outputstreamencryption.html

IText PDF开发工具说明文档,使用很方便。

cipher</H3>
<PRE>
protected <A HREF="../../../../com/lowagie/text/pdf/crypto/AESCipher.html" title="class in com.lowagie.text.pdf.crypto">AESCipher</A> <B>cipher</B></PRE>
<DL>
<DL>
</DL>
</DL>
<HR>

<A NAME="sb"><!-- --></A><H3>
sb</H3>
<PRE>
private byte[] <B>sb</B></PRE>
<DL>
<DL>
</DL>
</DL>
<HR>

<A NAME="AES_128"><!-- --></A><H3>
AES_128</H3>
<PRE>
private static final int <B>AES_128</B></PRE>
<DL>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#com.lowagie.text.pdf.OutputStreamEncryption.AES_128">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="aes"><!-- --></A><H3>
aes</H3>
<PRE>
private boolean <B>aes</B></PRE>
<DL>
<DL>
</DL>
</DL>
<HR>

<A NAME="finished"><!-- --></A><H3>
finished</H3>
<PRE>
private boolean <B>finished</B></PRE>
<DL>
<DL>
</DL>
</DL>

<!-- ========= CONSTRUCTOR DETAIL ======== -->

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<A NAME="OutputStreamEncryption(java.io.OutputStream, byte[], int, int, int)"><!-- --></A><H3>
OutputStreamEncryption</H3>
<PRE>
public <B>OutputStreamEncryption</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</A>&nbsp;out,
                              byte[]&nbsp;key,
                              int&nbsp;off,
                              int&nbsp;len,
                              int&nbsp;revision)</PRE>
<DL>
<DD>Creates a new instance of OutputStreamCounter
<P>
</DL>
<HR>

<A NAME="OutputStreamEncryption(java.io.OutputStream, byte[], int)"><!-- --></A><H3>
OutputStreamEncryption</H3>
<PRE>
public <B>OutputStreamEncryption</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</A>&nbsp;out,
                              byte[]&nbsp;key,
                              int&nbsp;revision)</PRE>
<DL>
</DL>

<!-- ============ METHOD DETAIL ========== -->

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<A NAME="close()"><!-- --></A><H3>
close</H3>
<PRE>
public void <B>close</B>()
           throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD>Closes this output stream and releases any system resources
 associated with this stream. The general contract of <code>close</code>
 is that it closes the output stream. A closed stream cannot perform
 output operations and cannot be reopened.
 <p>
 The <code>close</code> method of <code>OutputStream</code> does nothing.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/Closeable.html?is-external=true#close()" title="class or interface in java.io">close</A></CODE> in interface <CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/Closeable.html?is-external=true" title="class or interface in java.io">Closeable</A></CODE><DT><B>Overrides:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/OutputStream.html?is-external=true#close()" title="class or interface in java.io">close</A></CODE> in class <CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE> - if an I/O error occurs.</DL>
</DD>
</DL>
<HR>

<A NAME="flush()"><!-- --></A><H3>
flush</H3>
<PRE>
public void <B>flush</B>()
           throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD>Flushes this output stream and forces any buffered output bytes
 to be written out. The general contract of <code>flush</code> is
 that calling it is an indication that, if any bytes previously
 written have been buffered by the implementation of the output
 stream, such bytes should immediately be written to their
 intended destination.
 <p>
 The <code>flush</code> method of <code>OutputStream</code> does nothing.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/Flushable.html?is-external=true#flush()" title="class or interface in java.io">flush</A></CODE> in interface <CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/Flushable.html?is-external=true" title="class or interface in java.io">Flushable</A></CODE><DT><B>Overrides:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/OutputStream.html?is-external=true#flush()" title="class or interface in java.io">flush</A></CODE> in class <CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE> - if an I/O error occurs.</DL>
</DD>
</DL>
<HR>

<A NAME="write(byte[])"><!-- --></A><H3>
write</H3>
<PRE>
public void <B>write</B>(byte[]&nbsp;b)
           throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD>Writes <code>b.length</code> bytes from the specified byte array
 to this output stream. The general contract for <code>write(b)</code>
 is that it should have exactly the same effect as the call
 <code>write(b, 0, b.length)</code>.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/OutputStream.html?is-external=true#write(byte[])" title="class or interface in java.io">write</A></CODE> in class <CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>b</CODE> - the data.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE> - if an I/O error occurs.<DT><B>See Also:</B><DD><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/OutputStream.html?is-external=true#write(byte[], int, int)" title="class or interface in java.io"><CODE>OutputStream.write(byte[], int, int)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="write(int)"><!-- --></A><H3>
write</H3>
<PRE>
public void <B>write</B>(int&nbsp;b)
           throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD>Writes the specified byte to this output stream. The general
 contract for <code>write</code> is that one byte is written
 to the output stream. The byte to be written is the eight
 low-order bits of the argument <code>b</code>. The 24
 high-order bits of <code>b</code> are ignored.
 <p>
 Subclasses of <code>OutputStream</code> must provide an
 implementation for this method.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/OutputStream.html?is-external=true#write(int)" title="class or interface in java.io">write</A></CODE> in class <CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>b</CODE> - the <code>byte</code>.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE> - if an I/O error occurs. In particular,
             an <code>IOException</code> may be thrown if the
             output stream has been closed.</DL>
</DD>
</DL>
<HR>

<A NAME="write(byte[], int, int)"><!-- --></A><H3>
write</H3>
<PRE>
public void <B>write</B>(byte[]&nbsp;b,
                  int&nbsp;off,
                  int&nbsp;len)
           throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD>Writes <code>len</code> bytes from the specified byte array
 starting at offset <code>off</code> to this output stream.
 The general contract for <code>write(b, off, len)</code> is that
 some of the bytes in the array <code>b</code> are written to the
 output stream in order; element <code>b[off]</code> is the first
 byte written and <code>b[off+len-1]</code> is the last byte written
 by this operation.
 <p>
 The <code>write</code> method of <code>OutputStream</code> calls
 the write method of one argument on each of the bytes to be
 written out. Subclasses are encouraged to override this method and
 provide a more efficient implementation.
 <p>
 If <code>b</code> is <code>null</code>, a
 <code>NullPointerException</code> is thrown.
 <p>
 If <code>off</code> is negative, or <code>len</code> is negative, or
 <code>off+len</code> is greater than the length of the array
 <code>b</code>, then an <tt>IndexOutOfBoundsException</tt> is thrown.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/OutputStream.html?is-external=true#write(byte[], int, int)" title="class or interface in java.io">write</A></CODE> in class <CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>b</CODE> - the data.<DD><CODE>off</CODE> - the start offset in the data.<DD><CODE>len</CODE> - the number of bytes to write.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE> - if an I/O error occurs. In particular,
             an <code>IOException</code> is thrown if the output
             stream is closed.</DL>
</DD>
</DL>
<HR>

<A NAME="finish()"><!-- --></A><H3>
finish</H3>
<PRE>
public void <B>finish</B>()
            throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL>
</DD>
</DL>
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