iso9796d2psssigner.html

java非对称加密的源代码

<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.bouncycastle.crypto.signers.ISO9796d2PSSSigner.TRAILER_IMPLICIT">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="TRAILER_RIPEMD160"><!-- --></A><H3>
TRAILER_RIPEMD160</H3>
<PRE>
public static final int <B>TRAILER_RIPEMD160</B></PRE>
<DL>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.bouncycastle.crypto.signers.ISO9796d2PSSSigner.TRAILER_RIPEMD160">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="TRAILER_RIPEMD128"><!-- --></A><H3>
TRAILER_RIPEMD128</H3>
<PRE>
public static final int <B>TRAILER_RIPEMD128</B></PRE>
<DL>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.bouncycastle.crypto.signers.ISO9796d2PSSSigner.TRAILER_RIPEMD128">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="TRAILER_SHA1"><!-- --></A><H3>
TRAILER_SHA1</H3>
<PRE>
public static final int <B>TRAILER_SHA1</B></PRE>
<DL>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.bouncycastle.crypto.signers.ISO9796d2PSSSigner.TRAILER_SHA1">Constant Field Values</A></DL>
</DL>

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

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<A NAME="ISO9796d2PSSSigner(org.bouncycastle.crypto.AsymmetricBlockCipher, org.bouncycastle.crypto.Digest, int, boolean)"><!-- --></A><H3>
ISO9796d2PSSSigner</H3>
<PRE>
public <B>ISO9796d2PSSSigner</B>(<A HREF="../../../../org/bouncycastle/crypto/AsymmetricBlockCipher.html" title="interface in org.bouncycastle.crypto">AsymmetricBlockCipher</A>&nbsp;cipher,
                          <A HREF="../../../../org/bouncycastle/crypto/Digest.html" title="interface in org.bouncycastle.crypto">Digest</A>&nbsp;digest,
                          int&nbsp;saltLength,
                          boolean&nbsp;implicit)</PRE>
<DL>
<DD>Generate a signer for the with either implicit or explicit trailers
 for ISO9796-2, scheme 2 or 3.
<P>
<DL>
<DT><B>Parameters:</B><DD><CODE>cipher</CODE> - base cipher to use for signature creation/verification<DD><CODE>digest</CODE> - digest to use.<DD><CODE>saltLength</CODE> - length of salt in bytes.<DD><CODE>implicit</CODE> - whether or not the trailer is implicit or gives the hash.</DL>
</DL>
<HR>

<A NAME="ISO9796d2PSSSigner(org.bouncycastle.crypto.AsymmetricBlockCipher, org.bouncycastle.crypto.Digest, int)"><!-- --></A><H3>
ISO9796d2PSSSigner</H3>
<PRE>
public <B>ISO9796d2PSSSigner</B>(<A HREF="../../../../org/bouncycastle/crypto/AsymmetricBlockCipher.html" title="interface in org.bouncycastle.crypto">AsymmetricBlockCipher</A>&nbsp;cipher,
                          <A HREF="../../../../org/bouncycastle/crypto/Digest.html" title="interface in org.bouncycastle.crypto">Digest</A>&nbsp;digest,
                          int&nbsp;saltLength)</PRE>
<DL>
<DD>Constructor for a signer with an explicit digest trailer.
<P>
<DL>
<DT><B>Parameters:</B><DD><CODE>cipher</CODE> - cipher to use.<DD><CODE>digest</CODE> - digest to sign with.<DD><CODE>saltLength</CODE> - length of salt in bytes.</DL>
</DL>

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

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<A NAME="init(boolean, org.bouncycastle.crypto.CipherParameters)"><!-- --></A><H3>
init</H3>
<PRE>
public void <B>init</B>(boolean&nbsp;forSigning,
                 <A HREF="../../../../org/bouncycastle/crypto/CipherParameters.html" title="interface in org.bouncycastle.crypto">CipherParameters</A>&nbsp;param)</PRE>
<DL>
<DD>Initialise the signer.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/Signer.html#init(boolean, org.bouncycastle.crypto.CipherParameters)">init</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/Signer.html" title="interface in org.bouncycastle.crypto">Signer</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>forSigning</CODE> - true if for signing, false if for verification.<DD><CODE>param</CODE> - parameters for signature generation/verification. If the
 parameters are for generation they should be a ParametersWithRandom,
 a ParametersWithSalt, or just an RSAKeyParameters object. If RSAKeyParameters
 are passed in a SecureRandom will be created.
<DT><B>Throws:</B>
<DD><CODE>java.lang.IllegalArgumentException</CODE> - if wrong parameter type or a fixed 
 salt is passed in which is the wrong length.</DL>
</DD>
</DL>
<HR>

<A NAME="update(byte)"><!-- --></A><H3>
update</H3>
<PRE>
public void <B>update</B>(byte&nbsp;b)</PRE>
<DL>
<DD>update the internal digest with the byte b
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/Signer.html#update(byte)">update</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/Signer.html" title="interface in org.bouncycastle.crypto">Signer</A></CODE></DL>
</DD>
<DD><DL>
</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;off,
                   int&nbsp;len)</PRE>
<DL>
<DD>update the internal digest with the byte array in
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/Signer.html#update(byte[], int, int)">update</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/Signer.html" title="interface in org.bouncycastle.crypto">Signer</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

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

<A NAME="generateSignature()"><!-- --></A><H3>
generateSignature</H3>
<PRE>
public byte[] <B>generateSignature</B>()
                         throws <A HREF="../../../../org/bouncycastle/crypto/CryptoException.html" title="class in org.bouncycastle.crypto">CryptoException</A></PRE>
<DL>
<DD>generate a signature for the loaded message using the key we were
 initialised with.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/Signer.html#generateSignature()">generateSignature</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/Signer.html" title="interface in org.bouncycastle.crypto">Signer</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../org/bouncycastle/crypto/CryptoException.html" title="class in org.bouncycastle.crypto">CryptoException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="verifySignature(byte[])"><!-- --></A><H3>
verifySignature</H3>
<PRE>
public boolean <B>verifySignature</B>(byte[]&nbsp;signature)</PRE>
<DL>
<DD>return true if the signature represents a ISO9796-2 signature
 for the passed in message.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/Signer.html#verifySignature(byte[])">verifySignature</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/Signer.html" title="interface in org.bouncycastle.crypto">Signer</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="hasFullMessage()"><!-- --></A><H3>
hasFullMessage</H3>
<PRE>
public boolean <B>hasFullMessage</B>()</PRE>
<DL>
<DD>Return true if the full message was recoveredMessage.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/SignerWithRecovery.html#hasFullMessage()">hasFullMessage</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/SignerWithRecovery.html" title="interface in org.bouncycastle.crypto">SignerWithRecovery</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>true on full message recovery, false otherwise, or if not sure.<DT><B>See Also:</B><DD><A HREF="../../../../org/bouncycastle/crypto/SignerWithRecovery.html#hasFullMessage()"><CODE>SignerWithRecovery.hasFullMessage()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getRecoveredMessage()"><!-- --></A><H3>
getRecoveredMessage</H3>
<PRE>
public byte[] <B>getRecoveredMessage</B>()</PRE>
<DL>
<DD>Return a reference to the recoveredMessage message.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/SignerWithRecovery.html#getRecoveredMessage()">getRecoveredMessage</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/SignerWithRecovery.html" title="interface in org.bouncycastle.crypto">SignerWithRecovery</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the full/partial recoveredMessage message.<DT><B>See Also:</B><DD><A HREF="../../../../org/bouncycastle/crypto/SignerWithRecovery.html#getRecoveredMessage()"><CODE>SignerWithRecovery.getRecoveredMessage()</CODE></A></DL>
</DD>
</DL>
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