Create cryptographic hash digests of R objects
Description
The digest package provides functions 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. 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 and sha-256, this packages uses small standalone
C implementations that were provided by Christophe Devine. For
crc32, code from the zlib library 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.