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Diffstat (limited to 'drivers/builtin_openssl/crypto/bn/bn_nist.c')
-rw-r--r--drivers/builtin_openssl/crypto/bn/bn_nist.c1109
1 files changed, 0 insertions, 1109 deletions
diff --git a/drivers/builtin_openssl/crypto/bn/bn_nist.c b/drivers/builtin_openssl/crypto/bn/bn_nist.c
deleted file mode 100644
index e22968d4a3..0000000000
--- a/drivers/builtin_openssl/crypto/bn/bn_nist.c
+++ /dev/null
@@ -1,1109 +0,0 @@
-/* crypto/bn/bn_nist.c */
-/*
- * Written by Nils Larsch for the OpenSSL project
- */
-/* ====================================================================
- * Copyright (c) 1998-2005 The OpenSSL Project. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * openssl-core@openssl.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com). This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
- *
- */
-
-#include "bn_lcl.h"
-#include "cryptlib.h"
-
-
-#define BN_NIST_192_TOP (192+BN_BITS2-1)/BN_BITS2
-#define BN_NIST_224_TOP (224+BN_BITS2-1)/BN_BITS2
-#define BN_NIST_256_TOP (256+BN_BITS2-1)/BN_BITS2
-#define BN_NIST_384_TOP (384+BN_BITS2-1)/BN_BITS2
-#define BN_NIST_521_TOP (521+BN_BITS2-1)/BN_BITS2
-
-/* pre-computed tables are "carry-less" values of modulus*(i+1) */
-#if BN_BITS2 == 64
-static const BN_ULONG _nist_p_192[][BN_NIST_192_TOP] = {
- {0xFFFFFFFFFFFFFFFFULL,0xFFFFFFFFFFFFFFFEULL,0xFFFFFFFFFFFFFFFFULL},
- {0xFFFFFFFFFFFFFFFEULL,0xFFFFFFFFFFFFFFFDULL,0xFFFFFFFFFFFFFFFFULL},
- {0xFFFFFFFFFFFFFFFDULL,0xFFFFFFFFFFFFFFFCULL,0xFFFFFFFFFFFFFFFFULL}
- };
-static const BN_ULONG _nist_p_192_sqr[] = {
- 0x0000000000000001ULL,0x0000000000000002ULL,0x0000000000000001ULL,
- 0xFFFFFFFFFFFFFFFEULL,0xFFFFFFFFFFFFFFFDULL,0xFFFFFFFFFFFFFFFFULL
- };
-static const BN_ULONG _nist_p_224[][BN_NIST_224_TOP] = {
- {0x0000000000000001ULL,0xFFFFFFFF00000000ULL,
- 0xFFFFFFFFFFFFFFFFULL,0x00000000FFFFFFFFULL},
- {0x0000000000000002ULL,0xFFFFFFFE00000000ULL,
- 0xFFFFFFFFFFFFFFFFULL,0x00000001FFFFFFFFULL} /* this one is "carry-full" */
- };
-static const BN_ULONG _nist_p_224_sqr[] = {
- 0x0000000000000001ULL,0xFFFFFFFE00000000ULL,
- 0xFFFFFFFFFFFFFFFFULL,0x0000000200000000ULL,
- 0x0000000000000000ULL,0xFFFFFFFFFFFFFFFEULL,
- 0xFFFFFFFFFFFFFFFFULL
- };
-static const BN_ULONG _nist_p_256[][BN_NIST_256_TOP] = {
- {0xFFFFFFFFFFFFFFFFULL,0x00000000FFFFFFFFULL,
- 0x0000000000000000ULL,0xFFFFFFFF00000001ULL},
- {0xFFFFFFFFFFFFFFFEULL,0x00000001FFFFFFFFULL,
- 0x0000000000000000ULL,0xFFFFFFFE00000002ULL},
- {0xFFFFFFFFFFFFFFFDULL,0x00000002FFFFFFFFULL,
- 0x0000000000000000ULL,0xFFFFFFFD00000003ULL},
- {0xFFFFFFFFFFFFFFFCULL,0x00000003FFFFFFFFULL,
- 0x0000000000000000ULL,0xFFFFFFFC00000004ULL},
- {0xFFFFFFFFFFFFFFFBULL,0x00000004FFFFFFFFULL,
- 0x0000000000000000ULL,0xFFFFFFFB00000005ULL},
- };
-static const BN_ULONG _nist_p_256_sqr[] = {
- 0x0000000000000001ULL,0xFFFFFFFE00000000ULL,
- 0xFFFFFFFFFFFFFFFFULL,0x00000001FFFFFFFEULL,
- 0x00000001FFFFFFFEULL,0x00000001FFFFFFFEULL,
- 0xFFFFFFFE00000001ULL,0xFFFFFFFE00000002ULL
- };
-static const BN_ULONG _nist_p_384[][BN_NIST_384_TOP] = {
- {0x00000000FFFFFFFFULL,0xFFFFFFFF00000000ULL,0xFFFFFFFFFFFFFFFEULL,
- 0xFFFFFFFFFFFFFFFFULL,0xFFFFFFFFFFFFFFFFULL,0xFFFFFFFFFFFFFFFFULL},
- {0x00000001FFFFFFFEULL,0xFFFFFFFE00000000ULL,0xFFFFFFFFFFFFFFFDULL,
- 0xFFFFFFFFFFFFFFFFULL,0xFFFFFFFFFFFFFFFFULL,0xFFFFFFFFFFFFFFFFULL},
- {0x00000002FFFFFFFDULL,0xFFFFFFFD00000000ULL,0xFFFFFFFFFFFFFFFCULL,
- 0xFFFFFFFFFFFFFFFFULL,0xFFFFFFFFFFFFFFFFULL,0xFFFFFFFFFFFFFFFFULL},
- {0x00000003FFFFFFFCULL,0xFFFFFFFC00000000ULL,0xFFFFFFFFFFFFFFFBULL,
- 0xFFFFFFFFFFFFFFFFULL,0xFFFFFFFFFFFFFFFFULL,0xFFFFFFFFFFFFFFFFULL},
- {0x00000004FFFFFFFBULL,0xFFFFFFFB00000000ULL,0xFFFFFFFFFFFFFFFAULL,
- 0xFFFFFFFFFFFFFFFFULL,0xFFFFFFFFFFFFFFFFULL,0xFFFFFFFFFFFFFFFFULL},
- };
-static const BN_ULONG _nist_p_384_sqr[] = {
- 0xFFFFFFFE00000001ULL,0x0000000200000000ULL,0xFFFFFFFE00000000ULL,
- 0x0000000200000000ULL,0x0000000000000001ULL,0x0000000000000000ULL,
- 0x00000001FFFFFFFEULL,0xFFFFFFFE00000000ULL,0xFFFFFFFFFFFFFFFDULL,
- 0xFFFFFFFFFFFFFFFFULL,0xFFFFFFFFFFFFFFFFULL,0xFFFFFFFFFFFFFFFFULL
- };
-static const BN_ULONG _nist_p_521[] =
- {0xFFFFFFFFFFFFFFFFULL,0xFFFFFFFFFFFFFFFFULL,
- 0xFFFFFFFFFFFFFFFFULL,0xFFFFFFFFFFFFFFFFULL,
- 0xFFFFFFFFFFFFFFFFULL,0xFFFFFFFFFFFFFFFFULL,
- 0xFFFFFFFFFFFFFFFFULL,0xFFFFFFFFFFFFFFFFULL,
- 0x00000000000001FFULL};
-static const BN_ULONG _nist_p_521_sqr[] = {
- 0x0000000000000001ULL,0x0000000000000000ULL,0x0000000000000000ULL,
- 0x0000000000000000ULL,0x0000000000000000ULL,0x0000000000000000ULL,
- 0x0000000000000000ULL,0x0000000000000000ULL,0xFFFFFFFFFFFFFC00ULL,
- 0xFFFFFFFFFFFFFFFFULL,0xFFFFFFFFFFFFFFFFULL,0xFFFFFFFFFFFFFFFFULL,
- 0xFFFFFFFFFFFFFFFFULL,0xFFFFFFFFFFFFFFFFULL,0xFFFFFFFFFFFFFFFFULL,
- 0xFFFFFFFFFFFFFFFFULL,0x000000000003FFFFULL
- };
-#elif BN_BITS2 == 32
-static const BN_ULONG _nist_p_192[][BN_NIST_192_TOP] = {
- {0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFE,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF},
- {0xFFFFFFFE,0xFFFFFFFF,0xFFFFFFFD,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF},
- {0xFFFFFFFD,0xFFFFFFFF,0xFFFFFFFC,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF}
- };
-static const BN_ULONG _nist_p_192_sqr[] = {
- 0x00000001,0x00000000,0x00000002,0x00000000,0x00000001,0x00000000,
- 0xFFFFFFFE,0xFFFFFFFF,0xFFFFFFFD,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF
- };
-static const BN_ULONG _nist_p_224[][BN_NIST_224_TOP] = {
- {0x00000001,0x00000000,0x00000000,0xFFFFFFFF,
- 0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF},
- {0x00000002,0x00000000,0x00000000,0xFFFFFFFE,
- 0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF}
- };
-static const BN_ULONG _nist_p_224_sqr[] = {
- 0x00000001,0x00000000,0x00000000,0xFFFFFFFE,
- 0xFFFFFFFF,0xFFFFFFFF,0x00000000,0x00000002,
- 0x00000000,0x00000000,0xFFFFFFFE,0xFFFFFFFF,
- 0xFFFFFFFF,0xFFFFFFFF
- };
-static const BN_ULONG _nist_p_256[][BN_NIST_256_TOP] = {
- {0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0x00000000,
- 0x00000000,0x00000000,0x00000001,0xFFFFFFFF},
- {0xFFFFFFFE,0xFFFFFFFF,0xFFFFFFFF,0x00000001,
- 0x00000000,0x00000000,0x00000002,0xFFFFFFFE},
- {0xFFFFFFFD,0xFFFFFFFF,0xFFFFFFFF,0x00000002,
- 0x00000000,0x00000000,0x00000003,0xFFFFFFFD},
- {0xFFFFFFFC,0xFFFFFFFF,0xFFFFFFFF,0x00000003,
- 0x00000000,0x00000000,0x00000004,0xFFFFFFFC},
- {0xFFFFFFFB,0xFFFFFFFF,0xFFFFFFFF,0x00000004,
- 0x00000000,0x00000000,0x00000005,0xFFFFFFFB},
- };
-static const BN_ULONG _nist_p_256_sqr[] = {
- 0x00000001,0x00000000,0x00000000,0xFFFFFFFE,
- 0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFE,0x00000001,
- 0xFFFFFFFE,0x00000001,0xFFFFFFFE,0x00000001,
- 0x00000001,0xFFFFFFFE,0x00000002,0xFFFFFFFE
- };
-static const BN_ULONG _nist_p_384[][BN_NIST_384_TOP] = {
- {0xFFFFFFFF,0x00000000,0x00000000,0xFFFFFFFF,0xFFFFFFFE,0xFFFFFFFF,
- 0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF},
- {0xFFFFFFFE,0x00000001,0x00000000,0xFFFFFFFE,0xFFFFFFFD,0xFFFFFFFF,
- 0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF},
- {0xFFFFFFFD,0x00000002,0x00000000,0xFFFFFFFD,0xFFFFFFFC,0xFFFFFFFF,
- 0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF},
- {0xFFFFFFFC,0x00000003,0x00000000,0xFFFFFFFC,0xFFFFFFFB,0xFFFFFFFF,
- 0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF},
- {0xFFFFFFFB,0x00000004,0x00000000,0xFFFFFFFB,0xFFFFFFFA,0xFFFFFFFF,
- 0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF},
- };
-static const BN_ULONG _nist_p_384_sqr[] = {
- 0x00000001,0xFFFFFFFE,0x00000000,0x00000002,0x00000000,0xFFFFFFFE,
- 0x00000000,0x00000002,0x00000001,0x00000000,0x00000000,0x00000000,
- 0xFFFFFFFE,0x00000001,0x00000000,0xFFFFFFFE,0xFFFFFFFD,0xFFFFFFFF,
- 0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF
- };
-static const BN_ULONG _nist_p_521[] = {0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,
- 0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,
- 0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,
- 0xFFFFFFFF,0x000001FF};
-static const BN_ULONG _nist_p_521_sqr[] = {
- 0x00000001,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
- 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
- 0x00000000,0x00000000,0x00000000,0x00000000,0xFFFFFC00,0xFFFFFFFF,
- 0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,
- 0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,
- 0xFFFFFFFF,0xFFFFFFFF,0x0003FFFF
- };
-#else
-#error "unsupported BN_BITS2"
-#endif
-
-
-static const BIGNUM _bignum_nist_p_192 =
- {
- (BN_ULONG *)_nist_p_192[0],
- BN_NIST_192_TOP,
- BN_NIST_192_TOP,
- 0,
- BN_FLG_STATIC_DATA
- };
-
-static const BIGNUM _bignum_nist_p_224 =
- {
- (BN_ULONG *)_nist_p_224[0],
- BN_NIST_224_TOP,
- BN_NIST_224_TOP,
- 0,
- BN_FLG_STATIC_DATA
- };
-
-static const BIGNUM _bignum_nist_p_256 =
- {
- (BN_ULONG *)_nist_p_256[0],
- BN_NIST_256_TOP,
- BN_NIST_256_TOP,
- 0,
- BN_FLG_STATIC_DATA
- };
-
-static const BIGNUM _bignum_nist_p_384 =
- {
- (BN_ULONG *)_nist_p_384[0],
- BN_NIST_384_TOP,
- BN_NIST_384_TOP,
- 0,
- BN_FLG_STATIC_DATA
- };
-
-static const BIGNUM _bignum_nist_p_521 =
- {
- (BN_ULONG *)_nist_p_521,
- BN_NIST_521_TOP,
- BN_NIST_521_TOP,
- 0,
- BN_FLG_STATIC_DATA
- };
-
-
-const BIGNUM *BN_get0_nist_prime_192(void)
- {
- return &_bignum_nist_p_192;
- }
-
-const BIGNUM *BN_get0_nist_prime_224(void)
- {
- return &_bignum_nist_p_224;
- }
-
-const BIGNUM *BN_get0_nist_prime_256(void)
- {
- return &_bignum_nist_p_256;
- }
-
-const BIGNUM *BN_get0_nist_prime_384(void)
- {
- return &_bignum_nist_p_384;
- }
-
-const BIGNUM *BN_get0_nist_prime_521(void)
- {
- return &_bignum_nist_p_521;
- }
-
-
-static void nist_cp_bn_0(BN_ULONG *dst, const BN_ULONG *src, int top, int max)
- {
- int i;
-
-#ifdef BN_DEBUG
- OPENSSL_assert(top <= max);
-#endif
- for (i = 0; i < top; i++)
- dst[i] = src[i];
- for (; i < max; i++)
- dst[i] = 0;
- }
-
-static void nist_cp_bn(BN_ULONG *dst, const BN_ULONG *src, int top)
- {
- int i;
-
- for (i = 0; i < top; i++)
- dst[i] = src[i];
- }
-
-#if BN_BITS2 == 64
-#define bn_cp_64(to, n, from, m) (to)[n] = (m>=0)?((from)[m]):0;
-#define bn_64_set_0(to, n) (to)[n] = (BN_ULONG)0;
-/*
- * two following macros are implemented under assumption that they
- * are called in a sequence with *ascending* n, i.e. as they are...
- */
-#define bn_cp_32_naked(to, n, from, m) (((n)&1)?(to[(n)/2]|=((m)&1)?(from[(m)/2]&BN_MASK2h):(from[(m)/2]<<32))\
- :(to[(n)/2] =((m)&1)?(from[(m)/2]>>32):(from[(m)/2]&BN_MASK2l)))
-#define bn_32_set_0(to, n) (((n)&1)?(to[(n)/2]&=BN_MASK2l):(to[(n)/2]=0));
-#define bn_cp_32(to,n,from,m) ((m)>=0)?bn_cp_32_naked(to,n,from,m):bn_32_set_0(to,n)
-# if defined(L_ENDIAN)
-# if defined(__arch64__)
-# define NIST_INT64 long
-# else
-# define NIST_INT64 long long
-# endif
-# endif
-#else
-#define bn_cp_64(to, n, from, m) \
- { \
- bn_cp_32(to, (n)*2, from, (m)*2); \
- bn_cp_32(to, (n)*2+1, from, (m)*2+1); \
- }
-#define bn_64_set_0(to, n) \
- { \
- bn_32_set_0(to, (n)*2); \
- bn_32_set_0(to, (n)*2+1); \
- }
-#define bn_cp_32(to, n, from, m) (to)[n] = (m>=0)?((from)[m]):0;
-#define bn_32_set_0(to, n) (to)[n] = (BN_ULONG)0;
-# if defined(_WIN32) && !defined(__GNUC__)
-# define NIST_INT64 __int64
-# elif defined(BN_LLONG)
-# define NIST_INT64 long long
-# endif
-#endif /* BN_BITS2 != 64 */
-
-#define nist_set_192(to, from, a1, a2, a3) \
- { \
- bn_cp_64(to, 0, from, (a3) - 3) \
- bn_cp_64(to, 1, from, (a2) - 3) \
- bn_cp_64(to, 2, from, (a1) - 3) \
- }
-
-int BN_nist_mod_192(BIGNUM *r, const BIGNUM *a, const BIGNUM *field,
- BN_CTX *ctx)
- {
- int top = a->top, i;
- int carry;
- register BN_ULONG *r_d, *a_d = a->d;
- union {
- BN_ULONG bn[BN_NIST_192_TOP];
- unsigned int ui[BN_NIST_192_TOP*sizeof(BN_ULONG)/sizeof(unsigned int)];
- } buf;
- BN_ULONG c_d[BN_NIST_192_TOP],
- *res;
- PTR_SIZE_INT mask;
- static const BIGNUM _bignum_nist_p_192_sqr = {
- (BN_ULONG *)_nist_p_192_sqr,
- sizeof(_nist_p_192_sqr)/sizeof(_nist_p_192_sqr[0]),
- sizeof(_nist_p_192_sqr)/sizeof(_nist_p_192_sqr[0]),
- 0,BN_FLG_STATIC_DATA };
-
- field = &_bignum_nist_p_192; /* just to make sure */
-
- if (BN_is_negative(a) || BN_ucmp(a,&_bignum_nist_p_192_sqr)>=0)
- return BN_nnmod(r, a, field, ctx);
-
- i = BN_ucmp(field, a);
- if (i == 0)
- {
- BN_zero(r);
- return 1;
- }
- else if (i > 0)
- return (r == a) ? 1 : (BN_copy(r ,a) != NULL);
-
- if (r != a)
- {
- if (!bn_wexpand(r, BN_NIST_192_TOP))
- return 0;
- r_d = r->d;
- nist_cp_bn(r_d, a_d, BN_NIST_192_TOP);
- }
- else
- r_d = a_d;
-
- nist_cp_bn_0(buf.bn, a_d + BN_NIST_192_TOP, top - BN_NIST_192_TOP, BN_NIST_192_TOP);
-
-#if defined(NIST_INT64)
- {
- NIST_INT64 acc; /* accumulator */
- unsigned int *rp=(unsigned int *)r_d;
- const unsigned int *bp=(const unsigned int *)buf.ui;
-
- acc = rp[0]; acc += bp[3*2-6];
- acc += bp[5*2-6]; rp[0] = (unsigned int)acc; acc >>= 32;
-
- acc += rp[1]; acc += bp[3*2-5];
- acc += bp[5*2-5]; rp[1] = (unsigned int)acc; acc >>= 32;
-
- acc += rp[2]; acc += bp[3*2-6];
- acc += bp[4*2-6];
- acc += bp[5*2-6]; rp[2] = (unsigned int)acc; acc >>= 32;
-
- acc += rp[3]; acc += bp[3*2-5];
- acc += bp[4*2-5];
- acc += bp[5*2-5]; rp[3] = (unsigned int)acc; acc >>= 32;
-
- acc += rp[4]; acc += bp[4*2-6];
- acc += bp[5*2-6]; rp[4] = (unsigned int)acc; acc >>= 32;
-
- acc += rp[5]; acc += bp[4*2-5];
- acc += bp[5*2-5]; rp[5] = (unsigned int)acc;
-
- carry = (int)(acc>>32);
- }
-#else
- {
- BN_ULONG t_d[BN_NIST_192_TOP];
-
- nist_set_192(t_d, buf.bn, 0, 3, 3);
- carry = (int)bn_add_words(r_d, r_d, t_d, BN_NIST_192_TOP);
- nist_set_192(t_d, buf.bn, 4, 4, 0);
- carry += (int)bn_add_words(r_d, r_d, t_d, BN_NIST_192_TOP);
- nist_set_192(t_d, buf.bn, 5, 5, 5)
- carry += (int)bn_add_words(r_d, r_d, t_d, BN_NIST_192_TOP);
- }
-#endif
- if (carry > 0)
- carry = (int)bn_sub_words(r_d,r_d,_nist_p_192[carry-1],BN_NIST_192_TOP);
- else
- carry = 1;
-
- /*
- * we need 'if (carry==0 || result>=modulus) result-=modulus;'
- * as comparison implies subtraction, we can write
- * 'tmp=result-modulus; if (!carry || !borrow) result=tmp;'
- * this is what happens below, but without explicit if:-) a.
- */
- mask = 0-(PTR_SIZE_INT)bn_sub_words(c_d,r_d,_nist_p_192[0],BN_NIST_192_TOP);
- mask &= 0-(PTR_SIZE_INT)carry;
- res = c_d;
- res = (BN_ULONG *)
- (((PTR_SIZE_INT)res&~mask) | ((PTR_SIZE_INT)r_d&mask));
- nist_cp_bn(r_d, res, BN_NIST_192_TOP);
- r->top = BN_NIST_192_TOP;
- bn_correct_top(r);
-
- return 1;
- }
-
-typedef BN_ULONG (*bn_addsub_f)(BN_ULONG *,const BN_ULONG *,const BN_ULONG *,int);
-
-#define nist_set_224(to, from, a1, a2, a3, a4, a5, a6, a7) \
- { \
- bn_cp_32(to, 0, from, (a7) - 7) \
- bn_cp_32(to, 1, from, (a6) - 7) \
- bn_cp_32(to, 2, from, (a5) - 7) \
- bn_cp_32(to, 3, from, (a4) - 7) \
- bn_cp_32(to, 4, from, (a3) - 7) \
- bn_cp_32(to, 5, from, (a2) - 7) \
- bn_cp_32(to, 6, from, (a1) - 7) \
- }
-
-int BN_nist_mod_224(BIGNUM *r, const BIGNUM *a, const BIGNUM *field,
- BN_CTX *ctx)
- {
- int top = a->top, i;
- int carry;
- BN_ULONG *r_d, *a_d = a->d;
- union {
- BN_ULONG bn[BN_NIST_224_TOP];
- unsigned int ui[BN_NIST_224_TOP*sizeof(BN_ULONG)/sizeof(unsigned int)];
- } buf;
- BN_ULONG c_d[BN_NIST_224_TOP],
- *res;
- PTR_SIZE_INT mask;
- union { bn_addsub_f f; PTR_SIZE_INT p; } u;
- static const BIGNUM _bignum_nist_p_224_sqr = {
- (BN_ULONG *)_nist_p_224_sqr,
- sizeof(_nist_p_224_sqr)/sizeof(_nist_p_224_sqr[0]),
- sizeof(_nist_p_224_sqr)/sizeof(_nist_p_224_sqr[0]),
- 0,BN_FLG_STATIC_DATA };
-
-
- field = &_bignum_nist_p_224; /* just to make sure */
-
- if (BN_is_negative(a) || BN_ucmp(a,&_bignum_nist_p_224_sqr)>=0)
- return BN_nnmod(r, a, field, ctx);
-
- i = BN_ucmp(field, a);
- if (i == 0)
- {
- BN_zero(r);
- return 1;
- }
- else if (i > 0)
- return (r == a)? 1 : (BN_copy(r ,a) != NULL);
-
- if (r != a)
- {
- if (!bn_wexpand(r, BN_NIST_224_TOP))
- return 0;
- r_d = r->d;
- nist_cp_bn(r_d, a_d, BN_NIST_224_TOP);
- }
- else
- r_d = a_d;
-
-#if BN_BITS2==64
- /* copy upper 256 bits of 448 bit number ... */
- nist_cp_bn_0(c_d, a_d + (BN_NIST_224_TOP-1), top - (BN_NIST_224_TOP-1), BN_NIST_224_TOP);
- /* ... and right shift by 32 to obtain upper 224 bits */
- nist_set_224(buf.bn, c_d, 14, 13, 12, 11, 10, 9, 8);
- /* truncate lower part to 224 bits too */
- r_d[BN_NIST_224_TOP-1] &= BN_MASK2l;
-#else
- nist_cp_bn_0(buf.bn, a_d + BN_NIST_224_TOP, top - BN_NIST_224_TOP, BN_NIST_224_TOP);
-#endif
-
-#if defined(NIST_INT64) && BN_BITS2!=64
- {
- NIST_INT64 acc; /* accumulator */
- unsigned int *rp=(unsigned int *)r_d;
- const unsigned int *bp=(const unsigned int *)buf.ui;
-
- acc = rp[0]; acc -= bp[7-7];
- acc -= bp[11-7]; rp[0] = (unsigned int)acc; acc >>= 32;
-
- acc += rp[1]; acc -= bp[8-7];
- acc -= bp[12-7]; rp[1] = (unsigned int)acc; acc >>= 32;
-
- acc += rp[2]; acc -= bp[9-7];
- acc -= bp[13-7]; rp[2] = (unsigned int)acc; acc >>= 32;
-
- acc += rp[3]; acc += bp[7-7];
- acc += bp[11-7];
- acc -= bp[10-7]; rp[3] = (unsigned int)acc; acc>>= 32;
-
- acc += rp[4]; acc += bp[8-7];
- acc += bp[12-7];
- acc -= bp[11-7]; rp[4] = (unsigned int)acc; acc >>= 32;
-
- acc += rp[5]; acc += bp[9-7];
- acc += bp[13-7];
- acc -= bp[12-7]; rp[5] = (unsigned int)acc; acc >>= 32;
-
- acc += rp[6]; acc += bp[10-7];
- acc -= bp[13-7]; rp[6] = (unsigned int)acc;
-
- carry = (int)(acc>>32);
-# if BN_BITS2==64
- rp[7] = carry;
-# endif
- }
-#else
- {
- BN_ULONG t_d[BN_NIST_224_TOP];
-
- nist_set_224(t_d, buf.bn, 10, 9, 8, 7, 0, 0, 0);
- carry = (int)bn_add_words(r_d, r_d, t_d, BN_NIST_224_TOP);
- nist_set_224(t_d, buf.bn, 0, 13, 12, 11, 0, 0, 0);
- carry += (int)bn_add_words(r_d, r_d, t_d, BN_NIST_224_TOP);
- nist_set_224(t_d, buf.bn, 13, 12, 11, 10, 9, 8, 7);
- carry -= (int)bn_sub_words(r_d, r_d, t_d, BN_NIST_224_TOP);
- nist_set_224(t_d, buf.bn, 0, 0, 0, 0, 13, 12, 11);
- carry -= (int)bn_sub_words(r_d, r_d, t_d, BN_NIST_224_TOP);
-
-#if BN_BITS2==64
- carry = (int)(r_d[BN_NIST_224_TOP-1]>>32);
-#endif
- }
-#endif
- u.f = bn_sub_words;
- if (carry > 0)
- {
- carry = (int)bn_sub_words(r_d,r_d,_nist_p_224[carry-1],BN_NIST_224_TOP);
-#if BN_BITS2==64
- carry=(int)(~(r_d[BN_NIST_224_TOP-1]>>32))&1;
-#endif
- }
- else if (carry < 0)
- {
- /* it's a bit more comlicated logic in this case.
- * if bn_add_words yields no carry, then result
- * has to be adjusted by unconditionally *adding*
- * the modulus. but if it does, then result has
- * to be compared to the modulus and conditionally
- * adjusted by *subtracting* the latter. */
- carry = (int)bn_add_words(r_d,r_d,_nist_p_224[-carry-1],BN_NIST_224_TOP);
- mask = 0-(PTR_SIZE_INT)carry;
- u.p = ((PTR_SIZE_INT)bn_sub_words&mask) |
- ((PTR_SIZE_INT)bn_add_words&~mask);
- }
- else
- carry = 1;
-
- /* otherwise it's effectively same as in BN_nist_mod_192... */
- mask = 0-(PTR_SIZE_INT)(*u.f)(c_d,r_d,_nist_p_224[0],BN_NIST_224_TOP);
- mask &= 0-(PTR_SIZE_INT)carry;
- res = c_d;
- res = (BN_ULONG *)(((PTR_SIZE_INT)res&~mask) |
- ((PTR_SIZE_INT)r_d&mask));
- nist_cp_bn(r_d, res, BN_NIST_224_TOP);
- r->top = BN_NIST_224_TOP;
- bn_correct_top(r);
-
- return 1;
- }
-
-#define nist_set_256(to, from, a1, a2, a3, a4, a5, a6, a7, a8) \
- { \
- bn_cp_32(to, 0, from, (a8) - 8) \
- bn_cp_32(to, 1, from, (a7) - 8) \
- bn_cp_32(to, 2, from, (a6) - 8) \
- bn_cp_32(to, 3, from, (a5) - 8) \
- bn_cp_32(to, 4, from, (a4) - 8) \
- bn_cp_32(to, 5, from, (a3) - 8) \
- bn_cp_32(to, 6, from, (a2) - 8) \
- bn_cp_32(to, 7, from, (a1) - 8) \
- }
-
-int BN_nist_mod_256(BIGNUM *r, const BIGNUM *a, const BIGNUM *field,
- BN_CTX *ctx)
- {
- int i, top = a->top;
- int carry = 0;
- register BN_ULONG *a_d = a->d, *r_d;
- union {
- BN_ULONG bn[BN_NIST_256_TOP];
- unsigned int ui[BN_NIST_256_TOP*sizeof(BN_ULONG)/sizeof(unsigned int)];
- } buf;
- BN_ULONG c_d[BN_NIST_256_TOP],
- *res;
- PTR_SIZE_INT mask;
- union { bn_addsub_f f; PTR_SIZE_INT p; } u;
- static const BIGNUM _bignum_nist_p_256_sqr = {
- (BN_ULONG *)_nist_p_256_sqr,
- sizeof(_nist_p_256_sqr)/sizeof(_nist_p_256_sqr[0]),
- sizeof(_nist_p_256_sqr)/sizeof(_nist_p_256_sqr[0]),
- 0,BN_FLG_STATIC_DATA };
-
- field = &_bignum_nist_p_256; /* just to make sure */
-
- if (BN_is_negative(a) || BN_ucmp(a,&_bignum_nist_p_256_sqr)>=0)
- return BN_nnmod(r, a, field, ctx);
-
- i = BN_ucmp(field, a);
- if (i == 0)
- {
- BN_zero(r);
- return 1;
- }
- else if (i > 0)
- return (r == a)? 1 : (BN_copy(r ,a) != NULL);
-
- if (r != a)
- {
- if (!bn_wexpand(r, BN_NIST_256_TOP))
- return 0;
- r_d = r->d;
- nist_cp_bn(r_d, a_d, BN_NIST_256_TOP);
- }
- else
- r_d = a_d;
-
- nist_cp_bn_0(buf.bn, a_d + BN_NIST_256_TOP, top - BN_NIST_256_TOP, BN_NIST_256_TOP);
-
-#if defined(NIST_INT64)
- {
- NIST_INT64 acc; /* accumulator */
- unsigned int *rp=(unsigned int *)r_d;
- const unsigned int *bp=(const unsigned int *)buf.ui;
-
- acc = rp[0]; acc += bp[8-8];
- acc += bp[9-8];
- acc -= bp[11-8];
- acc -= bp[12-8];
- acc -= bp[13-8];
- acc -= bp[14-8]; rp[0] = (unsigned int)acc; acc >>= 32;
-
- acc += rp[1]; acc += bp[9-8];
- acc += bp[10-8];
- acc -= bp[12-8];
- acc -= bp[13-8];
- acc -= bp[14-8];
- acc -= bp[15-8]; rp[1] = (unsigned int)acc; acc >>= 32;
-
- acc += rp[2]; acc += bp[10-8];
- acc += bp[11-8];
- acc -= bp[13-8];
- acc -= bp[14-8];
- acc -= bp[15-8]; rp[2] = (unsigned int)acc; acc >>= 32;
-
- acc += rp[3]; acc += bp[11-8];
- acc += bp[11-8];
- acc += bp[12-8];
- acc += bp[12-8];
- acc += bp[13-8];
- acc -= bp[15-8];
- acc -= bp[8-8];
- acc -= bp[9-8]; rp[3] = (unsigned int)acc; acc >>= 32;
-
- acc += rp[4]; acc += bp[12-8];
- acc += bp[12-8];
- acc += bp[13-8];
- acc += bp[13-8];
- acc += bp[14-8];
- acc -= bp[9-8];
- acc -= bp[10-8]; rp[4] = (unsigned int)acc; acc >>= 32;
-
- acc += rp[5]; acc += bp[13-8];
- acc += bp[13-8];
- acc += bp[14-8];
- acc += bp[14-8];
- acc += bp[15-8];
- acc -= bp[10-8];
- acc -= bp[11-8]; rp[5] = (unsigned int)acc; acc >>= 32;
-
- acc += rp[6]; acc += bp[14-8];
- acc += bp[14-8];
- acc += bp[15-8];
- acc += bp[15-8];
- acc += bp[14-8];
- acc += bp[13-8];
- acc -= bp[8-8];
- acc -= bp[9-8]; rp[6] = (unsigned int)acc; acc >>= 32;
-
- acc += rp[7]; acc += bp[15-8];
- acc += bp[15-8];
- acc += bp[15-8];
- acc += bp[8 -8];
- acc -= bp[10-8];
- acc -= bp[11-8];
- acc -= bp[12-8];
- acc -= bp[13-8]; rp[7] = (unsigned int)acc;
-
- carry = (int)(acc>>32);
- }
-#else
- {
- BN_ULONG t_d[BN_NIST_256_TOP];
-
- /*S1*/
- nist_set_256(t_d, buf.bn, 15, 14, 13, 12, 11, 0, 0, 0);
- /*S2*/
- nist_set_256(c_d, buf.bn, 0, 15, 14, 13, 12, 0, 0, 0);
- carry = (int)bn_add_words(t_d, t_d, c_d, BN_NIST_256_TOP);
- /* left shift */
- {
- register BN_ULONG *ap,t,c;
- ap = t_d;
- c=0;
- for (i = BN_NIST_256_TOP; i != 0; --i)
- {
- t= *ap;
- *(ap++)=((t<<1)|c)&BN_MASK2;
- c=(t & BN_TBIT)?1:0;
- }
- carry <<= 1;
- carry |= c;
- }
- carry += (int)bn_add_words(r_d, r_d, t_d, BN_NIST_256_TOP);
- /*S3*/
- nist_set_256(t_d, buf.bn, 15, 14, 0, 0, 0, 10, 9, 8);
- carry += (int)bn_add_words(r_d, r_d, t_d, BN_NIST_256_TOP);
- /*S4*/
- nist_set_256(t_d, buf.bn, 8, 13, 15, 14, 13, 11, 10, 9);
- carry += (int)bn_add_words(r_d, r_d, t_d, BN_NIST_256_TOP);
- /*D1*/
- nist_set_256(t_d, buf.bn, 10, 8, 0, 0, 0, 13, 12, 11);
- carry -= (int)bn_sub_words(r_d, r_d, t_d, BN_NIST_256_TOP);
- /*D2*/
- nist_set_256(t_d, buf.bn, 11, 9, 0, 0, 15, 14, 13, 12);
- carry -= (int)bn_sub_words(r_d, r_d, t_d, BN_NIST_256_TOP);
- /*D3*/
- nist_set_256(t_d, buf.bn, 12, 0, 10, 9, 8, 15, 14, 13);
- carry -= (int)bn_sub_words(r_d, r_d, t_d, BN_NIST_256_TOP);
- /*D4*/
- nist_set_256(t_d, buf.bn, 13, 0, 11, 10, 9, 0, 15, 14);
- carry -= (int)bn_sub_words(r_d, r_d, t_d, BN_NIST_256_TOP);
-
- }
-#endif
- /* see BN_nist_mod_224 for explanation */
- u.f = bn_sub_words;
- if (carry > 0)
- carry = (int)bn_sub_words(r_d,r_d,_nist_p_256[carry-1],BN_NIST_256_TOP);
- else if (carry < 0)
- {
- carry = (int)bn_add_words(r_d,r_d,_nist_p_256[-carry-1],BN_NIST_256_TOP);
- mask = 0-(PTR_SIZE_INT)carry;
- u.p = ((PTR_SIZE_INT)bn_sub_words&mask) |
- ((PTR_SIZE_INT)bn_add_words&~mask);
- }
- else
- carry = 1;
-
- mask = 0-(PTR_SIZE_INT)(*u.f)(c_d,r_d,_nist_p_256[0],BN_NIST_256_TOP);
- mask &= 0-(PTR_SIZE_INT)carry;
- res = c_d;
- res = (BN_ULONG *)(((PTR_SIZE_INT)res&~mask) |
- ((PTR_SIZE_INT)r_d&mask));
- nist_cp_bn(r_d, res, BN_NIST_256_TOP);
- r->top = BN_NIST_256_TOP;
- bn_correct_top(r);
-
- return 1;
- }
-
-#define nist_set_384(to,from,a1,a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12) \
- { \
- bn_cp_32(to, 0, from, (a12) - 12) \
- bn_cp_32(to, 1, from, (a11) - 12) \
- bn_cp_32(to, 2, from, (a10) - 12) \
- bn_cp_32(to, 3, from, (a9) - 12) \
- bn_cp_32(to, 4, from, (a8) - 12) \
- bn_cp_32(to, 5, from, (a7) - 12) \
- bn_cp_32(to, 6, from, (a6) - 12) \
- bn_cp_32(to, 7, from, (a5) - 12) \
- bn_cp_32(to, 8, from, (a4) - 12) \
- bn_cp_32(to, 9, from, (a3) - 12) \
- bn_cp_32(to, 10, from, (a2) - 12) \
- bn_cp_32(to, 11, from, (a1) - 12) \
- }
-
-int BN_nist_mod_384(BIGNUM *r, const BIGNUM *a, const BIGNUM *field,
- BN_CTX *ctx)
- {
- int i, top = a->top;
- int carry = 0;
- register BN_ULONG *r_d, *a_d = a->d;
- union {
- BN_ULONG bn[BN_NIST_384_TOP];
- unsigned int ui[BN_NIST_384_TOP*sizeof(BN_ULONG)/sizeof(unsigned int)];
- } buf;
- BN_ULONG c_d[BN_NIST_384_TOP],
- *res;
- PTR_SIZE_INT mask;
- union { bn_addsub_f f; PTR_SIZE_INT p; } u;
- static const BIGNUM _bignum_nist_p_384_sqr = {
- (BN_ULONG *)_nist_p_384_sqr,
- sizeof(_nist_p_384_sqr)/sizeof(_nist_p_384_sqr[0]),
- sizeof(_nist_p_384_sqr)/sizeof(_nist_p_384_sqr[0]),
- 0,BN_FLG_STATIC_DATA };
-
-
- field = &_bignum_nist_p_384; /* just to make sure */
-
- if (BN_is_negative(a) || BN_ucmp(a,&_bignum_nist_p_384_sqr)>=0)
- return BN_nnmod(r, a, field, ctx);
-
- i = BN_ucmp(field, a);
- if (i == 0)
- {
- BN_zero(r);
- return 1;
- }
- else if (i > 0)
- return (r == a)? 1 : (BN_copy(r ,a) != NULL);
-
- if (r != a)
- {
- if (!bn_wexpand(r, BN_NIST_384_TOP))
- return 0;
- r_d = r->d;
- nist_cp_bn(r_d, a_d, BN_NIST_384_TOP);
- }
- else
- r_d = a_d;
-
- nist_cp_bn_0(buf.bn, a_d + BN_NIST_384_TOP, top - BN_NIST_384_TOP, BN_NIST_384_TOP);
-
-#if defined(NIST_INT64)
- {
- NIST_INT64 acc; /* accumulator */
- unsigned int *rp=(unsigned int *)r_d;
- const unsigned int *bp=(const unsigned int *)buf.ui;
-
- acc = rp[0]; acc += bp[12-12];
- acc += bp[21-12];
- acc += bp[20-12];
- acc -= bp[23-12]; rp[0] = (unsigned int)acc; acc >>= 32;
-
- acc += rp[1]; acc += bp[13-12];
- acc += bp[22-12];
- acc += bp[23-12];
- acc -= bp[12-12];
- acc -= bp[20-12]; rp[1] = (unsigned int)acc; acc >>= 32;
-
- acc += rp[2]; acc += bp[14-12];
- acc += bp[23-12];
- acc -= bp[13-12];
- acc -= bp[21-12]; rp[2] = (unsigned int)acc; acc >>= 32;
-
- acc += rp[3]; acc += bp[15-12];
- acc += bp[12-12];
- acc += bp[20-12];
- acc += bp[21-12];
- acc -= bp[14-12];
- acc -= bp[22-12];
- acc -= bp[23-12]; rp[3] = (unsigned int)acc; acc >>= 32;
-
- acc += rp[4]; acc += bp[21-12];
- acc += bp[21-12];
- acc += bp[16-12];
- acc += bp[13-12];
- acc += bp[12-12];
- acc += bp[20-12];
- acc += bp[22-12];
- acc -= bp[15-12];
- acc -= bp[23-12];
- acc -= bp[23-12]; rp[4] = (unsigned int)acc; acc >>= 32;
-
- acc += rp[5]; acc += bp[22-12];
- acc += bp[22-12];
- acc += bp[17-12];
- acc += bp[14-12];
- acc += bp[13-12];
- acc += bp[21-12];
- acc += bp[23-12];
- acc -= bp[16-12]; rp[5] = (unsigned int)acc; acc >>= 32;
-
- acc += rp[6]; acc += bp[23-12];
- acc += bp[23-12];
- acc += bp[18-12];
- acc += bp[15-12];
- acc += bp[14-12];
- acc += bp[22-12];
- acc -= bp[17-12]; rp[6] = (unsigned int)acc; acc >>= 32;
-
- acc += rp[7]; acc += bp[19-12];
- acc += bp[16-12];
- acc += bp[15-12];
- acc += bp[23-12];
- acc -= bp[18-12]; rp[7] = (unsigned int)acc; acc >>= 32;
-
- acc += rp[8]; acc += bp[20-12];
- acc += bp[17-12];
- acc += bp[16-12];
- acc -= bp[19-12]; rp[8] = (unsigned int)acc; acc >>= 32;
-
- acc += rp[9]; acc += bp[21-12];
- acc += bp[18-12];
- acc += bp[17-12];
- acc -= bp[20-12]; rp[9] = (unsigned int)acc; acc >>= 32;
-
- acc += rp[10]; acc += bp[22-12];
- acc += bp[19-12];
- acc += bp[18-12];
- acc -= bp[21-12]; rp[10] = (unsigned int)acc; acc >>= 32;
-
- acc += rp[11]; acc += bp[23-12];
- acc += bp[20-12];
- acc += bp[19-12];
- acc -= bp[22-12]; rp[11] = (unsigned int)acc;
-
- carry = (int)(acc>>32);
- }
-#else
- {
- BN_ULONG t_d[BN_NIST_384_TOP];
-
- /*S1*/
- nist_set_256(t_d, buf.bn, 0, 0, 0, 0, 0, 23-4, 22-4, 21-4);
- /* left shift */
- {
- register BN_ULONG *ap,t,c;
- ap = t_d;
- c=0;
- for (i = 3; i != 0; --i)
- {
- t= *ap;
- *(ap++)=((t<<1)|c)&BN_MASK2;
- c=(t & BN_TBIT)?1:0;
- }
- *ap=c;
- }
- carry = (int)bn_add_words(r_d+(128/BN_BITS2), r_d+(128/BN_BITS2),
- t_d, BN_NIST_256_TOP);
- /*S2 */
- carry += (int)bn_add_words(r_d, r_d, buf.bn, BN_NIST_384_TOP);
- /*S3*/
- nist_set_384(t_d,buf.bn,20,19,18,17,16,15,14,13,12,23,22,21);
- carry += (int)bn_add_words(r_d, r_d, t_d, BN_NIST_384_TOP);
- /*S4*/
- nist_set_384(t_d,buf.bn,19,18,17,16,15,14,13,12,20,0,23,0);
- carry += (int)bn_add_words(r_d, r_d, t_d, BN_NIST_384_TOP);
- /*S5*/
- nist_set_384(t_d, buf.bn,0,0,0,0,23,22,21,20,0,0,0,0);
- carry += (int)bn_add_words(r_d, r_d, t_d, BN_NIST_384_TOP);
- /*S6*/
- nist_set_384(t_d,buf.bn,0,0,0,0,0,0,23,22,21,0,0,20);
- carry += (int)bn_add_words(r_d, r_d, t_d, BN_NIST_384_TOP);
- /*D1*/
- nist_set_384(t_d,buf.bn,22,21,20,19,18,17,16,15,14,13,12,23);
- carry -= (int)bn_sub_words(r_d, r_d, t_d, BN_NIST_384_TOP);
- /*D2*/
- nist_set_384(t_d,buf.bn,0,0,0,0,0,0,0,23,22,21,20,0);
- carry -= (int)bn_sub_words(r_d, r_d, t_d, BN_NIST_384_TOP);
- /*D3*/
- nist_set_384(t_d,buf.bn,0,0,0,0,0,0,0,23,23,0,0,0);
- carry -= (int)bn_sub_words(r_d, r_d, t_d, BN_NIST_384_TOP);
-
- }
-#endif
- /* see BN_nist_mod_224 for explanation */
- u.f = bn_sub_words;
- if (carry > 0)
- carry = (int)bn_sub_words(r_d,r_d,_nist_p_384[carry-1],BN_NIST_384_TOP);
- else if (carry < 0)
- {
- carry = (int)bn_add_words(r_d,r_d,_nist_p_384[-carry-1],BN_NIST_384_TOP);
- mask = 0-(PTR_SIZE_INT)carry;
- u.p = ((PTR_SIZE_INT)bn_sub_words&mask) |
- ((PTR_SIZE_INT)bn_add_words&~mask);
- }
- else
- carry = 1;
-
- mask = 0-(PTR_SIZE_INT)(*u.f)(c_d,r_d,_nist_p_384[0],BN_NIST_384_TOP);
- mask &= 0-(PTR_SIZE_INT)carry;
- res = c_d;
- res = (BN_ULONG *)(((PTR_SIZE_INT)res&~mask) |
- ((PTR_SIZE_INT)r_d&mask));
- nist_cp_bn(r_d, res, BN_NIST_384_TOP);
- r->top = BN_NIST_384_TOP;
- bn_correct_top(r);
-
- return 1;
- }
-
-#define BN_NIST_521_RSHIFT (521%BN_BITS2)
-#define BN_NIST_521_LSHIFT (BN_BITS2-BN_NIST_521_RSHIFT)
-#define BN_NIST_521_TOP_MASK ((BN_ULONG)BN_MASK2>>BN_NIST_521_LSHIFT)
-
-int BN_nist_mod_521(BIGNUM *r, const BIGNUM *a, const BIGNUM *field,
- BN_CTX *ctx)
- {
- int top = a->top, i;
- BN_ULONG *r_d, *a_d = a->d,
- t_d[BN_NIST_521_TOP],
- val,tmp,*res;
- PTR_SIZE_INT mask;
- static const BIGNUM _bignum_nist_p_521_sqr = {
- (BN_ULONG *)_nist_p_521_sqr,
- sizeof(_nist_p_521_sqr)/sizeof(_nist_p_521_sqr[0]),
- sizeof(_nist_p_521_sqr)/sizeof(_nist_p_521_sqr[0]),
- 0,BN_FLG_STATIC_DATA };
-
- field = &_bignum_nist_p_521; /* just to make sure */
-
- if (BN_is_negative(a) || BN_ucmp(a,&_bignum_nist_p_521_sqr)>=0)
- return BN_nnmod(r, a, field, ctx);
-
- i = BN_ucmp(field, a);
- if (i == 0)
- {
- BN_zero(r);
- return 1;
- }
- else if (i > 0)
- return (r == a)? 1 : (BN_copy(r ,a) != NULL);
-
- if (r != a)
- {
- if (!bn_wexpand(r,BN_NIST_521_TOP))
- return 0;
- r_d = r->d;
- nist_cp_bn(r_d,a_d, BN_NIST_521_TOP);
- }
- else
- r_d = a_d;
-
- /* upper 521 bits, copy ... */
- nist_cp_bn_0(t_d,a_d + (BN_NIST_521_TOP-1), top - (BN_NIST_521_TOP-1),BN_NIST_521_TOP);
- /* ... and right shift */
- for (val=t_d[0],i=0; i<BN_NIST_521_TOP-1; i++)
- {
- tmp = val>>BN_NIST_521_RSHIFT;
- val = t_d[i+1];
- t_d[i] = (tmp | val<<BN_NIST_521_LSHIFT) & BN_MASK2;
- }
- t_d[i] = val>>BN_NIST_521_RSHIFT;
- /* lower 521 bits */
- r_d[i] &= BN_NIST_521_TOP_MASK;
-
- bn_add_words(r_d,r_d,t_d,BN_NIST_521_TOP);
- mask = 0-(PTR_SIZE_INT)bn_sub_words(t_d,r_d,_nist_p_521,BN_NIST_521_TOP);
- res = t_d;
- res = (BN_ULONG *)(((PTR_SIZE_INT)res&~mask) |
- ((PTR_SIZE_INT)r_d&mask));
- nist_cp_bn(r_d,res,BN_NIST_521_TOP);
- r->top = BN_NIST_521_TOP;
- bn_correct_top(r);
-
- return 1;
- }
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 09:35:28 +0000