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1 | build 3.zip\build 3\MHLTH_YS_137_Source\JavaScript\resources\javaJDF-1.8.0\src\com\sun\crypto\provider | HmacSHA1KeyGenerator.java | Mon Jan 22 14:46:50 2018 UTC |
2 | build 3.zip\build 3\MHLTH_YS_137_Source\JavaScript\resources\javaJDF-1.8.0\src\com\sun\crypto\provider | HmacSHA1KeyGenerator.java | Wed Sep 12 16:22:32 2018 UTC |
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1 | /* | |
2 | * Copyrig ht (c) 199 9, 2013, O racle and/ or its aff iliates. A ll rights reserved. | |
3 | * DO NOT ALTER OR R EMOVE COPY RIGHT NOTI CES OR THI S FILE HEA DER. | |
4 | * | |
5 | * This co de is free software; you can r edistribut e it and/o r modify i t | |
6 | * under t he terms o f the GNU General Pu blic Licen se version 2 only, a s | |
7 | * publish ed by the Free Softw are Founda tion. Ora cle design ates this | |
8 | * particu lar file a s subject to the "Cl asspath" e xception a s provided | |
9 | * by Orac le in the LICENSE fi le that ac companied this code. | |
10 | * | |
11 | * This co de is dist ributed in the hope that it wi ll be usef ul, but WI THOUT | |
12 | * ANY WAR RANTY; wit hout even the implie d warranty of MERCHA NTABILITY or | |
13 | * FITNESS FOR A PAR TICULAR PU RPOSE. Se e the GNU General Pu blic Licen se | |
14 | * version 2 for mor e details (a copy is included in the LIC ENSE file that | |
15 | * accompa nied this code). | |
16 | * | |
17 | * You sho uld have r eceived a copy of th e GNU Gene ral Public License v ersion | |
18 | * 2 along with this work; if not, write to the Fr ee Softwar e Foundati on, | |
19 | * Inc., 5 1 Franklin St, Fifth Floor, Bo ston, MA 0 2110-1301 USA. | |
20 | * | |
21 | * Please contact Or acle, 500 Oracle Par kway, Redw ood Shores , CA 94065 USA | |
22 | * or visi t www.orac le.com if you need a dditional informatio n or have any | |
23 | * questio ns. | |
24 | */ | |
25 | ||
26 | package co m.sun.cryp to.provide r; | |
27 | ||
28 | import jav a.security .SecureRan dom; | |
29 | import jav a.security .InvalidPa rameterExc eption; | |
30 | import jav a.security .InvalidAl gorithmPar ameterExce ption; | |
31 | import jav a.security .spec.Algo rithmParam eterSpec; | |
32 | import jav ax.crypto. KeyGenerat orSpi; | |
33 | import jav ax.crypto. SecretKey; | |
34 | import jav ax.crypto. spec.Secre tKeySpec; | |
35 | ||
36 | /** | |
37 | * This cl ass genera tes a PW key for us e with the HMAC-SHA1 algorithm . | |
38 | * | |
39 | * @author Jan Luehe | |
40 | * | |
41 | */ | |
42 | ||
43 | public fin al class H macSHA1Key Generator extends Ke yGenerator Spi { | |
44 | ||
45 | privat e SecureRa ndom rando m = null; | |
46 | privat e int keys ize = 64; // default keysize ( in number of bytes) | |
47 | ||
48 | /** | |
49 | * Emp ty constru ctor | |
50 | */ | |
51 | public HmacSHA1K eyGenerato r() { | |
52 | } | |
53 | ||
54 | /** | |
55 | * Ini tializes t his key ge nerator. | |
56 | * | |
57 | * @pa ram random the sourc e of rando mness for this gener ator | |
58 | */ | |
59 | protec ted void e ngineInit( SecureRand om random) { | |
60 | th is.random = random; | |
61 | } | |
62 | ||
63 | /** | |
64 | * Ini tializes t his key ge nerator wi th the spe cified par ameter | |
65 | * set and a use r-provided source of randomnes s. | |
66 | * | |
67 | * @pa ram params the key g eneration parameters | |
68 | * @pa ram random the sourc e of rando mness for this key g enerator | |
69 | * | |
70 | * @ex ception In validAlgor ithmParame terExcepti on if <cod e>params</ code> is | |
71 | * ina ppropriate for this key genera tor | |
72 | */ | |
73 | protec ted void e ngineInit( AlgorithmP arameterSp ec params, | |
74 | SecureRand om random) | |
75 | th rows Inval idAlgorith mParameter Exception | |
76 | { | |
77 | th row new In validAlgor ithmParame terExcepti on | |
78 | ("HMAC-S HA1 key ge neration d oes not ta ke any par ameters"); | |
79 | } | |
80 | ||
81 | /** | |
82 | * Ini tializes t his key ge nerator fo r a certai n keysize, using the given | |
83 | * sou rce of ran domness. | |
84 | * | |
85 | * @pa ram keysiz e the keys ize. This is an algo rithm-spec ific | |
86 | * met ric specif ied in num ber of bit s. | |
87 | * @pa ram random the sourc e of rando mness for this key g enerator | |
88 | */ | |
89 | protec ted void e ngineInit( int keysiz e, SecureR andom rand om) { | |
90 | th is.keysize = (keysiz e+7) / 8; | |
91 | th is.engineI nit(random ); | |
92 | } | |
93 | ||
94 | /** | |
95 | * Gen erates an HMAC-SHA1 key. | |
96 | * | |
97 | * @re turn the n ew HMAC-SH A1 key | |
98 | */ | |
99 | protec ted Secret Key engine GenerateKe y() { | |
100 | if (this.ran dom == nul l) { | |
101 | this.ran dom = SunJ CE.getRand om(); | |
102 | } | |
103 | ||
104 | by te[] keyBy tes = new byte[this. keysize]; | |
105 | th is.random. nextBytes( keyBytes); | |
106 | ||
107 | re turn new S ecretKeySp ec(keyByte s, "HmacSH A1"); | |
108 | } | |
109 | } |
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