int ok = hw_DecodeBase64(UBYTE *src, int srclen, UBYTE *dst, int *dstlen,
struct hwTagList *tags);
src memory buffer to the
memory buffer passed in the dst parameter. Make sure that the dst buffer
is large enough to hold the decoded data. On success, hw_DecodeBase64() will
return True, otherwise False.
int which will receive the length of the decoded dataNULL for nowTrue for success, False if there was a decoding error