53 lines
1.4 KiB
C
53 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 const 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, (void *)&sha##bitlen));
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FOREACH_BITLEN(DEFINE_ALGO_CLASS)
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}
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