, &dst, &src, blocksize);
if (rc) {
CERROR("error to decrypt confounder: %d\n", rc);
return rc;
BD_GET_KIOV(desc, i++).kiov_len = 0;
/* decrypt tail (krb5 header) */
- buf_to_sg(&src, cipher->data + blocksize, sizeof(*khdr));
- buf_to_sg(&dst, cipher->data + blocksize, sizeof(*khdr));
+ rc = gss_setup_sgtable(&sg_src, &src, cipher->data + blocksize,
+ sizeof(*khdr));
+ if (rc != 0)
+ return rc;
+
+ rc = gss_setup_sgtable(&sg_dst, &dst, cipher->data + blocksize,
+ sizeof(*khdr));
+ if (rc != 0) {
+ gss_teardown_sgtable(&sg_src);
+ return rc;
+ }
- rc = crypto_blkcipher_decrypt_iv(&ciph_desc, &dst, &src,
+ rc = crypto_blkcipher_decrypt_iv(&ciph_desc, sg_dst.sgl, sg_src.sgl,
sizeof(*khdr));
+
+ gss_teardown_sgtable(&sg_src);
+ gss_teardown_sgtable(&sg_dst);
+
if (rc) {
CERROR("error to decrypt tail: %d\n", rc);
return rc;
rawobj_t cksum = RAWOBJ_EMPTY;
rawobj_t data_desc[3], cipher;
__u8 conf[GSS_MAX_CIPHER_BLOCK];
+ __u8 local_iv[16] = {0};
int rc = 0;
LASSERT(ke);
/* fill krb5 header */
LASSERT(token->len >= sizeof(*khdr));
- khdr = (struct krb5_header *) token->data;
+ khdr = (struct krb5_header *)token->data;
fill_krb5_header(kctx, khdr, 1);
/* generate confounder */
}
LASSERT(blocksize <= ke->ke_conf_size);
- /* padding the message */
- if (add_padding(msg, msg_buflen, blocksize))
- return GSS_S_FAILURE;
+ /* padding the message */
+ if (gss_add_padding(msg, msg_buflen, blocksize))
+ return GSS_S_FAILURE;
/*
* clear text layout for checksum:
data_desc[2].len = sizeof(*khdr);
/* cipher text will be directly inplace */
- cipher.data = (__u8 *) (khdr + 1);
+ cipher.data = (__u8 *)(khdr + 1);
cipher.len = token->len - sizeof(*khdr);
LASSERT(cipher.len >= ke->ke_conf_size + msg->len + sizeof(*khdr));
GOTO(arc4_out_tfm, rc = -EACCES);
}
- rc = krb5_encrypt_rawobjs(arc4_tfm, 1,
- 3, data_desc, &cipher, 1);
+ rc = gss_crypt_rawobjs(arc4_tfm, NULL, 3, data_desc,
+ &cipher, 1);
arc4_out_tfm:
crypto_free_blkcipher(arc4_tfm);
arc4_out_key:
arc4_out:
do {} while(0); /* just to avoid compile warning */
} else {
- rc = krb5_encrypt_rawobjs(kctx->kc_keye.kb_tfm, 0,
- 3, data_desc, &cipher, 1);
+ rc = gss_crypt_rawobjs(kctx->kc_keye.kb_tfm, local_iv, 3,
+ data_desc, &cipher, 1);
}
if (rc != 0) {
/* fill krb5 header */
LASSERT(token->len >= sizeof(*khdr));
- khdr = (struct krb5_header *) token->data;
+ khdr = (struct krb5_header *)token->data;
fill_krb5_header(kctx, khdr, 1);
/* generate confounder */
data_desc[0].data = conf;
data_desc[0].len = ke->ke_conf_size;
- cipher.data = (__u8 *) (khdr + 1);
+ cipher.data = (__u8 *)(khdr + 1);
cipher.len = blocksize + sizeof(*khdr);
if (kctx->kc_enctype == ENCTYPE_ARCFOUR_HMAC) {
rawobj_t hash_objs[3];
int rc = 0;
__u32 major;
+ __u8 local_iv[16] = {0};
LASSERT(ke);
return GSS_S_DEFECTIVE_TOKEN;
}
- khdr = (struct krb5_header *) token->data;
+ khdr = (struct krb5_header *)token->data;
major = verify_krb5_header(kctx, khdr, 1);
if (major != GSS_S_COMPLETE) {
major = GSS_S_FAILURE;
- cipher_in.data = (__u8 *) (khdr + 1);
+ cipher_in.data = (__u8 *)(khdr + 1);
cipher_in.len = bodysize;
plain_out.data = tmpbuf;
plain_out.len = bodysize;
GOTO(arc4_out_tfm, rc = -EACCES);
}
- rc = krb5_encrypt_rawobjs(arc4_tfm, 1,
- 1, &cipher_in, &plain_out, 0);
+ rc = gss_crypt_rawobjs(arc4_tfm, NULL, 1, &cipher_in,
+ &plain_out, 0);
arc4_out_tfm:
crypto_free_blkcipher(arc4_tfm);
arc4_out_key:
arc4_out:
cksum = RAWOBJ_EMPTY;
} else {
- rc = krb5_encrypt_rawobjs(kctx->kc_keye.kb_tfm, 0,
- 1, &cipher_in, &plain_out, 0);
+ rc = gss_crypt_rawobjs(kctx->kc_keye.kb_tfm, local_iv, 1,
+ &cipher_in, &plain_out, 0);
}
if (rc != 0) {
return GSS_S_DEFECTIVE_TOKEN;
}
- khdr = (struct krb5_header *) token->data;
+ khdr = (struct krb5_header *)token->data;
major = verify_krb5_header(kctx, khdr, 1);
if (major != GSS_S_COMPLETE) {
},
};
-/*
- * currently we leave module owner NULL
- */
static struct gss_api_mech gss_kerberos_mech = {
- .gm_owner = NULL, /*THIS_MODULE, */
+ /* .gm_owner uses default NULL value for THIS_MODULE */
.gm_name = "krb5",
.gm_oid = (rawobj_t)
{9, "\052\206\110\206\367\022\001\002\002"},
git://git.whamcloud.com / fs / lustre-release.git / blobdiff