The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/opencrypto/xform_cml.c

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    1 /*      $OpenBSD: xform.c,v 1.16 2001/08/28 12:20:43 ben Exp $  */
    2 /*-
    3  * The authors of this code are John Ioannidis (ji@tla.org),
    4  * Angelos D. Keromytis (kermit@csd.uch.gr),
    5  * Niels Provos (provos@physnet.uni-hamburg.de) and
    6  * Damien Miller (djm@mindrot.org).
    7  *
    8  * This code was written by John Ioannidis for BSD/OS in Athens, Greece,
    9  * in November 1995.
   10  *
   11  * Ported to OpenBSD and NetBSD, with additional transforms, in December 1996,
   12  * by Angelos D. Keromytis.
   13  *
   14  * Additional transforms and features in 1997 and 1998 by Angelos D. Keromytis
   15  * and Niels Provos.
   16  *
   17  * Additional features in 1999 by Angelos D. Keromytis.
   18  *
   19  * AES XTS implementation in 2008 by Damien Miller
   20  *
   21  * Copyright (C) 1995, 1996, 1997, 1998, 1999 by John Ioannidis,
   22  * Angelos D. Keromytis and Niels Provos.
   23  *
   24  * Copyright (C) 2001, Angelos D. Keromytis.
   25  *
   26  * Copyright (C) 2008, Damien Miller
   27  * Copyright (c) 2014 The FreeBSD Foundation
   28  * All rights reserved.
   29  *
   30  * Portions of this software were developed by John-Mark Gurney
   31  * under sponsorship of the FreeBSD Foundation and
   32  * Rubicon Communications, LLC (Netgate).
   33  *
   34  * Permission to use, copy, and modify this software with or without fee
   35  * is hereby granted, provided that this entire notice is included in
   36  * all copies of any software which is or includes a copy or
   37  * modification of this software.
   38  * You may use this code under the GNU public license if you so wish. Please
   39  * contribute changes back to the authors under this freer than GPL license
   40  * so that we may further the use of strong encryption without limitations to
   41  * all.
   42  *
   43  * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
   44  * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY
   45  * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
   46  * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
   47  * PURPOSE.
   48  */
   49 
   50 #include <sys/cdefs.h>
   51 __FBSDID("$FreeBSD: releng/11.0/sys/opencrypto/xform_cml.c 292963 2015-12-30 22:43:07Z allanjude $");
   52 
   53 #include <crypto/camellia/camellia.h>
   54 #include <opencrypto/xform_enc.h>
   55 
   56 static  int cml_setkey(u_int8_t **, u_int8_t *, int);
   57 static  void cml_encrypt(caddr_t, u_int8_t *);
   58 static  void cml_decrypt(caddr_t, u_int8_t *);
   59 static  void cml_zerokey(u_int8_t **);
   60 
   61 /* Encryption instances */
   62 struct enc_xform enc_xform_camellia = {
   63         CRYPTO_CAMELLIA_CBC, "Camellia",
   64         CAMELLIA_BLOCK_LEN, CAMELLIA_BLOCK_LEN, CAMELLIA_MIN_KEY,
   65         CAMELLIA_MAX_KEY,
   66         cml_encrypt,
   67         cml_decrypt,
   68         cml_setkey,
   69         cml_zerokey,
   70         NULL,
   71 };
   72 
   73 /*
   74  * Encryption wrapper routines.
   75  */
   76 static void
   77 cml_encrypt(caddr_t key, u_int8_t *blk)
   78 {
   79         camellia_encrypt((camellia_ctx *) key, (u_char *) blk, (u_char *) blk);
   80 }
   81 
   82 static void
   83 cml_decrypt(caddr_t key, u_int8_t *blk)
   84 {
   85         camellia_decrypt(((camellia_ctx *) key), (u_char *) blk,
   86             (u_char *) blk);
   87 }
   88 
   89 static int
   90 cml_setkey(u_int8_t **sched, u_int8_t *key, int len)
   91 {
   92         int err;
   93 
   94         if (len != 16 && len != 24 && len != 32)
   95                 return (EINVAL);
   96         *sched = KMALLOC(sizeof(camellia_ctx), M_CRYPTO_DATA,
   97             M_NOWAIT|M_ZERO);
   98         if (*sched != NULL) {
   99                 camellia_set_key((camellia_ctx *) *sched, (u_char *) key,
  100                     len * 8);
  101                 err = 0;
  102         } else
  103                 err = ENOMEM;
  104         return err;
  105 }
  106 
  107 static void
  108 cml_zerokey(u_int8_t **sched)
  109 {
  110         bzero(*sched, sizeof(camellia_ctx));
  111         KFREE(*sched, M_CRYPTO_DATA);
  112         *sched = NULL;
  113 }

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