Package com.github.toolarium.security.pki.impl.rsa.der

Class DERInputBuffer

java.lang.Object

java.io.InputStream

java.io.ByteArrayInputStream

com.github.toolarium.security.pki.impl.rsa.der.DERInputBuffer

All Implemented Interfaces:

Closeable, AutoCloseable, Cloneable

public class DERInputBuffer
extends ByteArrayInputStream
implements Cloneable

DER input buffer ... this is the main abstraction in the DER library which actively works with the "untyped byte stream" abstraction. It does so with impunity, since it's not intended to be exposed to anyone who could violate the "typed value stream" DER model and hence corrupt the input stream of DER values.

Field Summary

Fields inherited from class java.io.ByteArrayInputStream

buf, count, mark, pos

Constructor Summary

Constructors

Constructor	Description
DERInputBuffer(byte[] buf)	Constructor for DerInputBuffer

Method Summary

Modifier and Type	Method	Description
DERInputBuffer	dup()	Duplicate
boolean	equals(Object other)
byte[]	getBitString()	Returns the bit string which takes up the rest of this buffer.
BitArray	getUnalignedBitString()	Returns the bit string which takes up the rest of this buffer.
BigInt	getUnsigned(int l)	Returns the unsigned integer which takes up the specified number of bytes in this buffer.
int	hashCode()	Returns a hashcode for this DerInputBuffer.
void	truncate(int len)	Truncate

Methods inherited from class java.io.ByteArrayInputStream

available, close, mark, markSupported, read, read, readAllBytes, readNBytes, reset, skip, transferTo

Methods inherited from class java.io.InputStream

nullInputStream, read, readNBytes, skipNBytes

Methods inherited from class java.lang.Object

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

Constructor Details

DERInputBuffer

public DERInputBuffer(byte[] buf)

Constructor for DerInputBuffer

Parameters:

buf - the buffer

Method Details

dup

public DERInputBuffer dup()
                   throws IllegalArgumentException

Duplicate

Returns:

the buffer

Throws:

IllegalArgumentException - In case of invalid argument

equals

public boolean equals(Object other)

Overrides:

equals in class Object

See Also:

• Object.equals(java.lang.Object)

hashCode

public int hashCode()

Returns a hashcode for this DerInputBuffer.

Overrides:

hashCode in class Object

Returns:

a hashcode for this DerInputBuffer.

truncate

public void truncate(int len)
              throws IOException

Truncate

Parameters:

len - the length

Throws:

IOException - In case of missing data

getUnsigned

public BigInt getUnsigned(int l)
                   throws IOException

Returns the unsigned integer which takes up the specified number of bytes in this buffer.

Parameters:

l - the length

Returns:

the integer

Throws:

IOException - In case of missing data

getBitString

public byte[] getBitString()

Returns the bit string which takes up the rest of this buffer. This bit string must be byte-aligned.

Returns:

the byte array

getUnalignedBitString

public BitArray getUnalignedBitString()

Returns the bit string which takes up the rest of this buffer. The bit string need not be byte-aligned.

Returns:

the bit array