Difference between revisions of "Unit ASN.1"

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''To be documented''
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<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 20px; padding-bottom: 15px;">
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<div style="font-size: 14px; padding-left: 12px;">'''ASN1 specific constants''' <code> ASN1_* </code></div>
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<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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{| class="wikitable" style="font-size: 14px; background: white;"
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|-
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| <code>ASN1_TAG_EOC  = $00;</code>
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| Not used with DER
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|-
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| <code>ASN1_TAG_BOOLEAN = $01;</code>
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| &nbsp;
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|-
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| <code>ASN1_TAG_INTEGER = $02;</code>
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| &nbsp;
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|-
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| <code>ASN1_TAG_BITSTRING = $03;</code>
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| &nbsp;
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|-
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| <code>ASN1_TAG_OCTETSTRING = $04;</code>
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| &nbsp;
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|-
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| <code>ASN1_TAG_NULL = $05;</code>
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| &nbsp;
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|-
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| <code>ASN1_TAG_OID = $06;</code>
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| &nbsp;
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|-
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| <code>ASN1_TAG_OBJECT_DESCRIPTOR = $07;</code>
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| Not supported
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|-
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| <code>ASN1_TAG_EXTERNAL = $08;</code>
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| Not supported
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|-
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| <code>ASN1_TAG_REAL = $09;</code>
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| Not supported
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|-
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| <code>ASN1_TAG_ENUMERATED = $0A;</code>
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| Not supported
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|-
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| <code>ASN1_TAG_EMBEDDED_PDV = $0B;</code>
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| Not supported
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|-
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| <code>ASN1_TAG_UTF8STRING = $0C;</code>
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| Not supported
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|-
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| <code>ANS1_TAG_RELATIVE_OID = $0D;</code>
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| &nbsp;
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|-
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| <code>ASN1_TAG_SEQUENCE = $10;</code>
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| Constructed
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|-
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| <code>ASN1_TAG_SET = $11;</code>
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| &nbsp;
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|-
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| <code>ASN1_TAG_NUMERICSTRING = $12;</code>
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| Not supported
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|-
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| <code>ASN1_TAG_PRINTABLESTRING = $13;</code>
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| &nbsp;
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|-
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| <code>ASN1_TAG_TG1STRING = $14;</code>
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| Not supported
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|-
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| <code>ASN1_TAG_VIDEOTEXSTRING = $15;</code>
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| Not supported
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|-
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| <code>ASN1_TAG_IA5STRING = $16;</code>
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| &nbsp;
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|-
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| <code>ASN1_TAG_UTCTIME = $17;</code>
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| &nbsp;
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|-
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| <code>ASN1_TAG_GENERALIZEDTIME = $18;</code>
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| Not supported
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|-
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| <code>ASN1_TAG_GRAPHICSTRING = $19;</code>
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| Not supported
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|-
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| <code>ASN1_TAG_VISIBLESTRING = $1A;</code>
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| &nbsp;
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|-
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| <code>ASN1_TAG_GENERALSTRING = $1B;</code>
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| Not supported
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|-
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| <code>ASN1_TAG_UNIVERSALSTRING = $1C;</code>
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| Not supported
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|-
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| <code>ASN1_TAG_CHARACTERSTRING = $1D;</code>
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| Not supported
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|-
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| <code>ASN1_TAG_BMPSTRING = $1E;</code>
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| Not supported
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|-
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|colspan="2"|&nbsp;
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|-
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| <code>ASN1_TAG_LONGFORM = $1F;</code>
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| Tag is encoded in long form
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|-
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|colspan="2"|&nbsp;
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|-
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| <code>ASN1_CLASS_UNIVERSAL = 0;</code>
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| &nbsp;
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|-
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| <code>ASN1_CLASS_APPLICATION = 1;</code>
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| &nbsp;
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|-
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| <code>ASN1_CLASS_CONTEXT_SPECIFIC = 2;</code>
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| &nbsp;
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|-
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| <code>ASN1_CLASS_PRIVATE = 3;</code>
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| &nbsp;
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|-
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|colspan="2"|&nbsp;
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|-
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| <code>ASN1_MAX_OID_LEN = 20;</code>
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| &nbsp;
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|-
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|}
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</div></div>
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<br /> 
  
 
=== Type definitions ===
 
=== Type definitions ===

Revision as of 00:26, 19 April 2018

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Description

Ultibo ASN.1 interface unit

Abstract Syntax Notation One (ASN.1) is an interface description language for defining data structures that can be serialized and deserialized in a standard, cross-platform way. It's broadly used in telecommunications and computer networking, and especially in cryptography.

This unit currently only provides the basic functionality required by X509 to read and parse a certificate in DER format.

It is expected that this unit will be expanded to incorporate additional functions over time.

Constants


ASN1 specific constants ASN1_*
ASN1_TAG_EOC = $00; Not used with DER
ASN1_TAG_BOOLEAN = $01;  
ASN1_TAG_INTEGER = $02;  
ASN1_TAG_BITSTRING = $03;  
ASN1_TAG_OCTETSTRING = $04;  
ASN1_TAG_NULL = $05;  
ASN1_TAG_OID = $06;  
ASN1_TAG_OBJECT_DESCRIPTOR = $07; Not supported
ASN1_TAG_EXTERNAL = $08; Not supported
ASN1_TAG_REAL = $09; Not supported
ASN1_TAG_ENUMERATED = $0A; Not supported
ASN1_TAG_EMBEDDED_PDV = $0B; Not supported
ASN1_TAG_UTF8STRING = $0C; Not supported
ANS1_TAG_RELATIVE_OID = $0D;  
ASN1_TAG_SEQUENCE = $10; Constructed
ASN1_TAG_SET = $11;  
ASN1_TAG_NUMERICSTRING = $12; Not supported
ASN1_TAG_PRINTABLESTRING = $13;  
ASN1_TAG_TG1STRING = $14; Not supported
ASN1_TAG_VIDEOTEXSTRING = $15; Not supported
ASN1_TAG_IA5STRING = $16;  
ASN1_TAG_UTCTIME = $17;  
ASN1_TAG_GENERALIZEDTIME = $18; Not supported
ASN1_TAG_GRAPHICSTRING = $19; Not supported
ASN1_TAG_VISIBLESTRING = $1A;  
ASN1_TAG_GENERALSTRING = $1B; Not supported
ASN1_TAG_UNIVERSALSTRING = $1C; Not supported
ASN1_TAG_CHARACTERSTRING = $1D; Not supported
ASN1_TAG_BMPSTRING = $1E; Not supported
 
ASN1_TAG_LONGFORM = $1F; Tag is encoded in long form
 
ASN1_CLASS_UNIVERSAL = 0;  
ASN1_CLASS_APPLICATION = 1;  
ASN1_CLASS_CONTEXT_SPECIFIC = 2;  
ASN1_CLASS_PRIVATE = 3;  
 
ASN1_MAX_OID_LEN = 20;  


Type definitions

To be documented

Public variables

None defined

Function declarations

To be documented


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