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clzola/hex2bin.c

Created April 20, 2016 11:05
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hex2bin.c
unsigned char* hex2bin(const char* hexstr, size_t* size)
{
size_t hexstrLen = strlen(hexstr);
size_t bytesLen = hexstrLen / 2;
unsigned char* bytes = (unsigned char*) malloc(bytesLen);
int count = 0;
const char* pos = hexstr;
for(count = 0; count < bytesLen; count++) {
sscanf(pos, "%2hhx", &bytes[count]);
pos += 2;
}
if( size != NULL )
*size = bytesLen;
return bytes;
}
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