mirror of
https://github.com/darlinghq/darling-xnu.git
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104 lines
3.4 KiB
C
104 lines
3.4 KiB
C
/*
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* Copyright (c) 2012 Apple Computer, Inc. All rights reserved.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. The rights granted to you under the License
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* may not be used to create, or enable the creation or redistribution of,
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* unlawful or unlicensed copies of an Apple operating system, or to
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* circumvent, violate, or enable the circumvention or violation of, any
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* terms of an Apple operating system software license agreement.
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*
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* Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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*/
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#include <libkern/crypto/crypto_internal.h>
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#include <libkern/libkern.h>
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#include <kern/debug.h>
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#include <libkern/crypto/des.h>
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#include <corecrypto/ccmode.h>
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/* Single DES ECB - used by ipv6 (esp_core.c) */
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int
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des_ecb_key_sched(des_cblock *key, des_ecb_key_schedule *ks)
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{
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const struct ccmode_ecb *enc = g_crypto_funcs->ccdes_ecb_encrypt;
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const struct ccmode_ecb *dec = g_crypto_funcs->ccdes_ecb_decrypt;
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/* Make sure the context size for the mode fits in the one we have */
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if ((enc->size > sizeof(ks->enc)) || (dec->size > sizeof(ks->dec))) {
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panic("%s: inconsistent size for DES-ECB context", __FUNCTION__);
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}
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int rc = enc->init(enc, ks->enc, CCDES_KEY_SIZE, key);
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if (rc) {
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return rc;
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}
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return dec->init(dec, ks->dec, CCDES_KEY_SIZE, key);
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}
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/* Simple des - 1 block */
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int
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des_ecb_encrypt(des_cblock *in, des_cblock *out, des_ecb_key_schedule *ks, int enc)
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{
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const struct ccmode_ecb *ecb = enc ? g_crypto_funcs->ccdes_ecb_encrypt : g_crypto_funcs->ccdes_ecb_decrypt;
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ccecb_ctx *ctx = enc ? ks->enc : ks->dec;
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return ecb->ecb(ctx, 1, in, out);
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}
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/* Triple DES ECB - used by ipv6 (esp_core.c) */
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int
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des3_ecb_key_sched(des_cblock *key, des3_ecb_key_schedule *ks)
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{
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const struct ccmode_ecb *enc = g_crypto_funcs->cctdes_ecb_encrypt;
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const struct ccmode_ecb *dec = g_crypto_funcs->cctdes_ecb_decrypt;
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/* Make sure the context size for the mode fits in the one we have */
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if ((enc->size > sizeof(ks->enc)) || (dec->size > sizeof(ks->dec))) {
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panic("%s: inconsistent size for 3DES-ECB context", __FUNCTION__);
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}
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int rc = enc->init(enc, ks->enc, CCDES_KEY_SIZE * 3, key);
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if (rc) {
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return rc;
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}
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return dec->init(dec, ks->dec, CCDES_KEY_SIZE * 3, key);
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}
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/* Simple des - 1 block */
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int
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des3_ecb_encrypt(des_cblock *in, des_cblock *out, des3_ecb_key_schedule *ks, int enc)
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{
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const struct ccmode_ecb *ecb = enc ? g_crypto_funcs->cctdes_ecb_encrypt : g_crypto_funcs->cctdes_ecb_decrypt;
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ccecb_ctx *ctx = enc ? ks->enc : ks->dec;
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return ecb->ecb(ctx, 1, in, out);
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}
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/* Raw key helper functions */
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int
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des_is_weak_key(des_cblock *key)
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{
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return g_crypto_funcs->ccdes_key_is_weak_fn(key, CCDES_KEY_SIZE);
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}
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