1 files changed, 236 insertions, 0 deletions

diff --git a/src/lib/libcrypto/ec/ecp_nist.c b/src/lib/libcrypto/ec/ecp_nist.c
new file mode 100644
index 0000000000..71893d5eab
--- /dev/null
+++ b/src/lib/libcrypto/ec/ecp_nist.c
@@ -0,0 +1,236 @@
+/* crypto/ec/ecp_nist.c */
+/*
+ * Written by Nils Larsch for the OpenSSL project.
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2003 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).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ * Portions of this software developed by SUN MICROSYSTEMS, INC.,
+ * and contributed to the OpenSSL project.
+ */
+
+#include <limits.h>
+
+#include <openssl/err.h>
+#include <openssl/obj_mac.h>
+#include "ec_lcl.h"
+
+const EC_METHOD *EC_GFp_nist_method(void)
+        {
+        static const EC_METHOD ret = {
+                NID_X9_62_prime_field,
+                ec_GFp_simple_group_init,
+                ec_GFp_simple_group_finish,
+                ec_GFp_simple_group_clear_finish,
+                ec_GFp_nist_group_copy,
+                ec_GFp_nist_group_set_curve,
+                ec_GFp_simple_group_get_curve,
+                ec_GFp_simple_group_get_degree,
+                ec_GFp_simple_group_check_discriminant,
+                ec_GFp_simple_point_init,
+                ec_GFp_simple_point_finish,
+                ec_GFp_simple_point_clear_finish,
+                ec_GFp_simple_point_copy,
+                ec_GFp_simple_point_set_to_infinity,
+                ec_GFp_simple_set_Jprojective_coordinates_GFp,
+                ec_GFp_simple_get_Jprojective_coordinates_GFp,
+                ec_GFp_simple_point_set_affine_coordinates,
+                ec_GFp_simple_point_get_affine_coordinates,
+                ec_GFp_simple_set_compressed_coordinates,
+                ec_GFp_simple_point2oct,
+                ec_GFp_simple_oct2point,
+                ec_GFp_simple_add,
+                ec_GFp_simple_dbl,
+                ec_GFp_simple_invert,
+                ec_GFp_simple_is_at_infinity,
+                ec_GFp_simple_is_on_curve,
+                ec_GFp_simple_cmp,
+                ec_GFp_simple_make_affine,
+                ec_GFp_simple_points_make_affine,
+                0 /* mul */,
+                0 /* precompute_mult */,
+                0 /* have_precompute_mult */,   
+                ec_GFp_nist_field_mul,
+                ec_GFp_nist_field_sqr,
+                0 /* field_div */,
+                0 /* field_encode */,
+                0 /* field_decode */,
+                0 /* field_set_to_one */ };
+
+        return &ret;
+        }
+
+#if BN_BITS2 == 64
+#define NO_32_BIT_TYPE
+#endif
+
+int ec_GFp_nist_group_copy(EC_GROUP *dest, const EC_GROUP *src)
+        {
+        dest->field_mod_func = src->field_mod_func;
+
+        return ec_GFp_simple_group_copy(dest, src);
+        }
+
+int ec_GFp_nist_group_set_curve(EC_GROUP *group, const BIGNUM *p,
+        const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx)
+        {
+        int ret = 0;
+        BN_CTX *new_ctx = NULL;
+        BIGNUM *tmp_bn;
+        
+        if (ctx == NULL)
+                if ((ctx = new_ctx = BN_CTX_new()) == NULL) return 0;
+
+        BN_CTX_start(ctx);
+        if ((tmp_bn = BN_CTX_get(ctx)) == NULL) goto err;
+
+        if (BN_ucmp(BN_get0_nist_prime_192(), p) == 0)
+                group->field_mod_func = BN_nist_mod_192;
+        else if (BN_ucmp(BN_get0_nist_prime_224(), p) == 0)
+                {
+#ifndef NO_32_BIT_TYPE
+                group->field_mod_func = BN_nist_mod_224;
+#else
+                ECerr(EC_F_EC_GFP_NIST_GROUP_SET_CURVE, EC_R_NOT_A_SUPPORTED_NIST_PRIME);
+                goto err;
+#endif
+                }
+        else if (BN_ucmp(BN_get0_nist_prime_256(), p) == 0)
+                {
+#ifndef NO_32_BIT_TYPE
+                group->field_mod_func = BN_nist_mod_256;
+#else
+                ECerr(EC_F_EC_GFP_NIST_GROUP_SET_CURVE, EC_R_NOT_A_SUPPORTED_NIST_PRIME);
+                goto err;
+#endif
+                }
+        else if (BN_ucmp(BN_get0_nist_prime_384(), p) == 0)
+                {
+#ifndef NO_32_BIT_TYPE
+                group->field_mod_func = BN_nist_mod_384;
+#else
+                ECerr(EC_F_EC_GFP_NIST_GROUP_SET_CURVE, EC_R_NOT_A_SUPPORTED_NIST_PRIME);
+                goto err;
+#endif
+                }
+        else if (BN_ucmp(BN_get0_nist_prime_521(), p) == 0)
+                /* this one works in the NO_32_BIT_TYPE case */
+                group->field_mod_func = BN_nist_mod_521;
+        else
+                {
+                ECerr(EC_F_EC_GFP_NIST_GROUP_SET_CURVE, EC_R_NOT_A_NIST_PRIME);
+                goto err;
+                }
+
+        ret = ec_GFp_simple_group_set_curve(group, p, a, b, ctx);
+
+ err:
+        BN_CTX_end(ctx);
+        if (new_ctx != NULL)
+                BN_CTX_free(new_ctx);
+        return ret;
+        }
+
+
+int ec_GFp_nist_field_mul(const EC_GROUP *group, BIGNUM *r, const BIGNUM *a,
+        const BIGNUM *b, BN_CTX *ctx)
+        {
+        int     ret=0;
+        BN_CTX  *ctx_new=NULL;
+
+        if (!group || !r || !a || !b)
+                {
+                ECerr(EC_F_EC_GFP_NIST_FIELD_MUL, ERR_R_PASSED_NULL_PARAMETER);
+                goto err;
+                }
+        if (!ctx)
+                if ((ctx_new = ctx = BN_CTX_new()) == NULL) goto err;
+
+        if (!BN_mul(r, a, b, ctx)) goto err;
+        if (!group->field_mod_func(r, r, &group->field, ctx))
+                goto err;
+
+        ret=1;
+err:
+        if (ctx_new)
+                BN_CTX_free(ctx_new);
+        return ret;
+        }
+
+
+int ec_GFp_nist_field_sqr(const EC_GROUP *group, BIGNUM *r, const BIGNUM *a,
+        BN_CTX *ctx)
+        {
+        int     ret=0;
+        BN_CTX  *ctx_new=NULL;
+
+        if (!group || !r || !a)
+                {
+                ECerr(EC_F_EC_GFP_NIST_FIELD_SQR, EC_R_PASSED_NULL_PARAMETER);
+                goto err;
+                }
+        if (!ctx)
+                if ((ctx_new = ctx = BN_CTX_new()) == NULL) goto err;
+
+        if (!BN_sqr(r, a, ctx)) goto err;
+        if (!group->field_mod_func(r, r, &group->field, ctx))
+                goto err;
+
+        ret=1;
+err:
+        if (ctx_new)
+                BN_CTX_free(ctx_new);
+        return ret;
+        }