diff --git a/src/include/md4.h b/src/include/md4.h
index 6af18675..3459de3d 100644
--- a/src/include/md4.h
+++ b/src/include/md4.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: md4.h,v 1.14 2004/05/03 17:30:14 millert Exp $	*/
+/*	$OpenBSD: md4.h,v 1.15 2004/06/22 01:57:30 jfb Exp $	*/
 
 /*
  * This code implements the MD4 message-digest algorithm.
@@ -40,9 +40,9 @@ void	 MD4Transform(u_int32_t [4], const u_int8_t [MD4_BLOCK_LENGTH])
 		__attribute__((__bounded__(__minbytes__,2,MD4_BLOCK_LENGTH)));
 char	*MD4End(MD4_CTX *, char *)
 		__attribute__((__bounded__(__minbytes__,2,MD4_DIGEST_STRING_LENGTH)));
-char	*MD4File(char *, char *)
+char	*MD4File(const char *, char *)
 		__attribute__((__bounded__(__minbytes__,2,MD4_DIGEST_STRING_LENGTH)));
-char	*MD4FileChunk(char *, char *, off_t, off_t)
+char	*MD4FileChunk(const char *, char *, off_t, off_t)
 		__attribute__((__bounded__(__minbytes__,2,MD4_DIGEST_STRING_LENGTH)));
 char	*MD4Data(const u_int8_t *, size_t, char *)
 		__attribute__((__bounded__(__string__,1,2)))
diff --git a/src/include/md5.h b/src/include/md5.h
index f67172db..3599640a 100644
--- a/src/include/md5.h
+++ b/src/include/md5.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: md5.h,v 1.15 2004/05/03 17:30:14 millert Exp $	*/
+/*	$OpenBSD: md5.h,v 1.16 2004/06/22 01:57:30 jfb Exp $	*/
 
 /*
  * This code implements the MD5 message-digest algorithm.
@@ -39,9 +39,9 @@ void	 MD5Transform(u_int32_t [4], const u_int8_t [MD5_BLOCK_LENGTH])
 		__attribute__((__bounded__(__minbytes__,2,MD5_BLOCK_LENGTH)));
 char	*MD5End(MD5_CTX *, char *)
 		__attribute__((__bounded__(__minbytes__,2,MD5_DIGEST_STRING_LENGTH)));
-char	*MD5File(char *, char *)
+char	*MD5File(const char *, char *)
 		__attribute__((__bounded__(__minbytes__,2,MD5_DIGEST_STRING_LENGTH)));
-char	*MD5FileChunk(char *, char *, off_t, off_t)
+char	*MD5FileChunk(const char *, char *, off_t, off_t)
 		__attribute__((__bounded__(__minbytes__,2,MD5_DIGEST_STRING_LENGTH)));
 char	*MD5Data(const u_int8_t *, size_t, char *)
 		__attribute__((__bounded__(__string__,1,2)))
diff --git a/src/include/rmd160.h b/src/include/rmd160.h
index d2e16607..185c5476 100644
--- a/src/include/rmd160.h
+++ b/src/include/rmd160.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: rmd160.h,v 1.15 2004/05/03 17:30:14 millert Exp $	*/
+/*	$OpenBSD: rmd160.h,v 1.16 2004/06/22 01:57:30 jfb Exp $	*/
 /*
  * Copyright (c) 2001 Markus Friedl.  All rights reserved.
  *
@@ -50,9 +50,9 @@ void	 RMD160Final(u_int8_t [RMD160_DIGEST_LENGTH], RMD160_CTX *)
 		__attribute__((__bounded__(__minbytes__,1,RMD160_DIGEST_LENGTH)));
 char	*RMD160End(RMD160_CTX *, char *)
 		__attribute__((__bounded__(__minbytes__,2,RMD160_DIGEST_STRING_LENGTH)));
-char	*RMD160File(char *, char *)
+char	*RMD160File(const char *, char *)
 		__attribute__((__bounded__(__minbytes__,2,RMD160_DIGEST_STRING_LENGTH)));
-char	*RMD160FileChunk(char *, char *, off_t, off_t)
+char	*RMD160FileChunk(const char *, char *, off_t, off_t)
 		__attribute__((__bounded__(__minbytes__,2,RMD160_DIGEST_STRING_LENGTH)));
 char	*RMD160Data(const u_int8_t *, size_t, char *)
 		__attribute__((__bounded__(__string__,1,2)))
diff --git a/src/include/sha1.h b/src/include/sha1.h
index cb5f6b1e..9834cf87 100644
--- a/src/include/sha1.h
+++ b/src/include/sha1.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: sha1.h,v 1.22 2004/05/05 17:09:45 millert Exp $	*/
+/*	$OpenBSD: sha1.h,v 1.23 2004/06/22 01:57:30 jfb Exp $	*/
 
 /*
  * SHA-1 in C
@@ -33,9 +33,9 @@ void SHA1Final(u_int8_t [SHA1_DIGEST_LENGTH], SHA1_CTX *)
 	__attribute__((__bounded__(__minbytes__,1,SHA1_DIGEST_LENGTH)));
 char *SHA1End(SHA1_CTX *, char *)
 	__attribute__((__bounded__(__minbytes__,2,SHA1_DIGEST_STRING_LENGTH)));
-char *SHA1File(char *, char *)
+char *SHA1File(const char *, char *)
 	__attribute__((__bounded__(__minbytes__,2,SHA1_DIGEST_STRING_LENGTH)));
-char *SHA1FileChunk(char *, char *, off_t, off_t)
+char *SHA1FileChunk(const char *, char *, off_t, off_t)
 	__attribute__((__bounded__(__minbytes__,2,SHA1_DIGEST_STRING_LENGTH)));
 char *SHA1Data(const u_int8_t *, size_t, char *)
 	__attribute__((__bounded__(__string__,1,2)))
diff --git a/src/include/sha2.h b/src/include/sha2.h
index 15b0976e..cfb28509 100644
--- a/src/include/sha2.h
+++ b/src/include/sha2.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: sha2.h,v 1.5 2004/05/05 17:39:47 millert Exp $	*/
+/*	$OpenBSD: sha2.h,v 1.6 2004/06/22 01:57:30 jfb Exp $	*/
 
 /*
  * FILE:	sha2.h
@@ -76,9 +76,9 @@ 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(char *, char *)
+char *SHA256_File(const char *, char *)
 	__attribute__((__bounded__(__minbytes__,2,SHA256_DIGEST_STRING_LENGTH)));
-char *SHA256_FileChunk(char *, char *, off_t, off_t)
+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)))
@@ -93,9 +93,9 @@ 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(char *, char *)
+char *SHA384_File(const char *, char *)
 	__attribute__((__bounded__(__minbytes__,2,SHA384_DIGEST_STRING_LENGTH)));
-char *SHA384_FileChunk(char *, char *, off_t, off_t)
+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)))
@@ -110,9 +110,9 @@ 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(char *, char *)
+char *SHA512_File(const char *, char *)
 	__attribute__((__bounded__(__minbytes__,2,SHA512_DIGEST_STRING_LENGTH)));
-char *SHA512_FileChunk(char *, char *, off_t, off_t)
+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)))
diff --git a/src/lib/libc/hash/helper.c b/src/lib/libc/hash/helper.c
index 5735e851..016a31ec 100644
--- a/src/lib/libc/hash/helper.c
+++ b/src/lib/libc/hash/helper.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: helper.c,v 1.5 2004/05/03 17:30:14 millert Exp $	*/
+/*	$OpenBSD: helper.c,v 1.6 2004/06/22 01:57:29 jfb Exp $	*/
 
 /*
  * ----------------------------------------------------------------------------
@@ -10,7 +10,7 @@
  */
 
 #if defined(LIBC_SCCS) && !defined(lint)
-static const char rcsid[] = "$OpenBSD: helper.c,v 1.5 2004/05/03 17:30:14 millert Exp $";
+static const char rcsid[] = "$OpenBSD: helper.c,v 1.6 2004/06/22 01:57:29 jfb Exp $";
 #endif /* LIBC_SCCS and not lint */
 
 #include <sys/param.h>
@@ -46,7 +46,7 @@ HASHEnd(HASH_CTX *ctx, char *buf)
 }
 
 char *
-HASHFileChunk(char *filename, char *buf, off_t off, off_t len)
+HASHFileChunk(const char *filename, char *buf, off_t off, off_t len)
 {
 	u_char buffer[BUFSIZ];
 	HASH_CTX ctx;
@@ -73,7 +73,7 @@ HASHFileChunk(char *filename, char *buf, off_t off, off_t len)
 }
 
 char *
-HASHFile(char *filename, char *buf)
+HASHFile(const char *filename, char *buf)
 {
 	return (HASHFileChunk(filename, buf, (off_t)0, (off_t)0));
 }
diff --git a/src/lib/libc/hash/mdX.3 b/src/lib/libc/hash/mdX.3
index 2a9c9996..d43aeeb6 100644
--- a/src/lib/libc/hash/mdX.3
+++ b/src/lib/libc/hash/mdX.3
@@ -6,7 +6,7 @@
 .\" this stuff is worth it, you can buy me a beer in return.   Poul-Henning Kamp
 .\" ----------------------------------------------------------------------------
 .\"
-.\" 	$OpenBSD: mdX.3,v 1.6 2004/05/16 18:29:09 otto Exp $
+.\" 	$OpenBSD: mdX.3,v 1.7 2004/06/22 01:57:29 jfb Exp $
 .\"
 .Dd April 29, 2004
 .Dt MDX 3
@@ -38,9 +38,9 @@
 .Ft "char *"
 .Fn MDXEnd "MDX_CTX *context" "char *buf"
 .Ft "char *"
-.Fn MDXFile "char *filename" "char *buf"
+.Fn MDXFile "const char *filename" "char *buf"
 .Ft "char *"
-.Fn MDXFileChunk "char *filename" "char *buf" "off_t offset" "off_t length"
+.Fn MDXFileChunk "const char *filename" "char *buf" "off_t offset" "off_t length"
 .Ft "char *"
 .Fn MDXData "const u_int8_t *data" "size_t len" "char *buf"
 .Sh DESCRIPTION
diff --git a/src/lib/libc/hash/rmd160.3 b/src/lib/libc/hash/rmd160.3
index 112c68a1..fad7ba6f 100644
--- a/src/lib/libc/hash/rmd160.3
+++ b/src/lib/libc/hash/rmd160.3
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: rmd160.3,v 1.25 2004/05/16 18:29:09 otto Exp $
+.\"	$OpenBSD: rmd160.3,v 1.26 2004/06/22 01:57:29 jfb Exp $
 .\"
 .\" Copyright (c) 1997, 2004 Todd C. Miller <Todd.Miller@courtesan.com>
 .\"
@@ -47,9 +47,9 @@
 .Ft "char *"
 .Fn RMD160End "RMD160_CTX *context" "char *buf"
 .Ft "char *"
-.Fn RMD160File "char *filename" "char *buf"
+.Fn RMD160File "const char *filename" "char *buf"
 .Ft "char *"
-.Fn RMD160FileChunk "char *filename" "char *buf" "off_t offset" "off_t length"
+.Fn RMD160FileChunk "const char *filename" "char *buf" "off_t offset" "off_t length"
 .Ft "char *"
 .Fn RMD160Data "const u_int8_t *data" "size_t len" "char *buf"
 .Sh DESCRIPTION
diff --git a/src/lib/libc/hash/sha1.3 b/src/lib/libc/hash/sha1.3
index d4ddb42c..ea7d5479 100644
--- a/src/lib/libc/hash/sha1.3
+++ b/src/lib/libc/hash/sha1.3
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: sha1.3,v 1.33 2004/05/16 18:29:09 otto Exp $
+.\"	$OpenBSD: sha1.3,v 1.34 2004/06/22 01:57:29 jfb Exp $
 .\"
 .\" Copyright (c) 1997, 2004 Todd C. Miller <Todd.Miller@courtesan.com>
 .\"
@@ -47,9 +47,9 @@
 .Ft "char *"
 .Fn SHA1End "SHA1_CTX *context" "char *buf"
 .Ft "char *"
-.Fn SHA1File "char *filename" "char *buf"
+.Fn SHA1File "const char *filename" "char *buf"
 .Ft "char *"
-.Fn SHA1FileChunk "char *filename" "char *buf" "off_t offset" "off_t length"
+.Fn SHA1FileChunk "const char *filename" "char *buf" "off_t offset" "off_t length"
 .Ft "char *"
 .Fn SHA1Data "const u_int8_t *data" "size_t len" "char *buf"
 .Sh DESCRIPTION
diff --git a/src/lib/libc/hash/sha2.3 b/src/lib/libc/hash/sha2.3
index 3cf2400d..77c8abb5 100644
--- a/src/lib/libc/hash/sha2.3
+++ b/src/lib/libc/hash/sha2.3
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: sha2.3,v 1.10 2004/05/16 18:29:09 otto Exp $
+.\"	$OpenBSD: sha2.3,v 1.11 2004/06/22 01:57:29 jfb Exp $
 .\"
 .\" Copyright (c) 2003, 2004 Todd C. Miller <Todd.Miller@courtesan.com>
 .\"
@@ -50,9 +50,9 @@
 .Ft "char *"
 .Fn SHA256_End "SHA256_CTX *context" "char *buf"
 .Ft "char *"
-.Fn SHA256_File "char *filename" "char *buf"
+.Fn SHA256_File "const char *filename" "char *buf"
 .Ft "char *"
-.Fn SHA256_FileChunk "char *filename" "char *buf" "off_t offset" "off_t length"
+.Fn SHA256_FileChunk "const char *filename" "char *buf" "off_t offset" "off_t length"
 .Ft "char *"
 .Fn SHA256_Data "u_int8_t *data" "size_t len" "char *buf"
 .Ft void