Creating ASN.1 definitions structures from memory-buffered ASN.1 description

[Y. Snegirev]

Hi!
First we would like to thank all developers, contributors and 
maintainers of libtasn1 for providing a wonderful library, which, in 
turn, provides possibilities to deal with DER-encoded data and ASN.1 
descriptions in runtime, without need to recompile the entire 
applications when some definitions change.
However, we discovered, that some capabilities were absent from the 
library, one of which being the ability to process memory-cached ASN.1 
descriptions. So, in order to accomplish this, we modified libtasn a 
bit. The patch is attached.
Also, we got used to call asn1_get_length_der on a part of DER-encoded 
piece of data in order to acquire the size of entire piece. But, 
starting from commit  3873c6a49122e3f15901646e072938557acd3f8e (" Added 
overflow detection that does not depend on specific compiler, and 
asn1_get_der_length() verifies the length of the input data in small 
numbers as well.") this is no longer possible. So, the question is as 
follows: is there a way to achieve the same result now?

--
Sincerely yours,
Yuri V. Snegirev
Compass Plus Ltd

tree_from_buf.patch
Description: tree_from_buf.patch