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Class iaik.utils.ReplaceInputStream 

java.lang.Object
   |
   +----java.io.InputStream
           |
           +----java.io.FilterInputStream
                   |
                   +----iaik.utils.ReplaceInputStream
public synchronized class ReplaceInputStream
extends FilterInputStream

Constructor Index

o ReplaceInputStream(InputStream, String[][])
Constructs an input stream using a cipher that must be initialized for either encryption or decryption, that is, a cipher whose state is either ENCRYPT or DECRYPT.

Method Index

o read()
Returns the next encrypted or decrypted byte, depending on the cipher state.
o read(byte[], int, int)
Fills up the specified bytes of the b array with the next len encrypted or decrypted bytes (depending on the cipher state).

Constructors

o ReplaceInputStream 
 public ReplaceInputStream(InputStream is,
                           String replace[][])
Constructs an input stream using a cipher that must be initialized for either encryption or decryption, that is, a cipher whose state is either ENCRYPT or DECRYPT.

Parameters:
is - - the input stream.
cipher - - an initialized cipher.
See Also:
Cipher

Methods

o read 
 public int read(byte b[],
                 int off,
                 int len) throws IOException
Fills up the specified bytes of the b array with the next len encrypted or decrypted bytes (depending on the cipher state).

Parameters:
b - - the byte array into which the encrypted or decrypted bytes will be read.
off - - the offset into b indicating where the first encrypted or decrypted byte should be read.
len - - the number of encrypted/decrypted bytes to read into b, starting at offset off.
Returns:
the number of bytes read into b, or -1 if fewer than len encrypted/decrypted bytes remained.
Throws: IOException
if an error occurs.
Overrides:
read in class FilterInputStream
o read 
 public int read() throws IOException
Returns the next encrypted or decrypted byte, depending on the cipher state.

Returns:
the next encrypted or decrypted byte, or -1 if the last encrypted/decrypted byte was already returned.
Throws: IOException
if an error occurs.
Overrides:
read in class FilterInputStream 
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