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Three Data Types

Listing 2 illustrates the three data types of interest, which are defined as symbolic constants in a header file called ParseAnyDataType.h.

Listing 2 SEQUENCE, INTEGER, and STRING Types

#define SEQ_CLASS ’\x30’
#define INT_CLASS ’\x02’
#define STR_CLASS ’\x04’

I’ll use these constants when parsing the hard-coded ASN.1 data stream from Listing 1.

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