fixing E-Mail-Address & Copyright

[avr-crypto-lib.git] / ecdsa / ecdsa_sign.c

diff --git a/ecdsa/ecdsa_sign.c b/ecdsa/ecdsa_sign.c
index a13a0ca6a0e47271ffcdfeaec6c2765e154123ed..217da031ce27dcdc7ea465a585fb3bf2e695ae9d 100644 (file)
--- a/ecdsa/ecdsa_sign.c
+++ b/ecdsa/ecdsa_sign.c
@@ -1,7 +1,7 @@
 /* ecdsa.c */
 /*
     This file is part of the AVR-Crypto-Lib.
-    Copyright (C) 2006-2012 Daniel Otte (daniel.otte@rub.de)
+    Copyright (C) 2006-2015 Daniel Otte (bg@nerilex.org)
 
     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
@@ -76,28 +76,14 @@ uint8_t ecdsa_sign_bigint(ecdsa_signature_t *s, const bigint_t *m,
         return 2;
     }
     ecc_chudnovsky_to_affine_point(&q.affine, &q.chudnovsky, ctx->curve);
-    bigint_inverse(&s->s, k, ctx->curve->p);
+    bigint_inverse(&s->s, k, ctx->curve->n);
+
     bigint_mul_u(&t, &q.affine.x, ctx->priv);
-    ctx->curve->reduce_p(&t);
-    printf_P(PSTR("msg:   "));
-    bigint_print_hex(m);
-    putchar('\n');
-    printf_P(PSTR("k:     "));
-    bigint_print_hex(k);
-    putchar('\n');
-    printf_P(PSTR("k-inv: "));
-    bigint_print_hex(&s->s);
-    putchar('\n');
-    printf_P(PSTR("t (1): "));
-    bigint_print_hex(&t);
-    putchar('\n');
+    bigint_reduce(&t, ctx->curve->n);
     bigint_add_u(&t, &t, m);
-    ctx->curve->reduce_p(&t);
-    printf_P(PSTR("t (2): "));
-    bigint_print_hex(&t);
-    putchar('\n');
+    bigint_reduce(&t, ctx->curve->n);
     bigint_mul_u(&t, &t, &s->s);
-    ctx->curve->reduce_p(&t);
+    bigint_reduce(&t, ctx->curve->n);
     if(t.length_W == 0){
         printf_P(PSTR("DBG: XXX <%S %s %d>\n"), PSTR(__FILE__), __func__, __LINE__);
         return 2;