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- /* $FreeBSD$ */
- /* $OpenBSD: xform.h,v 1.8 2001/08/28 12:20:43 ben Exp $ */
- /*-
- * The author of this code is Angelos D. Keromytis (angelos@cis.upenn.edu)
- *
- * This code was written by Angelos D. Keromytis in Athens, Greece, in
- * February 2000. Network Security Technologies Inc. (NSTI) kindly
- * supported the development of this code.
- *
- * Copyright (c) 2000 Angelos D. Keromytis
- * Copyright (c) 2014 The FreeBSD Foundation
- * All rights reserved.
- *
- * Portions of this software were developed by John-Mark Gurney
- * under sponsorship of the FreeBSD Foundation and
- * Rubicon Communications, LLC (Netgate).
- *
- * Permission to use, copy, and modify this software without fee
- * is hereby granted, provided that this entire notice is included in
- * all source code copies of any software which is or includes a copy or
- * modification of this software.
- *
- * 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.
- */
- #ifndef _CRYPTO_XFORM_ENC_H_
- #define _CRYPTO_XFORM_ENC_H_
- #include <sys/malloc.h>
- #include <sys/errno.h>
- #include <crypto/rijndael/rijndael.h>
- #include <crypto/camellia/camellia.h>
- #include <opencrypto/cryptodev.h>
- #ifdef _STANDALONE
- #include <stand.h>
- #endif
- #define AESICM_BLOCKSIZE AES_BLOCK_LEN
- #define AES_XTS_BLOCKSIZE 16
- #define AES_XTS_IVSIZE 8
- #define AES_XTS_ALPHA 0x87 /* GF(2^128) generator polynomial */
- /* Declarations */
- struct enc_xform {
- int type;
- char *name;
- size_t ctxsize;
- uint16_t blocksize; /* Required input block size -- 1 for stream ciphers. */
- uint16_t native_blocksize; /* Used for stream ciphers. */
- uint16_t ivsize;
- uint16_t minkey, maxkey;
- /*
- * Encrypt/decrypt a single block. For stream ciphers this
- * encrypts/decrypts a single "native" block.
- */
- void (*encrypt) (void *, const uint8_t *, uint8_t *);
- void (*decrypt) (void *, const uint8_t *, uint8_t *);
- int (*setkey) (void *, const uint8_t *, int len);
- void (*reinit) (void *, const uint8_t *);
- /*
- * For stream ciphers, encrypt/decrypt the final partial block
- * of 'len' bytes.
- */
- void (*encrypt_last) (void *, const uint8_t *, uint8_t *, size_t len);
- void (*decrypt_last) (void *, const uint8_t *, uint8_t *, size_t len);
- };
- extern struct enc_xform enc_xform_null;
- extern struct enc_xform enc_xform_rijndael128;
- extern struct enc_xform enc_xform_aes_icm;
- extern struct enc_xform enc_xform_aes_nist_gcm;
- extern struct enc_xform enc_xform_aes_nist_gmac;
- extern struct enc_xform enc_xform_aes_xts;
- extern struct enc_xform enc_xform_camellia;
- extern struct enc_xform enc_xform_chacha20;
- extern struct enc_xform enc_xform_ccm;
- struct aes_icm_ctx {
- uint32_t ac_ek[4*(RIJNDAEL_MAXNR + 1)];
- /* ac_block is initialized to IV */
- uint8_t ac_block[AESICM_BLOCKSIZE];
- int ac_nr;
- };
- struct aes_xts_ctx {
- rijndael_ctx key1;
- rijndael_ctx key2;
- uint8_t tweak[AES_XTS_BLOCKSIZE];
- };
- #endif /* _CRYPTO_XFORM_ENC_H_ */
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