md5, sha1, sha256, sha512: use openssl routines if available

[gnulib.git] / lib / md5.h

diff --git a/lib/md5.h b/lib/md5.h
index c737040..1ad82c2 100644 (file)
--- a/lib/md5.h
+++ b/lib/md5.h
@@ -1,7 +1,7 @@
 /* Declaration of functions and data types used for MD5 sum computing
    library functions.
-   Copyright (C) 1995-1997,1999,2000,2001,2004,2005,2006
-      Free Software Foundation, Inc.
+   Copyright (C) 1995-1997, 1999-2001, 2004-2006, 2008-2013 Free Software
+   Foundation, Inc.
    This file is part of the GNU C Library.
 
    This program is free software; you can redistribute it and/or modify it
@@ -15,8 +15,7 @@
    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 02110-1301, USA.  */
+   along with this program; if not, see <http://www.gnu.org/licenses/>.  */
 
 #ifndef _MD5_H
 #define _MD5_H 1
@@ -24,12 +23,16 @@
 #include <stdio.h>
 #include <stdint.h>
 
+# if HAVE_OPENSSL_MD5
+#  include <openssl/md5.h>
+# endif
+
 #define MD5_DIGEST_SIZE 16
 #define MD5_BLOCK_SIZE 64
 
 #ifndef __GNUC_PREREQ
 # if defined __GNUC__ && defined __GNUC_MINOR__
-#  define __GNUC_PREREQ(maj, min)                                      \
+#  define __GNUC_PREREQ(maj, min)                                       \
   ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
 # else
 #  define __GNUC_PREREQ(maj, min) 0
@@ -38,7 +41,7 @@
 
 #ifndef __THROW
 # if defined __cplusplus && __GNUC_PREREQ (2,8)
-#  define __THROW      throw ()
+#  define __THROW       throw ()
 # else
 #  define __THROW
 # endif
@@ -54,6 +57,14 @@
 # define __md5_stream md5_stream
 #endif
 
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+# if HAVE_OPENSSL_MD5
+#  define GL_OPENSSL_NAME 5
+#  include "gl_openssl.h"
+# else
 /* Structure to save state of computation between the single steps.  */
 struct md5_ctx
 {
@@ -69,7 +80,7 @@ struct md5_ctx
 
 /*
  * The following three functions are build up the low level used in
- * the functions `md5_stream' and `md5_buffer'.
+ * the functions 'md5_stream' and 'md5_buffer'.
  */
 
 /* Initialize structure containing state of computation.
@@ -81,44 +92,44 @@ extern void __md5_init_ctx (struct md5_ctx *ctx) __THROW;
    starting at BUFFER.
    It is necessary that LEN is a multiple of 64!!! */
 extern void __md5_process_block (const void *buffer, size_t len,
-                                struct md5_ctx *ctx) __THROW;
+                                 struct md5_ctx *ctx) __THROW;
 
 /* Starting with the result of former calls of this function (or the
    initialization function update the context for the next LEN bytes
    starting at BUFFER.
    It is NOT required that LEN is a multiple of 64.  */
 extern void __md5_process_bytes (const void *buffer, size_t len,
-                                struct md5_ctx *ctx) __THROW;
+                                 struct md5_ctx *ctx) __THROW;
 
 /* Process the remaining bytes in the buffer and put result from CTX
    in first 16 bytes following RESBUF.  The result is always in little
    endian byte order, so that a byte-wise output yields to the wanted
-   ASCII representation of the message digest.
-
-   IMPORTANT: On some systems, RESBUF must be aligned to a 32-bit
-   boundary. */
+   ASCII representation of the message digest.  */
 extern void *__md5_finish_ctx (struct md5_ctx *ctx, void *resbuf) __THROW;
 
 
 /* Put result from CTX in first 16 bytes following RESBUF.  The result is
    always in little endian byte order, so that a byte-wise output yields
-   to the wanted ASCII representation of the message digest.
-
-   IMPORTANT: On some systems, RESBUF must be aligned to a 32-bit
-   boundary. */
+   to the wanted ASCII representation of the message digest.  */
 extern void *__md5_read_ctx (const struct md5_ctx *ctx, void *resbuf) __THROW;
 
 
-/* Compute MD5 message digest for bytes read from STREAM.  The
-   resulting message digest number will be written into the 16 bytes
-   beginning at RESBLOCK.  */
-extern int __md5_stream (FILE *stream, void *resblock) __THROW;
-
 /* Compute MD5 message digest for LEN bytes beginning at BUFFER.  The
    result is always in little endian byte order, so that a byte-wise
    output yields to the wanted ASCII representation of the message
    digest.  */
 extern void *__md5_buffer (const char *buffer, size_t len,
-                          void *resblock) __THROW;
+                           void *resblock) __THROW;
+
+# endif
+/* Compute MD5 message digest for bytes read from STREAM.  The
+   resulting message digest number will be written into the 16 bytes
+   beginning at RESBLOCK.  */
+extern int __md5_stream (FILE *stream, void *resblock) __THROW;
+
+
+# ifdef __cplusplus
+}
+# endif
 
 #endif /* md5.h */