- (djm) [configure.ac defines.h kex.c md-sha256.c]

   [openbsd-compat/sha2.h openbsd-compat/openbsd-compat.h]
   [openbsd-compat/sha2.c] First stab at portability glue for SHA256
   KEX support, should work with libc SHA256 support or OpenSSL
   EVP_sha256 if present

1 files changed, 125 insertions, 0 deletions

diff --git a/openbsd-compat/sha2.h b/openbsd-compat/sha2.h
new file mode 100644
index 000000000..fb40bde43
--- /dev/null
+++ b/openbsd-compat/sha2.h
@@ -0,0 +1,125 @@
+/*      $OpenBSD: sha2.h,v 1.6 2004/06/22 01:57:30 jfb Exp $    */
+
+/*
+ * FILE:        sha2.h
+ * AUTHOR:      Aaron D. Gifford <me@aarongifford.com>
+ * 
+ * Copyright (c) 2000-2001, Aaron D. Gifford
+ * 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. Neither the name of the copyright holder nor the names of contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTOR(S) ``AS IS'' AND
+ * ANY EXPRESS 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 AUTHOR OR CONTRIBUTOR(S) 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.
+ *
+ * $From: sha2.h,v 1.1 2001/11/08 00:02:01 adg Exp adg $
+ */
+
+/* OPENBSD ORIGINAL: include/sha2.h */
+
+#ifndef _SHA2_H
+#define _SHA2_H
+
+#include "includes.h"
+
+#if !defined(HAVE_SHA256_UPDATE) && !defined(HAVE_EVP_SHA256)
+
+/*** SHA-256/384/512 Various Length Definitions ***********************/
+#define SHA256_BLOCK_LENGTH             64
+#define SHA256_DIGEST_LENGTH            32
+#define SHA256_DIGEST_STRING_LENGTH     (SHA256_DIGEST_LENGTH * 2 + 1)
+#define SHA384_BLOCK_LENGTH             128
+#define SHA384_DIGEST_LENGTH            48
+#define SHA384_DIGEST_STRING_LENGTH     (SHA384_DIGEST_LENGTH * 2 + 1)
+#define SHA512_BLOCK_LENGTH             128
+#define SHA512_DIGEST_LENGTH            64
+#define SHA512_DIGEST_STRING_LENGTH     (SHA512_DIGEST_LENGTH * 2 + 1)
+
+
+/*** SHA-256/384/512 Context Structures *******************************/
+typedef struct _SHA256_CTX {
+        u_int32_t       state[8];
+        u_int64_t       bitcount;
+        u_int8_t        buffer[SHA256_BLOCK_LENGTH];
+} SHA256_CTX;
+typedef struct _SHA512_CTX {
+        u_int64_t       state[8];
+        u_int64_t       bitcount[2];
+        u_int8_t        buffer[SHA512_BLOCK_LENGTH];
+} SHA512_CTX;
+
+typedef SHA512_CTX SHA384_CTX;
+
+void SHA256_Init(SHA256_CTX *);
+void SHA256_Transform(u_int32_t state[8], const u_int8_t [SHA256_BLOCK_LENGTH]);
+void SHA256_Update(SHA256_CTX *, const u_int8_t *, size_t)
+        __attribute__((__bounded__(__string__,2,3)));
+void SHA256_Pad(SHA256_CTX *);
+void SHA256_Final(u_int8_t [SHA256_DIGEST_LENGTH], SHA256_CTX *)
+        __attribute__((__bounded__(__minbytes__,1,SHA256_DIGEST_LENGTH)));
+char *SHA256_End(SHA256_CTX *, char *)
+        __attribute__((__bounded__(__minbytes__,2,SHA256_DIGEST_STRING_LENGTH)));
+char *SHA256_File(const char *, char *)
+        __attribute__((__bounded__(__minbytes__,2,SHA256_DIGEST_STRING_LENGTH)));
+char *SHA256_FileChunk(const char *, char *, off_t, off_t)
+        __attribute__((__bounded__(__minbytes__,2,SHA256_DIGEST_STRING_LENGTH)));
+char *SHA256_Data(const u_int8_t *, size_t, char *)
+        __attribute__((__bounded__(__string__,1,2)))
+        __attribute__((__bounded__(__minbytes__,3,SHA256_DIGEST_STRING_LENGTH)));
+
+void SHA384_Init(SHA384_CTX *);
+void SHA384_Transform(u_int64_t state[8], const u_int8_t [SHA384_BLOCK_LENGTH]);
+void SHA384_Update(SHA384_CTX *, const u_int8_t *, size_t)
+        __attribute__((__bounded__(__string__,2,3)));
+void SHA384_Pad(SHA384_CTX *);
+void SHA384_Final(u_int8_t [SHA384_DIGEST_LENGTH], SHA384_CTX *)
+        __attribute__((__bounded__(__minbytes__,1,SHA384_DIGEST_LENGTH)));
+char *SHA384_End(SHA384_CTX *, char *)
+        __attribute__((__bounded__(__minbytes__,2,SHA384_DIGEST_STRING_LENGTH)));
+char *SHA384_File(const char *, char *)
+        __attribute__((__bounded__(__minbytes__,2,SHA384_DIGEST_STRING_LENGTH)));
+char *SHA384_FileChunk(const char *, char *, off_t, off_t)
+        __attribute__((__bounded__(__minbytes__,2,SHA384_DIGEST_STRING_LENGTH)));
+char *SHA384_Data(const u_int8_t *, size_t, char *)
+        __attribute__((__bounded__(__string__,1,2)))
+        __attribute__((__bounded__(__minbytes__,3,SHA384_DIGEST_STRING_LENGTH)));
+
+void SHA512_Init(SHA512_CTX *);
+void SHA512_Transform(u_int64_t state[8], const u_int8_t [SHA512_BLOCK_LENGTH]);
+void SHA512_Update(SHA512_CTX *, const u_int8_t *, size_t)
+        __attribute__((__bounded__(__string__,2,3)));
+void SHA512_Pad(SHA512_CTX *);
+void SHA512_Final(u_int8_t [SHA512_DIGEST_LENGTH], SHA512_CTX *)
+        __attribute__((__bounded__(__minbytes__,1,SHA512_DIGEST_LENGTH)));
+char *SHA512_End(SHA512_CTX *, char *)
+        __attribute__((__bounded__(__minbytes__,2,SHA512_DIGEST_STRING_LENGTH)));
+char *SHA512_File(const char *, char *)
+        __attribute__((__bounded__(__minbytes__,2,SHA512_DIGEST_STRING_LENGTH)));
+char *SHA512_FileChunk(const char *, char *, off_t, off_t)
+        __attribute__((__bounded__(__minbytes__,2,SHA512_DIGEST_STRING_LENGTH)));
+char *SHA512_Data(const u_int8_t *, size_t, char *)
+        __attribute__((__bounded__(__string__,1,2)))
+        __attribute__((__bounded__(__minbytes__,3,SHA512_DIGEST_STRING_LENGTH)));
+
+#endif /* !defined(HAVE_SHA256_UPDATE) && !defined(HAVE_EVP_SHA256) */
+
+#endif /* _SHA2_H */