Fernando,
I think all user-defined tags in a CHOICE (e.g., [0]) are EXPLICIT -- I could be wrong
and don't have time to check right now (it's been a while ...).
So I think you want:
ASN1_EXP(Seq1, value.field2,Sub_seq200, 0)
Frank
"Fernando Moya"
<[EMAIL PROTECTED] To: <[EMAIL PROTECTED]>
> cc:
Sent by: Subject: d2i and ASN1_CHOICE
owner-openssl-dev@
openssl.org
06/26/2003 04:55
AM
Please respond to
openssl-dev
Hi, I am having problems with CHOICE in the following ASN.1 sequence:
---------------------------------------------------------------------
DEFINITIONS IMPLICIT TAGS
Sub_seq200 ::= SEQUENCE
{
sub_field1 Sub_seq100 OPTIONAL,
sub_field2 [0] Sub_seq400 OPTIONAL
}
Seq1 ::= CHOICE
{
field1 Sub_seq100,
field2 [0] Sub_seq200
}
---------------------------------------------------------------------
Implemented by:
typedef struct Sub_seq200_st
{
Sub_seq100 *sub_field1;
Sub_seq200 *sub_field2;
}Sub_seq200;
typedef struct Seq1_st
{
int type;
union {
char *ptr;
Sub_seq100 *field1;
Sub_seq200 *field2;
}value;
}Seq1;
ASN1_SEQUENCE(Sub_seq200) = {
ASN1_OPT(Sub_seq200,sub_field1, Sub_seq100),
ASN1_IMP_OPT(Sub_seq200,sub_field2, Sub_seq400,0),
} ASN1_SEQUENCE_END(Sub_seq200)
IMPLEMENT_ASN1_FUNCTIONS(Sub_seq200)
ASN1_CHOICE(Seq1) = {
ASN1_SIMPLE(Seq1, value.field1,Sub_seq100),
ASN1_IMP(Seq1, value.field2,Sub_seq200, 0)
} ASN1_CHOICE_END(Seq1)
IMPLEMENT_ASN1_FUNCTIONS(Seq1)
Well, Seq1_new, Seq1_free and i2d_Seq1 functions work correctly and DER
output is right, but when I call d2i_Seq1 with DER output from i2d_Seq1, it
returns NULL. I think it could be an incorrect definition of
ASN1_CHOICE(Seq1).
Does Anybody know what is wrong?
Thanks in advance.
Fernando Moya Bernal.
University of Malaga. Spain.
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