Click here to Skip to main content
65,938 articles
CodeProject is changing. Read more.
Articles
(untagged)

Complete (so far) Enumeration of ASN.1 TAGs

0.00/5 (No votes)
9 Jul 2021 1  
I found even the official documented lists of ASN.1 TAGs incomplete. So after scrounging around I was able to piece together a complete list (so far).

ASN.1, an old standard and though prevalent, does not seem to be any longer changing.

public enum TAG : byte
{
    BOOLEAN = 0x01,
    INTEGER = 0x02,
    BIT_STRING = 0x03,
    OCTET_STRING = 0x04,
    NULL_TAG = 0x05,
    OBJECT_IDENTIFIER = 0x06,  //a.k.a. OID
    OBJECT_DESCRIPTOR = 0x07,  //a.k.a. OID Descriptor
    EXTERNAL = 0x08,
    REAL = 0x09,
    ENUMERATED = 0x0a,
    EMBEDDED_PDV = 0x0b,
	UTF8_STRING = 0x0c,
    RELATIVE_OID = 0x0d,
    TIME = 0x0e,
    // Reserved 0x0f,
    SEQUENCE = 0x10,
    SET = 0x11,
    NUMERIC_STRING = 0x12,
    PRINTABLE_STRING = 0x13,
    T61_STRING = 0x14,
    VIDEOTEXT_STRING = 0x15,
    IA5_STRING = 0x16,
    UTC_TIME = 0x17,
    GENERALIZED_TIME = 0x18,
    GRAPHIC_STRING = 0x19,
    VISIBLE_STRING = 0x1a,
    GENERAL_STRING = 0x1b,
    UNIVERSAL_STRING = 0x1c,
    CHARACTER_STRING = 0x1d,
    BMP_STRING = 0x1e,
    DATE = 0x1f,
    TIME_OF_DAY = 0x20,
    DATE_TIME = 0x21,
    DURATION = 0x22,
    I18_OID = 0x23,  // Internationalized OID
    REL_I18_OID = 0x24  // Internationalized Relative OID
    // Reserved 0x25 and above
};

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here