blob: 0b8902e8c0448f1b3e91beb028790f844f3caddb (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
/*
* Copyright (c) 2011 Tobias Markmann
* Licensed under the simplified BSD license.
* See Documentation/Licenses/BSD-simplified.txt for more information.
*/
/*
* Copyright (c) 2013-2014 Isode Limited.
* All rights reserved.
* See the COPYING file for more information.
*/
/*
* Copyright (c) 2015 Tarun Gupta.
* Licensed under the simplified BSD license.
* See Documentation/Licenses/BSD-simplified.txt for more information.
*/
package com.isode.stroke.filetransfer;
import com.isode.stroke.crypto.Hash;
import com.isode.stroke.crypto.CryptoProvider;
import com.isode.stroke.base.ByteArray;
import com.isode.stroke.stringcodecs.Hexify;
public class IncrementalBytestreamHashCalculator {
private Hash md5Hasher;
private Hash sha1Hasher;
private ByteArray md5Hash;
private ByteArray sha1Hash;
public IncrementalBytestreamHashCalculator(boolean doMD5, boolean doSHA1, CryptoProvider crypto) {
md5Hasher = doMD5 ? crypto.createMD5() : null;
sha1Hasher = doSHA1 ? crypto.createSHA1() : null;
}
public void feedData(final ByteArray data) {
if (md5Hasher != null) {
md5Hasher.update(data);
}
if (sha1Hasher != null) {
sha1Hasher.update(data);
}
}
public ByteArray getSHA1Hash() {
assert(sha1Hasher != null);
if (sha1Hash == null) {
sha1Hash = sha1Hasher.getHash();
}
return sha1Hash;
}
public ByteArray getMD5Hash() {
assert(md5Hasher != null);
if (md5Hash == null) {
md5Hash = md5Hasher.getHash();
}
return md5Hash;
}
public String getSHA1String() {
assert(sha1Hasher != null);
return Hexify.hexify(getSHA1Hash());
}
public String getMD5String() {
assert(md5Hasher != null);
return Hexify.hexify(getMD5Hash());
}
}
|