32 lines
1.1 KiB
C
32 lines
1.1 KiB
C
// Copyright 2020 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not
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// use this file except in compliance with the License. You may obtain a copy of
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// the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations under
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// the License.
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#include "dice/utils.h"
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#include <stdint.h>
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void DiceHexEncode(const uint8_t* in, size_t num_bytes, void* out,
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size_t out_size) {
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const uint8_t kHexMap[16] = "0123456789abcdef";
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size_t in_pos = 0;
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size_t out_pos = 0;
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uint8_t* out_bytes = out;
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for (in_pos = 0; in_pos < num_bytes && out_pos < out_size; ++in_pos) {
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out_bytes[out_pos++] = kHexMap[(in[in_pos] >> 4)];
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if (out_pos < out_size) {
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out_bytes[out_pos++] = kHexMap[in[in_pos] & 0xF];
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}
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}
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}
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