HP-UX MD5 Secure Checksum A.01.01.02 Release Notes for HP-UX 11i v1 | HP-UX 11i v2

HP-UX MD5 Secure Checksum Release Notes

Overview

Chapter 1 7

The md5sum command provides the -n option to hash input file arguments in parallel

(refer to md5sum (1)), significantly increasing the overall command performance. This

performance improvement is based on a patented

architecture.

• Scalability and adaptability

The multithreading feature of md5sum scales with the number of CPUs and adapts to the

host system.

• Programmatic interface (libcryptx)

The new shared library containing the MD5 interfaces is called libcryptx. The md5sum

command relies on the libcryptx library for the MD5 routines. The MD5 APIs provide

methods for hashing files and finite byte streams.

• HP-UX cksum and open source md5sum compatibility

The md5sum -k option generates a 3-column output (hash, file size, and file name) that is

compatible with output from the existing HP-UX cksum command.

The default output of the md5sum command is compatible with the default output of the

open source versions of md5sum, as described in the GNU textutils package, available at:

ftp://ftp.gnu.org/gnu/textutils/

By default, the md5sum command prints an MD5 hash and a file name for each input

argument to the command. Note that the HP-UX MD5 Secure Checksum does not support

some md5sum open source options, such as the -c and -h options.