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817afbd987
- Introduce versioning in Digest::Base API, and prefix C
constants with RUBY_ and C type names with rb_ to avoid name
clash in writing extensions.
- Introduce Digest::Class and Digest::Instance for ease of
implementing subclasses and add-ons.
- Digest::Instance module requires and assumes that any instance
be resettable and clonable. An instance method #new() is
added so digest instances work just like digest classes.
- The constructor does no longer take an initial string to feed;
digest() and hexdigest() now do, instead. This allows digest
classes to take their own hashing parameters.
- Make some changes to digest() and hexdigest() class methods,
which now take extra arguments, which are passed through to
the constructor in an internal call.
- Add #digest_length/size/length() and #block_length(),
- Add the Digest::SHA2 class to wrap up SHA2 variants: SHA256,
SHA384 and SHA512, hoping this module would make a decent
example of a digest subclass written in Ruby.
- Rip BubbleBabble support out of the base class and have a
separate module named digest/bubblebabble.
- Remove RD documents in favor of newly written and embedded
RDoc documentation.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@11223 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
/* $RoughId: sha2init.c,v 1.3 2001/07/13 20:00:43 knu Exp $ */
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/* $Id$ */
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#include "digest.h"
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#include "sha2.h"
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#define FOREACH_BITLEN(func) func(256) func(384) func(512)
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#define DEFINE_ALGO_METADATA(bitlen) \
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static rb_digest_metadata_t sha##bitlen = { \
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RUBY_DIGEST_API_VERSION, \
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SHA##bitlen##_DIGEST_LENGTH, \
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SHA##bitlen##_BLOCK_LENGTH, \
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sizeof(SHA##bitlen##_CTX), \
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(rb_digest_hash_init_func_t)SHA##bitlen##_Init, \
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(rb_digest_hash_update_func_t)SHA##bitlen##_Update, \
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(rb_digest_hash_finish_func_t)SHA##bitlen##_Finish, \
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};
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FOREACH_BITLEN(DEFINE_ALGO_METADATA)
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/*
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* Classes for calculating message digests using the SHA-256/384/512
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* Secure Hash Algorithm(s) by NIST (the US' National Institute of
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* Standards and Technology), described in FIPS PUB 180-2.
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*/
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void
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Init_sha2()
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{
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VALUE mDigest, cDigest_Base;
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ID id_metadata;
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#define DECLARE_ALGO_CLASS(bitlen) \
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VALUE cDigest_SHA##bitlen;
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FOREACH_BITLEN(DECLARE_ALGO_CLASS)
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rb_require("digest");
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id_metadata = rb_intern("metadata");
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mDigest = rb_path2class("Digest");
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cDigest_Base = rb_path2class("Digest::Base");
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#define DEFINE_ALGO_CLASS(bitlen) \
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cDigest_SHA##bitlen = rb_define_class_under(mDigest, "SHA" #bitlen, cDigest_Base); \
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\
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rb_ivar_set(cDigest_SHA##bitlen, id_metadata, \
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Data_Wrap_Struct(rb_cObject, 0, 0, &sha##bitlen));
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FOREACH_BITLEN(DEFINE_ALGO_CLASS)
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}
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