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

```
@Restricted(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	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 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 Description

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

- 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

Constructor	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.

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