hmac.html

java非对称加密的源代码

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<A NAME="HMac(org.bouncycastle.crypto.Digest)"><!-- --></A><H3>
HMac</H3>
<PRE>
public <B>HMac</B>(<A HREF="../../../../org/bouncycastle/crypto/Digest.html" title="interface in org.bouncycastle.crypto">Digest</A>&nbsp;digest)</PRE>
<DL>
<DD>Base constructor for one of the standard digest algorithms that the 
 byteLength of the algorithm is know for.
<P>
<DL>
<DT><B>Parameters:</B><DD><CODE>digest</CODE> - the digest.</DL>
</DL>

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<A NAME="getAlgorithmName()"><!-- --></A><H3>
getAlgorithmName</H3>
<PRE>
public java.lang.String <B>getAlgorithmName</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html#getAlgorithmName()">Mac</A></CODE></B></DD>
<DD>Return the name of the algorithm the MAC implements.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html#getAlgorithmName()">getAlgorithmName</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html" title="interface in org.bouncycastle.crypto">Mac</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the name of the algorithm the MAC implements.</DL>
</DD>
</DL>
<HR>

<A NAME="getUnderlyingDigest()"><!-- --></A><H3>
getUnderlyingDigest</H3>
<PRE>
public <A HREF="../../../../org/bouncycastle/crypto/Digest.html" title="interface in org.bouncycastle.crypto">Digest</A> <B>getUnderlyingDigest</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
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<A NAME="init(org.bouncycastle.crypto.CipherParameters)"><!-- --></A><H3>
init</H3>
<PRE>
public void <B>init</B>(<A HREF="../../../../org/bouncycastle/crypto/CipherParameters.html" title="interface in org.bouncycastle.crypto">CipherParameters</A>&nbsp;params)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html#init(org.bouncycastle.crypto.CipherParameters)">Mac</A></CODE></B></DD>
<DD>Initialise the MAC.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html#init(org.bouncycastle.crypto.CipherParameters)">init</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html" title="interface in org.bouncycastle.crypto">Mac</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>params</CODE> - the key and other data required by the MAC.</DL>
</DD>
</DL>
<HR>

<A NAME="getMacSize()"><!-- --></A><H3>
getMacSize</H3>
<PRE>
public int <B>getMacSize</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html#getMacSize()">Mac</A></CODE></B></DD>
<DD>Return the block size for this MAC (in bytes).
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html#getMacSize()">getMacSize</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html" title="interface in org.bouncycastle.crypto">Mac</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the block size for this MAC in bytes.</DL>
</DD>
</DL>
<HR>

<A NAME="update(byte)"><!-- --></A><H3>
update</H3>
<PRE>
public void <B>update</B>(byte&nbsp;in)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html#update(byte)">Mac</A></CODE></B></DD>
<DD>add a single byte to the mac for processing.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html#update(byte)">update</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html" title="interface in org.bouncycastle.crypto">Mac</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>in</CODE> - the byte to be processed.</DL>
</DD>
</DL>
<HR>

<A NAME="update(byte[], int, int)"><!-- --></A><H3>
update</H3>
<PRE>
public void <B>update</B>(byte[]&nbsp;in,
                   int&nbsp;inOff,
                   int&nbsp;len)</PRE>
<DL>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html#update(byte[], int, int)">update</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html" title="interface in org.bouncycastle.crypto">Mac</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>in</CODE> - the array containing the input.<DD><CODE>inOff</CODE> - the index in the array the data begins at.<DD><CODE>len</CODE> - the length of the input starting at inOff.</DL>
</DD>
</DL>
<HR>

<A NAME="doFinal(byte[], int)"><!-- --></A><H3>
doFinal</H3>
<PRE>
public int <B>doFinal</B>(byte[]&nbsp;out,
                   int&nbsp;outOff)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html#doFinal(byte[], int)">Mac</A></CODE></B></DD>
<DD>Compute the final statge of the MAC writing the output to the out
 parameter.
 <p>
 doFinal leaves the MAC in the same state it was after the last init.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html#doFinal(byte[], int)">doFinal</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html" title="interface in org.bouncycastle.crypto">Mac</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>out</CODE> - the array the MAC is to be output to.<DD><CODE>outOff</CODE> - the offset into the out buffer the output is to start at.</DL>
</DD>
</DL>
<HR>

<A NAME="reset()"><!-- --></A><H3>
reset</H3>
<PRE>
public void <B>reset</B>()</PRE>
<DL>
<DD>Reset the mac generator.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html#reset()">reset</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html" title="interface in org.bouncycastle.crypto">Mac</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
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