more ecc stuff

[avr-crypto-lib.git] / ecdsa / ecc.h

diff --git a/ecdsa/ecc.h b/ecdsa/ecc.h
new file mode 100644 (file)
index 0000000..ac7d98c
--- /dev/null
+++ b/ecdsa/ecc.h
@@ -0,0 +1,78 @@
+/* ecc.h */
+/*
+    This file is part of the AVR-Crypto-Lib.
+    Copyright (C) 2012 Daniel Otte (daniel.otte@rub.de)
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef ECC_H_
+#define ECC_H_
+
+typedef struct {
+    bigint_t x;
+    bigint_t y;
+    bigint_t z1;
+    bigint_t z2;
+    bigint_t z3;
+} ecc_chudnovsky_point_t;
+
+typedef struct {
+    bigint_t x;
+    bigint_t y;
+} ecc_affine_point_t;
+
+typedef struct __attribute__((packed)){
+    ecc_affine_point_t affine;
+    ecc_chudnovsky_point_t chudnovsky;
+} ecc_combi_point_t;
+
+typedef struct {
+    bigint_t* p;
+    bigint_t* b;
+    int (*reduce_p)(bigint_t*);
+} ecc_curve_sp_t;
+
+void ecc_chudnovsky_point_print(const ecc_chudnovsky_point_t *p);
+
+
+uint8_t ecc_affine_to_chudnovsky_point(ecc_chudnovsky_point_t *dest,
+                                       const ecc_affine_point_t *src);
+uint8_t ecc_chudnovsky_to_affine_point(ecc_affine_point_t *dest,
+                                       const ecc_chudnovsky_point_t *src,
+                                       const ecc_curve_sp_t *curve);
+uint8_t ecc_chudnovsky_point_double_sp(ecc_chudnovsky_point_t *dest,
+                                       const ecc_chudnovsky_point_t *a,
+                                       const ecc_curve_sp_t *curve);
+void ecc_chudnovsky_point_copy(ecc_chudnovsky_point_t *dest,
+                               const ecc_chudnovsky_point_t *src);
+uint8_t ecc_chudnovsky_point_add_sp(ecc_chudnovsky_point_t *dest,
+                                    const ecc_chudnovsky_point_t *a,
+                                    const ecc_chudnovsky_point_t *b,
+                                    const ecc_curve_sp_t *curve);
+uint8_t ecc_chudnovsky_double_and_add(ecc_chudnovsky_point_t *dest,
+                                      const bigint_t *k,
+                                      const ecc_chudnovsky_point_t *p,
+                                      const ecc_curve_sp_t* curve);
+uint8_t bigint_to_naf(uint8_t* dest, uint16_t *length, const bigint_t *src);
+uint8_t ecc_chudnovsky_naf_multiplication(ecc_chudnovsky_point_t *dest,
+                                          const bigint_t *k,
+                                          const ecc_chudnovsky_point_t *p,
+                                          const ecc_curve_sp_t* curve);
+uint8_t ecc_chudnovsky_multiplication(ecc_chudnovsky_point_t *dest,
+                                      const bigint_t *k,
+                                      const ecc_chudnovsky_point_t *p,
+                                      const ecc_curve_sp_t* curve);
+
+#endif /* ECC_H_ */