ASN1_object_size
objsize = ASN1_object_size(0, a->length, V_ASN1_OBJECT);
len = ASN1_object_size(0, hdr_len, asn1_tags.imp_tag);
len = ASN1_object_size(0, len, etmp->exp_tag);
buflen = ASN1_object_size(0, inl, ctx->asn1_tag) - inl;
seqlen = ASN1_object_size(ndef, seqcontlen, tag);
sklen = ASN1_object_size(ndef, skcontlen, sktag);
ret = ASN1_object_size(ndef, sklen, ttag);
ret = ASN1_object_size(ndef, i, ttag);
return ASN1_object_size(ndef, len, tag);
os.length = ASN1_object_size(0, len, V_ASN1_OCTET_STRING);
int ASN1_object_size(int constructed, int length, int tag);