.\" this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
.\" ----------------------------------------------------------------------------
.\"
-.\" $OpenBSD: mdX.3,v 1.4 1996/10/15 22:00:12 millert Exp $
+.\" $OpenBSD: mdX.3,v 1.5 1997/03/07 11:25:37 provos Exp $
.\"
.Dd October 9, 1996
.Dt MDX 3
.%A RSA Laboratories
.%T Frequently Asked Questions About today's Cryptography
.Re
+.Rs
+.%A Hans Dobbertin
+.%T Cryptanalysis of MD5 Compress
+.Re
.Sh AUTHOR
The original MDX routines were developed by
.Tn RSA
These functions appeared in
.Em FreeBSD-2.0 .
.Sh BUGS
-No method is known to exist which finds two files having the same hash value,
-nor to find a file with a specific hash value.
-There is on the other hand no guarantee that such a method doesn't exist.
+Hans Dobbertin has found a collision in the compress function of MD5 and
+recommends using SHA or RIPEMD-160 instead.
.Pp
MD2 has only been licensed for use in Privacy Enhanced Mail.
Use MD4 or MD5 if that isn't what you're doing.