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