des.h   [plain text]

/*
 * Copyright (c) 2012 Apple Computer, Inc. All rights reserved.
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 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
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 *
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 *
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#ifndef _CRYPTO_DES_H
#define _CRYPTO_DES_H

#ifdef  __cplusplus
extern "C" {
#endif

#include <corecrypto/ccmode.h>
#include <corecrypto/ccdes.h>
#include <corecrypto/ccn.h>

/* must be 32bit quantity */
#define DES_LONG u_int32_t

typedef unsigned char des_cblock[8];

/* Unholy hack: this is currently the size for the only implementation of DES in corecrypto */
#define DES_ECB_CTX_MAX_SIZE (64*4)
#define DES_CBC_CTX_MAX_SIZE (ccn_sizeof_size(sizeof(struct ccmode_ecb)) + ccn_sizeof_size(CCDES_BLOCK_SIZE) + ccn_sizeof_size(DES_ECB_CTX_MAX_SIZE))
#define DES3_ECB_CTX_MAX_SIZE (64*4*3)
#define DES3_CBC_CTX_MAX_SIZE (ccn_sizeof_size(sizeof(struct ccmode_ecb)) + ccn_sizeof_size(CCDES_BLOCK_SIZE) + ccn_sizeof_size(DES3_ECB_CTX_MAX_SIZE))


typedef struct{
	ccecb_ctx_decl(DES_ECB_CTX_MAX_SIZE, enc);
	ccecb_ctx_decl(DES_ECB_CTX_MAX_SIZE, dec);
} des_ecb_key_schedule;

typedef struct{
	cccbc_ctx_decl(DES_CBC_CTX_MAX_SIZE, enc);
	cccbc_ctx_decl(DES_CBC_CTX_MAX_SIZE, dec);
} des_cbc_key_schedule;

typedef struct{
	ccecb_ctx_decl(DES3_ECB_CTX_MAX_SIZE, enc);
	ccecb_ctx_decl(DES3_ECB_CTX_MAX_SIZE, dec);
} des3_ecb_key_schedule;

typedef struct{
	cccbc_ctx_decl(DES3_CBC_CTX_MAX_SIZE, enc);
	cccbc_ctx_decl(DES3_CBC_CTX_MAX_SIZE, dec);
} des3_cbc_key_schedule;

/* Only here for backward compatibility with smb kext */
typedef des_ecb_key_schedule des_key_schedule[1];
#define des_set_key des_ecb_key_sched

#define DES_ENCRYPT	1
#define DES_DECRYPT	0


/* Single DES ECB - 1 block */
int des_ecb_key_sched(des_cblock *key, des_ecb_key_schedule *ks);
void des_ecb_encrypt(des_cblock *in, des_cblock *out, des_ecb_key_schedule *ks, int encrypt);

/* Triple DES ECB - 1 block */
int des3_ecb_key_sched(des_cblock *key, des3_ecb_key_schedule *ks);
void des3_ecb_encrypt(des_cblock *block, des_cblock *, des3_ecb_key_schedule *ks, int encrypt);

/* Single DES CBC */
int des_cbc_key_sched(des_cblock *key, des_cbc_key_schedule *ks);
void des_cbc_encrypt(des_cblock *in, des_cblock *out, int32_t len,
					 des_cbc_key_schedule *ks, des_cblock *iv, des_cblock *retiv, int encrypt);

/* Triple DES CBC */
int des3_cbc_key_sched(des_cblock *key, des3_cbc_key_schedule *ks);
void des3_cbc_encrypt(des_cblock *in, des_cblock *out, int32_t len,
					  des3_cbc_key_schedule *ks, des_cblock *iv, des_cblock *retiv, int encrypt);

/* Single DES CBC-MAC */
void des_cbc_cksum(des_cblock *in, des_cblock *out, int len, des_cbc_key_schedule *ks);

void des_fixup_key_parity(des_cblock *key);
int des_is_weak_key(des_cblock *key);
// int des_set_key(des_cblock *, des_key_schedule); // Unsupported KPI.

#ifdef  __cplusplus
}
#endif

#endif