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/*
* hash-helper.c - Helper functions for calculating hashes
*
* Copyright Jonathan McDowell <noodles@earth.li>
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "build-config.h"
#include "hash-helper.h"
#include "onak.h"
#include "openpgp.h"
onak_status_t onak_hash(struct onak_hash_data *data, uint8_t *hash)
{
struct onak_hash_ctx hash_ctx;
int i;
if (data == NULL) {
return ONAK_E_INVALID_PARAM;
}
if (data->chunks > MAX_HASH_CHUNKS) {
return ONAK_E_INVALID_PARAM;
}
switch (data->hashtype) {
case OPENPGP_HASH_MD5:
md5_init(&hash_ctx.md5);
for (i = 0; i < data->chunks; i++) {
md5_update(&hash_ctx.md5, data->len[i], data->data[i]);
}
md5_digest(&hash_ctx.md5, MD5_DIGEST_SIZE, hash);
break;
case OPENPGP_HASH_SHA1:
sha1_init(&hash_ctx.sha1);
for (i = 0; i < data->chunks; i++) {
sha1_update(&hash_ctx.sha1, data->len[i], data->data[i]);
}
sha1_digest(&hash_ctx.sha1, SHA1_DIGEST_SIZE, hash);
break;
case OPENPGP_HASH_SHA1X:
sha1x_init(&hash_ctx.sha1x);
for (i = 0; i < data->chunks; i++) {
sha1x_update(&hash_ctx.sha1x, data->len[i], data->data[i]);
}
sha1x_digest(&hash_ctx.sha1x, SHA1X_DIGEST_SIZE, hash);
break;
#ifdef HAVE_NETTLE
case OPENPGP_HASH_RIPEMD160:
ripemd160_init(&hash_ctx.ripemd160);
for (i = 0; i < data->chunks; i++) {
ripemd160_update(&hash_ctx.ripemd160, data->len[i],
data->data[i]);
}
ripemd160_digest(&hash_ctx.ripemd160, RIPEMD160_DIGEST_SIZE,
hash);
break;
case OPENPGP_HASH_SHA224:
sha224_init(&hash_ctx.sha224);
for (i = 0; i < data->chunks; i++) {
sha224_update(&hash_ctx.sha224, data->len[i],
data->data[i]);
}
sha224_digest(&hash_ctx.sha224, SHA224_DIGEST_SIZE, hash);
break;
case OPENPGP_HASH_SHA256:
sha256_init(&hash_ctx.sha256);
for (i = 0; i < data->chunks; i++) {
sha256_update(&hash_ctx.sha256, data->len[i],
data->data[i]);
}
sha256_digest(&hash_ctx.sha256, SHA256_DIGEST_SIZE, hash);
break;
case OPENPGP_HASH_SHA384:
sha384_init(&hash_ctx.sha384);
for (i = 0; i < data->chunks; i++) {
sha384_update(&hash_ctx.sha384, data->len[i],
data->data[i]);
}
sha384_digest(&hash_ctx.sha384, SHA384_DIGEST_SIZE, hash);
break;
case OPENPGP_HASH_SHA512:
sha512_init(&hash_ctx.sha512);
for (i = 0; i < data->chunks; i++) {
sha512_update(&hash_ctx.sha512, data->len[i],
data->data[i]);
}
sha512_digest(&hash_ctx.sha512, SHA512_DIGEST_SIZE, hash);
break;
#endif
default:
return ONAK_E_UNSUPPORTED_FEATURE;
}
return ONAK_E_OK;
}
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