Package org.apache.harmony.security.asn1

Class DerInputStream

java.lang.Object

org.apache.harmony.security.asn1.BerInputStream

org.apache.harmony.security.asn1.DerInputStream

public final class DerInputStream
extends BerInputStream

Decodes ASN.1 types encoded with DER (X.690)

See Also:

ASN.1

Field Summary

Fields inherited from class org.apache.harmony.security.asn1.BerInputStream

buffer, choiceIndex, content, contentOffset, INDEFINIT_LENGTH, isIndefinedLength, isVerify, length, offset, oidElement, tag, tagOffset, times

Constructor Summary

Constructors

Constructor	Description
DerInputStream(byte[] encoded)
DerInputStream(byte[] encoded, int offset, int encodingLen)
DerInputStream(InputStream in)

Method Summary

Modifier and Type	Method	Description
int	next()	Decodes next encoded type.
void	readBitString()	Decodes ASN.1 bitstring type
void	readBoolean()	Decodes ASN.1 boolean type
void	readGeneralizedTime()	Decodes ASN.1 GeneralizedTime type
void	readOctetString()	Decodes ASN.1 Octetstring type
void	readSequence(ASN1Sequence sequence)	Decodes ASN.1 Sequence type
void	readSetOf(ASN1SetOf setOf)	Decodes ASN.1 SetOf type
void	readString(ASN1StringType type)	Decodes ASN.1 String type
void	readUTCTime()	Decodes ASN.1 UTCTime type

Methods inherited from class org.apache.harmony.security.asn1.BerInputStream

compactBuffer, get, getBuffer, getEncoded, getEndOffset, getLength, getLength, getOffset, getTagOffset, put, read, readContent, readEnumerated, readInteger, readOID, readSequenceOf, readSet, reset, setVerify

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

DerInputStream

public DerInputStream(byte[] encoded)
               throws IOException

Throws:

IOException

DerInputStream

public DerInputStream(byte[] encoded,
int offset,
int encodingLen)
               throws IOException

Throws:

IOException

DerInputStream

public DerInputStream(InputStream in)
               throws IOException

Throws:

IOException

Method Details

next

public int next()
         throws IOException

Description copied from class: BerInputStream

Decodes next encoded type. Initializes tag, length, tagOffset and contentOffset variables

Overrides:

next in class BerInputStream

Returns:

next decoded tag

Throws:

IOException - if error occured

readBitString

public void readBitString()
                   throws IOException

Description copied from class: BerInputStream

Decodes ASN.1 bitstring type

Overrides:

readBitString in class BerInputStream

Throws:

IOException

readBoolean

public void readBoolean()
                 throws IOException

Description copied from class: BerInputStream

Decodes ASN.1 boolean type

Overrides:

readBoolean in class BerInputStream

Throws:

IOException

readOctetString

public void readOctetString()
                     throws IOException

Description copied from class: BerInputStream

Decodes ASN.1 Octetstring type

Overrides:

readOctetString in class BerInputStream

Throws:

IOException

readSequence

public void readSequence(ASN1Sequence sequence)
                  throws IOException

Description copied from class: BerInputStream

Decodes ASN.1 Sequence type

Overrides:

readSequence in class BerInputStream

Throws:

IOException

readSetOf

public void readSetOf(ASN1SetOf setOf)
               throws IOException

Description copied from class: BerInputStream

Decodes ASN.1 SetOf type

Overrides:

readSetOf in class BerInputStream

Throws:

IOException

readString

public void readString(ASN1StringType type)
                throws IOException

Description copied from class: BerInputStream

Decodes ASN.1 String type

Overrides:

readString in class BerInputStream

Throws:

IOException - if an I/O error occurs or the end of the stream is reached

readUTCTime

public void readUTCTime()
                 throws IOException

Description copied from class: BerInputStream

Decodes ASN.1 UTCTime type

Overrides:

readUTCTime in class BerInputStream

Throws:

IOException - if an I/O error occurs or the end of the stream is reached

readGeneralizedTime

public void readGeneralizedTime()
                         throws IOException

Description copied from class: BerInputStream

Decodes ASN.1 GeneralizedTime type

Overrides:

readGeneralizedTime in class BerInputStream

Throws:

IOException - if error occured