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Annotation of qemu/roms/ipxe/src/crypto/axtls/bigint.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  *  Copyright(C) 2006 Cameron Rich
                      3:  *
                      4:  *  This library is free software; you can redistribute it and/or modify
                      5:  *  it under the terms of the GNU Lesser General Public License as published by
                      6:  *  the Free Software Foundation; either version 2 of the License, or
                      7:  *  (at your option) any later version.
                      8:  *
                      9:  *  This library is distributed in the hope that it will be useful,
                     10:  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
                     11:  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     12:  *  GNU Lesser General Public License for more details.
                     13:  *
                     14:  *  You should have received a copy of the GNU Lesser General Public License
                     15:  *  along with this library; if not, write to the Free Software
                     16:  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
                     17:  */
                     18: 
                     19: FILE_LICENCE ( GPL2_OR_LATER );
                     20: 
                     21: #ifndef BIGINT_HEADER
                     22: #define BIGINT_HEADER
                     23: 
                     24: /* enable features based on a 'super-set' capbaility. */
                     25: #if defined(CONFIG_SSL_FULL_MODE) 
                     26: #define CONFIG_SSL_ENABLE_CLIENT
                     27: #define CONFIG_SSL_CERT_VERIFICATION
                     28: #elif defined(CONFIG_SSL_ENABLE_CLIENT)
                     29: #define CONFIG_SSL_CERT_VERIFICATION
                     30: #endif
                     31: 
                     32: #include "os_port.h"
                     33: #include "bigint_impl.h"
                     34: 
                     35: #ifndef CONFIG_BIGINT_CHECK_ON
                     36: #define check(A)                /**< disappears in normal production mode */
                     37: #endif
                     38: BI_CTX *bi_initialize(void);
                     39: void bi_terminate(BI_CTX *ctx);
                     40: void bi_permanent(bigint *bi);
                     41: void bi_depermanent(bigint *bi);
                     42: void bi_free(BI_CTX *ctx, bigint *bi);
                     43: bigint *bi_copy(bigint *bi);
                     44: bigint *bi_clone(BI_CTX *ctx, const bigint *bi);
                     45: void bi_export(BI_CTX *ctx, bigint *bi, uint8_t *data, int size);
                     46: bigint *bi_import(BI_CTX *ctx, const uint8_t *data, int len);
                     47: bigint *int_to_bi(BI_CTX *ctx, comp i);
                     48: 
                     49: /* the functions that actually do something interesting */
                     50: bigint *bi_add(BI_CTX *ctx, bigint *bia, bigint *bib);
                     51: bigint *bi_subtract(BI_CTX *ctx, bigint *bia, 
                     52:         bigint *bib, int *is_negative);
                     53: bigint *bi_divide(BI_CTX *ctx, bigint *bia, bigint *bim, int is_mod);
                     54: bigint *bi_multiply(BI_CTX *ctx, bigint *bia, bigint *bib);
                     55: bigint *bi_mod_power(BI_CTX *ctx, bigint *bi, bigint *biexp);
                     56: bigint *bi_mod_power2(BI_CTX *ctx, bigint *bi, bigint *bim, bigint *biexp);
                     57: int bi_compare(bigint *bia, bigint *bib);
                     58: void bi_set_mod(BI_CTX *ctx, bigint *bim, int mod_offset);
                     59: void bi_free_mod(BI_CTX *ctx, int mod_offset);
                     60: 
                     61: #ifdef CONFIG_SSL_FULL_MODE
                     62: void bi_print(const char *label, bigint *bi);
                     63: bigint *bi_str_import(BI_CTX *ctx, const char *data);
                     64: #endif
                     65: 
                     66: /**
                     67:  * @def bi_mod
                     68:  * Find the residue of B. bi_set_mod() must be called before hand.
                     69:  */
                     70: #define bi_mod(A, B)      bi_divide(A, B, ctx->bi_mod[ctx->mod_offset], 1)
                     71: 
                     72: /**
                     73:  * bi_residue() is technically the same as bi_mod(), but it uses the
                     74:  * appropriate reduction technique (which is bi_mod() when doing classical
                     75:  * reduction).
                     76:  */
                     77: #if defined(CONFIG_BIGINT_MONTGOMERY)
                     78: #define bi_residue(A, B)         bi_mont(A, B)
                     79: bigint *bi_mont(BI_CTX *ctx, bigint *bixy);
                     80: #elif defined(CONFIG_BIGINT_BARRETT)
                     81: #define bi_residue(A, B)         bi_barrett(A, B)
                     82: bigint *bi_barrett(BI_CTX *ctx, bigint *bi);
                     83: #else /* if defined(CONFIG_BIGINT_CLASSICAL) */
                     84: #define bi_residue(A, B)         bi_mod(A, B)
                     85: #endif
                     86: 
                     87: #ifdef CONFIG_BIGINT_SQUARE
                     88: bigint *bi_square(BI_CTX *ctx, bigint *bi);
                     89: #else
                     90: #define bi_square(A, B)     bi_multiply(A, bi_copy(B), B)
                     91: #endif
                     92: 
                     93: #endif

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