资 源 简 介
a2c is an ASN.1 compiler. It reads one or more ASN.1 syntax files
(often called ASN.1 modules) and emits a C program that embodies that
syntax. a2c is useful to programmers who are writing C programs that
will read and/or write data that is expressed in an ASN.1 format, such
as PKIX certificates and CMS (S/MIME) messages.
a2c handles nearly all of the ASN.1:2002 syntax (inputs in earlier
versions can be converted to ASN.1:2002). In specific, the compiler
can handle ITU-T Rec. X.680 (without the XML Value notation and a
couple of other minor items), X.681, X.682, X.683, and DER and BER
from X.690.
The C program created by a2c consists of many structures and functions
that can then be used by another program. a2c comes with an optional
runtime library that can be used to greatly speed parts of that
integration.
