| PackageDescription | The digest package provides a function 'digest()' for the creation of hash
digests of arbitrary R objects (using the md5, sha-1, sha-256 and crc32
algorithms) permitting easy comparison of R language objects, as well as a
function 'hmac()' to create hash-based message authentication code. The
md5 algorithm by Ron Rivest is specified in RFC 1321, the sha-1 and
sha-256 algorithms are specified in FIPS-180-1 and FIPS-180-2, and the
crc32 algorithm is described in
ftp://ftp.rocksoft.com/cliens/rocksoft/papers/crc_v3.txt. . For md5,
sha-1, sha-256 and aes, this package uses a small standalone
implementations that were provided by Christophe Devine. For crc32, code
from the zlib library is used. For sha-512, an implementation by Aaron D.
Gifford is used. . Please note that this package is not meant to be
deployed for cryptographic purposes for which more comprehensive (and
widely tested) libraries such as OpenSSL should be used. |