Add ChaCha to libcrypto, based on djb's public domain implementation.

ok deraadt@

1 files changed, 39 insertions, 0 deletions

diff --git a/src/lib/libcrypto/chacha/chacha.h b/src/lib/libcrypto/chacha/chacha.h
new file mode 100644
index 0000000000..d66a719ae4
--- /dev/null
+++ b/src/lib/libcrypto/chacha/chacha.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 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>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+void CRYPTO_chacha_20(unsigned char *out, const unsigned char *in, size_t len,
+    const unsigned char key[32], const unsigned char iv[8], size_t counter);
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif /* HEADER_CHACHA_H */