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ruby--ruby/ext/digest/sha2/sha2init.c
nobu cb50168eb0 * ext/digest/md5/md5init.c (md5), ext/digest/rmd160/rmd160init.c
(rmd160) ext/digest/sha1/sha1init.c (sha1),
  ext/digest/sha2/sha2init.c (sha256, sha384, sha512): constified.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19020 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-01 07:48:53 +00:00

52 lines
1.4 KiB
C

/* $RoughId: sha2init.c,v 1.3 2001/07/13 20:00:43 knu Exp $ */
/* $Id$ */
#include "digest.h"
#include "sha2.h"
#define FOREACH_BITLEN(func) func(256) func(384) func(512)
#define DEFINE_ALGO_METADATA(bitlen) \
static const rb_digest_metadata_t sha##bitlen = { \
RUBY_DIGEST_API_VERSION, \
SHA##bitlen##_DIGEST_LENGTH, \
SHA##bitlen##_BLOCK_LENGTH, \
sizeof(SHA##bitlen##_CTX), \
(rb_digest_hash_init_func_t)SHA##bitlen##_Init, \
(rb_digest_hash_update_func_t)SHA##bitlen##_Update, \
(rb_digest_hash_finish_func_t)SHA##bitlen##_Finish, \
};
FOREACH_BITLEN(DEFINE_ALGO_METADATA)
/*
* Classes for calculating message digests using the SHA-256/384/512
* Secure Hash Algorithm(s) by NIST (the US' National Institute of
* Standards and Technology), described in FIPS PUB 180-2.
*/
void
Init_sha2()
{
VALUE mDigest, cDigest_Base;
ID id_metadata;
#define DECLARE_ALGO_CLASS(bitlen) \
VALUE cDigest_SHA##bitlen;
FOREACH_BITLEN(DECLARE_ALGO_CLASS)
rb_require("digest");
id_metadata = rb_intern("metadata");
mDigest = rb_path2class("Digest");
cDigest_Base = rb_path2class("Digest::Base");
#define DEFINE_ALGO_CLASS(bitlen) \
cDigest_SHA##bitlen = rb_define_class_under(mDigest, "SHA" #bitlen, cDigest_Base); \
\
rb_ivar_set(cDigest_SHA##bitlen, id_metadata, \
Data_Wrap_Struct(rb_cObject, 0, 0, (void *)&sha##bitlen));
FOREACH_BITLEN(DEFINE_ALGO_CLASS)
}