diff options
Diffstat (limited to 'sys/crypto/xform.c')
| -rw-r--r-- | sys/crypto/xform.c | 354 |
1 files changed, 354 insertions, 0 deletions
diff --git a/sys/crypto/xform.c b/sys/crypto/xform.c new file mode 100644 index 00000000000..98bb2017494 --- /dev/null +++ b/sys/crypto/xform.c @@ -0,0 +1,354 @@ +/* $OpenBSD: xform.c,v 1.1 2000/03/17 10:25:21 angelos Exp $ */ + +/* + * The authors of this code are John Ioannidis (ji@tla.org), + * Angelos D. Keromytis (kermit@csd.uch.gr) and + * Niels Provos (provos@physnet.uni-hamburg.de). + * + * This code was written by John Ioannidis for BSD/OS in Athens, Greece, + * in November 1995. + * + * Ported to OpenBSD and NetBSD, with additional transforms, in December 1996, + * by Angelos D. Keromytis. + * + * Additional transforms and features in 1997 and 1998 by Angelos D. Keromytis + * and Niels Provos. + * + * Additional features in 1999 by Angelos D. Keromytis. + * + * Copyright (C) 1995, 1996, 1997, 1998, 1999 by John Ioannidis, + * Angelos D. Keromytis and Niels Provos. + * + * Permission to use, copy, and modify this software without fee + * is hereby granted, provided that this entire notice is included in + * all copies of any software which is or includes a copy or + * modification of this software. + * You may use this code under the GNU public license if you so wish. Please + * contribute changes back to the authors under this freer than GPL license + * so that we may further the use of strong encryption without limitations to + * all. + * + * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY + * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE + * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR + * PURPOSE. + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/malloc.h> +#include <sys/sysctl.h> +#include <sys/errno.h> +#include <sys/time.h> +#include <sys/kernel.h> +#include <machine/cpu.h> + +#include <sys/md5k.h> +#include <crypto/sha1.h> +#include <crypto/rmd160.h> +#include <crypto/blf.h> +#include <crypto/cast.h> +#include <crypto/skipjack.h> +#include <crypto/crypto.h> +#include <crypto/xform.h> + +extern void des_ecb3_encrypt(caddr_t, caddr_t, caddr_t, caddr_t, caddr_t, int); +extern void des_ecb_encrypt(caddr_t, caddr_t, caddr_t, int); + +void des_set_key(caddr_t, caddr_t); +void des1_setkey(u_int8_t **, u_int8_t *, int); +void des3_setkey(u_int8_t **, u_int8_t *, int); +void blf_setkey(u_int8_t **, u_int8_t *, int); +void cast5_setkey(u_int8_t **, u_int8_t *, int); +void skipjack_setkey(u_int8_t **, u_int8_t *, int); +void des1_encrypt(caddr_t, u_int8_t *); +void des3_encrypt(caddr_t, u_int8_t *); +void blf_encrypt(caddr_t, u_int8_t *); +void cast5_encrypt(caddr_t, u_int8_t *); +void skipjack_encrypt(caddr_t, u_int8_t *); +void des1_decrypt(caddr_t, u_int8_t *); +void des3_decrypt(caddr_t, u_int8_t *); +void blf_decrypt(caddr_t, u_int8_t *); +void cast5_decrypt(caddr_t, u_int8_t *); +void skipjack_decrypt(caddr_t, u_int8_t *); +void des1_zerokey(u_int8_t **); +void des3_zerokey(u_int8_t **); +void blf_zerokey(u_int8_t **); +void cast5_zerokey(u_int8_t **); +void skipjack_zerokey(u_int8_t **); + +int MD5Update_int(void *, u_int8_t *, u_int16_t); +int SHA1Update_int(void *, u_int8_t *, u_int16_t); +int RMD160Update_int(void *, u_int8_t *, u_int16_t); + +/* Encryption instances */ +struct enc_xform enc_xform_des = +{ + CRYPTO_DES_CBC, "DES", + 8, 8, 8, 8, + des1_encrypt, + des1_decrypt, + des1_setkey, + des1_zerokey, +}; + +struct enc_xform enc_xform_3des = +{ + CRYPTO_3DES_CBC, "3DES", + 8, 24, 24, 8, + des3_encrypt, + des3_decrypt, + des3_setkey, + des3_zerokey +}; + +struct enc_xform enc_xform_blf = +{ + CRYPTO_BLF_CBC, "Blowfish", + 8, 5, 56 /* 448 bits, max key */, 8, + blf_encrypt, + blf_decrypt, + blf_setkey, + blf_zerokey +}; + +struct enc_xform enc_xform_cast5 = +{ + CRYPTO_CAST_CBC, "CAST-128", + 8, 5, 16, 8, + cast5_encrypt, + cast5_decrypt, + cast5_setkey, + cast5_zerokey +}; + +struct enc_xform enc_xform_skipjack = +{ + CRYPTO_SKIPJACK_CBC, "Skipjack", + 8, 10, 10, 8, + skipjack_encrypt, + skipjack_decrypt, + skipjack_setkey, + skipjack_zerokey +}; + +/* Authentication instances */ +struct auth_hash auth_hash_hmac_md5_96 = +{ + CRYPTO_MD5_HMAC96, "HMAC-MD5-96", + 16, 16, 12, sizeof(MD5_CTX), + (void (*) (void *)) MD5Init, MD5Update_int, + (void (*) (u_int8_t *, void *)) MD5Final +}; + +struct auth_hash auth_hash_hmac_sha1_96 = +{ + CRYPTO_SHA1_HMAC96, "HMAC-SHA1-96", + 20, 20, 12, sizeof(SHA1_CTX), + (void (*) (void *)) SHA1Init, SHA1Update_int, + (void (*) (u_int8_t *, void *)) SHA1Final +}; + +struct auth_hash auth_hash_hmac_ripemd_160_96 = +{ + CRYPTO_RIPEMD160_HMAC96, "HMAC-RIPEMD-160-96", + 20, 20, 12, sizeof(RMD160_CTX), + (void (*)(void *)) RMD160Init, RMD160Update_int, + (void (*)(u_int8_t *, void *)) RMD160Final +}; + +struct auth_hash auth_hash_key_md5 = +{ + CRYPTO_MD5_KPDK, "Keyed MD5", + 0, 16, 16, sizeof(MD5_CTX), + (void (*)(void *)) MD5Init, MD5Update_int, + (void (*)(u_int8_t *, void *)) MD5Final +}; + +struct auth_hash auth_hash_key_sha1 = +{ + CRYPTO_SHA1_KPDK, "Keyed SHA1", + 0, 20, 20, sizeof(SHA1_CTX), + (void (*)(void *)) SHA1Init, SHA1Update_int, + (void (*)(u_int8_t *, void *)) SHA1Final +}; + +/* + * Encryption wrapper routines. + */ +void +des1_encrypt(caddr_t key, u_int8_t *blk) +{ + des_ecb_encrypt(blk, blk, key, 1); +} + +void +des1_decrypt(caddr_t key, u_int8_t *blk) +{ + des_ecb_encrypt(blk, blk, key, 0); +} + +void +des1_setkey(u_int8_t **sched, u_int8_t *key, int len) +{ + MALLOC(*sched, u_int8_t *, 128, M_XDATA, M_WAITOK); + bzero(*sched, 128); + des_set_key(key, *sched); +} + +void +des1_zerokey(u_int8_t **sched) +{ + bzero(*sched, 128); + FREE(*sched, M_XDATA); + *sched = NULL; +} + +void +des3_encrypt(caddr_t key, u_int8_t *blk) +{ + des_ecb3_encrypt(blk, blk, key, key + 128, key + 256, 1); +} + +void +des3_decrypt(caddr_t key, u_int8_t *blk) +{ + des_ecb3_encrypt(blk, blk, key + 256, key + 128, key, 0); +} + +void +des3_setkey(u_int8_t **sched, u_int8_t *key, int len) +{ + MALLOC(*sched, u_int8_t *, 384, M_XDATA, M_WAITOK); + bzero(*sched, 384); + des_set_key(key, *sched); + des_set_key(key + 8, *sched + 128); + des_set_key(key + 16, *sched + 256); +} + +void +des3_zerokey(u_int8_t **sched) +{ + bzero(*sched, 384); + FREE(*sched, M_XDATA); + *sched = NULL; +} + +void +blf_encrypt(caddr_t key, u_int8_t *blk) +{ + blf_ecb_encrypt((blf_ctx *) key, blk, 8); +} + +void +blf_decrypt(caddr_t key, u_int8_t *blk) +{ + blf_ecb_decrypt((blf_ctx *) key, blk, 8); +} + +void +blf_setkey(u_int8_t **sched, u_int8_t *key, int len) +{ + MALLOC(*sched, u_int8_t *, sizeof(blf_ctx), M_XDATA, M_WAITOK); + bzero(*sched, sizeof(blf_ctx)); + blf_key((blf_ctx *)*sched, key, len); +} + +void +blf_zerokey(u_int8_t **sched) +{ + bzero(*sched, sizeof(blf_ctx)); + FREE(*sched, M_XDATA); + *sched = NULL; +} + +void +cast5_encrypt(caddr_t key, u_int8_t *blk) +{ + cast_encrypt((cast_key *) key, blk, blk); +} + +void +cast5_decrypt(caddr_t key, u_int8_t *blk) +{ + cast_decrypt((cast_key *) key, blk, blk); +} + +void +cast5_setkey(u_int8_t **sched, u_int8_t *key, int len) +{ + MALLOC(*sched, u_int8_t *, sizeof(blf_ctx), M_XDATA, M_WAITOK); + bzero(*sched, sizeof(blf_ctx)); + cast_setkey((cast_key *)*sched, key, len); +} + +void +cast5_zerokey(u_int8_t **sched) +{ + bzero(*sched, sizeof(cast_key)); + FREE(*sched, M_XDATA); + *sched = NULL; +} + +void +skipjack_encrypt(caddr_t key, u_int8_t *blk) +{ + skipjack_forwards(blk, blk, (u_int8_t **) key); +} + +void +skipjack_decrypt(caddr_t key, u_int8_t *blk) +{ + skipjack_backwards(blk, blk, (u_int8_t **) key); +} + +void +skipjack_setkey(u_int8_t **sched, u_int8_t *key, int len) +{ + MALLOC(*sched, u_int8_t *, 10 * sizeof(u_int8_t *), M_XDATA, M_WAITOK); + bzero(*sched, 10 * sizeof(u_int8_t *)); + subkey_table_gen(key, (u_int8_t **) *sched); +} + +void +skipjack_zerokey(u_int8_t **sched) +{ + int k; + + for (k = 0; k < 10; k++) + if (((u_int8_t **)(*sched))[k]) + { + bzero(((u_int8_t **)(*sched))[k], 0x100); + FREE(((u_int8_t **)(*sched))[k], M_XDATA); + } + bzero(*sched, 10 * sizeof(u_int8_t *)); + FREE(*sched, M_XDATA); + *sched = NULL; +} + +/* + * And now for auth. + */ + +int +RMD160Update_int(void *ctx, u_int8_t *buf, u_int16_t len) +{ + RMD160Update(ctx, buf, len); + return 0; +} + +int +MD5Update_int(void *ctx, u_int8_t *buf, u_int16_t len) +{ + MD5Update(ctx, buf, len); + return 0; +} + +int +SHA1Update_int(void *ctx, u_int8_t *buf, u_int16_t len) +{ + SHA1Update(ctx, buf, len); + return 0; +} + |