/*******************************************************************************
*   Ledger Ethereum App
*   (c) 2016-2019 Ledger
*
*  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.
********************************************************************************/

static const unsigned char hex_digits[] = {'0', '1', '2', '3', '4', '5', '6', '7',
                                           '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};

void array_hexstr(char *strbuf, const void *bin, unsigned int len) {
    while (len--) {
        *strbuf++ = hex_digits[((*((char *)bin)) >> 4) & 0xF];
        *strbuf++ = hex_digits[(*((char *)bin)) & 0xF];
        bin = (const void *)((unsigned int)bin + 1);
    }
    *strbuf = 0; // EOS
}