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author | Gregor Kleen <gkleen@yggdrasil.li> | 2016-01-19 12:03:36 +0100 |
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committer | Gregor Kleen <gkleen@yggdrasil.li> | 2016-01-19 12:03:36 +0100 |
commit | cc56343a75297fa39b3d215804b6145ef00ff1ed (patch) | |
tree | f9b46670965f7fea39ec7bf58888a130caecf8f2 /ws2015/eip/blaetter/10/2/SHA.java | |
parent | 171df5103570946d4e1ff015dee9ed657036e94a (diff) | |
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EiP 10.2
Diffstat (limited to 'ws2015/eip/blaetter/10/2/SHA.java')
-rw-r--r-- | ws2015/eip/blaetter/10/2/SHA.java | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/ws2015/eip/blaetter/10/2/SHA.java b/ws2015/eip/blaetter/10/2/SHA.java new file mode 100644 index 0000000..ad40f99 --- /dev/null +++ b/ws2015/eip/blaetter/10/2/SHA.java | |||
@@ -0,0 +1,28 @@ | |||
1 | import java.security.MessageDigest; | ||
2 | import java.security.NoSuchAlgorithmException; | ||
3 | import java.util.Formatter; | ||
4 | |||
5 | public class SHA { | ||
6 | |||
7 | /** | ||
8 | * Gibt den Hashwert des Parameters zurueck - die Implementierung dieser Methode | ||
9 | * ist fuer diese Aufgabe *NICHT* relevant, braucht nicht weiter beachtet zu werden | ||
10 | * @param text auf den der Hashalgorithmus angewendet werden soll | ||
11 | * @return den Hashwert | ||
12 | */ | ||
13 | public static String encrypt(String text) { | ||
14 | try { | ||
15 | MessageDigest md = MessageDigest.getInstance("SHA"); | ||
16 | md.update(text.getBytes()); | ||
17 | byte[] digest = md.digest(); | ||
18 | |||
19 | Formatter formatter = new Formatter(); | ||
20 | for (byte d: digest) | ||
21 | formatter.format("%02x", 0xFF & d); | ||
22 | return formatter.toString(); | ||
23 | } catch (NoSuchAlgorithmException e) { | ||
24 | e.printStackTrace(); | ||
25 | return null; | ||
26 | } | ||
27 | } | ||
28 | } \ No newline at end of file | ||