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Dependencies: MAX44000 PWM_Tone_Library nexpaq_mdk
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bigint.h
00001 /* 00002 * Copyright (c) 2007, Cameron Rich 00003 * 00004 * All rights reserved. 00005 * 00006 * Redistribution and use in source and binary forms, with or without 00007 * modification, are permitted provided that the following conditions are met: 00008 * 00009 * * Redistributions of source code must retain the above copyright notice, 00010 * this list of conditions and the following disclaimer. 00011 * * Redistributions in binary form must reproduce the above copyright notice, 00012 * this list of conditions and the following disclaimer in the documentation 00013 * and/or other materials provided with the distribution. 00014 * * Neither the name of the axTLS project nor the names of its contributors 00015 * may be used to endorse or promote products derived from this software 00016 * without specific prior written permission. 00017 * 00018 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00019 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00020 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 00021 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 00022 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 00023 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 00024 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 00025 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 00026 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00027 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00028 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00029 */ 00030 00031 #ifndef BIGINT_HEADER 00032 #define BIGINT_HEADER 00033 00034 #include "crypto.h " 00035 00036 BI_CTX *bi_initialize(void); 00037 void bi_terminate(BI_CTX *ctx); 00038 void bi_permanent(bigint *bi); 00039 void bi_depermanent(bigint *bi); 00040 void bi_clear_cache(BI_CTX *ctx); 00041 void bi_free(BI_CTX *ctx, bigint *bi); 00042 bigint *bi_copy(bigint *bi); 00043 bigint *bi_clone(BI_CTX *ctx, const bigint *bi); 00044 void bi_export(BI_CTX *ctx, bigint *bi, uint8_t *data, int size); 00045 bigint *bi_import(BI_CTX *ctx, const uint8_t *data, int len); 00046 bigint *int_to_bi(BI_CTX *ctx, comp i); 00047 00048 /* the functions that actually do something interesting */ 00049 bigint *bi_add(BI_CTX *ctx, bigint *bia, bigint *bib); 00050 bigint *bi_subtract(BI_CTX *ctx, bigint *bia, 00051 bigint *bib, int *is_negative); 00052 bigint *bi_divide(BI_CTX *ctx, bigint *bia, bigint *bim, int is_mod); 00053 bigint *bi_multiply(BI_CTX *ctx, bigint *bia, bigint *bib); 00054 bigint *bi_mod_power(BI_CTX *ctx, bigint *bi, bigint *biexp); 00055 bigint *bi_mod_power2(BI_CTX *ctx, bigint *bi, bigint *bim, bigint *biexp); 00056 int bi_compare(bigint *bia, bigint *bib); 00057 void bi_set_mod(BI_CTX *ctx, bigint *bim, int mod_offset); 00058 void bi_free_mod(BI_CTX *ctx, int mod_offset); 00059 00060 #ifdef CONFIG_SSL_FULL_MODE 00061 void bi_print(const char *label, bigint *bi); 00062 bigint *bi_str_import(BI_CTX *ctx, const char *data); 00063 #endif 00064 00065 /** 00066 * @def bi_mod 00067 * Find the residue of B. bi_set_mod() must be called before hand. 00068 */ 00069 #define bi_mod(A, B) bi_divide(A, B, ctx->bi_mod[ctx->mod_offset], 1) 00070 00071 /** 00072 * bi_residue() is technically the same as bi_mod(), but it uses the 00073 * appropriate reduction technique (which is bi_mod() when doing classical 00074 * reduction). 00075 */ 00076 #if defined(CONFIG_BIGINT_MONTGOMERY) 00077 #define bi_residue(A, B) bi_mont(A, B) 00078 bigint *bi_mont(BI_CTX *ctx, bigint *bixy); 00079 #elif defined(CONFIG_BIGINT_BARRETT) 00080 #define bi_residue(A, B) bi_barrett(A, B) 00081 bigint *bi_barrett(BI_CTX *ctx, bigint *bi); 00082 #else /* if defined(CONFIG_BIGINT_CLASSICAL) */ 00083 #define bi_residue(A, B) bi_mod(A, B) 00084 #endif 00085 00086 #ifdef CONFIG_BIGINT_SQUARE 00087 bigint *bi_square(BI_CTX *ctx, bigint *bi); 00088 #else 00089 #define bi_square(A, B) bi_multiply(A, bi_copy(B), B) 00090 #endif 00091 00092 #ifdef CONFIG_BIGINT_CRT 00093 bigint *bi_crt(BI_CTX *ctx, bigint *bi, 00094 bigint *dP, bigint *dQ, 00095 bigint *p, bigint *q, 00096 bigint *qInv); 00097 #endif 00098 00099 #endif
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