1/* $RoughId: sha2init.c,v 1.3 2001/07/13 20:00:43 knu Exp $ */ 2/* $Id: sha2init.c 26745 2010-02-24 00:31:37Z nobu $ */ 3 4#include "digest.h" 5#if defined(SHA2_USE_OPENSSL) 6#include "sha2ossl.h" 7#else 8#include "sha2.h" 9#endif 10 11#define FOREACH_BITLEN(func) func(256) func(384) func(512) 12 13#define DEFINE_ALGO_METADATA(bitlen) \ 14static const rb_digest_metadata_t sha##bitlen = { \ 15 RUBY_DIGEST_API_VERSION, \ 16 SHA##bitlen##_DIGEST_LENGTH, \ 17 SHA##bitlen##_BLOCK_LENGTH, \ 18 sizeof(SHA##bitlen##_CTX), \ 19 (rb_digest_hash_init_func_t)SHA##bitlen##_Init, \ 20 (rb_digest_hash_update_func_t)SHA##bitlen##_Update, \ 21 (rb_digest_hash_finish_func_t)SHA##bitlen##_Finish, \ 22}; 23 24FOREACH_BITLEN(DEFINE_ALGO_METADATA) 25 26/* 27 * Classes for calculating message digests using the SHA-256/384/512 28 * Secure Hash Algorithm(s) by NIST (the US' National Institute of 29 * Standards and Technology), described in FIPS PUB 180-2. 30 */ 31void 32Init_sha2() 33{ 34 VALUE mDigest, cDigest_Base; 35 ID id_metadata; 36 37#define DECLARE_ALGO_CLASS(bitlen) \ 38 VALUE cDigest_SHA##bitlen; 39 40 FOREACH_BITLEN(DECLARE_ALGO_CLASS) 41 42 rb_require("digest"); 43 44 id_metadata = rb_intern("metadata"); 45 46 mDigest = rb_path2class("Digest"); 47 cDigest_Base = rb_path2class("Digest::Base"); 48 49#define DEFINE_ALGO_CLASS(bitlen) \ 50 cDigest_SHA##bitlen = rb_define_class_under(mDigest, "SHA" #bitlen, cDigest_Base); \ 51\ 52 rb_ivar_set(cDigest_SHA##bitlen, id_metadata, \ 53 Data_Wrap_Struct(rb_cObject, 0, 0, (void *)&sha##bitlen)); 54 55 FOREACH_BITLEN(DEFINE_ALGO_CLASS) 56} 57