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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* Chunk I/O
* =========
* Copyright 2018 Eduardo Silva <eduardo@monkey.io>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* Just a simple wrapper over sha1 routines */
#include <stdio.h>
#include <string.h>
#include <chunkio/cio_sha1.h>
void cio_sha1_init(struct cio_sha1 *ctx)
{
SHA1_Init(&ctx->sha);
}
void cio_sha1_update(struct cio_sha1 *ctx, const void *data, unsigned long len)
{
SHA1_Update(&ctx->sha, data, len);
}
void cio_sha1_final(unsigned char hash[20], struct cio_sha1 *ctx)
{
SHA1_Final(hash, &ctx->sha);
}
void cio_sha1_hash(const void *data_in, unsigned long length,
unsigned char *data_out, void *state)
{
SHA_CTX sha;
SHA1_Init(&sha);
SHA1_Update(&sha, data_in, length);
/*
* If state is not NULL, make a copy of the SHA context for future
* iterations and updates.
*/
if (state != NULL) {
memcpy(state, &sha, sizeof(SHA_CTX));
}
SHA1_Final(data_out, &sha);
}
void cio_sha1_to_hex(unsigned char *in, char *out)
{
int i;
for (i = 0; i < 20; ++i) {
sprintf(&out[i*2], "%02x", in[i]);
}
out[40] = '\0';
}
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