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libmd(3LIB)

Name | Synopsis | Description | INTERFACES | Security | Files | Attributes

Name

libmd– Message Digest library

Synopsis

cc [ flag... ] file... -lmd [ library... ]
#include <md4.h>
#include <md5.h>
#include <sha1.h>
#include <sha2.h>

Description

Functions in this library provide hashing routines for MD4 (RFC1320), MD5 (RFC1321), SHA1 (RFC3174), SHA256 (FIPS 180-2), SHA384 (FIPS 180-2), SHA512 (FIPS 180-2).

INTERFACES

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

MD4Final	MD4Init
MD4Update	md5_calc
MD5Final	MD5Init
MD5Update	SHA1Final
SHA1Init	SHA1Update
SHA2Final	SHA2Init
SHA2Update

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 compatibility with data formats and on wire protocols is permitted.

Files

/lib/libmd.so.1

shared object

/lib/64/libmd.so.1

64-bit shared object

Attributes

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE	ATTRIBUTE VALUE
Interface Stability	Committed
MT-Level	MT-Safe

Name | Synopsis | Description | INTERFACES | Security | Files | Attributes