1b0909d51a
Track session objects in the framework, and pass handles between the framework (OCF), consumers, and drivers. Avoid redundancy and complexity in individual drivers by allocating session memory in the framework and providing it to drivers in ::newsession(). Session handles are no longer integers with information encoded in various high bits. Use of the CRYPTO_SESID2FOO() macros should be replaced with the appropriate crypto_ses2foo() function on the opaque session handle. Convert OCF drivers (in particular, cryptosoft, as well as myriad others) to the opaque handle interface. Discard existing session tracking as much as possible (quick pass). There may be additional code ripe for deletion. Convert OCF consumers (ipsec, geom_eli, krb5, cryptodev) to handle-style interface. The conversion is largely mechnical. The change is documented in crypto.9. Inspired by https://lists.freebsd.org/pipermail/freebsd-arch/2018-January/018835.html . No objection from: ae (ipsec portion) Reported by: jhb
405 lines
11 KiB
C
405 lines
11 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2008 Isilon Inc http://www.isilon.com/
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* Authors: Doug Rabson <dfr@rabson.org>
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* Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/mutex.h>
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#include <sys/kobj.h>
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#include <sys/mbuf.h>
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#include <crypto/des/des.h>
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#include <opencrypto/cryptodev.h>
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#include <kgssapi/gssapi.h>
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#include <kgssapi/gssapi_impl.h>
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#include "kcrypto.h"
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#define DES3_FLAGS (CRYPTOCAP_F_HARDWARE | CRYPTOCAP_F_SOFTWARE)
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struct des3_state {
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struct mtx ds_lock;
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crypto_session_t ds_session;
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};
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static void
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des3_init(struct krb5_key_state *ks)
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{
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struct des3_state *ds;
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ds = malloc(sizeof(struct des3_state), M_GSSAPI, M_WAITOK|M_ZERO);
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mtx_init(&ds->ds_lock, "gss des3 lock", NULL, MTX_DEF);
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ks->ks_priv = ds;
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}
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static void
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des3_destroy(struct krb5_key_state *ks)
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{
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struct des3_state *ds = ks->ks_priv;
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if (ds->ds_session)
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crypto_freesession(ds->ds_session);
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mtx_destroy(&ds->ds_lock);
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free(ks->ks_priv, M_GSSAPI);
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}
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static void
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des3_set_key(struct krb5_key_state *ks, const void *in)
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{
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void *kp = ks->ks_key;
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struct des3_state *ds = ks->ks_priv;
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struct cryptoini cri[2];
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if (kp != in)
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bcopy(in, kp, ks->ks_class->ec_keylen);
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if (ds->ds_session)
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crypto_freesession(ds->ds_session);
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bzero(cri, sizeof(cri));
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cri[0].cri_alg = CRYPTO_SHA1_HMAC;
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cri[0].cri_klen = 192;
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cri[0].cri_mlen = 0;
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cri[0].cri_key = ks->ks_key;
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cri[0].cri_next = &cri[1];
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cri[1].cri_alg = CRYPTO_3DES_CBC;
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cri[1].cri_klen = 192;
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cri[1].cri_mlen = 0;
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cri[1].cri_key = ks->ks_key;
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cri[1].cri_next = NULL;
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crypto_newsession(&ds->ds_session, cri,
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CRYPTOCAP_F_HARDWARE | CRYPTOCAP_F_SOFTWARE);
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}
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static void
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des3_random_to_key(struct krb5_key_state *ks, const void *in)
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{
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uint8_t *outkey;
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const uint8_t *inkey;
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int subkey;
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for (subkey = 0, outkey = ks->ks_key, inkey = in; subkey < 3;
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subkey++, outkey += 8, inkey += 7) {
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/*
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* Expand 56 bits of random data to 64 bits as follows
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* (in the example, bit number 1 is the MSB of the 56
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* bits of random data):
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*
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* expanded =
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* 1 2 3 4 5 6 7 p
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* 9 10 11 12 13 14 15 p
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* 17 18 19 20 21 22 23 p
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* 25 26 27 28 29 30 31 p
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* 33 34 35 36 37 38 39 p
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* 41 42 43 44 45 46 47 p
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* 49 50 51 52 53 54 55 p
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* 56 48 40 32 24 16 8 p
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*/
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outkey[0] = inkey[0];
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outkey[1] = inkey[1];
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outkey[2] = inkey[2];
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outkey[3] = inkey[3];
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outkey[4] = inkey[4];
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outkey[5] = inkey[5];
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outkey[6] = inkey[6];
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outkey[7] = (((inkey[0] & 1) << 1)
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| ((inkey[1] & 1) << 2)
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| ((inkey[2] & 1) << 3)
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| ((inkey[3] & 1) << 4)
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| ((inkey[4] & 1) << 5)
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| ((inkey[5] & 1) << 6)
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| ((inkey[6] & 1) << 7));
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des_set_odd_parity((des_cblock *) outkey);
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if (des_is_weak_key((des_cblock *) outkey))
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outkey[7] ^= 0xf0;
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}
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des3_set_key(ks, ks->ks_key);
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}
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static int
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des3_crypto_cb(struct cryptop *crp)
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{
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int error;
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struct des3_state *ds = (struct des3_state *) crp->crp_opaque;
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if (crypto_ses2caps(ds->ds_session) & CRYPTOCAP_F_SYNC)
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return (0);
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error = crp->crp_etype;
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if (error == EAGAIN)
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error = crypto_dispatch(crp);
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mtx_lock(&ds->ds_lock);
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if (error || (crp->crp_flags & CRYPTO_F_DONE))
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wakeup(crp);
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mtx_unlock(&ds->ds_lock);
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return (0);
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}
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static void
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des3_encrypt_1(const struct krb5_key_state *ks, struct mbuf *inout,
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size_t skip, size_t len, void *ivec, int encdec)
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{
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struct des3_state *ds = ks->ks_priv;
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struct cryptop *crp;
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struct cryptodesc *crd;
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int error;
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crp = crypto_getreq(1);
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crd = crp->crp_desc;
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crd->crd_skip = skip;
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crd->crd_len = len;
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crd->crd_flags = CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT | encdec;
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if (ivec) {
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bcopy(ivec, crd->crd_iv, 8);
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} else {
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bzero(crd->crd_iv, 8);
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}
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crd->crd_next = NULL;
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crd->crd_alg = CRYPTO_3DES_CBC;
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crp->crp_session = ds->ds_session;
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crp->crp_flags = CRYPTO_F_IMBUF | CRYPTO_F_CBIFSYNC;
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crp->crp_buf = (void *) inout;
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crp->crp_opaque = (void *) ds;
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crp->crp_callback = des3_crypto_cb;
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error = crypto_dispatch(crp);
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if ((crypto_ses2caps(ds->ds_session) & CRYPTOCAP_F_SYNC) == 0) {
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mtx_lock(&ds->ds_lock);
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if (!error && !(crp->crp_flags & CRYPTO_F_DONE))
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error = msleep(crp, &ds->ds_lock, 0, "gssdes3", 0);
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mtx_unlock(&ds->ds_lock);
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}
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crypto_freereq(crp);
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}
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static void
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des3_encrypt(const struct krb5_key_state *ks, struct mbuf *inout,
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size_t skip, size_t len, void *ivec, size_t ivlen)
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{
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des3_encrypt_1(ks, inout, skip, len, ivec, CRD_F_ENCRYPT);
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}
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static void
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des3_decrypt(const struct krb5_key_state *ks, struct mbuf *inout,
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size_t skip, size_t len, void *ivec, size_t ivlen)
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{
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des3_encrypt_1(ks, inout, skip, len, ivec, 0);
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}
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static void
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des3_checksum(const struct krb5_key_state *ks, int usage,
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struct mbuf *inout, size_t skip, size_t inlen, size_t outlen)
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{
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struct des3_state *ds = ks->ks_priv;
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struct cryptop *crp;
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struct cryptodesc *crd;
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int error;
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crp = crypto_getreq(1);
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crd = crp->crp_desc;
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crd->crd_skip = skip;
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crd->crd_len = inlen;
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crd->crd_inject = skip + inlen;
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crd->crd_flags = 0;
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crd->crd_next = NULL;
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crd->crd_alg = CRYPTO_SHA1_HMAC;
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crp->crp_session = ds->ds_session;
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crp->crp_ilen = inlen;
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crp->crp_olen = 20;
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crp->crp_etype = 0;
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crp->crp_flags = CRYPTO_F_IMBUF | CRYPTO_F_CBIFSYNC;
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crp->crp_buf = (void *) inout;
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crp->crp_opaque = (void *) ds;
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crp->crp_callback = des3_crypto_cb;
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error = crypto_dispatch(crp);
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if ((crypto_ses2caps(ds->ds_session) & CRYPTOCAP_F_SYNC) == 0) {
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mtx_lock(&ds->ds_lock);
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if (!error && !(crp->crp_flags & CRYPTO_F_DONE))
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error = msleep(crp, &ds->ds_lock, 0, "gssdes3", 0);
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mtx_unlock(&ds->ds_lock);
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}
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crypto_freereq(crp);
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}
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struct krb5_encryption_class krb5_des3_encryption_class = {
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"des3-cbc-sha1", /* name */
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ETYPE_DES3_CBC_SHA1, /* etype */
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EC_DERIVED_KEYS, /* flags */
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8, /* blocklen */
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8, /* msgblocklen */
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20, /* checksumlen */
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168, /* keybits */
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24, /* keylen */
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des3_init,
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des3_destroy,
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des3_set_key,
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des3_random_to_key,
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des3_encrypt,
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des3_decrypt,
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des3_checksum
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};
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#if 0
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struct des3_dk_test {
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uint8_t key[24];
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uint8_t usage[8];
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size_t usagelen;
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uint8_t dk[24];
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};
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struct des3_dk_test tests[] = {
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{{0xdc, 0xe0, 0x6b, 0x1f, 0x64, 0xc8, 0x57, 0xa1, 0x1c, 0x3d, 0xb5,
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0x7c, 0x51, 0x89, 0x9b, 0x2c, 0xc1, 0x79, 0x10, 0x08, 0xce, 0x97,
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0x3b, 0x92},
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{0x00, 0x00, 0x00, 0x01, 0x55}, 5,
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{0x92, 0x51, 0x79, 0xd0, 0x45, 0x91, 0xa7, 0x9b, 0x5d, 0x31, 0x92,
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0xc4, 0xa7, 0xe9, 0xc2, 0x89, 0xb0, 0x49, 0xc7, 0x1f, 0x6e, 0xe6,
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0x04, 0xcd}},
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{{0x5e, 0x13, 0xd3, 0x1c, 0x70, 0xef, 0x76, 0x57, 0x46, 0x57, 0x85,
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0x31, 0xcb, 0x51, 0xc1, 0x5b, 0xf1, 0x1c, 0xa8, 0x2c, 0x97, 0xce,
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0xe9, 0xf2},
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{0x00, 0x00, 0x00, 0x01, 0xaa}, 5,
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{0x9e, 0x58, 0xe5, 0xa1, 0x46, 0xd9, 0x94, 0x2a, 0x10, 0x1c, 0x46,
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0x98, 0x45, 0xd6, 0x7a, 0x20, 0xe3, 0xc4, 0x25, 0x9e, 0xd9, 0x13,
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0xf2, 0x07}},
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{{0x98, 0xe6, 0xfd, 0x8a, 0x04, 0xa4, 0xb6, 0x85, 0x9b, 0x75, 0xa1,
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0x76, 0x54, 0x0b, 0x97, 0x52, 0xba, 0xd3, 0xec, 0xd6, 0x10, 0xa2,
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0x52, 0xbc},
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{0x00, 0x00, 0x00, 0x01, 0x55}, 5,
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{0x13, 0xfe, 0xf8, 0x0d, 0x76, 0x3e, 0x94, 0xec, 0x6d, 0x13, 0xfd,
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0x2c, 0xa1, 0xd0, 0x85, 0x07, 0x02, 0x49, 0xda, 0xd3, 0x98, 0x08,
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0xea, 0xbf}},
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{{0x62, 0x2a, 0xec, 0x25, 0xa2, 0xfe, 0x2c, 0xad, 0x70, 0x94, 0x68,
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0x0b, 0x7c, 0x64, 0x94, 0x02, 0x80, 0x08, 0x4c, 0x1a, 0x7c, 0xec,
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0x92, 0xb5},
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{0x00, 0x00, 0x00, 0x01, 0xaa}, 5,
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{0xf8, 0xdf, 0xbf, 0x04, 0xb0, 0x97, 0xe6, 0xd9, 0xdc, 0x07, 0x02,
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0x68, 0x6b, 0xcb, 0x34, 0x89, 0xd9, 0x1f, 0xd9, 0xa4, 0x51, 0x6b,
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0x70, 0x3e}},
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{{0xd3, 0xf8, 0x29, 0x8c, 0xcb, 0x16, 0x64, 0x38, 0xdc, 0xb9, 0xb9,
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0x3e, 0xe5, 0xa7, 0x62, 0x92, 0x86, 0xa4, 0x91, 0xf8, 0x38, 0xf8,
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0x02, 0xfb},
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{0x6b, 0x65, 0x72, 0x62, 0x65, 0x72, 0x6f, 0x73}, 8,
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{0x23, 0x70, 0xda, 0x57, 0x5d, 0x2a, 0x3d, 0xa8, 0x64, 0xce, 0xbf,
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0xdc, 0x52, 0x04, 0xd5, 0x6d, 0xf7, 0x79, 0xa7, 0xdf, 0x43, 0xd9,
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0xda, 0x43}},
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{{0xc1, 0x08, 0x16, 0x49, 0xad, 0xa7, 0x43, 0x62, 0xe6, 0xa1, 0x45,
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0x9d, 0x01, 0xdf, 0xd3, 0x0d, 0x67, 0xc2, 0x23, 0x4c, 0x94, 0x07,
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0x04, 0xda},
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{0x00, 0x00, 0x00, 0x01, 0x55}, 5,
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{0x34, 0x80, 0x57, 0xec, 0x98, 0xfd, 0xc4, 0x80, 0x16, 0x16, 0x1c,
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0x2a, 0x4c, 0x7a, 0x94, 0x3e, 0x92, 0xae, 0x49, 0x2c, 0x98, 0x91,
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0x75, 0xf7}},
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{{0x5d, 0x15, 0x4a, 0xf2, 0x38, 0xf4, 0x67, 0x13, 0x15, 0x57, 0x19,
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0xd5, 0x5e, 0x2f, 0x1f, 0x79, 0x0d, 0xd6, 0x61, 0xf2, 0x79, 0xa7,
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0x91, 0x7c},
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{0x00, 0x00, 0x00, 0x01, 0xaa}, 5,
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{0xa8, 0x80, 0x8a, 0xc2, 0x67, 0xda, 0xda, 0x3d, 0xcb, 0xe9, 0xa7,
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0xc8, 0x46, 0x26, 0xfb, 0xc7, 0x61, 0xc2, 0x94, 0xb0, 0x13, 0x15,
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0xe5, 0xc1}},
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{{0x79, 0x85, 0x62, 0xe0, 0x49, 0x85, 0x2f, 0x57, 0xdc, 0x8c, 0x34,
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0x3b, 0xa1, 0x7f, 0x2c, 0xa1, 0xd9, 0x73, 0x94, 0xef, 0xc8, 0xad,
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0xc4, 0x43},
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{0x00, 0x00, 0x00, 0x01, 0x55}, 5,
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{0xc8, 0x13, 0xf8, 0x8a, 0x3b, 0xe3, 0xb3, 0x34, 0xf7, 0x54, 0x25,
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0xce, 0x91, 0x75, 0xfb, 0xe3, 0xc8, 0x49, 0x3b, 0x89, 0xc8, 0x70,
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0x3b, 0x49}},
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{{0x26, 0xdc, 0xe3, 0x34, 0xb5, 0x45, 0x29, 0x2f, 0x2f, 0xea, 0xb9,
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0xa8, 0x70, 0x1a, 0x89, 0xa4, 0xb9, 0x9e, 0xb9, 0x94, 0x2c, 0xec,
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0xd0, 0x16},
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{0x00, 0x00, 0x00, 0x01, 0xaa}, 5,
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{0xf4, 0x8f, 0xfd, 0x6e, 0x83, 0xf8, 0x3e, 0x73, 0x54, 0xe6, 0x94,
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0xfd, 0x25, 0x2c, 0xf8, 0x3b, 0xfe, 0x58, 0xf7, 0xd5, 0xba, 0x37,
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0xec, 0x5d}},
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};
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#define N_TESTS (sizeof(tests) / sizeof(tests[0]))
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int
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main(int argc, char **argv)
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{
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struct krb5_key_state *key, *dk;
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uint8_t *dkp;
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int j, i;
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for (j = 0; j < N_TESTS; j++) {
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struct des3_dk_test *t = &tests[j];
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key = krb5_create_key(&des3_encryption_class);
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krb5_set_key(key, t->key);
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dk = krb5_derive_key(key, t->usage, t->usagelen);
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krb5_free_key(key);
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if (memcmp(dk->ks_key, t->dk, 24)) {
|
|
printf("DES3 dk(");
|
|
for (i = 0; i < 24; i++)
|
|
printf("%02x", t->key[i]);
|
|
printf(", ");
|
|
for (i = 0; i < t->usagelen; i++)
|
|
printf("%02x", t->usage[i]);
|
|
printf(") failed\n");
|
|
printf("should be: ");
|
|
for (i = 0; i < 24; i++)
|
|
printf("%02x", t->dk[i]);
|
|
printf("\n result was: ");
|
|
dkp = dk->ks_key;
|
|
for (i = 0; i < 24; i++)
|
|
printf("%02x", dkp[i]);
|
|
printf("\n");
|
|
}
|
|
krb5_free_key(dk);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
#endif
|