1/*-
2 * Copyright (c) 2005-2006 Pawel Jakub Dawidek <pjd@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright

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20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: head/sys/geom/eli/g_eli.c 161220 2006-08-11 19:09:12Z pjd $");
29
30#include <sys/param.h>
31#include <sys/systm.h>
32#include <sys/kernel.h>
33#include <sys/linker.h>
34#include <sys/module.h>
35#include <sys/lock.h>
36#include <sys/mutex.h>

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360
361/*
362 * Here we generate IV. It is unique for every sector.
363 */
364void
365g_eli_crypto_ivgen(struct g_eli_softc *sc, off_t offset, u_char *iv,
366 size_t size)
367{
368 u_char off[8], hash[SHA256_DIGEST_LENGTH];
369 SHA256_CTX ctx;
370
371 if (!(sc->sc_flags & G_ELI_FLAG_NATIVE_BYTE_ORDER))
372 le64enc(off, (uint64_t)offset);
373 /* Copy precalculated SHA256 context for IV-Key. */
374 bcopy(&sc->sc_ivctx, &ctx, sizeof(ctx));
375 SHA256_Update(&ctx, (uint8_t *)&offset, sizeof(offset));
376 SHA256_Final(hash, &ctx);
377 bcopy(hash, iv, size);
378}
379
380int

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512 */
513 if (md->md_flags & (G_ELI_FLAG_WO_DETACH | G_ELI_FLAG_RO))
514 gp->access = g_eli_access;
515 else
516 gp->access = g_std_access;
517
518 sc->sc_crypto = G_ELI_CRYPTO_SW;
519 sc->sc_flags = md->md_flags;
520 /* Backward compatibility. */
521 if (md->md_version < 2)
522 sc->sc_flags |= G_ELI_FLAG_NATIVE_BYTE_ORDER;
523 sc->sc_ealgo = md->md_ealgo;
524 sc->sc_nkey = nkey;
525 /*
526 * Remember the keys in our softc structure.
527 */
528 g_eli_mkey_propagate(sc, mkey);
529 sc->sc_ekeylen = md->md_keylen;
530

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999 if (sc->sc_flags & (flag)) { \
1000 if (!first) \
1001 sbuf_printf(sb, ", "); \
1002 else \
1003 first = 0; \
1004 sbuf_printf(sb, name); \
1005 } \
1006} while (0)
1007 ADD_FLAG(G_ELI_FLAG_NATIVE_BYTE_ORDER, "NATIVE-BYTE-ORDER");
1008 ADD_FLAG(G_ELI_FLAG_ONETIME, "ONETIME");
1009 ADD_FLAG(G_ELI_FLAG_BOOT, "BOOT");
1010 ADD_FLAG(G_ELI_FLAG_WO_DETACH, "W-DETACH");
1011 ADD_FLAG(G_ELI_FLAG_RW_DETACH, "RW-DETACH");
1012 ADD_FLAG(G_ELI_FLAG_AUTH, "AUTH");
1013 ADD_FLAG(G_ELI_FLAG_WOPEN, "W-OPEN");
1014 ADD_FLAG(G_ELI_FLAG_DESTROY, "DESTROY");
1015 ADD_FLAG(G_ELI_FLAG_RO, "READ-ONLY");

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