Init commit of gmssl-v3

2026-05-06 16:36:16 +08:00 · 2021-07-13 19:21:43 +08:00
commit 0af5775be3
157 changed files with 60619 additions and 0 deletions
--- a/include/gmssl/chacha20.h
+++ b/include/gmssl/chacha20.h
@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 2014 - 2021 The GmSSL Project.  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.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the GmSSL Project.
+ *    (http://gmssl.org/)"
+ *
+ * 4. The name "GmSSL Project" must not be used to endorse or promote
+ *    products derived from this software without prior written
+ *    permission. For written permission, please contact
+ *    guanzhi1980@gmail.com.
+ *
+ * 5. Products derived from this software may not be called "GmSSL"
+ *    nor may "GmSSL" appear in their names without prior written
+ *    permission of the GmSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the GmSSL Project
+ *    (http://gmssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE GmSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED 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 GmSSL PROJECT OR
+ * ITS CONTRIBUTORS 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.
+ */
+
+/* RFC 8439 "ChaCha20 and Poly1305 for IETF Protocols" */
+
+#ifndef GMSSL_CHACHA20_H
+#define GMSSL_CHACHA20_H
+
+#define CHACHA20_IS_BIG_ENDIAN	0
+
+#include <stdint.h>
+#include <stdlib.h>
+
+#include <string.h>
+
+#define CHACHA20_KEY_BITS	256
+#define CHACHA20_NONCE_BITS	96
+#define CHACHA20_COUNTER_BITS	32
+
+#define CHACHA20_KEY_SIZE	(CHACHA20_KEY_BITS/8)
+#define CHACHA20_NONCE_SIZE	(CHACHA20_NONCE_BITS/8)
+#define CHACHA20_COUNTER_SIZE	(CHACHA20_COUNTER_BITS/8)
+
+#define CHACHA20_KEY_WORDS	(CHACHA20_KEY_SIZE/sizeof(uint32_t))
+#define CHACHA20_NONCE_WORDS	(CHACHA20_NONCE_SIZE/sizeof(uint32_t))
+#define CHACHA20_COUNTER_WORDS	(CHACHA20_COUNTER_SIZE/sizeof(uint32_t))
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+typedef struct {
+	uint32_t d[16];
+} CHACHA20_STATE;
+
+
+void chacha20_set_key(CHACHA20_STATE *state,
+	const uint8_t key[CHACHA20_KEY_SIZE],
+	const uint8_t nonce[CHACHA20_NONCE_SIZE],
+	uint32_t counter);
+
+void chacha20_generate_keystream(CHACHA20_STATE *state,
+	unsigned int counts,
+	uint8_t *out);
+
+
+#ifdef __cplusplus
+}
+#endif
+#endif