1 /* 2 * Copyright (c) 2018 Yubico AB. All rights reserved. 3 * Use of this source code is governed by a BSD-style 4 * license that can be found in the LICENSE file. 5 * SPDX-License-Identifier: BSD-2-Clause 6 */ 7 8 #include "fido.h" 9 10 int 11 fido_buf_read(const unsigned char **buf, size_t *len, void *dst, size_t count) 12 { 13 if (count > *len) 14 return (-1); 15 16 memcpy(dst, *buf, count); 17 *buf += count; 18 *len -= count; 19 20 return (0); 21 } 22 23 int 24 fido_buf_write(unsigned char **buf, size_t *len, const void *src, size_t count) 25 { 26 if (count > *len) 27 return (-1); 28 29 memcpy(*buf, src, count); 30 *buf += count; 31 *len -= count; 32 33 return (0); 34 } 35