23c57df72989c916b3e98084eb88d48777999691mcpowers/*
23c57df72989c916b3e98084eb88d48777999691mcpowers * CDDL HEADER START
23c57df72989c916b3e98084eb88d48777999691mcpowers *
23c57df72989c916b3e98084eb88d48777999691mcpowers * The contents of this file are subject to the terms of the
23c57df72989c916b3e98084eb88d48777999691mcpowers * Common Development and Distribution License (the "License").
23c57df72989c916b3e98084eb88d48777999691mcpowers * You may not use this file except in compliance with the License.
23c57df72989c916b3e98084eb88d48777999691mcpowers *
23c57df72989c916b3e98084eb88d48777999691mcpowers * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
23c57df72989c916b3e98084eb88d48777999691mcpowers * or http://www.opensolaris.org/os/licensing.
23c57df72989c916b3e98084eb88d48777999691mcpowers * See the License for the specific language governing permissions
23c57df72989c916b3e98084eb88d48777999691mcpowers * and limitations under the License.
23c57df72989c916b3e98084eb88d48777999691mcpowers *
23c57df72989c916b3e98084eb88d48777999691mcpowers * When distributing Covered Code, include this CDDL HEADER in each
23c57df72989c916b3e98084eb88d48777999691mcpowers * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
23c57df72989c916b3e98084eb88d48777999691mcpowers * If applicable, add the following below this CDDL HEADER, with the
23c57df72989c916b3e98084eb88d48777999691mcpowers * fields enclosed by brackets "[]" replaced with your own identifying
23c57df72989c916b3e98084eb88d48777999691mcpowers * information: Portions Copyright [yyyy] [name of copyright owner]
23c57df72989c916b3e98084eb88d48777999691mcpowers *
23c57df72989c916b3e98084eb88d48777999691mcpowers * CDDL HEADER END
23c57df72989c916b3e98084eb88d48777999691mcpowers */
23c57df72989c916b3e98084eb88d48777999691mcpowers/*
983a10335731bc55a0b7a37f195575fa109e30d4Mark Powers * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23c57df72989c916b3e98084eb88d48777999691mcpowers * Use is subject to license terms.
23c57df72989c916b3e98084eb88d48777999691mcpowers */
23c57df72989c916b3e98084eb88d48777999691mcpowers
23c57df72989c916b3e98084eb88d48777999691mcpowers#ifndef _KERNEL
23c57df72989c916b3e98084eb88d48777999691mcpowers#include <stdlib.h>
23c57df72989c916b3e98084eb88d48777999691mcpowers#endif
23c57df72989c916b3e98084eb88d48777999691mcpowers
23c57df72989c916b3e98084eb88d48777999691mcpowers#include <sys/strsun.h>
23c57df72989c916b3e98084eb88d48777999691mcpowers#include <sys/types.h>
23c57df72989c916b3e98084eb88d48777999691mcpowers#include <modes/modes.h>
23c57df72989c916b3e98084eb88d48777999691mcpowers#include <sys/crypto/common.h>
23c57df72989c916b3e98084eb88d48777999691mcpowers#include <sys/crypto/impl.h>
23c57df72989c916b3e98084eb88d48777999691mcpowers
23c57df72989c916b3e98084eb88d48777999691mcpowers/*
23c57df72989c916b3e98084eb88d48777999691mcpowers * Initialize by setting iov_or_mp to point to the current iovec or mp,
23c57df72989c916b3e98084eb88d48777999691mcpowers * and by setting current_offset to an offset within the current iovec or mp.
23c57df72989c916b3e98084eb88d48777999691mcpowers */
23c57df72989c916b3e98084eb88d48777999691mcpowersvoid
23c57df72989c916b3e98084eb88d48777999691mcpowerscrypto_init_ptrs(crypto_data_t *out, void **iov_or_mp, offset_t *current_offset)
23c57df72989c916b3e98084eb88d48777999691mcpowers{
23c57df72989c916b3e98084eb88d48777999691mcpowers offset_t offset;
23c57df72989c916b3e98084eb88d48777999691mcpowers
23c57df72989c916b3e98084eb88d48777999691mcpowers switch (out->cd_format) {
23c57df72989c916b3e98084eb88d48777999691mcpowers case CRYPTO_DATA_RAW:
23c57df72989c916b3e98084eb88d48777999691mcpowers *current_offset = out->cd_offset;
23c57df72989c916b3e98084eb88d48777999691mcpowers break;
23c57df72989c916b3e98084eb88d48777999691mcpowers
23c57df72989c916b3e98084eb88d48777999691mcpowers case CRYPTO_DATA_UIO: {
23c57df72989c916b3e98084eb88d48777999691mcpowers uio_t *uiop = out->cd_uio;
23c57df72989c916b3e98084eb88d48777999691mcpowers uintptr_t vec_idx;
23c57df72989c916b3e98084eb88d48777999691mcpowers
23c57df72989c916b3e98084eb88d48777999691mcpowers offset = out->cd_offset;
23c57df72989c916b3e98084eb88d48777999691mcpowers for (vec_idx = 0; vec_idx < uiop->uio_iovcnt &&
23c57df72989c916b3e98084eb88d48777999691mcpowers offset >= uiop->uio_iov[vec_idx].iov_len;
23c57df72989c916b3e98084eb88d48777999691mcpowers offset -= uiop->uio_iov[vec_idx++].iov_len)
23c57df72989c916b3e98084eb88d48777999691mcpowers ;
23c57df72989c916b3e98084eb88d48777999691mcpowers
23c57df72989c916b3e98084eb88d48777999691mcpowers *current_offset = offset;
23c57df72989c916b3e98084eb88d48777999691mcpowers *iov_or_mp = (void *)vec_idx;
23c57df72989c916b3e98084eb88d48777999691mcpowers break;
23c57df72989c916b3e98084eb88d48777999691mcpowers }
23c57df72989c916b3e98084eb88d48777999691mcpowers
23c57df72989c916b3e98084eb88d48777999691mcpowers case CRYPTO_DATA_MBLK: {
23c57df72989c916b3e98084eb88d48777999691mcpowers mblk_t *mp;
23c57df72989c916b3e98084eb88d48777999691mcpowers
23c57df72989c916b3e98084eb88d48777999691mcpowers offset = out->cd_offset;
23c57df72989c916b3e98084eb88d48777999691mcpowers for (mp = out->cd_mp; mp != NULL && offset >= MBLKL(mp);
23c57df72989c916b3e98084eb88d48777999691mcpowers offset -= MBLKL(mp), mp = mp->b_cont)
23c57df72989c916b3e98084eb88d48777999691mcpowers ;
23c57df72989c916b3e98084eb88d48777999691mcpowers
23c57df72989c916b3e98084eb88d48777999691mcpowers *current_offset = offset;
23c57df72989c916b3e98084eb88d48777999691mcpowers *iov_or_mp = mp;
23c57df72989c916b3e98084eb88d48777999691mcpowers break;
23c57df72989c916b3e98084eb88d48777999691mcpowers
23c57df72989c916b3e98084eb88d48777999691mcpowers }
23c57df72989c916b3e98084eb88d48777999691mcpowers } /* end switch */
23c57df72989c916b3e98084eb88d48777999691mcpowers}
23c57df72989c916b3e98084eb88d48777999691mcpowers
23c57df72989c916b3e98084eb88d48777999691mcpowers/*
23c57df72989c916b3e98084eb88d48777999691mcpowers * Get pointers for where in the output to copy a block of encrypted or
23c57df72989c916b3e98084eb88d48777999691mcpowers * decrypted data. The iov_or_mp argument stores a pointer to the current
23c57df72989c916b3e98084eb88d48777999691mcpowers * iovec or mp, and offset stores an offset into the current iovec or mp.
23c57df72989c916b3e98084eb88d48777999691mcpowers */
23c57df72989c916b3e98084eb88d48777999691mcpowersvoid
23c57df72989c916b3e98084eb88d48777999691mcpowerscrypto_get_ptrs(crypto_data_t *out, void **iov_or_mp, offset_t *current_offset,
23c57df72989c916b3e98084eb88d48777999691mcpowers uint8_t **out_data_1, size_t *out_data_1_len, uint8_t **out_data_2,
23c57df72989c916b3e98084eb88d48777999691mcpowers size_t amt)
23c57df72989c916b3e98084eb88d48777999691mcpowers{
23c57df72989c916b3e98084eb88d48777999691mcpowers offset_t offset;
23c57df72989c916b3e98084eb88d48777999691mcpowers
23c57df72989c916b3e98084eb88d48777999691mcpowers switch (out->cd_format) {
23c57df72989c916b3e98084eb88d48777999691mcpowers case CRYPTO_DATA_RAW: {
23c57df72989c916b3e98084eb88d48777999691mcpowers iovec_t *iov;
23c57df72989c916b3e98084eb88d48777999691mcpowers
23c57df72989c916b3e98084eb88d48777999691mcpowers offset = *current_offset;
23c57df72989c916b3e98084eb88d48777999691mcpowers iov = &out->cd_raw;
23c57df72989c916b3e98084eb88d48777999691mcpowers if ((offset + amt) <= iov->iov_len) {
23c57df72989c916b3e98084eb88d48777999691mcpowers /* one block fits */
23c57df72989c916b3e98084eb88d48777999691mcpowers *out_data_1 = (uint8_t *)iov->iov_base + offset;
23c57df72989c916b3e98084eb88d48777999691mcpowers *out_data_1_len = amt;
23c57df72989c916b3e98084eb88d48777999691mcpowers *out_data_2 = NULL;
23c57df72989c916b3e98084eb88d48777999691mcpowers *current_offset = offset + amt;
23c57df72989c916b3e98084eb88d48777999691mcpowers }
23c57df72989c916b3e98084eb88d48777999691mcpowers break;
23c57df72989c916b3e98084eb88d48777999691mcpowers }
23c57df72989c916b3e98084eb88d48777999691mcpowers
23c57df72989c916b3e98084eb88d48777999691mcpowers case CRYPTO_DATA_UIO: {
23c57df72989c916b3e98084eb88d48777999691mcpowers uio_t *uio = out->cd_uio;
23c57df72989c916b3e98084eb88d48777999691mcpowers iovec_t *iov;
23c57df72989c916b3e98084eb88d48777999691mcpowers offset_t offset;
23c57df72989c916b3e98084eb88d48777999691mcpowers uintptr_t vec_idx;
23c57df72989c916b3e98084eb88d48777999691mcpowers uint8_t *p;
23c57df72989c916b3e98084eb88d48777999691mcpowers
23c57df72989c916b3e98084eb88d48777999691mcpowers offset = *current_offset;
23c57df72989c916b3e98084eb88d48777999691mcpowers vec_idx = (uintptr_t)(*iov_or_mp);
23c57df72989c916b3e98084eb88d48777999691mcpowers iov = &uio->uio_iov[vec_idx];
23c57df72989c916b3e98084eb88d48777999691mcpowers p = (uint8_t *)iov->iov_base + offset;
23c57df72989c916b3e98084eb88d48777999691mcpowers *out_data_1 = p;
23c57df72989c916b3e98084eb88d48777999691mcpowers
23c57df72989c916b3e98084eb88d48777999691mcpowers if (offset + amt <= iov->iov_len) {
23c57df72989c916b3e98084eb88d48777999691mcpowers /* can fit one block into this iov */
23c57df72989c916b3e98084eb88d48777999691mcpowers *out_data_1_len = amt;
23c57df72989c916b3e98084eb88d48777999691mcpowers *out_data_2 = NULL;
23c57df72989c916b3e98084eb88d48777999691mcpowers *current_offset = offset + amt;
23c57df72989c916b3e98084eb88d48777999691mcpowers } else {
23c57df72989c916b3e98084eb88d48777999691mcpowers /* one block spans two iovecs */
23c57df72989c916b3e98084eb88d48777999691mcpowers *out_data_1_len = iov->iov_len - offset;
23c57df72989c916b3e98084eb88d48777999691mcpowers if (vec_idx == uio->uio_iovcnt)
23c57df72989c916b3e98084eb88d48777999691mcpowers return;
23c57df72989c916b3e98084eb88d48777999691mcpowers vec_idx++;
23c57df72989c916b3e98084eb88d48777999691mcpowers iov = &uio->uio_iov[vec_idx];
23c57df72989c916b3e98084eb88d48777999691mcpowers *out_data_2 = (uint8_t *)iov->iov_base;
23c57df72989c916b3e98084eb88d48777999691mcpowers *current_offset = amt - *out_data_1_len;
23c57df72989c916b3e98084eb88d48777999691mcpowers }
23c57df72989c916b3e98084eb88d48777999691mcpowers *iov_or_mp = (void *)vec_idx;
23c57df72989c916b3e98084eb88d48777999691mcpowers break;
23c57df72989c916b3e98084eb88d48777999691mcpowers }
23c57df72989c916b3e98084eb88d48777999691mcpowers
23c57df72989c916b3e98084eb88d48777999691mcpowers case CRYPTO_DATA_MBLK: {
23c57df72989c916b3e98084eb88d48777999691mcpowers mblk_t *mp;
23c57df72989c916b3e98084eb88d48777999691mcpowers uint8_t *p;
23c57df72989c916b3e98084eb88d48777999691mcpowers
23c57df72989c916b3e98084eb88d48777999691mcpowers offset = *current_offset;
23c57df72989c916b3e98084eb88d48777999691mcpowers mp = (mblk_t *)*iov_or_mp;
23c57df72989c916b3e98084eb88d48777999691mcpowers p = mp->b_rptr + offset;
23c57df72989c916b3e98084eb88d48777999691mcpowers *out_data_1 = p;
23c57df72989c916b3e98084eb88d48777999691mcpowers if ((p + amt) <= mp->b_wptr) {
23c57df72989c916b3e98084eb88d48777999691mcpowers /* can fit one block into this mblk */
23c57df72989c916b3e98084eb88d48777999691mcpowers *out_data_1_len = amt;
23c57df72989c916b3e98084eb88d48777999691mcpowers *out_data_2 = NULL;
23c57df72989c916b3e98084eb88d48777999691mcpowers *current_offset = offset + amt;
23c57df72989c916b3e98084eb88d48777999691mcpowers } else {
23c57df72989c916b3e98084eb88d48777999691mcpowers /* one block spans two mblks */
104d3bde5b4ac46904f144d3676110fc57a69603Dan OpenSolaris Anderson *out_data_1_len = _PTRDIFF(mp->b_wptr, p);
23c57df72989c916b3e98084eb88d48777999691mcpowers if ((mp = mp->b_cont) == NULL)
23c57df72989c916b3e98084eb88d48777999691mcpowers return;
23c57df72989c916b3e98084eb88d48777999691mcpowers *out_data_2 = mp->b_rptr;
23c57df72989c916b3e98084eb88d48777999691mcpowers *current_offset = (amt - *out_data_1_len);
23c57df72989c916b3e98084eb88d48777999691mcpowers }
23c57df72989c916b3e98084eb88d48777999691mcpowers *iov_or_mp = mp;
23c57df72989c916b3e98084eb88d48777999691mcpowers break;
23c57df72989c916b3e98084eb88d48777999691mcpowers }
23c57df72989c916b3e98084eb88d48777999691mcpowers } /* end switch */
23c57df72989c916b3e98084eb88d48777999691mcpowers}
23c57df72989c916b3e98084eb88d48777999691mcpowers
23c57df72989c916b3e98084eb88d48777999691mcpowersvoid
23c57df72989c916b3e98084eb88d48777999691mcpowerscrypto_free_mode_ctx(void *ctx)
23c57df72989c916b3e98084eb88d48777999691mcpowers{
23c57df72989c916b3e98084eb88d48777999691mcpowers common_ctx_t *common_ctx = (common_ctx_t *)ctx;
23c57df72989c916b3e98084eb88d48777999691mcpowers
4d703b5c9cb1bc29ace6c53cb50b2fe766e6370fMark Powers switch (common_ctx->cc_flags &
983a10335731bc55a0b7a37f195575fa109e30d4Mark Powers (ECB_MODE|CBC_MODE|CTR_MODE|CCM_MODE|GCM_MODE|GMAC_MODE)) {
4d703b5c9cb1bc29ace6c53cb50b2fe766e6370fMark Powers case ECB_MODE:
23c57df72989c916b3e98084eb88d48777999691mcpowers#ifdef _KERNEL
23c57df72989c916b3e98084eb88d48777999691mcpowers kmem_free(common_ctx, sizeof (ecb_ctx_t));
23c57df72989c916b3e98084eb88d48777999691mcpowers#else
23c57df72989c916b3e98084eb88d48777999691mcpowers free(common_ctx);
23c57df72989c916b3e98084eb88d48777999691mcpowers#endif
4d703b5c9cb1bc29ace6c53cb50b2fe766e6370fMark Powers break;
4d703b5c9cb1bc29ace6c53cb50b2fe766e6370fMark Powers
4d703b5c9cb1bc29ace6c53cb50b2fe766e6370fMark Powers case CBC_MODE:
23c57df72989c916b3e98084eb88d48777999691mcpowers#ifdef _KERNEL
23c57df72989c916b3e98084eb88d48777999691mcpowers kmem_free(common_ctx, sizeof (cbc_ctx_t));
23c57df72989c916b3e98084eb88d48777999691mcpowers#else
23c57df72989c916b3e98084eb88d48777999691mcpowers free(common_ctx);
23c57df72989c916b3e98084eb88d48777999691mcpowers#endif
4d703b5c9cb1bc29ace6c53cb50b2fe766e6370fMark Powers break;
4d703b5c9cb1bc29ace6c53cb50b2fe766e6370fMark Powers
4d703b5c9cb1bc29ace6c53cb50b2fe766e6370fMark Powers case CTR_MODE:
23c57df72989c916b3e98084eb88d48777999691mcpowers#ifdef _KERNEL
23c57df72989c916b3e98084eb88d48777999691mcpowers kmem_free(common_ctx, sizeof (ctr_ctx_t));
23c57df72989c916b3e98084eb88d48777999691mcpowers#else
23c57df72989c916b3e98084eb88d48777999691mcpowers free(common_ctx);
23c57df72989c916b3e98084eb88d48777999691mcpowers#endif
4d703b5c9cb1bc29ace6c53cb50b2fe766e6370fMark Powers break;
4d703b5c9cb1bc29ace6c53cb50b2fe766e6370fMark Powers
4d703b5c9cb1bc29ace6c53cb50b2fe766e6370fMark Powers case CCM_MODE:
23c57df72989c916b3e98084eb88d48777999691mcpowers#ifdef _KERNEL
23c57df72989c916b3e98084eb88d48777999691mcpowers if (((ccm_ctx_t *)ctx)->ccm_pt_buf != NULL)
23c57df72989c916b3e98084eb88d48777999691mcpowers kmem_free(((ccm_ctx_t *)ctx)->ccm_pt_buf,
23c57df72989c916b3e98084eb88d48777999691mcpowers ((ccm_ctx_t *)ctx)->ccm_data_len);
23c57df72989c916b3e98084eb88d48777999691mcpowers
23c57df72989c916b3e98084eb88d48777999691mcpowers kmem_free(ctx, sizeof (ccm_ctx_t));
23c57df72989c916b3e98084eb88d48777999691mcpowers#else
23c57df72989c916b3e98084eb88d48777999691mcpowers if (((ccm_ctx_t *)ctx)->ccm_pt_buf != NULL)
23c57df72989c916b3e98084eb88d48777999691mcpowers free(((ccm_ctx_t *)ctx)->ccm_pt_buf);
23c57df72989c916b3e98084eb88d48777999691mcpowers free(ctx);
4d703b5c9cb1bc29ace6c53cb50b2fe766e6370fMark Powers#endif
4d703b5c9cb1bc29ace6c53cb50b2fe766e6370fMark Powers break;
4d703b5c9cb1bc29ace6c53cb50b2fe766e6370fMark Powers
4d703b5c9cb1bc29ace6c53cb50b2fe766e6370fMark Powers case GCM_MODE:
983a10335731bc55a0b7a37f195575fa109e30d4Mark Powers case GMAC_MODE:
4d703b5c9cb1bc29ace6c53cb50b2fe766e6370fMark Powers#ifdef _KERNEL
4d703b5c9cb1bc29ace6c53cb50b2fe766e6370fMark Powers if (((gcm_ctx_t *)ctx)->gcm_pt_buf != NULL)
4d703b5c9cb1bc29ace6c53cb50b2fe766e6370fMark Powers kmem_free(((gcm_ctx_t *)ctx)->gcm_pt_buf,
4d703b5c9cb1bc29ace6c53cb50b2fe766e6370fMark Powers ((gcm_ctx_t *)ctx)->gcm_pt_buf_len);
4d703b5c9cb1bc29ace6c53cb50b2fe766e6370fMark Powers
4d703b5c9cb1bc29ace6c53cb50b2fe766e6370fMark Powers kmem_free(ctx, sizeof (gcm_ctx_t));
4d703b5c9cb1bc29ace6c53cb50b2fe766e6370fMark Powers#else
4d703b5c9cb1bc29ace6c53cb50b2fe766e6370fMark Powers if (((gcm_ctx_t *)ctx)->gcm_pt_buf != NULL)
4d703b5c9cb1bc29ace6c53cb50b2fe766e6370fMark Powers free(((gcm_ctx_t *)ctx)->gcm_pt_buf);
4d703b5c9cb1bc29ace6c53cb50b2fe766e6370fMark Powers free(ctx);
23c57df72989c916b3e98084eb88d48777999691mcpowers#endif
23c57df72989c916b3e98084eb88d48777999691mcpowers }
23c57df72989c916b3e98084eb88d48777999691mcpowers}