svn commit: r214254 - stable/8/sys/opencrypto
Pawel Jakub Dawidek
pjd at FreeBSD.org
Sat Oct 23 22:11:30 UTC 2010
Author: pjd
Date: Sat Oct 23 22:11:30 2010
New Revision: 214254
URL: http://svn.freebsd.org/changeset/base/214254
Log:
MFC r213065,r213068:
r213065:
Remove redundant space.
r213068:
Add support for AES-XTS.
Obtained from: OpenBSD
Modified:
stable/8/sys/opencrypto/cryptodev.c
stable/8/sys/opencrypto/cryptodev.h
stable/8/sys/opencrypto/cryptosoft.c
stable/8/sys/opencrypto/xform.c
stable/8/sys/opencrypto/xform.h
Directory Properties:
stable/8/sys/ (props changed)
stable/8/sys/amd64/include/xen/ (props changed)
stable/8/sys/cddl/contrib/opensolaris/ (props changed)
stable/8/sys/contrib/dev/acpica/ (props changed)
stable/8/sys/contrib/pf/ (props changed)
stable/8/sys/dev/xen/xenpci/ (props changed)
Modified: stable/8/sys/opencrypto/cryptodev.c
==============================================================================
--- stable/8/sys/opencrypto/cryptodev.c Sat Oct 23 22:04:37 2010 (r214253)
+++ stable/8/sys/opencrypto/cryptodev.c Sat Oct 23 22:11:30 2010 (r214254)
@@ -419,6 +419,9 @@ cryptof_ioctl(
case CRYPTO_AES_CBC:
txform = &enc_xform_rijndael128;
break;
+ case CRYPTO_AES_XTS:
+ txform = &enc_xform_aes_xts;
+ break;
case CRYPTO_NULL_CBC:
txform = &enc_xform_null;
break;
Modified: stable/8/sys/opencrypto/cryptodev.h
==============================================================================
--- stable/8/sys/opencrypto/cryptodev.h Sat Oct 23 22:04:37 2010 (r214253)
+++ stable/8/sys/opencrypto/cryptodev.h Sat Oct 23 22:11:30 2010 (r214254)
@@ -123,7 +123,8 @@
#define CRYPTO_SHA2_384_HMAC 19
#define CRYPTO_SHA2_512_HMAC 20
#define CRYPTO_CAMELLIA_CBC 21
-#define CRYPTO_ALGORITHM_MAX 21 /* Keep updated - see below */
+#define CRYPTO_AES_XTS 22
+#define CRYPTO_ALGORITHM_MAX 22 /* Keep updated - see below */
/* Algorithm flags */
#define CRYPTO_ALG_FLAG_SUPPORTED 0x01 /* Algorithm is supported */
Modified: stable/8/sys/opencrypto/cryptosoft.c
==============================================================================
--- stable/8/sys/opencrypto/cryptosoft.c Sat Oct 23 22:04:37 2010 (r214253)
+++ stable/8/sys/opencrypto/cryptosoft.c Sat Oct 23 22:11:30 2010 (r214254)
@@ -114,8 +114,16 @@ swcr_encdec(struct cryptodesc *crd, stru
if (error)
return (error);
}
+
ivp = iv;
+ /*
+ * xforms that provide a reinit method perform all IV
+ * handling themselves.
+ */
+ if (exf->reinit)
+ exf->reinit(sw->sw_kschedule, iv);
+
if (flags & CRYPTO_F_IMBUF) {
struct mbuf *m = (struct mbuf *) buf;
@@ -135,7 +143,15 @@ swcr_encdec(struct cryptodesc *crd, stru
m_copydata(m, k, blks, blk);
/* Actual encryption/decryption */
- if (crd->crd_flags & CRD_F_ENCRYPT) {
+ if (exf->reinit) {
+ if (crd->crd_flags & CRD_F_ENCRYPT) {
+ exf->encrypt(sw->sw_kschedule,
+ blk);
+ } else {
+ exf->decrypt(sw->sw_kschedule,
+ blk);
+ }
+ } else if (crd->crd_flags & CRD_F_ENCRYPT) {
/* XOR with previous block */
for (j = 0; j < blks; j++)
blk[j] ^= ivp[j];
@@ -205,7 +221,15 @@ swcr_encdec(struct cryptodesc *crd, stru
idat = mtod(m, unsigned char *) + k;
while (m->m_len >= k + blks && i > 0) {
- if (crd->crd_flags & CRD_F_ENCRYPT) {
+ if (exf->reinit) {
+ if (crd->crd_flags & CRD_F_ENCRYPT) {
+ exf->encrypt(sw->sw_kschedule,
+ idat);
+ } else {
+ exf->decrypt(sw->sw_kschedule,
+ idat);
+ }
+ } else if (crd->crd_flags & CRD_F_ENCRYPT) {
/* XOR with previous block/IV */
for (j = 0; j < blks; j++)
idat[j] ^= ivp[j];
@@ -261,7 +285,15 @@ swcr_encdec(struct cryptodesc *crd, stru
cuio_copydata(uio, k, blks, blk);
/* Actual encryption/decryption */
- if (crd->crd_flags & CRD_F_ENCRYPT) {
+ if (exf->reinit) {
+ if (crd->crd_flags & CRD_F_ENCRYPT) {
+ exf->encrypt(sw->sw_kschedule,
+ blk);
+ } else {
+ exf->decrypt(sw->sw_kschedule,
+ blk);
+ }
+ } else if (crd->crd_flags & CRD_F_ENCRYPT) {
/* XOR with previous block */
for (j = 0; j < blks; j++)
blk[j] ^= ivp[j];
@@ -319,7 +351,15 @@ swcr_encdec(struct cryptodesc *crd, stru
idat = (char *)iov->iov_base + k;
while (iov->iov_len >= k + blks && i > 0) {
- if (crd->crd_flags & CRD_F_ENCRYPT) {
+ if (exf->reinit) {
+ if (crd->crd_flags & CRD_F_ENCRYPT) {
+ exf->encrypt(sw->sw_kschedule,
+ idat);
+ } else {
+ exf->decrypt(sw->sw_kschedule,
+ idat);
+ }
+ } else if (crd->crd_flags & CRD_F_ENCRYPT) {
/* XOR with previous block/IV */
for (j = 0; j < blks; j++)
idat[j] ^= ivp[j];
@@ -360,7 +400,15 @@ swcr_encdec(struct cryptodesc *crd, stru
return 0; /* Done with iovec encryption/decryption */
} else { /* contiguous buffer */
- if (crd->crd_flags & CRD_F_ENCRYPT) {
+ if (exf->reinit) {
+ for (i = crd->crd_skip;
+ i < crd->crd_skip + crd->crd_len; i += blks) {
+ if (crd->crd_flags & CRD_F_ENCRYPT)
+ exf->encrypt(sw->sw_kschedule, buf + i);
+ else
+ exf->decrypt(sw->sw_kschedule, buf + i);
+ }
+ } else if (crd->crd_flags & CRD_F_ENCRYPT) {
for (i = crd->crd_skip;
i < crd->crd_skip + crd->crd_len; i += blks) {
/* XOR with the IV/previous block, as appropriate. */
@@ -687,6 +735,9 @@ swcr_newsession(device_t dev, u_int32_t
case CRYPTO_RIJNDAEL128_CBC:
txf = &enc_xform_rijndael128;
goto enccommon;
+ case CRYPTO_AES_XTS:
+ txf = &enc_xform_aes_xts;
+ goto enccommon;
case CRYPTO_CAMELLIA_CBC:
txf = &enc_xform_camellia;
goto enccommon;
@@ -845,6 +896,7 @@ swcr_freesession(device_t dev, u_int64_t
case CRYPTO_CAST_CBC:
case CRYPTO_SKIPJACK_CBC:
case CRYPTO_RIJNDAEL128_CBC:
+ case CRYPTO_AES_XTS:
case CRYPTO_CAMELLIA_CBC:
case CRYPTO_NULL_CBC:
txf = swd->sw_exf;
@@ -958,6 +1010,7 @@ swcr_process(device_t dev, struct crypto
case CRYPTO_CAST_CBC:
case CRYPTO_SKIPJACK_CBC:
case CRYPTO_RIJNDAEL128_CBC:
+ case CRYPTO_AES_XTS:
case CRYPTO_CAMELLIA_CBC:
if ((crp->crp_etype = swcr_encdec(crd, sw,
crp->crp_buf, crp->crp_flags)) != 0)
@@ -1050,6 +1103,7 @@ swcr_attach(device_t dev)
REGISTER(CRYPTO_MD5);
REGISTER(CRYPTO_SHA1);
REGISTER(CRYPTO_RIJNDAEL128_CBC);
+ REGISTER(CRYPTO_AES_XTS);
REGISTER(CRYPTO_CAMELLIA_CBC);
REGISTER(CRYPTO_DEFLATE_COMP);
#undef REGISTER
Modified: stable/8/sys/opencrypto/xform.c
==============================================================================
--- stable/8/sys/opencrypto/xform.c Sat Oct 23 22:04:37 2010 (r214253)
+++ stable/8/sys/opencrypto/xform.c Sat Oct 23 22:11:30 2010 (r214254)
@@ -64,40 +64,48 @@ __FBSDID("$FreeBSD$");
#include <opencrypto/cryptodev.h>
#include <opencrypto/xform.h>
-static void null_encrypt(caddr_t, u_int8_t *);
-static void null_decrypt(caddr_t, u_int8_t *);
-static int null_setkey(u_int8_t **, u_int8_t *, int);
-static void null_zerokey(u_int8_t **);
-
+static int null_setkey(u_int8_t **, u_int8_t *, int);
static int des1_setkey(u_int8_t **, u_int8_t *, int);
static int des3_setkey(u_int8_t **, u_int8_t *, int);
static int blf_setkey(u_int8_t **, u_int8_t *, int);
static int cast5_setkey(u_int8_t **, u_int8_t *, int);
static int skipjack_setkey(u_int8_t **, u_int8_t *, int);
static int rijndael128_setkey(u_int8_t **, u_int8_t *, int);
+static int aes_xts_setkey(u_int8_t **, u_int8_t *, int);
static int cml_setkey(u_int8_t **, u_int8_t *, int);
+
+static void null_encrypt(caddr_t, u_int8_t *);
static void des1_encrypt(caddr_t, u_int8_t *);
static void des3_encrypt(caddr_t, u_int8_t *);
static void blf_encrypt(caddr_t, u_int8_t *);
static void cast5_encrypt(caddr_t, u_int8_t *);
static void skipjack_encrypt(caddr_t, u_int8_t *);
static void rijndael128_encrypt(caddr_t, u_int8_t *);
+static void aes_xts_encrypt(caddr_t, u_int8_t *);
static void cml_encrypt(caddr_t, u_int8_t *);
+
+static void null_decrypt(caddr_t, u_int8_t *);
static void des1_decrypt(caddr_t, u_int8_t *);
static void des3_decrypt(caddr_t, u_int8_t *);
static void blf_decrypt(caddr_t, u_int8_t *);
static void cast5_decrypt(caddr_t, u_int8_t *);
static void skipjack_decrypt(caddr_t, u_int8_t *);
static void rijndael128_decrypt(caddr_t, u_int8_t *);
+static void aes_xts_decrypt(caddr_t, u_int8_t *);
static void cml_decrypt(caddr_t, u_int8_t *);
+
+static void null_zerokey(u_int8_t **);
static void des1_zerokey(u_int8_t **);
static void des3_zerokey(u_int8_t **);
static void blf_zerokey(u_int8_t **);
static void cast5_zerokey(u_int8_t **);
static void skipjack_zerokey(u_int8_t **);
static void rijndael128_zerokey(u_int8_t **);
+static void aes_xts_zerokey(u_int8_t **);
static void cml_zerokey(u_int8_t **);
+static void aes_xts_reinit(caddr_t, u_int8_t *);
+
static void null_init(void *);
static int null_update(void *, u_int8_t *, u_int16_t);
static void null_final(u_int8_t *, void *);
@@ -124,6 +132,7 @@ struct enc_xform enc_xform_null = {
null_decrypt,
null_setkey,
null_zerokey,
+ NULL
};
struct enc_xform enc_xform_des = {
@@ -133,6 +142,7 @@ struct enc_xform enc_xform_des = {
des1_decrypt,
des1_setkey,
des1_zerokey,
+ NULL
};
struct enc_xform enc_xform_3des = {
@@ -141,7 +151,8 @@ struct enc_xform enc_xform_3des = {
des3_encrypt,
des3_decrypt,
des3_setkey,
- des3_zerokey
+ des3_zerokey,
+ NULL
};
struct enc_xform enc_xform_blf = {
@@ -150,7 +161,8 @@ struct enc_xform enc_xform_blf = {
blf_encrypt,
blf_decrypt,
blf_setkey,
- blf_zerokey
+ blf_zerokey,
+ NULL
};
struct enc_xform enc_xform_cast5 = {
@@ -159,7 +171,8 @@ struct enc_xform enc_xform_cast5 = {
cast5_encrypt,
cast5_decrypt,
cast5_setkey,
- cast5_zerokey
+ cast5_zerokey,
+ NULL
};
struct enc_xform enc_xform_skipjack = {
@@ -168,7 +181,8 @@ struct enc_xform enc_xform_skipjack = {
skipjack_encrypt,
skipjack_decrypt,
skipjack_setkey,
- skipjack_zerokey
+ skipjack_zerokey,
+ NULL
};
struct enc_xform enc_xform_rijndael128 = {
@@ -178,6 +192,17 @@ struct enc_xform enc_xform_rijndael128 =
rijndael128_decrypt,
rijndael128_setkey,
rijndael128_zerokey,
+ NULL
+};
+
+struct enc_xform enc_xform_aes_xts = {
+ CRYPTO_AES_XTS, "AES-XTS",
+ RIJNDAEL128_BLOCK_LEN, 32, 64,
+ aes_xts_encrypt,
+ aes_xts_decrypt,
+ aes_xts_setkey,
+ aes_xts_zerokey,
+ aes_xts_reinit
};
struct enc_xform enc_xform_arc4 = {
@@ -187,6 +212,7 @@ struct enc_xform enc_xform_arc4 = {
NULL,
NULL,
NULL,
+ NULL
};
struct enc_xform enc_xform_camellia = {
@@ -196,6 +222,7 @@ struct enc_xform enc_xform_camellia = {
cml_decrypt,
cml_setkey,
cml_zerokey,
+ NULL
};
/* Authentication instances */
@@ -226,7 +253,7 @@ struct auth_hash auth_hash_hmac_ripemd_1
};
struct auth_hash auth_hash_key_md5 = {
- CRYPTO_MD5_KPDK, "Keyed MD5",
+ CRYPTO_MD5_KPDK, "Keyed MD5",
0, MD5_KPDK_HASH_LEN, 0, sizeof(MD5_CTX),
(void (*)(void *)) MD5Init, MD5Update_int,
(void (*)(u_int8_t *, void *)) MD5Final
@@ -547,6 +574,107 @@ rijndael128_zerokey(u_int8_t **sched)
*sched = NULL;
}
+#define AES_XTS_BLOCKSIZE 16
+#define AES_XTS_IVSIZE 8
+#define AES_XTS_ALPHA 0x87 /* GF(2^128) generator polynomial */
+
+struct aes_xts_ctx {
+ rijndael_ctx key1;
+ rijndael_ctx key2;
+ u_int8_t tweak[AES_XTS_BLOCKSIZE];
+};
+
+void
+aes_xts_reinit(caddr_t key, u_int8_t *iv)
+{
+ struct aes_xts_ctx *ctx = (struct aes_xts_ctx *)key;
+ u_int64_t blocknum;
+ u_int i;
+
+ /*
+ * Prepare tweak as E_k2(IV). IV is specified as LE representation
+ * of a 64-bit block number which we allow to be passed in directly.
+ */
+ bcopy(iv, &blocknum, AES_XTS_IVSIZE);
+ for (i = 0; i < AES_XTS_IVSIZE; i++) {
+ ctx->tweak[i] = blocknum & 0xff;
+ blocknum >>= 8;
+ }
+ /* Last 64 bits of IV are always zero */
+ bzero(ctx->tweak + AES_XTS_IVSIZE, AES_XTS_IVSIZE);
+
+ rijndael_encrypt(&ctx->key2, ctx->tweak, ctx->tweak);
+}
+
+static void
+aes_xts_crypt(struct aes_xts_ctx *ctx, u_int8_t *data, u_int do_encrypt)
+{
+ u_int8_t block[AES_XTS_BLOCKSIZE];
+ u_int i, carry_in, carry_out;
+
+ for (i = 0; i < AES_XTS_BLOCKSIZE; i++)
+ block[i] = data[i] ^ ctx->tweak[i];
+
+ if (do_encrypt)
+ rijndael_encrypt(&ctx->key1, block, data);
+ else
+ rijndael_decrypt(&ctx->key1, block, data);
+
+ for (i = 0; i < AES_XTS_BLOCKSIZE; i++)
+ data[i] ^= ctx->tweak[i];
+
+ /* Exponentiate tweak */
+ carry_in = 0;
+ for (i = 0; i < AES_XTS_BLOCKSIZE; i++) {
+ carry_out = ctx->tweak[i] & 0x80;
+ ctx->tweak[i] = (ctx->tweak[i] << 1) | (carry_in ? 1 : 0);
+ carry_in = carry_out;
+ }
+ if (carry_in)
+ ctx->tweak[0] ^= AES_XTS_ALPHA;
+ bzero(block, sizeof(block));
+}
+
+void
+aes_xts_encrypt(caddr_t key, u_int8_t *data)
+{
+ aes_xts_crypt((struct aes_xts_ctx *)key, data, 1);
+}
+
+void
+aes_xts_decrypt(caddr_t key, u_int8_t *data)
+{
+ aes_xts_crypt((struct aes_xts_ctx *)key, data, 0);
+}
+
+int
+aes_xts_setkey(u_int8_t **sched, u_int8_t *key, int len)
+{
+ struct aes_xts_ctx *ctx;
+
+ if (len != 32 && len != 64)
+ return EINVAL;
+
+ *sched = malloc(sizeof(struct aes_xts_ctx), M_CRYPTO_DATA,
+ M_NOWAIT | M_ZERO);
+ if (*sched == NULL)
+ return ENOMEM;
+ ctx = (struct aes_xts_ctx *)*sched;
+
+ rijndael_set_key(&ctx->key1, key, len * 4);
+ rijndael_set_key(&ctx->key2, key + (len / 2), len * 4);
+
+ return 0;
+}
+
+void
+aes_xts_zerokey(u_int8_t **sched)
+{
+ bzero(*sched, sizeof(struct aes_xts_ctx));
+ free(*sched, M_CRYPTO_DATA);
+ *sched = NULL;
+}
+
static void
cml_encrypt(caddr_t key, u_int8_t *blk)
{
Modified: stable/8/sys/opencrypto/xform.h
==============================================================================
--- stable/8/sys/opencrypto/xform.h Sat Oct 23 22:04:37 2010 (r214253)
+++ stable/8/sys/opencrypto/xform.h Sat Oct 23 22:11:30 2010 (r214254)
@@ -54,6 +54,7 @@ struct enc_xform {
void (*decrypt) (caddr_t, u_int8_t *);
int (*setkey) (u_int8_t **, u_int8_t *, int len);
void (*zerokey) (u_int8_t **);
+ void (*reinit) (caddr_t, u_int8_t *);
};
struct comp_algo {
@@ -80,6 +81,7 @@ extern struct enc_xform enc_xform_blf;
extern struct enc_xform enc_xform_cast5;
extern struct enc_xform enc_xform_skipjack;
extern struct enc_xform enc_xform_rijndael128;
+extern struct enc_xform enc_xform_aes_xts;
extern struct enc_xform enc_xform_arc4;
extern struct enc_xform enc_xform_camellia;
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