Crypt::RIPEMD160::MAC(3p)

NAME
Crypt::RIPEMD160::MAC - Perl extension for RIPEMD-160 MAC function

SYNOPSIS
    use Crypt::RIPEMD160::MAC;

    $key = "This is the secret key";

    $mac = Crypt::RIPEMD160::MAC->new($key);

    $mac->reset();

    $mac->add(LIST);
    $mac->addfile(HANDLE);

    $digest = $mac->mac();
    $string = $mac->hexmac();

DESCRIPTION
The Crypt::RIPEMD160::MAC module implements HMAC-RIPEMD-160 message authentication codes as described in RFC 2104. It uses Crypt::RIPEMD160 as the underlying hash function.

A new MAC context is created with new, passing the secret key as argument. Data is fed into the context with add (which accepts a list of strings) or addfile (which reads from a file handle). The final MAC value is returned by mac as a 20-byte binary string, or by hexmac as a human-readable hex string.

Note that both mac and hexmac are destructive operations that clear the key material. To compute another MAC, create a new context or call reset.

EXAMPLES
    use Crypt::RIPEMD160::MAC;

    $mac = Crypt::RIPEMD160::MAC->new("secret key");
    $mac->add("some data");
    $digest = $mac->mac();

    print("MAC is " . unpack("H*", $digest) . "\n");

AUTHOR
The RIPEMD-160 interface was written by Christian H. Geuer ("christian.geuer@crypto.gun.de").

SEE ALSO
MD5(3pm) and SHA(1).