162 lines
6.5 KiB
C
162 lines
6.5 KiB
C
/*
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Copyright (c) 2013 Anton Titov.
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Copyright (c) 2013 pCloud Ltd. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met: Redistributions of source code must retain the above
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copyright notice, this list of conditions and the following
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disclaimer. Redistributions in binary form must reproduce the
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above copyright notice, this list of conditions and the following
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disclaimer in the documentation and/or other materials provided
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with the distribution. Neither the name of pCloud Ltd nor the
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names of its contributors may be used to endorse or promote
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products derived from this software without specific prior written
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permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL pCloud
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Ltd BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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DAMAGE.
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*/
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#ifndef _PSYNC_OPENSSL_H
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#define _PSYNC_OPENSSL_H
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#include "pcompiler.h"
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#include <openssl/sha.h>
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#include <openssl/rsa.h>
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#include <openssl/evp.h>
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#include <openssl/aes.h>
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typedef RSA *psync_rsa_t;
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typedef RSA *psync_rsa_publickey_t;
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typedef RSA *psync_rsa_privatekey_t;
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typedef struct {
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size_t keylen;
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unsigned char key[];
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} psync_symmetric_key_struct_t, *psync_symmetric_key_t;
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typedef AES_KEY *psync_aes256_encoder;
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typedef AES_KEY *psync_aes256_decoder;
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#define PSYNC_INVALID_RSA NULL
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#define PSYNC_INVALID_SYM_KEY NULL
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#define PSYNC_SHA1_BLOCK_LEN 64
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#define PSYNC_SHA1_DIGEST_LEN 20
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#define PSYNC_SHA1_DIGEST_HEXLEN 40
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#define psync_sha1_ctx SHA_CTX
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#define psync_sha1(data, datalen, checksum) SHA1(data, datalen, checksum)
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#define psync_sha1_init(pctx) SHA1_Init(pctx)
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#define psync_sha1_update(pctx, data, datalen) SHA1_Update(pctx, data, datalen)
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#define psync_sha1_final(checksum, pctx) SHA1_Final(checksum, pctx)
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#define PSYNC_SHA512_BLOCK_LEN 128
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#define PSYNC_SHA512_DIGEST_LEN 64
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#define PSYNC_SHA512_DIGEST_HEXLEN 128
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#define psync_sha512_ctx SHA512_CTX
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#define psync_sha512(data, datalen, checksum) SHA512(data, datalen, checksum)
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#define psync_sha512_init(pctx) SHA512_Init(pctx)
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#define psync_sha512_update(pctx, data, datalen) SHA512_Update(pctx, data, datalen)
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#define psync_sha512_final(checksum, pctx) SHA512_Final(checksum, pctx)
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/* AES_encrypt/AES_decrypt do not use hardware acceleration, do it ourselves */
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#if defined(__GNUC__) && (defined(__amd64__) || defined(__x86_64__) || defined(__i386__))
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#define PSYNC_AES_HW
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#define PSYNC_AES_HW_GCC
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#elif defined(_MSC_VER)
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#define PSYNC_AES_HW
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#define PSYNC_AES_HW_MSC
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#endif
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#if defined(PSYNC_AES_HW)
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extern int psync_ssl_hw_aes;
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void psync_aes256_encode_block_hw(psync_aes256_encoder enc, const unsigned char *src, unsigned char *dst);
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void psync_aes256_decode_block_hw(psync_aes256_decoder enc, const unsigned char *src, unsigned char *dst);
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void psync_aes256_encode_2blocks_consec_hw(psync_aes256_encoder enc, const unsigned char *src, unsigned char *dst);
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void psync_aes256_decode_2blocks_consec_hw(psync_aes256_decoder enc, const unsigned char *src, unsigned char *dst);
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void psync_aes256_decode_4blocks_consec_xor_hw(psync_aes256_decoder enc, const unsigned char *src, unsigned char *dst, unsigned char *bxor);
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void psync_aes256_decode_4blocks_consec_xor_sw(psync_aes256_decoder enc, const unsigned char *src, unsigned char *dst, unsigned char *bxor);
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static inline void psync_aes256_encode_block(psync_aes256_encoder enc, const unsigned char *src, unsigned char *dst){
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if (likely(psync_ssl_hw_aes))
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psync_aes256_encode_block_hw(enc, src, dst);
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else
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AES_encrypt(src, dst, enc);
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}
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static inline void psync_aes256_decode_block(psync_aes256_decoder enc, const unsigned char *src, unsigned char *dst){
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if (likely(psync_ssl_hw_aes))
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psync_aes256_decode_block_hw(enc, src, dst);
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else
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AES_decrypt(src, dst, enc);
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}
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static inline void psync_aes256_encode_2blocks_consec(psync_aes256_decoder enc, const unsigned char *src, unsigned char *dst){
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if (likely(psync_ssl_hw_aes))
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psync_aes256_encode_2blocks_consec_hw(enc, src, dst);
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else{
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AES_encrypt(src, dst, enc);
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AES_encrypt(src+PSYNC_AES256_BLOCK_SIZE, dst+PSYNC_AES256_BLOCK_SIZE, enc);
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}
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}
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static inline void psync_aes256_decode_2blocks_consec(psync_aes256_decoder enc, const unsigned char *src, unsigned char *dst){
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if (likely(psync_ssl_hw_aes))
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psync_aes256_decode_2blocks_consec_hw(enc, src, dst);
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else{
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AES_decrypt(src, dst, enc);
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AES_decrypt(src+PSYNC_AES256_BLOCK_SIZE, dst+PSYNC_AES256_BLOCK_SIZE, enc);
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}
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}
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static inline void psync_aes256_decode_4blocks_consec_xor(psync_aes256_decoder enc, const unsigned char *src, unsigned char *dst, unsigned char *bxor){
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if (psync_ssl_hw_aes)
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psync_aes256_decode_4blocks_consec_xor_hw(enc, src, dst, bxor);
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else
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psync_aes256_decode_4blocks_consec_xor_sw(enc, src, dst, bxor);
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}
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#else
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static inline void psync_aes256_encode_block(psync_aes256_encoder enc, const unsigned char *src, unsigned char *dst){
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AES_encrypt(src, dst, enc);
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}
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static inline void psync_aes256_decode_block(psync_aes256_decoder enc, const unsigned char *src, unsigned char *dst){
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AES_decrypt(src, dst, enc);
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}
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static inline void psync_aes256_decode_2blocks_consec(psync_aes256_decoder enc, const unsigned char *src, unsigned char *dst){
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AES_decrypt(src, dst, enc);
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AES_decrypt(src+PSYNC_AES256_BLOCK_SIZE, dst+PSYNC_AES256_BLOCK_SIZE, enc);
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}
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static inline void void psync_aes256_decode_4blocks_consec_xor(psync_aes256_decoder enc, const unsigned char *src, unsigned char *dst, unsigned char *bxor){
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unsigned long i;
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AES_decrypt(src, dst, enc);
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AES_decrypt(src+PSYNC_AES256_BLOCK_SIZE, dst+PSYNC_AES256_BLOCK_SIZE, enc);
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AES_decrypt(src+PSYNC_AES256_BLOCK_SIZE*2, dst+PSYNC_AES256_BLOCK_SIZE*2, enc);
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AES_decrypt(src+PSYNC_AES256_BLOCK_SIZE*3, dst+PSYNC_AES256_BLOCK_SIZE*3, enc);
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for (i=0; i<PSYNC_AES256_BLOCK_SIZE*4/sizeof(unsigned long); i++)
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((unsigned long *)dst)[i]^=((unsigned long *)bxor)[i];
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}
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#endif
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#endif
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