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-rw-r--r--sys/kgssapi/krb5/kcrypto_des3.c402
1 files changed, 402 insertions, 0 deletions
diff --git a/sys/kgssapi/krb5/kcrypto_des3.c b/sys/kgssapi/krb5/kcrypto_des3.c
new file mode 100644
index 0000000..ea39c10
--- /dev/null
+++ b/sys/kgssapi/krb5/kcrypto_des3.c
@@ -0,0 +1,402 @@
+/*-
+ * Copyright (c) 2008 Isilon Inc http://www.isilon.com/
+ * Authors: Doug Rabson <dfr@rabson.org>
+ * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/lock.h>
+#include <sys/malloc.h>
+#include <sys/mutex.h>
+#include <sys/kobj.h>
+#include <sys/mbuf.h>
+#include <crypto/des/des.h>
+#include <opencrypto/cryptodev.h>
+
+#include <kgssapi/gssapi.h>
+#include <kgssapi/gssapi_impl.h>
+
+#include "kcrypto.h"
+
+#define DES3_FLAGS (CRYPTOCAP_F_HARDWARE | CRYPTOCAP_F_SOFTWARE)
+
+struct des3_state {
+ struct mtx ds_lock;
+ uint64_t ds_session;
+};
+
+static void
+des3_init(struct krb5_key_state *ks)
+{
+ struct des3_state *ds;
+
+ ds = malloc(sizeof(struct des3_state), M_GSSAPI, M_WAITOK|M_ZERO);
+ mtx_init(&ds->ds_lock, "gss des3 lock", NULL, MTX_DEF);
+ ks->ks_priv = ds;
+}
+
+static void
+des3_destroy(struct krb5_key_state *ks)
+{
+ struct des3_state *ds = ks->ks_priv;
+
+ if (ds->ds_session)
+ crypto_freesession(ds->ds_session);
+ mtx_destroy(&ds->ds_lock);
+ free(ks->ks_priv, M_GSSAPI);
+}
+
+static void
+des3_set_key(struct krb5_key_state *ks, const void *in)
+{
+ void *kp = ks->ks_key;
+ struct des3_state *ds = ks->ks_priv;
+ struct cryptoini cri[2];
+
+ if (kp != in)
+ bcopy(in, kp, ks->ks_class->ec_keylen);
+
+ if (ds->ds_session)
+ crypto_freesession(ds->ds_session);
+
+ bzero(cri, sizeof(cri));
+
+ cri[0].cri_alg = CRYPTO_SHA1_HMAC;
+ cri[0].cri_klen = 192;
+ cri[0].cri_mlen = 0;
+ cri[0].cri_key = ks->ks_key;
+ cri[0].cri_next = &cri[1];
+
+ cri[1].cri_alg = CRYPTO_3DES_CBC;
+ cri[1].cri_klen = 192;
+ cri[1].cri_mlen = 0;
+ cri[1].cri_key = ks->ks_key;
+ cri[1].cri_next = NULL;
+
+ crypto_newsession(&ds->ds_session, cri,
+ CRYPTOCAP_F_HARDWARE | CRYPTOCAP_F_SOFTWARE);
+}
+
+static void
+des3_random_to_key(struct krb5_key_state *ks, const void *in)
+{
+ uint8_t *outkey;
+ const uint8_t *inkey;
+ int subkey;
+
+ for (subkey = 0, outkey = ks->ks_key, inkey = in; subkey < 3;
+ subkey++, outkey += 8, inkey += 7) {
+ /*
+ * Expand 56 bits of random data to 64 bits as follows
+ * (in the example, bit number 1 is the MSB of the 56
+ * bits of random data):
+ *
+ * expanded =
+ * 1 2 3 4 5 6 7 p
+ * 9 10 11 12 13 14 15 p
+ * 17 18 19 20 21 22 23 p
+ * 25 26 27 28 29 30 31 p
+ * 33 34 35 36 37 38 39 p
+ * 41 42 43 44 45 46 47 p
+ * 49 50 51 52 53 54 55 p
+ * 56 48 40 32 24 16 8 p
+ */
+ outkey[0] = inkey[0];
+ outkey[1] = inkey[1];
+ outkey[2] = inkey[2];
+ outkey[3] = inkey[3];
+ outkey[4] = inkey[4];
+ outkey[5] = inkey[5];
+ outkey[6] = inkey[6];
+ outkey[7] = (((inkey[0] & 1) << 1)
+ | ((inkey[1] & 1) << 2)
+ | ((inkey[2] & 1) << 3)
+ | ((inkey[3] & 1) << 4)
+ | ((inkey[4] & 1) << 5)
+ | ((inkey[5] & 1) << 6)
+ | ((inkey[6] & 1) << 7));
+ des_set_odd_parity((des_cblock *) outkey);
+ if (des_is_weak_key((des_cblock *) outkey))
+ outkey[7] ^= 0xf0;
+ }
+
+ des3_set_key(ks, ks->ks_key);
+}
+
+static int
+des3_crypto_cb(struct cryptop *crp)
+{
+ int error;
+ struct des3_state *ds = (struct des3_state *) crp->crp_opaque;
+
+ if (CRYPTO_SESID2CAPS(ds->ds_session) & CRYPTOCAP_F_SYNC)
+ return (0);
+
+ error = crp->crp_etype;
+ if (error == EAGAIN)
+ error = crypto_dispatch(crp);
+ mtx_lock(&ds->ds_lock);
+ if (error || (crp->crp_flags & CRYPTO_F_DONE))
+ wakeup(crp);
+ mtx_unlock(&ds->ds_lock);
+
+ return (0);
+}
+
+static void
+des3_encrypt_1(const struct krb5_key_state *ks, struct mbuf *inout,
+ size_t skip, size_t len, void *ivec, int encdec)
+{
+ struct des3_state *ds = ks->ks_priv;
+ struct cryptop *crp;
+ struct cryptodesc *crd;
+ int error;
+
+ crp = crypto_getreq(1);
+ crd = crp->crp_desc;
+
+ crd->crd_skip = skip;
+ crd->crd_len = len;
+ crd->crd_flags = CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT | encdec;
+ if (ivec) {
+ bcopy(ivec, crd->crd_iv, 8);
+ } else {
+ bzero(crd->crd_iv, 8);
+ }
+ crd->crd_next = NULL;
+ crd->crd_alg = CRYPTO_3DES_CBC;
+
+ crp->crp_sid = ds->ds_session;
+ crp->crp_flags = CRYPTO_F_IMBUF | CRYPTO_F_CBIFSYNC;
+ crp->crp_buf = (void *) inout;
+ crp->crp_opaque = (void *) ds;
+ crp->crp_callback = des3_crypto_cb;
+
+ error = crypto_dispatch(crp);
+
+ if ((CRYPTO_SESID2CAPS(ds->ds_session) & CRYPTOCAP_F_SYNC) == 0) {
+ mtx_lock(&ds->ds_lock);
+ if (!error && !(crp->crp_flags & CRYPTO_F_DONE))
+ error = msleep(crp, &ds->ds_lock, 0, "gssdes3", 0);
+ mtx_unlock(&ds->ds_lock);
+ }
+
+ crypto_freereq(crp);
+}
+
+static void
+des3_encrypt(const struct krb5_key_state *ks, struct mbuf *inout,
+ size_t skip, size_t len, void *ivec, size_t ivlen)
+{
+
+ des3_encrypt_1(ks, inout, skip, len, ivec, CRD_F_ENCRYPT);
+}
+
+static void
+des3_decrypt(const struct krb5_key_state *ks, struct mbuf *inout,
+ size_t skip, size_t len, void *ivec, size_t ivlen)
+{
+
+ des3_encrypt_1(ks, inout, skip, len, ivec, 0);
+}
+
+static void
+des3_checksum(const struct krb5_key_state *ks, int usage,
+ struct mbuf *inout, size_t skip, size_t inlen, size_t outlen)
+{
+ struct des3_state *ds = ks->ks_priv;
+ struct cryptop *crp;
+ struct cryptodesc *crd;
+ int error;
+
+ crp = crypto_getreq(1);
+ crd = crp->crp_desc;
+
+ crd->crd_skip = skip;
+ crd->crd_len = inlen;
+ crd->crd_inject = skip + inlen;
+ crd->crd_flags = 0;
+ crd->crd_next = NULL;
+ crd->crd_alg = CRYPTO_SHA1_HMAC;
+
+ crp->crp_sid = ds->ds_session;
+ crp->crp_ilen = inlen;
+ crp->crp_olen = 20;
+ crp->crp_etype = 0;
+ crp->crp_flags = CRYPTO_F_IMBUF | CRYPTO_F_CBIFSYNC;
+ crp->crp_buf = (void *) inout;
+ crp->crp_opaque = (void *) ds;
+ crp->crp_callback = des3_crypto_cb;
+
+ error = crypto_dispatch(crp);
+
+ if ((CRYPTO_SESID2CAPS(ds->ds_session) & CRYPTOCAP_F_SYNC) == 0) {
+ mtx_lock(&ds->ds_lock);
+ if (!error && !(crp->crp_flags & CRYPTO_F_DONE))
+ error = msleep(crp, &ds->ds_lock, 0, "gssdes3", 0);
+ mtx_unlock(&ds->ds_lock);
+ }
+
+ crypto_freereq(crp);
+}
+
+struct krb5_encryption_class krb5_des3_encryption_class = {
+ "des3-cbc-sha1", /* name */
+ ETYPE_DES3_CBC_SHA1, /* etype */
+ EC_DERIVED_KEYS, /* flags */
+ 8, /* blocklen */
+ 8, /* msgblocklen */
+ 20, /* checksumlen */
+ 168, /* keybits */
+ 24, /* keylen */
+ des3_init,
+ des3_destroy,
+ des3_set_key,
+ des3_random_to_key,
+ des3_encrypt,
+ des3_decrypt,
+ des3_checksum
+};
+
+#if 0
+struct des3_dk_test {
+ uint8_t key[24];
+ uint8_t usage[8];
+ size_t usagelen;
+ uint8_t dk[24];
+};
+struct des3_dk_test tests[] = {
+ {{0xdc, 0xe0, 0x6b, 0x1f, 0x64, 0xc8, 0x57, 0xa1, 0x1c, 0x3d, 0xb5,
+ 0x7c, 0x51, 0x89, 0x9b, 0x2c, 0xc1, 0x79, 0x10, 0x08, 0xce, 0x97,
+ 0x3b, 0x92},
+ {0x00, 0x00, 0x00, 0x01, 0x55}, 5,
+ {0x92, 0x51, 0x79, 0xd0, 0x45, 0x91, 0xa7, 0x9b, 0x5d, 0x31, 0x92,
+ 0xc4, 0xa7, 0xe9, 0xc2, 0x89, 0xb0, 0x49, 0xc7, 0x1f, 0x6e, 0xe6,
+ 0x04, 0xcd}},
+
+ {{0x5e, 0x13, 0xd3, 0x1c, 0x70, 0xef, 0x76, 0x57, 0x46, 0x57, 0x85,
+ 0x31, 0xcb, 0x51, 0xc1, 0x5b, 0xf1, 0x1c, 0xa8, 0x2c, 0x97, 0xce,
+ 0xe9, 0xf2},
+ {0x00, 0x00, 0x00, 0x01, 0xaa}, 5,
+ {0x9e, 0x58, 0xe5, 0xa1, 0x46, 0xd9, 0x94, 0x2a, 0x10, 0x1c, 0x46,
+ 0x98, 0x45, 0xd6, 0x7a, 0x20, 0xe3, 0xc4, 0x25, 0x9e, 0xd9, 0x13,
+ 0xf2, 0x07}},
+
+ {{0x98, 0xe6, 0xfd, 0x8a, 0x04, 0xa4, 0xb6, 0x85, 0x9b, 0x75, 0xa1,
+ 0x76, 0x54, 0x0b, 0x97, 0x52, 0xba, 0xd3, 0xec, 0xd6, 0x10, 0xa2,
+ 0x52, 0xbc},
+ {0x00, 0x00, 0x00, 0x01, 0x55}, 5,
+ {0x13, 0xfe, 0xf8, 0x0d, 0x76, 0x3e, 0x94, 0xec, 0x6d, 0x13, 0xfd,
+ 0x2c, 0xa1, 0xd0, 0x85, 0x07, 0x02, 0x49, 0xda, 0xd3, 0x98, 0x08,
+ 0xea, 0xbf}},
+
+ {{0x62, 0x2a, 0xec, 0x25, 0xa2, 0xfe, 0x2c, 0xad, 0x70, 0x94, 0x68,
+ 0x0b, 0x7c, 0x64, 0x94, 0x02, 0x80, 0x08, 0x4c, 0x1a, 0x7c, 0xec,
+ 0x92, 0xb5},
+ {0x00, 0x00, 0x00, 0x01, 0xaa}, 5,
+ {0xf8, 0xdf, 0xbf, 0x04, 0xb0, 0x97, 0xe6, 0xd9, 0xdc, 0x07, 0x02,
+ 0x68, 0x6b, 0xcb, 0x34, 0x89, 0xd9, 0x1f, 0xd9, 0xa4, 0x51, 0x6b,
+ 0x70, 0x3e}},
+
+ {{0xd3, 0xf8, 0x29, 0x8c, 0xcb, 0x16, 0x64, 0x38, 0xdc, 0xb9, 0xb9,
+ 0x3e, 0xe5, 0xa7, 0x62, 0x92, 0x86, 0xa4, 0x91, 0xf8, 0x38, 0xf8,
+ 0x02, 0xfb},
+ {0x6b, 0x65, 0x72, 0x62, 0x65, 0x72, 0x6f, 0x73}, 8,
+ {0x23, 0x70, 0xda, 0x57, 0x5d, 0x2a, 0x3d, 0xa8, 0x64, 0xce, 0xbf,
+ 0xdc, 0x52, 0x04, 0xd5, 0x6d, 0xf7, 0x79, 0xa7, 0xdf, 0x43, 0xd9,
+ 0xda, 0x43}},
+
+ {{0xc1, 0x08, 0x16, 0x49, 0xad, 0xa7, 0x43, 0x62, 0xe6, 0xa1, 0x45,
+ 0x9d, 0x01, 0xdf, 0xd3, 0x0d, 0x67, 0xc2, 0x23, 0x4c, 0x94, 0x07,
+ 0x04, 0xda},
+ {0x00, 0x00, 0x00, 0x01, 0x55}, 5,
+ {0x34, 0x80, 0x57, 0xec, 0x98, 0xfd, 0xc4, 0x80, 0x16, 0x16, 0x1c,
+ 0x2a, 0x4c, 0x7a, 0x94, 0x3e, 0x92, 0xae, 0x49, 0x2c, 0x98, 0x91,
+ 0x75, 0xf7}},
+
+ {{0x5d, 0x15, 0x4a, 0xf2, 0x38, 0xf4, 0x67, 0x13, 0x15, 0x57, 0x19,
+ 0xd5, 0x5e, 0x2f, 0x1f, 0x79, 0x0d, 0xd6, 0x61, 0xf2, 0x79, 0xa7,
+ 0x91, 0x7c},
+ {0x00, 0x00, 0x00, 0x01, 0xaa}, 5,
+ {0xa8, 0x80, 0x8a, 0xc2, 0x67, 0xda, 0xda, 0x3d, 0xcb, 0xe9, 0xa7,
+ 0xc8, 0x46, 0x26, 0xfb, 0xc7, 0x61, 0xc2, 0x94, 0xb0, 0x13, 0x15,
+ 0xe5, 0xc1}},
+
+ {{0x79, 0x85, 0x62, 0xe0, 0x49, 0x85, 0x2f, 0x57, 0xdc, 0x8c, 0x34,
+ 0x3b, 0xa1, 0x7f, 0x2c, 0xa1, 0xd9, 0x73, 0x94, 0xef, 0xc8, 0xad,
+ 0xc4, 0x43},
+ {0x00, 0x00, 0x00, 0x01, 0x55}, 5,
+ {0xc8, 0x13, 0xf8, 0x8a, 0x3b, 0xe3, 0xb3, 0x34, 0xf7, 0x54, 0x25,
+ 0xce, 0x91, 0x75, 0xfb, 0xe3, 0xc8, 0x49, 0x3b, 0x89, 0xc8, 0x70,
+ 0x3b, 0x49}},
+
+ {{0x26, 0xdc, 0xe3, 0x34, 0xb5, 0x45, 0x29, 0x2f, 0x2f, 0xea, 0xb9,
+ 0xa8, 0x70, 0x1a, 0x89, 0xa4, 0xb9, 0x9e, 0xb9, 0x94, 0x2c, 0xec,
+ 0xd0, 0x16},
+ {0x00, 0x00, 0x00, 0x01, 0xaa}, 5,
+ {0xf4, 0x8f, 0xfd, 0x6e, 0x83, 0xf8, 0x3e, 0x73, 0x54, 0xe6, 0x94,
+ 0xfd, 0x25, 0x2c, 0xf8, 0x3b, 0xfe, 0x58, 0xf7, 0xd5, 0xba, 0x37,
+ 0xec, 0x5d}},
+};
+#define N_TESTS (sizeof(tests) / sizeof(tests[0]))
+
+int
+main(int argc, char **argv)
+{
+ struct krb5_key_state *key, *dk;
+ uint8_t *dkp;
+ int j, i;
+
+ for (j = 0; j < N_TESTS; j++) {
+ struct des3_dk_test *t = &tests[j];
+ key = krb5_create_key(&des3_encryption_class);
+ krb5_set_key(key, t->key);
+ dk = krb5_derive_key(key, t->usage, t->usagelen);
+ krb5_free_key(key);
+ 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
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