early-access version 1255

externals/libressl/include/openssl/chacha.h

@@ -0,0 +1,58 @@
+/* $OpenBSD: chacha.h,v 1.8 2019/01/22 00:59:21 dlg Exp $ */
+/*
+ * Copyright (c) 2014 Joel Sing <jsing@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef HEADER_CHACHA_H
+#define HEADER_CHACHA_H
+
+#include <openssl/opensslconf.h>
+
+#if defined(OPENSSL_NO_CHACHA)
+#error ChaCha is disabled.
+#endif
+
+#include <stddef.h>
+#include <stdint.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+	unsigned int input[16];
+	unsigned char ks[64];
+	unsigned char unused;
+} ChaCha_ctx;
+
+void ChaCha_set_key(ChaCha_ctx *ctx, const unsigned char *key,
+    unsigned int keybits);
+void ChaCha_set_iv(ChaCha_ctx *ctx, const unsigned char *iv,
+    const unsigned char *counter);
+void ChaCha(ChaCha_ctx *ctx, unsigned char *out, const unsigned char *in,
+    size_t len);
+
+void CRYPTO_chacha_20(unsigned char *out, const unsigned char *in, size_t len,
+    const unsigned char key[32], const unsigned char iv[8], uint64_t counter);
+void CRYPTO_xchacha_20(unsigned char *out, const unsigned char *in, size_t len,
+    const unsigned char key[32], const unsigned char iv[24]);
+void CRYPTO_hchacha_20(unsigned char out[32],
+    const unsigned char key[32], const unsigned char iv[16]);
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif /* HEADER_CHACHA_H */