The parent class for all constructed encodings. The value attribute of a Constructive
is always an Array
. Attributes are the same as for ASN1Data
, with the addition of tagging.
SET and SEQUENCE
Most constructed encodings come in the form of a SET or a SEQUENCE. These encodings are represented by one of the two sub-classes of Constructive:
-
OpenSSL::ASN1::Sequence
Please note that tagged sequences and sets are still parsed as instances of ASN1Data
. Find
further details on tagged values there.
Example - constructing a SEQUENCE
int = OpenSSL::ASN1::Integer.new(1) str = OpenSSL::ASN1::PrintableString.new('abc') sequence = OpenSSL::ASN1::Sequence.new( [ int, str ] )
Example - constructing a SET
int = OpenSSL::ASN1::Integer.new(1) str = OpenSSL::ASN1::PrintableString.new('abc') set = OpenSSL::ASN1::Set.new( [ int, str ] )
Instance Methods
ext/openssl/lib/openssl/asn1.rb
View on GitHub
# File tmp/rubies/ruby-master/ext/openssl/lib/openssl/asn1.rb, line 148
def each(&blk)
@value.each(&blk)
self
end
Calls the given block once for each element in self, passing that element as parameter asn1. If no block is given, an enumerator is returned instead.
Example
asn1_ary.each do |asn1| puts asn1 end
ext/openssl/ossl_asn1.c
View on GitHub
static VALUE
ossl_asn1cons_to_der(VALUE self)
{
VALUE ary, str;
long i;
int indef_len;
indef_len = RTEST(ossl_asn1_get_indefinite_length(self));
ary = rb_convert_type(ossl_asn1_get_value(self), T_ARRAY, "Array", "to_a");
str = rb_str_new(NULL, 0);
for (i = 0; i < RARRAY_LEN(ary); i++) {
VALUE item = RARRAY_AREF(ary, i);
if (indef_len && rb_obj_is_kind_of(item, cASN1EndOfContent)) {
if (i != RARRAY_LEN(ary) - 1)
ossl_raise(eASN1Error, "illegal EOC octets in value");
/*
* EOC is not really part of the content, but we required to add one
* at the end in the past.
*/
break;
}
item = ossl_to_der_if_possible(item);
StringValue(item);
rb_str_append(str, item);
}
return to_der_internal(self, 1, indef_len, str);
}
See ASN1Data#to_der
for details.