diff options
Diffstat (limited to 'keyexchange/isakmpd-20041012/math_ec2n.h')
| -rw-r--r-- | keyexchange/isakmpd-20041012/math_ec2n.h | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/keyexchange/isakmpd-20041012/math_ec2n.h b/keyexchange/isakmpd-20041012/math_ec2n.h new file mode 100644 index 0000000..247f84a --- /dev/null +++ b/keyexchange/isakmpd-20041012/math_ec2n.h @@ -0,0 +1,94 @@ +/* $OpenBSD: math_ec2n.h,v 1.7 2004/05/23 18:17:56 hshoexer Exp $ */ +/* $EOM: math_ec2n.h,v 1.4 1999/04/17 23:20:37 niklas Exp $ */ + +/* + * Copyright (c) 1998 Niels Provos. 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 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 AUTHOR 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 code was written under funding by Ericsson Radio Systems. + */ + +#ifndef _MATH_EC2N_H +#define _MATH_EC2N_H_ + +/* Definitions for points on an elliptic curve */ + +typedef struct { + int inf; /* Are we the point at infinity ? */ + b2n_t x, y; +} _ec2n_point; + +typedef _ec2n_point *ec2np_ptr; +typedef _ec2n_point ec2np_t[1]; + +#define EC2NP_SWAP(k,n) do \ + { \ + int _i_; \ +\ + _i_ = (k)->inf; \ + (k)->inf = (n)->inf; \ + (n)->inf = _i_; \ + B2N_SWAP ((k)->x, (n)->x); \ + B2N_SWAP ((k)->y, (n)->y); \ + } \ +while (0) + +void ec2np_init(ec2np_ptr); +void ec2np_clear(ec2np_ptr); +int ec2np_set(ec2np_ptr, ec2np_ptr); + +#define ec2np_set_x_ui(n, y) b2n_set_ui ((n)->x, y) +#define ec2np_set_y_ui(n, x) b2n_set_ui ((n)->y, x) +#define ec2np_set_x_str(n, y) b2n_set_str ((n)->x, y) +#define ec2np_set_y_str(n, x) b2n_set_str ((n)->y, x) + +/* Definitions for the group to which the points to belong to. */ + +typedef struct { + b2n_t a, b, p; +} _ec2n_group; + +typedef _ec2n_group *ec2ng_ptr; +typedef _ec2n_group ec2ng_t[1]; + +void ec2ng_init(ec2ng_ptr); +void ec2ng_clear(ec2ng_ptr); +int ec2ng_set(ec2ng_ptr, ec2ng_ptr); + +#define ec2ng_set_a_ui(n, x) b2n_set_ui ((n)->a, x) +#define ec2ng_set_b_ui(n, x) b2n_set_ui ((n)->b, x) +#define ec2ng_set_p_ui(n, x) b2n_set_ui ((n)->p, x) +#define ec2ng_set_a_str(n, x) b2n_set_str ((n)->a, x) +#define ec2ng_set_b_str(n, x) b2n_set_str ((n)->b, x) +#define ec2ng_set_p_str(n, x) b2n_set_str ((n)->p, x) + +/* Functions for computing on the elliptic group. */ + +int ec2np_add(ec2np_ptr, ec2np_ptr, ec2np_ptr, ec2ng_ptr); +int ec2np_find_y(ec2np_ptr, ec2ng_ptr); +int ec2np_ison(ec2np_ptr, ec2ng_ptr); +int ec2np_mul(ec2np_ptr, ec2np_ptr, b2n_ptr, ec2ng_ptr); +int ec2np_right(b2n_ptr n, ec2np_ptr, ec2ng_ptr); + +#endif /* _MATH_2N_H_ */ |