ecprivatekey.html

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<TH ALIGN="left"><B>Methods inherited from interface javacard.security.<A HREF="../../javacard/security/Key.html" title="interface in javacard.security">Key</A></B></TH>
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<TD><CODE><A HREF="../../javacard/security/Key.html#clearKey()">clearKey</A>, <A HREF="../../javacard/security/Key.html#getSize()">getSize</A>, <A HREF="../../javacard/security/Key.html#getType()">getType</A>, <A HREF="../../javacard/security/Key.html#isInitialized()">isInitialized</A></CODE></TD>
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<TH ALIGN="left"><B>Methods inherited from interface javacard.security.<A HREF="../../javacard/security/ECKey.html" title="interface in javacard.security">ECKey</A></B></TH>
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<TD><CODE><A HREF="../../javacard/security/ECKey.html#getA(byte[], short)">getA</A>, <A HREF="../../javacard/security/ECKey.html#getB(byte[], short)">getB</A>, <A HREF="../../javacard/security/ECKey.html#getField(byte[], short)">getField</A>, <A HREF="../../javacard/security/ECKey.html#getG(byte[], short)">getG</A>, <A HREF="../../javacard/security/ECKey.html#getK()">getK</A>, <A HREF="../../javacard/security/ECKey.html#getR(byte[], short)">getR</A>, <A HREF="../../javacard/security/ECKey.html#setA(byte[], short, short)">setA</A>, <A HREF="../../javacard/security/ECKey.html#setB(byte[], short, short)">setB</A>, <A HREF="../../javacard/security/ECKey.html#setFieldF2M(short)">setFieldF2M</A>, <A HREF="../../javacard/security/ECKey.html#setFieldF2M(short, short, short)">setFieldF2M</A>, <A HREF="../../javacard/security/ECKey.html#setFieldFP(byte[], short, short)">setFieldFP</A>, <A HREF="../../javacard/security/ECKey.html#setG(byte[], short, short)">setG</A>, <A HREF="../../javacard/security/ECKey.html#setK(short)">setK</A>, <A HREF="../../javacard/security/ECKey.html#setR(byte[], short, short)">setR</A></CODE></TD>
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<A NAME="setS(byte[], short, short)"><!-- --></A><H3>
setS</H3>
<PRE>
void <B>setS</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 value of the secret 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 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 key value is decrypted using the </em><code>Cipher</code><em> object.</em>
 </ul>
<P>
<DD><DL>
</DL>
</DD>
<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
                  secret value is to begin<DD><CODE>length</CODE> - the byte length of the secret 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 key data is inconsistent
 with the key length or if input data decryption is required and fails.
 </ul></DL>
</DD>
</DL>
<HR>

<A NAME="getS(byte[], short)"><!-- --></A><H3>
getS</H3>
<PRE>
short <B>getS</B>(byte[]&nbsp;buffer,
           short&nbsp;offset)
           throws <A HREF="../../javacard/security/CryptoException.html" title="class in javacard.security">CryptoException</A></PRE>
<DL>
<DD>Returns the value of the secret key in plaintext form.

 The data format is big-endian and right-aligned
 (the least significant bit is the least significant bit of last byte).
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>buffer</CODE> - the output buffer<DD><CODE>offset</CODE> - the offset into the input buffer at which the
                  secret value is to begin
<DT><B>Returns:</B><DD>the byte length of the secret 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.UNINITIALIZED_KEY</code> if the value of the secret key
 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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