Method: Krypt::ASN1::ASN1Data#initialize

Defined in:
ext/krypt/core/krypt_asn1.c

#new(value, tag, tag_class) ⇒ ASN1Data

  • value: the value to be associated. See Primitive for the mappings

between ASN.1 types and Ruby types.

  • tag: a Number representing this value’s tag.

  • tag_class: a Symbol representing one of the four valid tag classes

:UNIVERSAL, :CONTEXT_SPECIFIC, :APPLICATION or :PRIVATE.

Creates an ASN1Data from scratch.



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# File 'ext/krypt/core/krypt_asn1.c', line 359

static VALUE
krypt_asn1_data_initialize(VALUE self, VALUE value, VALUE vtag, VALUE vtag_class)
{
    ID stag_class;
    int tag, tag_class, is_constructed;
    krypt_asn1_data *data;

    int_validate_tag_and_class(vtag, vtag_class);
    tag = NUM2INT(vtag);
    stag_class = SYM2ID(vtag_class);
    if (stag_class == sKrypt_TC_EXPLICIT)
	rb_raise(eKryptASN1Error, "Explicit tagging is only supported for explicit UNIVERSAL sub classes of ASN1Data");
    if (stag_class == sKrypt_TC_UNIVERSAL && tag > 30)
	rb_raise(eKryptASN1Error, "Tag too large for UNIVERSAL tag class");
    if ((tag_class = krypt_asn1_tag_class_for_id(stag_class)) == KRYPT_ERR)
        rb_raise(eKryptASN1Error, "Unknown tag class");
    is_constructed = rb_respond_to(value, sKrypt_ID_EACH);
    
    int_asn1_data_initialize(self, tag, tag_class, is_constructed, 0);

    int_asn1_data_get(self, data);
    data->update_cb = int_asn1_data_update_cb;

    int_asn1_data_set_tag(self, vtag);
    int_asn1_data_set_tag_class(self, vtag_class);
    int_asn1_data_set_infinite_length(self, Qfalse);
    int_asn1_data_set_value(self, value);

    int_asn1_data_set_modified(data, 1); /* newly created is modified by default */

    return self;
}