Diff: cyassl/ctaocrypt/ecc.h

Revision:

0:714293de3836

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cyassl/ctaocrypt/ecc.h	Thu Sep 05 10:33:04 2013 +0000
@@ -0,0 +1,129 @@
+/* ecc.h
+ *
+ * Copyright (C) 2006-2013 wolfSSL Inc.
+ *
+ * This file is part of CyaSSL.
+ *
+ * CyaSSL 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * CyaSSL 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+
+#ifdef HAVE_ECC
+
+#ifndef CTAO_CRYPT_ECC_H
+#define CTAO_CRYPT_ECC_H
+
+#include <cyassl/ctaocrypt/types.h>
+#include <cyassl/ctaocrypt/integer.h>
+#include <cyassl/ctaocrypt/random.h>
+
+#ifdef __cplusplus
+    extern "C" {
+#endif
+
+
+enum {
+    ECC_PUBLICKEY  = 1,
+    ECC_PRIVATEKEY = 2,
+    ECC_MAXNAME    = 16,     /* MAX CURVE NAME LENGTH */
+    SIG_HEADER_SZ  =  6,     /* ECC signature header size */
+    ECC_BUFSIZE    = 256,    /* for exported keys temp buffer */
+    ECC_MINSIZE    = 20,     /* MIN Private Key size */
+    ECC_MAXSIZE    = 66      /* MAX Private Key size */
+};
+
+
+/* ECC set type defined a NIST GF(p) curve */
+typedef struct {
+    int size;       /* The size of the curve in octets */
+    const char* name;     /* name of this curve */
+    const char* prime;    /* prime that defines the field, curve is in (hex) */
+    const char* B;        /* fields B param (hex) */
+    const char* order;    /* order of the curve (hex) */
+    const char* Gx;       /* x coordinate of the base point on curve (hex) */
+    const char* Gy;       /* y coordinate of the base point on curve (hex) */
+} ecc_set_type;
+
+
+/* A point on an ECC curve, stored in Jacbobian format such that (x,y,z) =>
+   (x/z^2, y/z^3, 1) when interpreted as affine */
+typedef struct {
+    mp_int x;        /* The x coordinate */
+    mp_int y;        /* The y coordinate */
+    mp_int z;        /* The z coordinate */
+} ecc_point;
+
+
+/* An ECC Key */
+typedef struct {
+    int type;           /* Public or Private */
+    int idx;            /* Index into the ecc_sets[] for the parameters of
+                           this curve if -1, this key is using user supplied
+                           curve in dp */
+    const ecc_set_type* dp;     /* domain parameters, either points to NIST
+                                   curves (idx >= 0) or user supplied */
+    ecc_point pubkey;   /* public key */  
+    mp_int    k;        /* private key */
+} ecc_key;
+
+
+/* ECC predefined curve sets  */
+extern const ecc_set_type ecc_sets[];
+
+
+CYASSL_API
+int ecc_make_key(RNG* rng, int keysize, ecc_key* key);
+CYASSL_API
+int ecc_shared_secret(ecc_key* private_key, ecc_key* public_key, byte* out,
+                      word32* outlen);
+CYASSL_API
+int ecc_sign_hash(const byte* in, word32 inlen, byte* out, word32 *outlen, 
+                  RNG* rng, ecc_key* key);
+CYASSL_API
+int ecc_verify_hash(const byte* sig, word32 siglen, byte* hash, word32 hashlen, 
+                    int* stat, ecc_key* key);
+CYASSL_API
+void ecc_init(ecc_key* key);
+CYASSL_API
+void ecc_free(ecc_key* key);
+
+
+/* ASN key helpers */
+CYASSL_API
+int ecc_export_x963(ecc_key*, byte* out, word32* outLen);
+CYASSL_API
+int ecc_import_x963(const byte* in, word32 inLen, ecc_key* key);
+CYASSL_API
+int ecc_import_private_key(const byte* priv, word32 privSz, const byte* pub,
+                           word32 pubSz, ecc_key* key);
+
+/* size helper */
+CYASSL_API
+int ecc_size(ecc_key* key);
+CYASSL_API
+int ecc_sig_size(ecc_key* key);
+
+/* TODO: fix mutex types */
+#define MUTEX_GLOBAL(x) int (x);
+#define MUTEX_LOCK(x)
+#define MUTEX_UNLOCK(x)
+
+
+
+#ifdef __cplusplus
+    }    /* extern "C" */    
+#endif
+
+#endif /* CTAO_CRYPT_ECC_H */
+#endif /* HAVE_ECC */