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/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "common_crypto.h"
#define CC_LONG_MAX ((CC_LONG)-1)
int git_hash_sha1_global_init(void)
{
return 0;
}
int git_hash_sha1_ctx_init(git_hash_sha1_ctx *ctx)
{
return git_hash_sha1_init(ctx);
}
void git_hash_sha1_ctx_cleanup(git_hash_sha1_ctx *ctx)
{
GIT_UNUSED(ctx);
}
int git_hash_sha1_init(git_hash_sha1_ctx *ctx)
{
GIT_ASSERT_ARG(ctx);
CC_SHA1_Init(&ctx->c);
return 0;
}
int git_hash_sha1_update(git_hash_sha1_ctx *ctx, const void *_data, size_t len)
{
const unsigned char *data = _data;
GIT_ASSERT_ARG(ctx);
while (len > 0) {
CC_LONG chunk = (len > CC_LONG_MAX) ? CC_LONG_MAX : (CC_LONG)len;
CC_SHA1_Update(&ctx->c, data, chunk);
data += chunk;
len -= chunk;
}
return 0;
}
int git_hash_sha1_final(git_oid *out, git_hash_sha1_ctx *ctx)
{
GIT_ASSERT_ARG(ctx);
CC_SHA1_Final(out->id, &ctx->c);
return 0;
}
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