NAME

libmd — Message Digest library

LIBRARY

Message Digest Library (libmd, -lmd)

SYNOPSIS

#include <md4.h>
#include <md5.h>
#include <sha1.h>
#include <sha2.h>
#include <sys/edonr.h>
#include <sys/skein.h>

DESCRIPTION

This library provides hashing routines for the following suites of hash functions:

• MD4 (RFC1320)
• MD5 (RFC1321)
• SHA1 (RFC3174)
• SHA256 (FIPS 180-2)
• SHA384 (FIPS 180-2)
• SHA512 (FIPS 180-2)
• Edon-R (Cryptographic hash function Edon-R.)
• Skein 256, 512, and 1024 (The Skein Hash Function Family.)

INTERFACES

The shared object libmd.so.1 provides the public interfaces defined below. See Intro(3) for additional information on shared object interfaces.

SECURITY

The MD4 and MD5 algorithms are currently considered weak for cryptographic use. The algorithms should be used only for compatibility with legacy systems or protocols.

The SHA1 algorithm is also believed to have some weaknesses. Migration to one of the SHA2 algorithms — including SHA256, SHA386 or SHA512 — is highly recommended when data formats and on wire protocols support the use of SHA2.

FILES

/lib/libmd.so.1

32-bit shared object

/lib/64/libmd.so.1

64-bit shared object

INTERFACE STABILITY

Committed

MT-LEVEL

MT-Safe