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  7. GOST28147Mac (Bouncy Castle Library 1.45 API Specification)
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  51. <b>Bouncy Castle Cryptography Library 1.45</b></EM>
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  57. &nbsp;<A HREF="../../../../org/bouncycastle/crypto/macs/CMac.html" title="class in org.bouncycastle.crypto.macs"><B>PREV CLASS</B></A>&nbsp;
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  58. &nbsp;<A HREF="../../../../org/bouncycastle/crypto/macs/HMac.html" title="class in org.bouncycastle.crypto.macs"><B>NEXT CLASS</B></A></FONT></TD>
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  78.   SUMMARY:&nbsp;NESTED&nbsp;|&nbsp;FIELD&nbsp;|&nbsp;<A HREF="#constructor_summary">CONSTR</A>&nbsp;|&nbsp;<A HREF="#method_summary">METHOD</A></FONT></TD>
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  89. <FONT SIZE="-1">
    90. 

  90. org.bouncycastle.crypto.macs</FONT>
    91. 

  91. <BR>
    92. 

  92. Class GOST28147Mac</H2>
    93. 

  93. <PRE>
    94. 

  94. java.lang.Object
    95. 

  95.   <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.bouncycastle.crypto.macs.GOST28147Mac</B>
    96. 

  96. </PRE>
    97. 

  97. <DL>
    98. 

  98. <DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../org/bouncycastle/crypto/Mac.html" title="interface in org.bouncycastle.crypto">Mac</A></DD>
    99. 

  99. </DL>
    100. 

  100. <HR>
    101. 

  101. <DL>
    102. 

  102. <DT><PRE>public class <B>GOST28147Mac</B><DT>extends java.lang.Object<DT>implements <A HREF="../../../../org/bouncycastle/crypto/Mac.html" title="interface in org.bouncycastle.crypto">Mac</A></DL>
    103. 

  103. </PRE>
    104. 

  104. 

  105. <P>
    106. 

  106. implementation of GOST 28147-89 MAC
    107. 

  107. <P>
    108. 

  108. 

  109. <P>
    110. 

  110. <HR>
    111. 

  111. 

  112. <P>
    113. 

  113. 

  114. <!-- ======== CONSTRUCTOR SUMMARY ======== -->
    115. 

  115. 

  116. <A NAME="constructor_summary"><!-- --></A>
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  117. <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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  118. <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
    119. 

  119. <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
    120. 

  120. <B>Constructor Summary</B></FONT></TH>
    121. 

  121. </TR>
    122. 

  122. <TR BGCOLOR="white" CLASS="TableRowColor">
    123. 

  123. <TD><CODE><B><A HREF="../../../../org/bouncycastle/crypto/macs/GOST28147Mac.html#GOST28147Mac()">GOST28147Mac</A></B>()</CODE>
    124. 

  124. 

  125. <BR>
    126. 

  126. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
    127. 

  127. </TR>
    128. 

  128. </TABLE>
    129. 

  129. &nbsp;
    130. 

  130. <!-- ========== METHOD SUMMARY =========== -->
    131. 

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  135. <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
    136. 

  136. <B>Method Summary</B></FONT></TH>
    137. 

  137. </TR>
    138. 

  138. <TR BGCOLOR="white" CLASS="TableRowColor">
    139. 

  139. <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
    140. 

  140. <CODE>&nbsp;int</CODE></FONT></TD>
    141. 

  141. <TD><CODE><B><A HREF="../../../../org/bouncycastle/crypto/macs/GOST28147Mac.html#doFinal(byte[], int)">doFinal</A></B>(byte[]&nbsp;out,
    142. 

  142.         int&nbsp;outOff)</CODE>
    143. 

  143. 

  144. <BR>
    145. 

  145. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Compute the final stage of the MAC writing the output to the out
    146. 

  146.  parameter.</TD>
    147. 

  147. </TR>
    148. 

  148. <TR BGCOLOR="white" CLASS="TableRowColor">
    149. 

  149. <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
    150. 

  150. <CODE>&nbsp;java.lang.String</CODE></FONT></TD>
    151. 

  151. <TD><CODE><B><A HREF="../../../../org/bouncycastle/crypto/macs/GOST28147Mac.html#getAlgorithmName()">getAlgorithmName</A></B>()</CODE>
    152. 

  152. 

  153. <BR>
    154. 

  154. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Return the name of the algorithm the MAC implements.</TD>
    155. 

  155. </TR>
    156. 

  156. <TR BGCOLOR="white" CLASS="TableRowColor">
    157. 

  157. <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
    158. 

  158. <CODE>&nbsp;int</CODE></FONT></TD>
    159. 

  159. <TD><CODE><B><A HREF="../../../../org/bouncycastle/crypto/macs/GOST28147Mac.html#getMacSize()">getMacSize</A></B>()</CODE>
    160. 

  160. 

  161. <BR>
    162. 

  162. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Return the block size for this MAC (in bytes).</TD>
    163. 

  163. </TR>
    164. 

  164. <TR BGCOLOR="white" CLASS="TableRowColor">
    165. 

  165. <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
    166. 

  166. <CODE>&nbsp;void</CODE></FONT></TD>
    167. 

  167. <TD><CODE><B><A HREF="../../../../org/bouncycastle/crypto/macs/GOST28147Mac.html#init(org.bouncycastle.crypto.CipherParameters)">init</A></B>(<A HREF="../../../../org/bouncycastle/crypto/CipherParameters.html" title="interface in org.bouncycastle.crypto">CipherParameters</A>&nbsp;params)</CODE>
    168. 

  168. 

  169. <BR>
    170. 

  170. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Initialise the MAC.</TD>
    171. 

  171. </TR>
    172. 

  172. <TR BGCOLOR="white" CLASS="TableRowColor">
    173. 

  173. <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
    174. 

  174. <CODE>&nbsp;void</CODE></FONT></TD>
    175. 

  175. <TD><CODE><B><A HREF="../../../../org/bouncycastle/crypto/macs/GOST28147Mac.html#reset()">reset</A></B>()</CODE>
    176. 

  176. 

  177. <BR>
    178. 

  178. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Reset the MAC.</TD>
    179. 

  179. </TR>
    180. 

  180. <TR BGCOLOR="white" CLASS="TableRowColor">
    181. 

  181. <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
    182. 

  182. <CODE>&nbsp;void</CODE></FONT></TD>
    183. 

  183. <TD><CODE><B><A HREF="../../../../org/bouncycastle/crypto/macs/GOST28147Mac.html#update(byte)">update</A></B>(byte&nbsp;in)</CODE>
    184. 

  184. 

  185. <BR>
    186. 

  186. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;add a single byte to the mac for processing.</TD>
    187. 

  187. </TR>
    188. 

  188. <TR BGCOLOR="white" CLASS="TableRowColor">
    189. 

  189. <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
    190. 

  190. <CODE>&nbsp;void</CODE></FONT></TD>
    191. 

  191. <TD><CODE><B><A HREF="../../../../org/bouncycastle/crypto/macs/GOST28147Mac.html#update(byte[], int, int)">update</A></B>(byte[]&nbsp;in,
    192. 

  192.        int&nbsp;inOff,
    193. 

  193.        int&nbsp;len)</CODE>
    194. 

  194. 

  195. <BR>
    196. 

  196. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
    197. 

  197. </TR>
    198. 

  198. </TABLE>
    199. 

  199. &nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
    200. 

  200. <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
    201. 

  201. <TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
    202. 

  202. <TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH>
    203. 

  203. </TR>
    204. 

  204. <TR BGCOLOR="white" CLASS="TableRowColor">
    205. 

  205. <TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
    206. 

  206. </TR>
    207. 

  207. </TABLE>
    208. 

  208. &nbsp;
    209. 

  209. <P>
    210. 

  210. 

  211. <!-- ========= CONSTRUCTOR DETAIL ======== -->
    212. 

  212. 

  213. <A NAME="constructor_detail"><!-- --></A>
    214. 

  214. <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
    215. 

  215. <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
    216. 

  216. <TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
    217. 

  217. <B>Constructor Detail</B></FONT></TH>
    218. 

  218. </TR>
    219. 

  219. </TABLE>
    220. 

  220. 

  221. <A NAME="GOST28147Mac()"><!-- --></A><H3>
    222. 

  222. GOST28147Mac</H3>
    223. 

  223. <PRE>
    224. 

  224. public <B>GOST28147Mac</B>()</PRE>
    225. 

  225. <DL>
    226. 

  226. </DL>
    227. 

  227. 

  228. <!-- ============ METHOD DETAIL ========== -->
    229. 

  229. 

  230. <A NAME="method_detail"><!-- --></A>
    231. 

  231. <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
    232. 

  232. <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
    233. 

  233. <TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
    234. 

  234. <B>Method Detail</B></FONT></TH>
    235. 

  235. </TR>
    236. 

  236. </TABLE>
    237. 

  237. 

  238. <A NAME="init(org.bouncycastle.crypto.CipherParameters)"><!-- --></A><H3>
    239. 

  239. init</H3>
    240. 

  240. <PRE>
    241. 

  241. public void <B>init</B>(<A HREF="../../../../org/bouncycastle/crypto/CipherParameters.html" title="interface in org.bouncycastle.crypto">CipherParameters</A>&nbsp;params)
    242. 

  242.           throws java.lang.IllegalArgumentException</PRE>
    243. 

  243. <DL>
    244. 

  244. <DD><B>Description copied from interface: <CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html#init(org.bouncycastle.crypto.CipherParameters)">Mac</A></CODE></B></DD>
    245. 

  245. <DD>Initialise the MAC.
    246. 

  246. <P>
    247. 

  247. <DD><DL>
    248. 

  248. <DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html#init(org.bouncycastle.crypto.CipherParameters)">init</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html" title="interface in org.bouncycastle.crypto">Mac</A></CODE></DL>
    249. 

  249. </DD>
    250. 

  250. <DD><DL>
    251. 

  251. <DT><B>Parameters:</B><DD><CODE>params</CODE> - the key and other data required by the MAC.
    252. 

  252. <DT><B>Throws:</B>
    253. 

  253. <DD><CODE>java.lang.IllegalArgumentException</CODE> - if the params argument is
    254. 

  254.  inappropriate.</DL>
    255. 

  255. </DD>
    256. 

  256. </DL>
    257. 

  257. <HR>
    258. 

  258. 

  259. <A NAME="getAlgorithmName()"><!-- --></A><H3>
    260. 

  260. getAlgorithmName</H3>
    261. 

  261. <PRE>
    262. 

  262. public java.lang.String <B>getAlgorithmName</B>()</PRE>
    263. 

  263. <DL>
    264. 

  264. <DD><B>Description copied from interface: <CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html#getAlgorithmName()">Mac</A></CODE></B></DD>
    265. 

  265. <DD>Return the name of the algorithm the MAC implements.
    266. 

  266. <P>
    267. 

  267. <DD><DL>
    268. 

  268. <DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html#getAlgorithmName()">getAlgorithmName</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html" title="interface in org.bouncycastle.crypto">Mac</A></CODE></DL>
    269. 

  269. </DD>
    270. 

  270. <DD><DL>
    271. 

  271. 

  272. <DT><B>Returns:</B><DD>the name of the algorithm the MAC implements.</DL>
    273. 

  273. </DD>
    274. 

  274. </DL>
    275. 

  275. <HR>
    276. 

  276. 

  277. <A NAME="getMacSize()"><!-- --></A><H3>
    278. 

  278. getMacSize</H3>
    279. 

  279. <PRE>
    280. 

  280. public int <B>getMacSize</B>()</PRE>
    281. 

  281. <DL>
    282. 

  282. <DD><B>Description copied from interface: <CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html#getMacSize()">Mac</A></CODE></B></DD>
    283. 

  283. <DD>Return the block size for this MAC (in bytes).
    284. 

  284. <P>
    285. 

  285. <DD><DL>
    286. 

  286. <DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html#getMacSize()">getMacSize</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html" title="interface in org.bouncycastle.crypto">Mac</A></CODE></DL>
    287. 

  287. </DD>
    288. 

  288. <DD><DL>
    289. 

  289. 

  290. <DT><B>Returns:</B><DD>the block size for this MAC in bytes.</DL>
    291. 

  291. </DD>
    292. 

  292. </DL>
    293. 

  293. <HR>
    294. 

  294. 

  295. <A NAME="update(byte)"><!-- --></A><H3>
    296. 

  296. update</H3>
    297. 

  297. <PRE>
    298. 

  298. public void <B>update</B>(byte&nbsp;in)
    299. 

  299.             throws java.lang.IllegalStateException</PRE>
    300. 

  300. <DL>
    301. 

  301. <DD><B>Description copied from interface: <CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html#update(byte)">Mac</A></CODE></B></DD>
    302. 

  302. <DD>add a single byte to the mac for processing.
    303. 

  303. <P>
    304. 

  304. <DD><DL>
    305. 

  305. <DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html#update(byte)">update</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html" title="interface in org.bouncycastle.crypto">Mac</A></CODE></DL>
    306. 

  306. </DD>
    307. 

  307. <DD><DL>
    308. 

  308. <DT><B>Parameters:</B><DD><CODE>in</CODE> - the byte to be processed.
    309. 

  309. <DT><B>Throws:</B>
    310. 

  310. <DD><CODE>java.lang.IllegalStateException</CODE> - if the MAC is not initialised.</DL>
    311. 

  311. </DD>
    312. 

  312. </DL>
    313. 

  313. <HR>
    314. 

  314. 

  315. <A NAME="update(byte[], int, int)"><!-- --></A><H3>
    316. 

  316. update</H3>
    317. 

  317. <PRE>
    318. 

  318. public void <B>update</B>(byte[]&nbsp;in,
    319. 

  319.                    int&nbsp;inOff,
    320. 

  320.                    int&nbsp;len)
    321. 

  321.             throws <A HREF="../../../../org/bouncycastle/crypto/DataLengthException.html" title="class in org.bouncycastle.crypto">DataLengthException</A>,
    322. 

  322.                    java.lang.IllegalStateException</PRE>
    323. 

  323. <DL>
    324. 

  324. <DD><DL>
    325. 

  325. <DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html#update(byte[], int, int)">update</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html" title="interface in org.bouncycastle.crypto">Mac</A></CODE></DL>
    326. 

  326. </DD>
    327. 

  327. <DD><DL>
    328. 

  328. <DT><B>Parameters:</B><DD><CODE>in</CODE> - the array containing the input.<DD><CODE>inOff</CODE> - the index in the array the data begins at.<DD><CODE>len</CODE> - the length of the input starting at inOff.
    329. 

  329. <DT><B>Throws:</B>
    330. 

  330. <DD><CODE><A HREF="../../../../org/bouncycastle/crypto/DataLengthException.html" title="class in org.bouncycastle.crypto">DataLengthException</A></CODE> - if there isn't enough data in in.
    331. 

  331. <DD><CODE>java.lang.IllegalStateException</CODE> - if the MAC is not initialised.</DL>
    332. 

  332. </DD>
    333. 

  333. </DL>
    334. 

  334. <HR>
    335. 

  335. 

  336. <A NAME="doFinal(byte[], int)"><!-- --></A><H3>
    337. 

  337. doFinal</H3>
    338. 

  338. <PRE>
    339. 

  339. public int <B>doFinal</B>(byte[]&nbsp;out,
    340. 

  340.                    int&nbsp;outOff)
    341. 

  341.             throws <A HREF="../../../../org/bouncycastle/crypto/DataLengthException.html" title="class in org.bouncycastle.crypto">DataLengthException</A>,
    342. 

  342.                    java.lang.IllegalStateException</PRE>
    343. 

  343. <DL>
    344. 

  344. <DD><B>Description copied from interface: <CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html#doFinal(byte[], int)">Mac</A></CODE></B></DD>
    345. 

  345. <DD>Compute the final stage of the MAC writing the output to the out
    346. 

  346.  parameter.
    347. 

  347.  <p>
    348. 

  348.  doFinal leaves the MAC in the same state it was after the last init.
    349. 

  349. <P>
    350. 

  350. <DD><DL>
    351. 

  351. <DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html#doFinal(byte[], int)">doFinal</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html" title="interface in org.bouncycastle.crypto">Mac</A></CODE></DL>
    352. 

  352. </DD>
    353. 

  353. <DD><DL>
    354. 

  354. <DT><B>Parameters:</B><DD><CODE>out</CODE> - the array the MAC is to be output to.<DD><CODE>outOff</CODE> - the offset into the out buffer the output is to start at.
    355. 

  355. <DT><B>Throws:</B>
    356. 

  356. <DD><CODE><A HREF="../../../../org/bouncycastle/crypto/DataLengthException.html" title="class in org.bouncycastle.crypto">DataLengthException</A></CODE> - if there isn't enough space in out.
    357. 

  357. <DD><CODE>java.lang.IllegalStateException</CODE> - if the MAC is not initialised.</DL>
    358. 

  358. </DD>
    359. 

  359. </DL>
    360. 

  360. <HR>
    361. 

  361. 

  362. <A NAME="reset()"><!-- --></A><H3>
    363. 

  363. reset</H3>
    364. 

  364. <PRE>
    365. 

  365. public void <B>reset</B>()</PRE>
    366. 

  366. <DL>
    367. 

  367. <DD><B>Description copied from interface: <CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html#reset()">Mac</A></CODE></B></DD>
    368. 

  368. <DD>Reset the MAC. At the end of resetting the MAC should be in the
    369. 

  369.  in the same state it was after the last init (if there was one).
    370. 

  370. <P>
    371. 

  371. <DD><DL>
    372. 

  372. <DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html#reset()">reset</A></CODE> in interface <CODE><A HREF="../../../../org/bouncycastle/crypto/Mac.html" title="interface in org.bouncycastle.crypto">Mac</A></CODE></DL>
    373. 

  373. </DD>
    374. 

  374. <DD><DL>
    375. 

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    376. 

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  402. <b>Bouncy Castle Cryptography Library 1.45</b></EM>
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