algorithmparameters.html

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<A NAME="AlgorithmParameters(java.security.AlgorithmParametersSpi, java.security.Provider, java.lang.String)"><!-- --></A><H3>
AlgorithmParameters</H3>
<PRE>
protected <B>AlgorithmParameters</B>(<A HREF="../../java/security/AlgorithmParametersSpi.html">AlgorithmParametersSpi</A>&nbsp;paramSpi,
                              <A HREF="../../java/security/Provider.html">Provider</A>&nbsp;provider,
                              <A HREF="../../java/lang/String.html">String</A>&nbsp;algorithm)</PRE>
<DL>
<DD>Creates an AlgorithmParameters object.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>paramSpi</CODE> - the delegate<DD><CODE>provider</CODE> - the provider<DD><CODE>algorithm</CODE> - the algorithm</DL>
</DD>
</DL>

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<A NAME="getAlgorithm()"><!-- --></A><H3>
getAlgorithm</H3>
<PRE>
public final <A HREF="../../java/lang/String.html">String</A> <B>getAlgorithm</B>()</PRE>
<DL>
<DD>Returns the name of the algorithm associated with this parameter object.<DD><DL>
<DT><B>Returns:</B><DD>the algorithm name.</DL>
</DD>
</DL>
<HR>

<A NAME="getInstance(java.lang.String)"><!-- --></A><H3>
getInstance</H3>
<PRE>
public static <A HREF="../../java/security/AlgorithmParameters.html">AlgorithmParameters</A> <B>getInstance</B>(<A HREF="../../java/lang/String.html">String</A>&nbsp;algorithm)
                                       throws <A HREF="../../java/security/NoSuchAlgorithmException.html">NoSuchAlgorithmException</A></PRE>
<DL>
<DD>Generates a parameter object for the specified algorithm.

 <p>If the default provider package provides an implementation of the
 requested algorithm, an instance of AlgorithmParameters containing that
 implementation is returned.
 If the algorithm is not available in the default 
 package, other packages are searched.

 <p>The returned parameter object must be initialized via a call to
 <code>init</code>, using an appropriate parameter specification or
 parameter encoding.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>algorithm</CODE> - the name of the algorithm requested.<DT><B>Returns:</B><DD>the new parameter object.<DT><B>Throws:</B><DD><CODE><A HREF="../../java/security/NoSuchAlgorithmException.html">NoSuchAlgorithmException</A></CODE> - if the algorithm is
 not available in the environment.</DL>
</DD>
</DL>
<HR>

<A NAME="getInstance(java.lang.String, java.lang.String)"><!-- --></A><H3>
getInstance</H3>
<PRE>
public static <A HREF="../../java/security/AlgorithmParameters.html">AlgorithmParameters</A> <B>getInstance</B>(<A HREF="../../java/lang/String.html">String</A>&nbsp;algorithm,
                                              <A HREF="../../java/lang/String.html">String</A>&nbsp;provider)
                                       throws <A HREF="../../java/security/NoSuchAlgorithmException.html">NoSuchAlgorithmException</A>,
                                              <A HREF="../../java/security/NoSuchProviderException.html">NoSuchProviderException</A></PRE>
<DL>
<DD>Generates a parameter object for the specified algorithm, as supplied
 by the specified provider, if such an algorithm is available from the
 provider.

 <p>The returned parameter object must be initialized via a call to
 <code>init</code>, using an appropriate parameter specification or
 parameter encoding.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>algorithm</CODE> - the name of the algorithm requested.<DD><CODE>provider</CODE> - the name of the provider.<DT><B>Returns:</B><DD>the new parameter object.<DT><B>Throws:</B><DD><CODE><A HREF="../../java/security/NoSuchAlgorithmException.html">NoSuchAlgorithmException</A></CODE> - if the algorithm is
 not available in the package supplied by the requested
 provider.<DD><CODE><A HREF="../../java/security/NoSuchProviderException.html">NoSuchProviderException</A></CODE> - if the provider is not
 available in the environment.<DT><B>See Also: </B><DD><A HREF="../../java/security/Provider.html"><CODE>Provider</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getProvider()"><!-- --></A><H3>
getProvider</H3>
<PRE>
public final <A HREF="../../java/security/Provider.html">Provider</A> <B>getProvider</B>()</PRE>
<DL>
<DD>Returns the provider of this parameter object.<DD><DL>
<DT><B>Returns:</B><DD>the provider of this parameter object</DL>
</DD>
</DL>
<HR>

<A NAME="init(java.security.spec.AlgorithmParameterSpec)"><!-- --></A><H3>
init</H3>
<PRE>
public final void <B>init</B>(<A HREF="../../java/security/spec/AlgorithmParameterSpec.html">AlgorithmParameterSpec</A>&nbsp;paramSpec)
                throws <A HREF="../../java/security/spec/InvalidParameterSpecException.html">InvalidParameterSpecException</A></PRE>
<DL>
<DD>Initializes this parameter object using the parameters 
 specified in <code>paramSpec</code>.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>paramSpec</CODE> - the parameter specification.<DT><B>Throws:</B><DD><CODE><A HREF="../../java/security/spec/InvalidParameterSpecException.html">InvalidParameterSpecException</A></CODE> - if the given parameter
 specification is inappropriate for the initialization of this parameter
 object, or if this parameter object has already been initialized.</DL>
</DD>
</DL>
<HR>

<A NAME="init(byte[])"><!-- --></A><H3>
init</H3>
<PRE>
public final void <B>init</B>(byte[]&nbsp;params)
                throws <A HREF="../../java/io/IOException.html">IOException</A></PRE>
<DL>
<DD>Imports the specified parameters and decodes them according to the 
 primary decoding format for parameters. The primary decoding
 format for parameters is ASN.1, if an ASN.1 specification for this type
 of parameters exists.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>params</CODE> - the encoded parameters.<DT><B>Throws:</B><DD><CODE><A HREF="../../java/io/IOException.html">IOException</A></CODE> - on decoding errors, or if this parameter object
 has already been initialized.</DL>
</DD>
</DL>
<HR>

<A NAME="init(byte[], java.lang.String)"><!-- --></A><H3>
init</H3>
<PRE>
public final void <B>init</B>(byte[]&nbsp;params,
                       <A HREF="../../java/lang/String.html">String</A>&nbsp;format)
                throws <A HREF="../../java/io/IOException.html">IOException</A></PRE>
<DL>
<DD>Imports the parameters from <code>params</code> and decodes them 
 according to the specified decoding scheme.
 If <code>format</code> is null, the
 primary decoding format for parameters is used. The primary decoding
 format is ASN.1, if an ASN.1 specification for these parameters
 exists.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>params</CODE> - the encoded parameters.<DD><CODE>format</CODE> - the name of the decoding scheme.<DT><B>Throws:</B><DD><CODE><A HREF="../../java/io/IOException.html">IOException</A></CODE> - on decoding errors, or if this parameter object
 has already been initialized.</DL>
</DD>
</DL>
<HR>

<A NAME="getParameterSpec(java.lang.Class)"><!-- --></A><H3>
getParameterSpec</H3>
<PRE>
public final <A HREF="../../java/security/spec/AlgorithmParameterSpec.html">AlgorithmParameterSpec</A> <B>getParameterSpec</B>(<A HREF="../../java/lang/Class.html">Class</A>&nbsp;paramSpec)
                                              throws <A HREF="../../java/security/spec/InvalidParameterSpecException.html">InvalidParameterSpecException</A></PRE>
<DL>
<DD>Returns a (transparent) specification of this parameter object.
 <code>paramSpec</code> identifies the specification class in which 
 the parameters should be returned. It could, for example, be
 <code>DSAParameterSpec.class</code>, to indicate that the
 parameters should be returned in an instance of the 
 <code>DSAParameterSpec</code> class.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>paramSpec</CODE> - the specification class in which 
 the parameters should be returned.<DT><B>Returns:</B><DD>the parameter specification.<DT><B>Throws:</B><DD><CODE><A HREF="../../java/security/spec/InvalidParameterSpecException.html">InvalidParameterSpecException</A></CODE> - if the requested parameter
 specification is inappropriate for this parameter object, or if this
 parameter object has not been initialized.</DL>
</DD>
</DL>
<HR>

<A NAME="getEncoded()"><!-- --></A><H3>
getEncoded</H3>
<PRE>
public final byte[] <B>getEncoded</B>()
                        throws <A HREF="../../java/io/IOException.html">IOException</A></PRE>
<DL>
<DD>Returns the parameters in their primary encoding format.
 The primary encoding format for parameters is ASN.1, if an ASN.1
 specification for this type of parameters exists.<DD><DL>
<DT><B>Returns:</B><DD>the parameters encoded using their primary encoding format.<DT><B>Throws:</B><DD><CODE><A HREF="../../java/io/IOException.html">IOException</A></CODE> - on encoding errors, or if this parameter object
 has not been initialized.</DL>
</DD>
</DL>
<HR>

<A NAME="getEncoded(java.lang.String)"><!-- --></A><H3>
getEncoded</H3>
<PRE>
public final byte[] <B>getEncoded</B>(<A HREF="../../java/lang/String.html">String</A>&nbsp;format)
                        throws <A HREF="../../java/io/IOException.html">IOException</A></PRE>
<DL>
<DD>Returns the parameters encoded in the specified scheme.
 If <code>format</code> is null, the
 primary encoding format for parameters is used. The primary encoding
 format is ASN.1, if an ASN.1 specification for these parameters
 exists.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>format</CODE> - the name of the encoding format.<DT><B>Returns:</B><DD>the parameters encoded using the specified encoding scheme.<DT><B>Throws:</B><DD><CODE><A HREF="../../java/io/IOException.html">IOException</A></CODE> - on encoding errors, or if this parameter object
 has not been initialized.</DL>
</DD>
</DL>
<HR>

<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public final <A HREF="../../java/lang/String.html">String</A> <B>toString</B>()</PRE>
<DL>
<DD>Returns a formatted string describing the parameters.<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../java/lang/Object.html#toString()">toString</A></CODE> in class <CODE><A HREF="../../java/lang/Object.html">Object</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>a formatted string describing the parameters, or null if this
 parameter object has not been initialized.</DL>
</DD>
</DL>
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