Deleting OpenSSL module and library

1 files changed, 0 insertions, 1262 deletions

diff --git a/thirdparty/openssl/crypto/bn/bn_nist.c b/thirdparty/openssl/crypto/bn/bn_nist.c
deleted file mode 100644
index 4a45404c6f..0000000000
--- a/thirdparty/openssl/crypto/bn/bn_nist.c
+++ /dev/null
@@ -1,1262 +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++) {
-        t_d[i] = (val >> BN_NIST_521_RSHIFT |
-                  (tmp = t_d[i + 1]) << BN_NIST_521_LSHIFT) & BN_MASK2;
-        val = tmp;
-    }
-    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;
-}