org.conscrypt.ct

Class Serialization

java.lang.Object

org.conscrypt.ct.Serialization

public class Serialization
extends Object

Method Summary

Modifier and Type	Method and Description
static byte	readByte(InputStream input) Read a single byte from the input stream.
static byte[]	readDEROctetString(byte[] input)
static byte[]	readDEROctetString(InputStream input)
static byte[]	readFixedBytes(InputStream input, int length) Read a fixed number of bytes from the input stream.
static byte[][]	readList(byte[] input, int listWidth, int elemWidth)
static byte[][]	readList(InputStream input, int listWidth, int elemWidth) Read a variable length vector of variable sized elements as described by RFC5246 section 4.3.
static long	readLong(InputStream input, int width) Read a number in big endian format from the input stream.
static int	readNumber(InputStream input, int width) Read a number in big endian format from the input stream.
static byte[]	readVariableBytes(InputStream input, int width) Read a length-prefixed sequence of bytes.
static void	writeFixedBytes(OutputStream output, byte[] data) Write a fixed number sequence of bytes to the ouput stream.
static void	writeNumber(OutputStream output, long value, int width) Write a number to the output stream.
static void	writeVariableBytes(OutputStream output, byte[] data, int width) Write length prefixed sequence of bytes to the ouput stream.

Methods inherited from class java.lang.Object

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

Method Detail

readDEROctetString

public static byte[] readDEROctetString(byte[] input)
                                 throws SerializationException

Throws:

SerializationException

readDEROctetString

public static byte[] readDEROctetString(InputStream input)
                                 throws SerializationException

Throws:

SerializationException

readList

public static byte[][] readList(byte[] input,
                                int listWidth,
                                int elemWidth)
                         throws SerializationException

Throws:

SerializationException

readList

public static byte[][] readList(InputStream input,
                                int listWidth,
                                int elemWidth)
                         throws SerializationException

Read a variable length vector of variable sized elements as described by RFC5246 section 4.3. The vector is prefixed by its total length, in bytes and in big endian format, so is each element contained in the vector.

Parameters:

listWidth - the width of the vector's length field, in bytes.

elemWidth - the width of each element's length field, in bytes.

Throws:

SerializationException - if EOF is encountered.

readVariableBytes

public static byte[] readVariableBytes(InputStream input,
                                       int width)
                                throws SerializationException

Read a length-prefixed sequence of bytes. The length must be encoded in big endian format.

Parameters:

width - the width of the length prefix, in bytes.

Throws:

SerializationException - if EOF is encountered, or if width is negative or greater than 4

readFixedBytes

public static byte[] readFixedBytes(InputStream input,
                                    int length)
                             throws SerializationException

Read a fixed number of bytes from the input stream.

Parameters:

length - the number of bytes to read.

Throws:

SerializationException - if EOF is encountered.

readNumber

public static int readNumber(InputStream input,
                             int width)
                      throws SerializationException

Read a number in big endian format from the input stream. This methods only supports a width of up to 4 bytes.

Parameters:

width - the width of the number, in bytes.

Throws:

SerializationException - if EOF is encountered, or if width is negative or greater than 4

readLong

public static long readLong(InputStream input,
                            int width)
                     throws SerializationException

Read a number in big endian format from the input stream. This methods supports a width of up to 8 bytes.

Parameters:

width - the width of the number, in bytes.

Throws:

SerializationException - if EOF is encountered.

IllegalArgumentException - if width is negative or greater than 8

readByte

public static byte readByte(InputStream input)
                     throws SerializationException

Read a single byte from the input stream.

Throws:

SerializationException - if EOF is encountered.

writeVariableBytes

public static void writeVariableBytes(OutputStream output,
                                      byte[] data,
                                      int width)
                               throws SerializationException

Write length prefixed sequence of bytes to the ouput stream. The length prefix is encoded in big endian order.

Parameters:

data - the data to be written.

width - the width of the length prefix, in bytes.

Throws:

SerializationException - if the length of data is too large to fit in width bytes or width is negative.

writeFixedBytes

public static void writeFixedBytes(OutputStream output,
                                   byte[] data)
                            throws SerializationException

Write a fixed number sequence of bytes to the ouput stream.

Parameters:

data - the data to be written.

Throws:

SerializationException

writeNumber

public static void writeNumber(OutputStream output,
                               long value,
                               int width)
                        throws SerializationException

Write a number to the output stream. The number is encoded in big endian order.

Parameters:

value - the value to be written.

width - the width of the encoded number, in bytes

Throws:

SerializationException - if the number is too large to fit in width bytes or width is negative.