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* Optional switch "--with-openssl=<PATH>" to use OpenSSL's

Browse source 
implementations of MD5, SHA-1 and SHA-256.  The main benefit is that
  we get assembler-optimised implementations of MD5 and SHA-1 (though
  not SHA-256 (at least on x86), unfortunately).  OpenSSL's SHA-1
  implementation on Intel is twice as fast as ours.
This commit is contained in:
Eelco Dolstra 2006-02-13 19:52:43 +00:00
parent e8475bbd5b
commit d6f586d0ea
7 changed files with 59 additions and 40 deletions
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26
src/libutil/hash.cc
View file

@ -1,10 +1,17 @@
#include "config.h"
#include <iostream>
#ifdef HAVE_OPENSSL
#include <openssl/md5.h>
#include <openssl/sha.h>
#else
extern "C" {
#include "md5.h"
#include "sha1.h"
#include "sha256.h"
}
#endif
#include "hash.hh"
#include "archive.hh"
@ -199,16 +206,16 @@ bool isHash(const string & s)
union Ctx
{
md5_ctx md5;
sha_ctx sha1;
MD5_CTX md5;
SHA_CTX sha1;
SHA256_CTX sha256;
};
static void start(HashType ht, Ctx & ctx)
{
if (ht == htMD5) md5_init_ctx(&ctx.md5);
else if (ht == htSHA1) sha_init(&ctx.sha1);
if (ht == htMD5) MD5_Init(&ctx.md5);
else if (ht == htSHA1) SHA1_Init(&ctx.sha1);
else if (ht == htSHA256) SHA256_Init(&ctx.sha256);
}
@ -216,19 +223,16 @@ static void start(HashType ht, Ctx & ctx)
static void update(HashType ht, Ctx & ctx,
const unsigned char * bytes, unsigned int len)
{
if (ht == htMD5) md5_process_bytes(bytes, len, &ctx.md5);
else if (ht == htSHA1) sha_update(&ctx.sha1, bytes, len);
if (ht == htMD5) MD5_Update(&ctx.md5, bytes, len);
else if (ht == htSHA1) SHA1_Update(&ctx.sha1, bytes, len);
else if (ht == htSHA256) SHA256_Update(&ctx.sha256, bytes, len);
}
static void finish(HashType ht, Ctx & ctx, unsigned char * hash)
{
if (ht == htMD5) md5_finish_ctx(&ctx.md5, hash);
else if (ht == htSHA1) {
sha_final(&ctx.sha1);
sha_digest(&ctx.sha1, hash);
}
if (ht == htMD5) MD5_Final(hash, &ctx.md5);
else if (ht == htSHA1) SHA1_Final(hash, &ctx.sha1);
else if (ht == htSHA256) SHA256_Final(hash, &ctx.sha256);
}