#include <linux/mutex.h>
#include <crypto/ctr.h>
-#include <libcfs/libcfs_crypto.h>
#include <obd.h>
#include <obd_class.h>
#include <obd_support.h>
#define SK_IV_REV_START (1ULL << 63)
struct sk_ctx {
- __u16 sc_pad;
+ __u16 sc_hmac;
__u16 sc_crypt;
__u32 sc_expire;
__u32 sc_host_random;
atomic64_t sc_iv;
rawobj_t sc_hmac_key;
struct gss_keyblock sc_session_kb;
- enum cfs_crypto_hash_alg sc_hmac;
};
struct sk_hdr {
static struct sk_crypt_type sk_crypt_types[] = {
[SK_CRYPT_AES256_CTR] = {
- .cht_name = "aes256",
- .cht_key = 0,
- .cht_bytes = 32,
+ .sct_name = "ctr(aes)",
+ .sct_bytes = 32,
+ },
+};
+
+static struct sk_hmac_type sk_hmac_types[] = {
+ [SK_HMAC_SHA256] = {
+ .sht_name = "hmac(sha256)",
+ .sht_bytes = 32,
+ },
+ [SK_HMAC_SHA512] = {
+ .sht_name = "hmac(sha512)",
+ .sht_bytes = 64,
},
};
static int sk_init_keys(struct sk_ctx *skc)
{
return gss_keyblock_init(&skc->sc_session_kb,
- sk_crypt_types[skc->sc_crypt].cht_name, 0);
+ sk_crypt_types[skc->sc_crypt].sct_name, 0);
}
static int sk_fill_context(rawobj_t *inbuf, struct sk_ctx *skc)
CERROR("Failed to read HMAC algorithm type");
return -1;
}
- if (skc->sc_hmac >= CFS_HASH_ALG_MAX) {
+ if (skc->sc_hmac <= SK_HMAC_EMPTY || skc->sc_hmac >= SK_HMAC_MAX) {
CERROR("Invalid hmac type: %d\n", skc->sc_hmac);
return -1;
}
}
static
-__u32 sk_make_hmac(const char *alg_name, rawobj_t *key, int msg_count,
- rawobj_t *msgs, int iov_count, lnet_kiov_t *iovs,
- rawobj_t *token)
+__u32 sk_make_hmac(char *alg_name, rawobj_t *key, int msg_count, rawobj_t *msgs,
+ int iov_count, lnet_kiov_t *iovs, rawobj_t *token)
{
- struct crypto_ahash *tfm;
+ struct crypto_hash *tfm;
int rc;
- tfm = crypto_alloc_ahash(alg_name, 0, CRYPTO_ALG_ASYNC);
+ tfm = crypto_alloc_hash(alg_name, 0, 0);
if (IS_ERR(tfm))
return GSS_S_FAILURE;
rc = GSS_S_FAILURE;
- LASSERT(token->len >= crypto_ahash_digestsize(tfm));
+ LASSERT(token->len >= crypto_hash_digestsize(tfm));
if (!gss_digest_hmac(tfm, key, NULL, msg_count, msgs, iov_count, iovs,
token))
rc = GSS_S_COMPLETE;
- crypto_free_ahash(tfm);
+ crypto_free_hash(tfm);
return rc;
}
rawobj_t *token)
{
struct sk_ctx *skc = gss_context->internal_ctx_id;
- return sk_make_hmac(cfs_crypto_hash_name(skc->sc_hmac),
+ return sk_make_hmac(sk_hmac_types[skc->sc_hmac].sht_name,
&skc->sc_hmac_key, message_count, messages,
iov_count, iovs, token);
}
static
-u32 sk_verify_hmac(enum cfs_crypto_hash_alg algo, rawobj_t *key,
- int message_count, rawobj_t *messages, int iov_count,
- lnet_kiov_t *iovs, rawobj_t *token)
+__u32 sk_verify_hmac(struct sk_hmac_type *sht, rawobj_t *key, int message_count,
+ rawobj_t *messages, int iov_count, lnet_kiov_t *iovs,
+ rawobj_t *token)
{
rawobj_t checksum = RAWOBJ_EMPTY;
__u32 rc = GSS_S_FAILURE;
- checksum.len = cfs_crypto_hash_digestsize(algo);
- /* What about checksum.len == 0 ??? */
-
+ checksum.len = sht->sht_bytes;
if (token->len < checksum.len) {
CDEBUG(D_SEC, "Token received too short, expected %d "
"received %d\n", token->len, checksum.len);
if (!checksum.data)
return rc;
- if (sk_make_hmac(cfs_crypto_hash_name(algo), key, message_count,
- messages, iov_count, iovs, &checksum)) {
+ if (sk_make_hmac(sht->sht_name, key, message_count, messages,
+ iov_count, iovs, &checksum)) {
CDEBUG(D_SEC, "Failed to create checksum to validate\n");
goto cleanup;
}
* to decrypt up to the number of bytes actually specified from the sender
* (bd_nob) otherwise the calulated HMAC will be incorrect. */
static
-__u32 sk_verify_bulk_hmac(enum cfs_crypto_hash_alg sc_hmac,
- rawobj_t *key, int msgcnt, rawobj_t *msgs,
- int iovcnt, lnet_kiov_t *iovs, int iov_bytes,
- rawobj_t *token)
+__u32 sk_verify_bulk_hmac(struct sk_hmac_type *sht, rawobj_t *key,
+ int msgcnt, rawobj_t *msgs, int iovcnt,
+ lnet_kiov_t *iovs, int iov_bytes, rawobj_t *token)
{
rawobj_t checksum = RAWOBJ_EMPTY;
- struct cfs_crypto_hash_desc *hdesc;
- int rc = GSS_S_FAILURE, i;
+ struct crypto_hash *tfm;
+ struct hash_desc desc = {
+ .tfm = NULL,
+ .flags = 0,
+ };
+ struct scatterlist sg[1];
+ struct sg_table sgt;
+ int bytes;
+ int i;
+ int rc = GSS_S_FAILURE;
- checksum.len = cfs_crypto_hash_digestsize(sc_hmac);
+ checksum.len = sht->sht_bytes;
if (token->len < checksum.len) {
CDEBUG(D_SEC, "Token received too short, expected %d "
"received %d\n", token->len, checksum.len);
if (!checksum.data)
return rc;
+ tfm = crypto_alloc_hash(sht->sht_name, 0, 0);
+ if (IS_ERR(tfm))
+ goto cleanup;
+
+ desc.tfm = tfm;
+
+ LASSERT(token->len >= crypto_hash_digestsize(tfm));
+
+ rc = crypto_hash_setkey(tfm, key->data, key->len);
+ if (rc)
+ goto hash_cleanup;
+
+ rc = crypto_hash_init(&desc);
+ if (rc)
+ goto hash_cleanup;
+
for (i = 0; i < msgcnt; i++) {
- if (!msgs[i].len)
+ if (msgs[i].len == 0)
continue;
- rc = cfs_crypto_hash_digest(sc_hmac, msgs[i].data, msgs[i].len,
- key->data, key->len,
- checksum.data, &checksum.len);
- if (rc)
- goto cleanup;
- }
+ rc = gss_setup_sgtable(&sgt, sg, msgs[i].data, msgs[i].len);
+ if (rc != 0)
+ goto hash_cleanup;
- hdesc = cfs_crypto_hash_init(sc_hmac, key->data, key->len);
- if (IS_ERR(hdesc)) {
- rc = PTR_ERR(hdesc);
- goto cleanup;
+ rc = crypto_hash_update(&desc, sg, msgs[i].len);
+ if (rc) {
+ gss_teardown_sgtable(&sgt);
+ goto hash_cleanup;
+ }
+
+ gss_teardown_sgtable(&sgt);
}
for (i = 0; i < iovcnt && iov_bytes > 0; i++) {
- int bytes;
-
if (iovs[i].kiov_len == 0)
continue;
bytes = min_t(int, iov_bytes, iovs[i].kiov_len);
iov_bytes -= bytes;
- rc = cfs_crypto_hash_update_page(hdesc, iovs[i].kiov_page,
- iovs[i].kiov_offset, bytes);
+
+ sg_init_table(sg, 1);
+ sg_set_page(&sg[0], iovs[i].kiov_page, bytes,
+ iovs[i].kiov_offset);
+ rc = crypto_hash_update(&desc, sg, bytes);
if (rc)
- goto cleanup;
+ goto hash_cleanup;
}
- rc = cfs_crypto_hash_final(hdesc, checksum.data, &checksum.len);
- if (rc)
- goto cleanup;
+ crypto_hash_final(&desc, checksum.data);
if (memcmp(token->data, checksum.data, checksum.len)) {
rc = GSS_S_BAD_SIG;
- goto cleanup;
+ goto hash_cleanup;
}
rc = GSS_S_COMPLETE;
+
+hash_cleanup:
+ crypto_free_hash(tfm);
+
cleanup:
OBD_FREE_LARGE(checksum.data, checksum.len);
rawobj_t *token)
{
struct sk_ctx *skc = gss_context->internal_ctx_id;
- return sk_verify_hmac(skc->sc_hmac, &skc->sc_hmac_key,
+ return sk_verify_hmac(&sk_hmac_types[skc->sc_hmac], &skc->sc_hmac_key,
message_count, messages, iov_count, iovs, token);
}
rawobj_t *token)
{
struct sk_ctx *skc = gss_context->internal_ctx_id;
- size_t sht_bytes = cfs_crypto_hash_digestsize(skc->sc_hmac);
+ struct sk_hmac_type *sht = &sk_hmac_types[skc->sc_hmac];
struct sk_wire skw;
struct sk_hdr skh;
rawobj_t msgbufs[3];
sk_construct_rfc3686_iv(local_iv, skc->sc_host_random, skh.skh_iv);
skw.skw_cipher.data = skw.skw_header.data + skw.skw_header.len;
- skw.skw_cipher.len = token->len - skw.skw_header.len - sht_bytes;
+ skw.skw_cipher.len = token->len - skw.skw_header.len - sht->sht_bytes;
if (gss_crypt_rawobjs(skc->sc_session_kb.kb_tfm, local_iv, 1, message,
&skw.skw_cipher, 1))
return GSS_S_FAILURE;
msgbufs[2] = skw.skw_cipher;
skw.skw_hmac.data = skw.skw_cipher.data + skw.skw_cipher.len;
- skw.skw_hmac.len = sht_bytes;
- if (sk_make_hmac(cfs_crypto_hash_name(skc->sc_hmac), &skc->sc_hmac_key,
- 3, msgbufs, 0, NULL, &skw.skw_hmac))
+ skw.skw_hmac.len = sht->sht_bytes;
+ if (sk_make_hmac(sht->sht_name, &skc->sc_hmac_key, 3, msgbufs, 0,
+ NULL, &skw.skw_hmac))
return GSS_S_FAILURE;
token->len = skw.skw_header.len + skw.skw_cipher.len + skw.skw_hmac.len;
rawobj_t *token, rawobj_t *message)
{
struct sk_ctx *skc = gss_context->internal_ctx_id;
- size_t sht_bytes = cfs_crypto_hash_digestsize(skc->sc_hmac);
+ struct sk_hmac_type *sht = &sk_hmac_types[skc->sc_hmac];
struct sk_wire skw;
struct sk_hdr *skh;
rawobj_t msgbufs[3];
LASSERT(skc->sc_session_kb.kb_tfm);
- if (token->len < sizeof(skh) + sht_bytes)
+ if (token->len < sizeof(skh) + sht->sht_bytes)
return GSS_S_DEFECTIVE_TOKEN;
skw.skw_header.data = token->data;
skw.skw_header.len = sizeof(struct sk_hdr);
skw.skw_cipher.data = skw.skw_header.data + skw.skw_header.len;
- skw.skw_cipher.len = token->len - skw.skw_header.len - sht_bytes;
+ skw.skw_cipher.len = token->len - skw.skw_header.len - sht->sht_bytes;
skw.skw_hmac.data = skw.skw_cipher.data + skw.skw_cipher.len;
- skw.skw_hmac.len = sht_bytes;
+ skw.skw_hmac.len = sht->sht_bytes;
blocksize = crypto_blkcipher_blocksize(skc->sc_session_kb.kb_tfm);
if (skw.skw_cipher.len % blocksize != 0)
msgbufs[0] = skw.skw_header;
msgbufs[1] = *gss_header;
msgbufs[2] = skw.skw_cipher;
- rc = sk_verify_hmac(skc->sc_hmac, &skc->sc_hmac_key, 3, msgbufs,
- 0, NULL, &skw.skw_hmac);
+ rc = sk_verify_hmac(sht, &skc->sc_hmac_key, 3, msgbufs, 0, NULL,
+ &skw.skw_hmac);
if (rc)
return rc;
int adj_nob)
{
struct sk_ctx *skc = gss_context->internal_ctx_id;
- size_t sht_bytes = cfs_crypto_hash_digestsize(skc->sc_hmac);
+ struct sk_hmac_type *sht = &sk_hmac_types[skc->sc_hmac];
struct sk_wire skw;
struct sk_hdr skh;
__u8 local_iv[SK_IV_SIZE];
sk_construct_rfc3686_iv(local_iv, skc->sc_host_random, skh.skh_iv);
skw.skw_cipher.data = skw.skw_header.data + skw.skw_header.len;
- skw.skw_cipher.len = token->len - skw.skw_header.len - sht_bytes;
+ skw.skw_cipher.len = token->len - skw.skw_header.len - sht->sht_bytes;
if (sk_encrypt_bulk(skc->sc_session_kb.kb_tfm, local_iv,
desc, &skw.skw_cipher, adj_nob))
return GSS_S_FAILURE;
skw.skw_hmac.data = skw.skw_cipher.data + skw.skw_cipher.len;
- skw.skw_hmac.len = sht_bytes;
- if (sk_make_hmac(cfs_crypto_hash_name(skc->sc_hmac), &skc->sc_hmac_key,
- 1, &skw.skw_cipher, desc->bd_iov_count,
- GET_ENC_KIOV(desc), &skw.skw_hmac))
+ skw.skw_hmac.len = sht->sht_bytes;
+ if (sk_make_hmac(sht->sht_name, &skc->sc_hmac_key, 1, &skw.skw_cipher,
+ desc->bd_iov_count, GET_ENC_KIOV(desc), &skw.skw_hmac))
return GSS_S_FAILURE;
return GSS_S_COMPLETE;
rawobj_t *token, int adj_nob)
{
struct sk_ctx *skc = gss_context->internal_ctx_id;
- size_t sht_bytes = cfs_crypto_hash_digestsize(skc->sc_hmac);
+ struct sk_hmac_type *sht = &sk_hmac_types[skc->sc_hmac];
struct sk_wire skw;
struct sk_hdr *skh;
__u8 local_iv[SK_IV_SIZE];
LASSERT(skc->sc_session_kb.kb_tfm);
- if (token->len < sizeof(skh) + sht_bytes)
+ if (token->len < sizeof(skh) + sht->sht_bytes)
return GSS_S_DEFECTIVE_TOKEN;
skw.skw_header.data = token->data;
skw.skw_header.len = sizeof(struct sk_hdr);
skw.skw_cipher.data = skw.skw_header.data + skw.skw_header.len;
- skw.skw_cipher.len = token->len - skw.skw_header.len - sht_bytes;
+ skw.skw_cipher.len = token->len - skw.skw_header.len - sht->sht_bytes;
skw.skw_hmac.data = skw.skw_cipher.data + skw.skw_cipher.len;
- skw.skw_hmac.len = cfs_crypto_hash_digestsize(skc->sc_hmac);
+ skw.skw_hmac.len = sht->sht_bytes;
skh = (struct sk_hdr *)skw.skw_header.data;
rc = sk_verify_header(skh);
if (rc != GSS_S_COMPLETE)
return rc;
- rc = sk_verify_bulk_hmac(skc->sc_hmac,
+ rc = sk_verify_bulk_hmac(&sk_hmac_types[skc->sc_hmac],
&skc->sc_hmac_key, 1, &skw.skw_cipher,
desc->bd_iov_count, GET_ENC_KIOV(desc),
desc->bd_nob, &skw.skw_hmac);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff