Diff: wolfssl/wolfcrypt/curve25519.h

Revision:

13:f67a6c6013ca

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wolfssl/wolfcrypt/curve25519.h	Tue Aug 22 10:48:22 2017 +0000
@@ -0,0 +1,154 @@
+/* curve25519.h
+ *
+ * Copyright (C) 2006-2016 wolfSSL Inc.
+ *
+ * This file is part of wolfSSL.
+ *
+ * wolfSSL 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.
+ *
+ * wolfSSL 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
+ */
+
+
+#ifndef WOLF_CRYPT_CURVE25519_H
+#define WOLF_CRYPT_CURVE25519_H
+
+#include <wolfssl/wolfcrypt/types.h>
+
+#ifdef HAVE_CURVE25519
+
+#include <wolfssl/wolfcrypt/fe_operations.h>
+#include <wolfssl/wolfcrypt/random.h>
+
+#ifdef WOLFSSL_ASYNC_CRYPT
+    #include <wolfssl/wolfcrypt/async.h>
+#endif
+
+#ifdef __cplusplus
+    extern "C" {
+#endif
+
+#define CURVE25519_KEYSIZE 32
+
+/* curve25519 set type */
+typedef struct {
+    int size;       /* The size of the curve in octets */
+    const char* name;     /* name of this curve */
+} curve25519_set_type;
+
+
+/* ECC point, the internal structure is Little endian
+ * the mathematical functions used the endianess */
+typedef struct {
+    byte point[CURVE25519_KEYSIZE];
+    #ifdef FREESCALE_LTC_ECC
+        byte pointY[CURVE25519_KEYSIZE];
+    #endif
+} ECPoint;
+
+/* A CURVE25519 Key */
+typedef struct curve25519_key {
+    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 curve25519_set_type* dp;   /* domain parameters, either points to
+                                   curves (idx >= 0) or user supplied */
+    ECPoint   p;        /* public key  */
+    ECPoint   k;        /* private key */
+
+#ifdef WOLFSSL_ASYNC_CRYPT
+    WC_ASYNC_DEV asyncDev;
+#endif
+} curve25519_key;
+
+enum {
+    EC25519_LITTLE_ENDIAN=0,
+    EC25519_BIG_ENDIAN=1
+};
+
+WOLFSSL_API
+int wc_curve25519_make_key(WC_RNG* rng, int keysize, curve25519_key* key);
+
+WOLFSSL_API
+int wc_curve25519_shared_secret(curve25519_key* private_key,
+                                curve25519_key* public_key,
+                                byte* out, word32* outlen);
+
+WOLFSSL_API
+int wc_curve25519_shared_secret_ex(curve25519_key* private_key,
+                                   curve25519_key* public_key,
+                                   byte* out, word32* outlen, int endian);
+
+WOLFSSL_API
+int wc_curve25519_init(curve25519_key* key);
+
+WOLFSSL_API
+void wc_curve25519_free(curve25519_key* key);
+
+
+/* raw key helpers */
+WOLFSSL_API
+int wc_curve25519_import_private(const byte* priv, word32 privSz,
+                                 curve25519_key* key);
+WOLFSSL_API
+int wc_curve25519_import_private_ex(const byte* priv, word32 privSz,
+                                    curve25519_key* key, int endian);
+
+WOLFSSL_API
+int wc_curve25519_import_private_raw(const byte* priv, word32 privSz,
+                            const byte* pub, word32 pubSz, curve25519_key* key);
+WOLFSSL_API
+int wc_curve25519_import_private_raw_ex(const byte* priv, word32 privSz,
+                                        const byte* pub, word32 pubSz,
+                                        curve25519_key* key, int endian);
+WOLFSSL_API
+int wc_curve25519_export_private_raw(curve25519_key* key, byte* out,
+                                     word32* outLen);
+WOLFSSL_API
+int wc_curve25519_export_private_raw_ex(curve25519_key* key, byte* out,
+                                        word32* outLen, int endian);
+
+WOLFSSL_API
+int wc_curve25519_import_public(const byte* in, word32 inLen,
+                                curve25519_key* key);
+WOLFSSL_API
+int wc_curve25519_import_public_ex(const byte* in, word32 inLen,
+                                   curve25519_key* key, int endian);
+
+WOLFSSL_API
+int wc_curve25519_export_public(curve25519_key* key, byte* out, word32* outLen);
+WOLFSSL_API
+int wc_curve25519_export_public_ex(curve25519_key* key, byte* out,
+                                   word32* outLen, int endian);
+
+WOLFSSL_API
+int wc_curve25519_export_key_raw(curve25519_key* key,
+                                 byte* priv, word32 *privSz,
+                                 byte* pub, word32 *pubSz);
+WOLFSSL_API
+int wc_curve25519_export_key_raw_ex(curve25519_key* key,
+                                    byte* priv, word32 *privSz,
+                                    byte* pub, word32 *pubSz,
+                                    int endian);
+/* size helper */
+WOLFSSL_API
+int wc_curve25519_size(curve25519_key* key);
+
+#ifdef __cplusplus
+    }    /* extern "C" */
+#endif
+
+#endif /* HAVE_CURVE25519 */
+#endif /* WOLF_CRYPT_CURVE25519_H */
+
+