word32 SetExplicit(byte number, word32 len, byte* output)
{
    output[0] = ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC | number;
    return SetLength(len, output + 1) + 1;
}
word32 SetExplicit(byte number, word32 len, byte* output)
{
    output[0] = ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC | number;
    return SetLength(len, output + 1) + 1;
}