Method: OpenSSL::ASN1::ASN1Data#to_der

Defined in:
ossl_asn1.c

#to_der ⇒ DER-encoded String

Encodes this ASN1Data into a DER-encoded String value. The result is DER-encoded except for the possibility of infinite length encodings. Infinite length encodings are not allowed in strict DER, so strictly speaking the result of such an encoding would be a BER-encoding.

Returns:

  • (DER-encoded String) 


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# File 'ossl_asn1.c', line 760

static VALUE
ossl_asn1data_to_der(VALUE self)
{
    VALUE value, der, inf_length;
    int tag, tag_class, is_cons = 0;
    long length;
    unsigned char *p;

    value = ossl_asn1_get_value(self);
    if(rb_obj_is_kind_of(value, rb_cArray)){
  is_cons = 1;
  value = join_der(value);
    }
    StringValue(value);

    tag = ossl_asn1_tag(self);
    tag_class = ossl_asn1_tag_class(self);
    inf_length = ossl_asn1_get_infinite_length(self);
    if (inf_length == Qtrue) {
  is_cons = 2;
    }
    if((length = ossl_asn1_object_size(is_cons, RSTRING_LENINT(value), tag)) <= 0)
  ossl_raise(eASN1Error, NULL);
    der = rb_str_new(0, length);
    p = (unsigned char *)RSTRING_PTR(der);
    ossl_asn1_put_object(&p, is_cons, RSTRING_LENINT(value), tag, tag_class);
    memcpy(p, RSTRING_PTR(value), RSTRING_LEN(value));
    p += RSTRING_LEN(value);
    ossl_str_adjust(der, p);

    return der;
}