Article View: comp.protocols.iso
Article #656Re: Escape sequences in ASN.1 character strings
From: Simon Walton
Date: Mon, 23 Jul 1990 11:39
Date: Mon, 23 Jul 1990 11:39
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> Are values in ASN.1 character string types that by default include no Cn > sets (e.g. Graphic String) permitted to load a Cn set via an escape > sequence? I should appreciate a reference to appropriate defining > text. When using basic encoding rules the representation for GraphicString may contain escape sequences to invoke Cn character sets. NumericString, PrintableString and VisibleString (ISO646String) may not contain escape sequences (or control characters). In ASN.1 the character strings themselves contain no escape sequences, just the actual characters. Use of escape sequences is a matter for the transfer syntax (ie. BER). ISO 2022 defines the use of escape sequences, ISO 2375 together with the International Register of Coded Character Sets defines the characters and their registration numbers. The Register is administrated by ECMA. Simon
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!decwrl!ucbvax!CS.UCL.AC.UK!S.Walton From: S.Walton@CS.UCL.AC.UK (Simon Walton) Newsgroups: comp.protocols.iso Subject: Re: Escape sequences in ASN.1 character strings Message-ID: <19316.648733166@UK.AC.UCL.CS> Date: 23 Jul 90 11:39:26 GMT References: <997@sl10c.concurrent.co.uk> Sender: daemon@ucbvax.BERKELEY.EDU Organization: The Internet Lines: 19