messagedigest.html

JAVA CARD 开发包规格说明,版本为2.2.2

<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
<B>Method Summary</B></FONT></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract &nbsp;short</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javacard/security/MessageDigest.html#doFinal(byte[], short, short, byte[], short)">doFinal</A></B>(byte[]&nbsp;inBuff,
        short&nbsp;inOffset,
        short&nbsp;inLength,
        byte[]&nbsp;outBuff,
        short&nbsp;outOffset)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Generates a hash of all/last input data.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract &nbsp;byte</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javacard/security/MessageDigest.html#getAlgorithm()">getAlgorithm</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the Message digest algorithm.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;<A HREF="../../javacard/security/InitializedMessageDigest.html" title="class in javacard.security">InitializedMessageDigest</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javacard/security/MessageDigest.html#getInitializedMessageDigestInstance(byte, boolean)">getInitializedMessageDigestInstance</A></B>(byte&nbsp;algorithm,
                                    boolean&nbsp;externalAccess)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Creates a <code>InitializedMessageDigest</code> object instance of the selected algorithm.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;<A HREF="../../javacard/security/MessageDigest.html" title="class in javacard.security">MessageDigest</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javacard/security/MessageDigest.html#getInstance(byte, boolean)">getInstance</A></B>(byte&nbsp;algorithm,
            boolean&nbsp;externalAccess)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Creates a <code>MessageDigest</code> object instance of the selected algorithm.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract &nbsp;byte</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javacard/security/MessageDigest.html#getLength()">getLength</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the byte length of the hash.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract &nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javacard/security/MessageDigest.html#reset()">reset</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Resets the <code>MessageDigest</code> object to the initial state for further use.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract &nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javacard/security/MessageDigest.html#update(byte[], short, short)">update</A></B>(byte[]&nbsp;inBuff,
       short&nbsp;inOffset,
       short&nbsp;inLength)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Accumulates a hash of the input data.</TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="../../java/lang/Object.html" title="class in java.lang">Object</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../java/lang/Object.html#equals(java.lang.Object)">equals</A></CODE></TD>
</TR>
</TABLE>
&nbsp;
<P>

<!-- ============ FIELD DETAIL =========== -->

<A NAME="field_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
<B>Field Detail</B></FONT></TH>
</TR>
</TABLE>

<A NAME="ALG_SHA"><!-- --></A><H3>
ALG_SHA</H3>
<PRE>
public static final byte <B>ALG_SHA</B></PRE>
<DL>
<DD>Message Digest algorithm SHA.
 The block size used by this algorithm is 64 bytes.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../constant-values.html#javacard.security.MessageDigest.ALG_SHA">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="ALG_MD5"><!-- --></A><H3>
ALG_MD5</H3>
<PRE>
public static final byte <B>ALG_MD5</B></PRE>
<DL>
<DD>Message Digest algorithm MD5.
 The block size used by this algorithm is 64 bytes.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../constant-values.html#javacard.security.MessageDigest.ALG_MD5">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="ALG_RIPEMD160"><!-- --></A><H3>
ALG_RIPEMD160</H3>
<PRE>
public static final byte <B>ALG_RIPEMD160</B></PRE>
<DL>
<DD>Message Digest algorithm RIPE MD-160.
 The block size used by this algorithm is 64 bytes.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../constant-values.html#javacard.security.MessageDigest.ALG_RIPEMD160">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="ALG_SHA_256"><!-- --></A><H3>
ALG_SHA_256</H3>
<PRE>
public static final byte <B>ALG_SHA_256</B></PRE>
<DL>
<DD>Message Digest algorithm SHA-256.
 The block size used by this algorithm is 64 bytes.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../constant-values.html#javacard.security.MessageDigest.ALG_SHA_256">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="ALG_SHA_384"><!-- --></A><H3>
ALG_SHA_384</H3>
<PRE>
public static final byte <B>ALG_SHA_384</B></PRE>
<DL>
<DD>Message Digest algorithm SHA-384.
 The block size used by this algorithm is 128 bytes.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../constant-values.html#javacard.security.MessageDigest.ALG_SHA_384">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="ALG_SHA_512"><!-- --></A><H3>
ALG_SHA_512</H3>
<PRE>
public static final byte <B>ALG_SHA_512</B></PRE>
<DL>
<DD>Message Digest algorithm SHA-512.
 The block size used by this algorithm is 128 bytes.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../constant-values.html#javacard.security.MessageDigest.ALG_SHA_512">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="LENGTH_MD5"><!-- --></A><H3>
LENGTH_MD5</H3>
<PRE>
public static final byte <B>LENGTH_MD5</B></PRE>
<DL>
<DD>Length of digest in bytes for SHA
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../constant-values.html#javacard.security.MessageDigest.LENGTH_MD5">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="LENGTH_RIPEMD160"><!-- --></A><H3>
LENGTH_RIPEMD160</H3>
<PRE>
public static final byte <B>LENGTH_RIPEMD160</B></PRE>
<DL>
<DD>Length of digest in bytes for RIPE MD-160
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../constant-values.html#javacard.security.MessageDigest.LENGTH_RIPEMD160">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="LENGTH_SHA"><!-- --></A><H3>
LENGTH_SHA</H3>
<PRE>
public static final byte <B>LENGTH_SHA</B></PRE>
<DL>
<DD>Length of digest in bytes for SHA-256
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../constant-values.html#javacard.security.MessageDigest.LENGTH_SHA">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="LENGTH_SHA_256"><!-- --></A><H3>
LENGTH_SHA_256</H3>
<PRE>
public static final byte <B>LENGTH_SHA_256</B></PRE>
<DL>
<DD>Length of digest in bytes for MD5
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../constant-values.html#javacard.security.MessageDigest.LENGTH_SHA_256">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="LENGTH_SHA_384"><!-- --></A><H3>
LENGTH_SHA_384</H3>
<PRE>
public static final byte <B>LENGTH_SHA_384</B></PRE>
<DL>
<DD>Length of digest in bytes for SHA-384
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../constant-values.html#javacard.security.MessageDigest.LENGTH_SHA_384">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="LENGTH_SHA_512"><!-- --></A><H3>
LENGTH_SHA_512</H3>
<PRE>
public static final byte <B>LENGTH_SHA_512</B></PRE>
<DL>
<DD>Length of digest in bytes for SHA-512
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../constant-values.html#javacard.security.MessageDigest.LENGTH_SHA_512">Constant Field Values</A></DL>
</DL>

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