全面介绍ASN.1的书记(英文),系统地介绍了抽象语法标记,各种编解码规则:BER/CER/DER/PER,对从事ASN.1的朋友很有用处.-comprehensive introduction to the secretary of the ASN.1 (English), a systematic introduction to the abstract syntax markings, various codecs rules : BER / CER / DER / PER, for th