a2c - Google Codea2c 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. 署名ポリシ等を読み込ませようとASN.1モジュールを食わせてみるも、見事に失敗、、、、どもうシンタックスが比較的新しい