2019-10-25 00:26:17 +02:00
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/* pic32mz-crypt.h
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*
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2020-05-06 01:15:21 +02:00
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* Copyright (C) 2006-2020 wolfSSL Inc.
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2019-10-25 00:26:17 +02:00
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*
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* This file is part of wolfSSL.
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*
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* wolfSSL is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* wolfSSL is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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*/
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#ifndef PIC32MZ_CRYPT_H
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#define PIC32MZ_CRYPT_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <libwolfssl/wolfcrypt/settings.h>
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#ifdef WOLFSSL_MICROCHIP_PIC32MZ
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#ifndef MICROCHIP_PIC32
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#define MICROCHIP_PIC32
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#endif
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/* If algos aren't enabled then turn off */
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#ifdef WOLFSSL_PIC32MZ_HASH
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#if defined(NO_MD5) && defined(NO_SHA) && defined(NO_SHA256)
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#undef WOLFSSL_PIC32MZ_HASH
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#endif
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#endif
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#ifdef WOLFSSL_PIC32MZ_CRYPT
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#if defined(NO_AES) && defined(NO_DES3)
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#undef WOLFSSL_PIC32MZ_CRYPT
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#endif
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#endif
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/* Enables support for large hashing */
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/* requires exclusive access to crypto hardware done at application layer */
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#define WOLFSSL_PIC32MZ_LARGE_HASH
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#include <xc.h>
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#include <sys/endian.h>
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#include <sys/kmem.h>
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/* PIC32 Crypto Structures */
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typedef struct saCtrl {
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unsigned int CRYPTOALGO : 4;
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unsigned int MULTITASK : 3;
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unsigned int KEYSIZE : 2;
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unsigned int ENCTYPE : 1;
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unsigned int ALGO : 7;
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unsigned int : 3;
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unsigned int FLAGS : 1;
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unsigned int FB : 1;
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unsigned int LOADIV : 1;
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unsigned int LNC : 1;
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unsigned int IRFLAG : 1;
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unsigned int ICVONLY : 1;
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unsigned int OR_EN : 1;
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unsigned int NO_RX : 1;
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unsigned int : 1;
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unsigned int VERIFY : 1;
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unsigned int : 2;
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} saCtrl;
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typedef struct securityAssociation {
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saCtrl SA_CTRL;
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unsigned int SA_AUTHKEY[8];
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unsigned int SA_ENCKEY[8];
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unsigned int SA_AUTHIV[8];
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unsigned int SA_ENCIV[4];
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} securityAssociation;
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typedef struct bdCtrl {
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unsigned int BUFLEN : 16;
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unsigned int CBD_INT_EN : 1;
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unsigned int PKT_INT_EN : 1;
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unsigned int LIFM : 1;
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unsigned int LAST_BD : 1;
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unsigned int CRDMA_EN : 1;
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unsigned int UPD_RES : 1;
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unsigned int SA_FETCH_EN : 1;
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unsigned int SEC_CODE : 8;
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volatile unsigned int DESC_EN : 1;
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} bdCtrl;
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typedef struct bufferDescriptor {
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bdCtrl BD_CTRL;
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unsigned int SA_ADDR;
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unsigned int SRCADDR;
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unsigned int DSTADDR;
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unsigned int NXTPTR;
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unsigned int UPDPTR;
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unsigned int MSGLEN;
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unsigned int ENCOFF;
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} bufferDescriptor;
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/* Cache Updates Struct */
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typedef struct hashUpdCache {
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unsigned char* buf;
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unsigned int bufLen;
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unsigned int updLen;
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int isCopy;
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#ifdef WOLFSSL_PIC32MZ_LARGE_HASH
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unsigned int finalLen;
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#endif
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} hashUpdCache;
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/* Direction */
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#define PIC32_ENCRYPTION 0b1
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#define PIC32_DECRYPTION 0b0
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/* Algorithm */
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#define PIC32_ALGO_HMAC1 0b01000000
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#define PIC32_ALGO_SHA256 0b00100000
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#define PIC32_ALGO_SHA1 0b00010000
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#define PIC32_ALGO_MD5 0b00001000
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#define PIC32_ALGO_AES 0b00000100
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#define PIC32_ALGO_TDES 0b00000010
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#define PIC32_ALGO_DES 0b00000001
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/* Crypto Algo */
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/* AES */
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#define PIC32_CRYPTOALGO_AES_GCM 0b1110
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#define PIC32_CRYPTOALGO_RCTR 0b1101
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#define PIC32_CRYPTOALGO_RCBC_MAC 0b1100
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#define PIC32_CRYPTOALGO_ROFB 0b1011
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#define PIC32_CRYPTOALGO_RCFB 0b1010
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#define PIC32_CRYPTOALGO_RCBC 0b1001
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#define PIC32_CRYPTOALGO_RECB 0b1000
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/* Triple-DES */
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#define PIC32_CRYPTOALGO_TOFB 0b0111
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#define PIC32_CRYPTOALGO_TCFB 0b0110
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#define PIC32_CRYPTOALGO_TCBC 0b0101
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#define PIC32_CRYPTOALGO_TECB 0b0100
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/* DES */
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#define PIC32_CRYPTOALGO_OFB 0b0011
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#define PIC32_CRYPTOALGO_CFB 0b0010
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#define PIC32_CRYPTOALGO_CBC 0b0001
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#define PIC32_CRYPTOALGO_ECB 0b0000
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/* Key Size */
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#define PIC32_KEYSIZE_256 0b10
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#define PIC32_KEYSIZE_192 0b01
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#define PIC32_KEYSIZE_128 0b00
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/* PIC32 Minimum Buffer/Block Sizes */
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#define PIC32_BLOCKSIZE_HASH 64
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#define PIC32_BLOCKSIZE_HMAC PIC32_BLOCKSIZE_HASH
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#define PIC32_BLOCKSIZE_MD5 PIC32_BLOCKSIZE_HASH
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#define PIC32_BLOCKSIZE_SHA1 PIC32_BLOCKSIZE_HASH
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#define PIC32_BLOCKSIZE_SHA256 PIC32_BLOCKSIZE_HASH
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#define PIC32_BLOCKSIZE_AES 16
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#define PIC32_BLOCKSIZE_TDES 24
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#define PIC32_BLOCKSIZE_DES 8
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#define PIC32_DIGEST_SIZE 32
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/* Helper Macros */
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#define PIC32MZ_IF_RAM(addr) (KVA_TO_PA(addr) < 0x1D000000)
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/* If EF part then Crypto engine supports swapping output bytes */
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#define PIC32_NO_OUT_SWAP ((__PIC32_FEATURE_SET0 == 'E') && \
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(__PIC32_FEATURE_SET1 == 'C'))
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#ifndef NO_AES
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int wc_Pic32AesCrypt(word32 *key, int keyLen, word32 *iv, int ivLen,
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byte* out, const byte* in, word32 sz,
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int dir, int algo, int cryptoalgo);
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#endif
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#ifndef NO_DES3
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int wc_Pic32DesCrypt(word32 *key, int keyLen, word32 *iv, int ivLen,
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byte* out, const byte* in, word32 sz,
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int dir, int algo, int cryptoalgo);
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#endif
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#ifdef WOLFSSL_PIC32MZ_HASH
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#define WOLFSSL_NO_HASH_RAW
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int wc_Pic32Hash(const byte* in, int inLen, word32* out, int outLen, int algo);
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int wc_Pic32HashCopy(hashUpdCache* src, hashUpdCache* dst);
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#ifndef NO_MD5
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struct wc_Md5;
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void wc_Md5Pic32Free(struct wc_Md5* md5);
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#endif
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#ifndef NO_SHA
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struct wc_Sha;
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void wc_ShaPic32Free(struct wc_Sha* sha);
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#endif
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#ifndef NO_SHA256
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struct wc_Sha256;
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void wc_Sha256Pic32Free(struct wc_Sha256* sha256);
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#endif
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#endif /* WOLFSSL_PIC32MZ_HASH */
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#endif /* WOLFSSL_MICROCHIP_PIC32MZ */
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* PIC32MZ_CRYPT_H */
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