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/*
* Copyright 2018-present MongoDB, Inc.
*
* 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.
*/
#include "kms_message_private.h"
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
char *
hexlify (const uint8_t *buf, size_t len)
{
char *hex_chars = malloc (len * 2 + 1);
char *p = hex_chars;
size_t i;
for (i = 0; i < len; i++) {
p += sprintf (p, "%02x", buf[i]);
}
*p = '\0';
return hex_chars;
}
uint8_t *
unhexlify (const char *hex_chars, size_t *len)
{
uint8_t *buf;
uint8_t *pos;
*len = strlen (hex_chars) / 2;
buf = malloc (*len);
pos = buf;
while (*hex_chars) {
KMS_ASSERT (1 == sscanf (hex_chars, "%2hhx", pos));
pos++;
hex_chars += 2;
}
return buf;
}
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