DerParser (Instance Identity 2.2 API)

java.lang.Object
- org.jenkinsci.main.modules.instance_identity.pem.DerParser

```
@Restricted(value=org.kohsuke.accmod.restrictions.NoExternalUse.class)
public class DerParser
extends Object
```
A bare-minimum ASN.1 DER decoder, just having enough functions to decode PKCS#1 private keys. Especially, it doesn't handle explicitly tagged types with an outer tag.
This parser can only handle one layer. To parse nested constructs, get a new parser for each layer using Asn1Object.getParser().
There are many DER decoders in JRE but using them will tie this program to a specific JCE/JVM.

Author:

zhang

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`ANY`
`static int`	`APPLICATION`
`static int`	`BIT_STRING`
`static int`	`BMP_STRING`
`static int`	`BOOLEAN`
`static int`	`CONSTRUCTED`
`static int`	`CONTEXT`
`static int`	`ENUMERATED`
`static int`	`GENERAL_STRING`
`static int`	`GENERALIZED_TIME`
`static int`	`GRAPHIC_STRING`
`static int`	`IA5_STRING`
`protected InputStream`	`in`
`static int`	`INTEGER`
`static int`	`ISO646_STRING`
`static int`	`NULL`
`static int`	`NUMERIC_STRING`
`static int`	`OBJECT_IDENTIFIER`
`static int`	`OCTET_STRING`
`static int`	`PRINTABLE_STRING`
`static int`	`PRIVATE`
`static int`	`REAL`
`static int`	`RELATIVE_OID`
`static int`	`SEQUENCE`
`static int`	`SET`
`static int`	`T61_STRING`
`static int`	`UNIVERSAL`
`static int`	`UNIVERSAL_STRING`
`static int`	`UTC_TIME`
`static int`	`UTF8_STRING`
`static int`	`VIDEOTEX_STRING`

Constructor Summary

Constructors
Constructor and Description

DerParser(byte[] bytes)
Create a new DER decoder from a byte array.

DerParser(InputStream in)
Create a new DER decoder from an input stream.

Constructors
Constructor and Description
`DerParser(byte[] bytes)` Create a new DER decoder from a byte array.
`DerParser(InputStream in)` Create a new DER decoder from an input stream.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type Method and Description

Asn1Object read()
Read next object.
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`Asn1Object`	`read()` Read next object.

- Field Detail
  - UNIVERSAL
```
public static final int UNIVERSAL
```
    See Also:
    
    Constant Field Values
  - APPLICATION
```
public static final int APPLICATION
```
    See Also:
    
    Constant Field Values
  - CONTEXT
```
public static final int CONTEXT
```
    See Also:
    
    Constant Field Values
  - PRIVATE
```
public static final int PRIVATE
```
    See Also:
    
    Constant Field Values
  - CONSTRUCTED
```
public static final int CONSTRUCTED
```
    See Also:
    
    Constant Field Values
  - ANY
```
public static final int ANY
```
    See Also:
    
    Constant Field Values
  - BOOLEAN
```
public static final int BOOLEAN
```
    See Also:
    
    Constant Field Values
  - INTEGER
```
public static final int INTEGER
```
    See Also:
    
    Constant Field Values
  - BIT_STRING
```
public static final int BIT_STRING
```
    See Also:
    
    Constant Field Values
  - OCTET_STRING
```
public static final int OCTET_STRING
```
    See Also:
    
    Constant Field Values
  - NULL
```
public static final int NULL
```
    See Also:
    
    Constant Field Values
  - OBJECT_IDENTIFIER
```
public static final int OBJECT_IDENTIFIER
```
    See Also:
    
    Constant Field Values
  - REAL
```
public static final int REAL
```
    See Also:
    
    Constant Field Values
  - ENUMERATED
```
public static final int ENUMERATED
```
    See Also:
    
    Constant Field Values
  - RELATIVE_OID
```
public static final int RELATIVE_OID
```
    See Also:
    
    Constant Field Values
  - SEQUENCE
```
public static final int SEQUENCE
```
    See Also:
    
    Constant Field Values
  - SET
```
public static final int SET
```
    See Also:
    
    Constant Field Values
  - NUMERIC_STRING
```
public static final int NUMERIC_STRING
```
    See Also:
    
    Constant Field Values
  - PRINTABLE_STRING
```
public static final int PRINTABLE_STRING
```
    See Also:
    
    Constant Field Values
  - T61_STRING
```
public static final int T61_STRING
```
    See Also:
    
    Constant Field Values
  - VIDEOTEX_STRING
```
public static final int VIDEOTEX_STRING
```
    See Also:
    
    Constant Field Values
  - IA5_STRING
```
public static final int IA5_STRING
```
    See Also:
    
    Constant Field Values
  - GRAPHIC_STRING
```
public static final int GRAPHIC_STRING
```
    See Also:
    
    Constant Field Values
  - ISO646_STRING
```
public static final int ISO646_STRING
```
    See Also:
    
    Constant Field Values
  - GENERAL_STRING
```
public static final int GENERAL_STRING
```
    See Also:
    
    Constant Field Values
  - UTF8_STRING
```
public static final int UTF8_STRING
```
    See Also:
    
    Constant Field Values
  - UNIVERSAL_STRING
```
public static final int UNIVERSAL_STRING
```
    See Also:
    
    Constant Field Values
  - BMP_STRING
```
public static final int BMP_STRING
```
    See Also:
    
    Constant Field Values
  - UTC_TIME
```
public static final int UTC_TIME
```
    See Also:
    
    Constant Field Values
  - GENERALIZED_TIME
```
public static final int GENERALIZED_TIME
```
    See Also:
    
    Constant Field Values
  - in
```
protected final InputStream in
```
- Constructor Detail
  - DerParser
```
public DerParser(InputStream in)
          throws IOException
```
    Create a new DER decoder from an input stream.
    
    Parameters:
    
    in - The DER encoded stream
    
    Throws:
    
    IOException - if problems parsing
  - DerParser
```
public DerParser(byte[] bytes)
          throws IOException
```
    Create a new DER decoder from a byte array.
    
    Parameters:
    
    bytes - the encoded bytes
    
    Throws:
    
    IOException - if problems parsing
- Method Detail
  - read
```
public Asn1Object read()
                throws IOException
```
    Read next object. If it's constructed, the value holds encoded content and it should be parsed by a new parser from Asn1Object.getParser.
    
    Returns:
    
    parsed object
    
    Throws:
    
    IOException - if problems parsing

Class DerParser

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

UNIVERSAL

APPLICATION

CONTEXT

PRIVATE

CONSTRUCTED

ANY

BOOLEAN

INTEGER

BIT_STRING

OCTET_STRING

NULL

OBJECT_IDENTIFIER

REAL

ENUMERATED

RELATIVE_OID

SEQUENCE

SET

NUMERIC_STRING

PRINTABLE_STRING

T61_STRING

VIDEOTEX_STRING

IA5_STRING

GRAPHIC_STRING

ISO646_STRING

GENERAL_STRING

UTF8_STRING

UNIVERSAL_STRING

BMP_STRING

UTC_TIME

GENERALIZED_TIME

in

Constructor Detail

DerParser

DerParser

Method Detail

read