dsakey.html

JAVA CARD 开发包规格说明,版本为2.2.2

 The plain text data format is big-endian and right-aligned (the least significant bit is the least significant
 bit of last byte). Input prime parameter data is copied into the internal representation.
 <p>Note:<ul>
 <li><em>If the key object implements the </em><code>javacardx.crypto.KeyEncryption</code><em>
 interface and the </em><code>Cipher</code><em> object specified via </em><code>setKeyCipher()</code><em>
 is not </em><code>null</code><em>, the prime parameter value is decrypted using the </em><code>Cipher</code><em> object.</em>
 </ul>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>buffer</CODE> - the input buffer<DD><CODE>offset</CODE> - the offset into the input buffer at which the prime parameter value begins<DD><CODE>length</CODE> - the length of the prime parameter value
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../javacard/security/CryptoException.html" title="class in javacard.security">CryptoException</A></CODE> - with the following reason code:<ul>
 <li><code>CryptoException.ILLEGAL_VALUE</code> if the input parameter data length is inconsistent
 with the implementation or if input data decryption is required and fails.
 </ul></DL>
</DD>
</DL>
<HR>

<A NAME="setQ(byte[], short, short)"><!-- --></A><H3>
setQ</H3>
<PRE>
void <B>setQ</B>(byte[]&nbsp;buffer,
          short&nbsp;offset,
          short&nbsp;length)
          throws <A HREF="../../javacard/security/CryptoException.html" title="class in javacard.security">CryptoException</A></PRE>
<DL>
<DD>Sets the subprime parameter value of the key.
 The plain text data format is big-endian and right-aligned (the least significant bit is the least significant
 bit of last byte). Input subprime parameter data is copied into the internal representation.
 <p>Note:<ul>
 <li><em>If the key object implements the </em><code>javacardx.crypto.KeyEncryption</code><em>
 interface and the </em><code>Cipher</code><em> object specified via </em><code>setKeyCipher()</code><em>
 is not </em><code>null</code><em>, the subprime parameter value is decrypted using the </em><code>Cipher</code><em> object.</em>
 </ul>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>buffer</CODE> - the input buffer<DD><CODE>offset</CODE> - the offset into the input buffer at which the subprime parameter value begins<DD><CODE>length</CODE> - the length of the subprime parameter value
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../javacard/security/CryptoException.html" title="class in javacard.security">CryptoException</A></CODE> - with the following reason code:<ul>
 <li><code>CryptoException.ILLEGAL_VALUE</code> if the input parameter data length is inconsistent
 with the implementation or if input data decryption is required and fails.
 </ul></DL>
</DD>
</DL>
<HR>

<A NAME="setG(byte[], short, short)"><!-- --></A><H3>
setG</H3>
<PRE>
void <B>setG</B>(byte[]&nbsp;buffer,
          short&nbsp;offset,
          short&nbsp;length)
          throws <A HREF="../../javacard/security/CryptoException.html" title="class in javacard.security">CryptoException</A></PRE>
<DL>
<DD>Sets the base parameter value of the key.
 The plain text data format is big-endian and right-aligned (the least significant bit is the least significant
 bit of last byte). Input base parameter data is copied into the internal representation.
 <p>Note:<ul>
 <li><em>If the key object implements the </em><code>javacardx.crypto.KeyEncryption</code><em>
 interface and the </em><code>Cipher</code><em> object specified via </em><code>setKeyCipher()</code><em>
 is not </em><code>null</code><em>, the base parameter value is decrypted using the </em><code>Cipher</code><em> object.</em>
 </ul>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>buffer</CODE> - the input buffer<DD><CODE>offset</CODE> - the offset into the input buffer at which the base parameter value begins<DD><CODE>length</CODE> - the length of the base parameter value
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../javacard/security/CryptoException.html" title="class in javacard.security">CryptoException</A></CODE> - with the following reason code:<ul>
 <li><code>CryptoException.ILLEGAL_VALUE</code> if the input parameter data length is inconsistent
 with the implementation or if input data decryption is required and fails.
 </ul></DL>
</DD>
</DL>
<HR>

<A NAME="getP(byte[], short)"><!-- --></A><H3>
getP</H3>
<PRE>
short <B>getP</B>(byte[]&nbsp;buffer,
           short&nbsp;offset)</PRE>
<DL>
<DD>Returns the prime parameter value of the key in plain text.
 The data format is big-endian and right-aligned (the least significant bit is the least significant
 bit of last byte).
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>buffer</CODE> - the output buffer<DD><CODE>offset</CODE> - the offset into the output buffer at which the prime parameter value starts
<DT><B>Returns:</B><DD>the byte length of the prime parameter value returned
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../javacard/security/CryptoException.html" title="class in javacard.security">CryptoException</A></CODE> - with the following reason code:<ul>
 <li><code>CryptoException.UNINITIALIZED_KEY</code> if the prime parameter has not been
 successfully initialized since the
 time the initialized state of the key was set to false.
 </ul><DT><B>See Also:</B><DD><A HREF="../../javacard/security/Key.html" title="interface in javacard.security"><CODE>Key</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getQ(byte[], short)"><!-- --></A><H3>
getQ</H3>
<PRE>
short <B>getQ</B>(byte[]&nbsp;buffer,
           short&nbsp;offset)</PRE>
<DL>
<DD>Returns the subprime parameter value of the key in plain text.
 The data format is big-endian and right-aligned (the least significant bit is the least significant
 bit of last byte).
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>buffer</CODE> - the output buffer<DD><CODE>offset</CODE> - the offset into the output buffer at which the subprime parameter value begins
<DT><B>Returns:</B><DD>the byte length of the subprime parameter value returned
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../javacard/security/CryptoException.html" title="class in javacard.security">CryptoException</A></CODE> - with the following reason code:<ul>
 <li><code>CryptoException.UNINITIALIZED_KEY</code> if the subprime parameter has not been
 successfully initialized since the
 time the initialized state of the key was set to false.
 </ul><DT><B>See Also:</B><DD><A HREF="../../javacard/security/Key.html" title="interface in javacard.security"><CODE>Key</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getG(byte[], short)"><!-- --></A><H3>
getG</H3>
<PRE>
short <B>getG</B>(byte[]&nbsp;buffer,
           short&nbsp;offset)</PRE>
<DL>
<DD>Returns the base parameter value of the key in plain text.
 The data format is big-endian and right-aligned (the least significant bit is the least significant
 bit of last byte).
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>buffer</CODE> - the output buffer<DD><CODE>offset</CODE> - the offset into the output buffer at which the base parameter value begins
<DT><B>Returns:</B><DD>the byte length of the base parameter value returned
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../javacard/security/CryptoException.html" title="class in javacard.security">CryptoException</A></CODE> - with the following reason code:<ul>
 <li><code>CryptoException.UNINITIALIZED_KEY</code> if the base parameter has not been
 successfully initialized since the
 time the initialized state of the key was set to false.
 </ul><DT><B>See Also:</B><DD><A HREF="../../javacard/security/Key.html" title="interface in javacard.security"><CODE>Key</CODE></A></DL>
</DD>
</DL>
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