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dir changes - things are broken at the moment

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git-svn-id: svn://svn.code.sf.net/p/axtls/code/trunk@116 9a5d90b5-6617-0410-8a86-bb477d3ed2e3
This commit is contained in:
cameronrich
2007-08-29 09:15:39 +00:00
parent a1bfbe6b07
commit f9ee197cff
40 changed files with 432 additions and 901 deletions
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44
ssl/bigint.c
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@ -54,7 +54,6 @@
#include <stdio.h>
#include <time.h>
#include "bigint.h"
#include "crypto.h"
static bigint *bi_int_multiply(BI_CTX *ctx, bigint *bi, comp i);
static bigint *bi_int_divide(BI_CTX *ctx, bigint *biR, comp denom);
@ -1366,6 +1365,7 @@ static void precompute_slide_window(BI_CTX *ctx, int window, bigint *g1)
* @param ctx [in] The bigint session context.
* @param bi [in] The bigint on which to perform the mod power operation.
* @param biexp [in] The bigint exponent.
* @return The result of the mod exponentiation operation
* @see bi_set_mod().
*/
bigint *bi_mod_power(BI_CTX *ctx, bigint *bi, bigint *biexp)
@ -1467,6 +1467,7 @@ bigint *bi_mod_power(BI_CTX *ctx, bigint *bi, bigint *biexp)
* @param bi [in] The bigint to perform the exp/mod.
* @param bim [in] The temporary modulus.
* @param biexp [in] The bigint exponent.
* @return The result of the mod exponentiation operation
* @see bi_set_mod().
*/
bigint *bi_mod_power2(BI_CTX *ctx, bigint *bi, bigint *bim, bigint *biexp)
@ -1493,4 +1494,45 @@ bigint *bi_mod_power2(BI_CTX *ctx, bigint *bi, bigint *bim, bigint *biexp)
return biR;
}
#endif
#ifdef CONFIG_BIGINT_CRT
/**
* @Use the Chinese Remainder Theorem to quickly perform RSA decrypts.
*
* @param ctx [in] The bigint session context.
* @param bi [in] The bigint to perform the exp/mod.
* @param dP [in] CRT's dP bigint
* @param dQ [in] CRT's dQ bigint
* @param p [in] CRT's p bigint
* @param q [in] CRT's q bigint
* @param qInv [in] CRT's qInv bigint
* @return The result of the CRT operation
*/
bigint *bi_crt(BI_CTX *ctx, bigint *bi,
bigint *dP, bigint *dQ,
bigint *p, bigint *q, bigint *qInv)
{
bigint *m1, *m2, *h;
/* Montgomery has a condition the 0 < x, y < m and these products violate
* that condition. So disable Montgomery when using CRT */
#if defined(CONFIG_BIGINT_MONTGOMERY)
ctx->use_classical = 1;
#endif
ctx->mod_offset = BIGINT_P_OFFSET;
m1 = bi_mod_power(ctx, bi_copy(bi), dP);
ctx->mod_offset = BIGINT_Q_OFFSET;
m2 = bi_mod_power(ctx, bi, dQ);
h = bi_subtract(ctx, bi_add(ctx, m1, p), bi_copy(m2), NULL);
h = bi_multiply(ctx, h, qInv);
ctx->mod_offset = BIGINT_P_OFFSET;
h = bi_residue(ctx, h);
#if defined(CONFIG_BIGINT_MONTGOMERY)
ctx->use_classical = 0; /* reset for any further operation */
#endif
return bi_add(ctx, m2, bi_multiply(ctx, q, h));
}
#endif
/** @} */