82e7917294
* Added authors and licenses and plugin access to crypto related files * removed `rz_hash` and related files * introduced `rz_msg_digest_*` with plugins * updated all old methods with newer ones. * added HMAC support to `rz-hash` (moved key option under `-K`) * removed wrong algorithms on `woD`/`woE` * fixed parity digest size * fixed the behaviour on all hash functions * added unit test for hash * optimized code for HMAC key calculation * removed hash legacy tests
29 lines
777 B
C
29 lines
777 B
C
// SPDX-FileCopyrightText: 2021 deroad <wargio@libero.it>
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// SPDX-License-Identifier: LGPL-3.0-only
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#include "parity.h"
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#include <rz_util.h>
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bool rz_parity_init(RzParity *ctx) {
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rz_return_val_if_fail(ctx, false);
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*ctx = 0;
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return true;
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}
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bool rz_parity_update(RzParity *ctx, const ut8 *data, size_t len) {
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rz_return_val_if_fail(ctx && data, false);
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ut32 ones = *ctx;
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for (size_t i = 0; i < len; ++i) {
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ut8 x = data[i];
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ones += ((x & 128) ? 1 : 0) + ((x & 64) ? 1 : 0) + ((x & 32) ? 1 : 0) + ((x & 16) ? 1 : 0) +
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((x & 8) ? 1 : 0) + ((x & 4) ? 1 : 0) + ((x & 2) ? 1 : 0) + ((x & 1) ? 1 : 0);
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}
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*ctx = ones;
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return true;
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}
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bool rz_parity_final(ut8 *digest, RzParity *ctx) {
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rz_return_val_if_fail(digest && ctx, false);
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*digest = (*ctx) & 1;
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return true;
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}
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