-
Notifications
You must be signed in to change notification settings - Fork 33
Expand file tree
/
Copy pathSm3.java
More file actions
65 lines (55 loc) · 1.39 KB
/
Sm3.java
File metadata and controls
65 lines (55 loc) · 1.39 KB
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
/*
* Copyright 2014-2023 The GmSSL Project. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
*
* http://www.apache.org/licenses/LICENSE-2.0
*/
package org.gmssl;
public class Sm3 implements AutoCloseable{
public final static int DIGEST_SIZE = GmSSLJNI.SM3_DIGEST_SIZE;
private long sm3_ctx = 0;
public Sm3() {
if ((sm3_ctx = GmSSLJNI.sm3_ctx_new()) == 0) {
throw new GmSSLException("");
}
if (GmSSLJNI.sm3_init(sm3_ctx) != 1) {
throw new GmSSLException("");
}
}
public void reset() {
if (GmSSLJNI.sm3_init(sm3_ctx) != 1) {
throw new GmSSLException("");
}
}
public void update(byte[] data, int offset, int len) {
if (data == null
|| offset < 0
|| len < 0
|| offset + len <= 0
|| data.length < offset + len) {
throw new GmSSLException("");
}
if (GmSSLJNI.sm3_update(sm3_ctx, data, offset, len) != 1) {
throw new GmSSLException("");
}
}
public void update(byte[] data) {
this.update(data, 0, data.length);
}
public byte[] digest() {
byte[] dgst = new byte[DIGEST_SIZE];
if (GmSSLJNI.sm3_finish(sm3_ctx, dgst) != 1) {
throw new GmSSLException("");
}
if (GmSSLJNI.sm3_init(sm3_ctx) != 1) {
throw new GmSSLException("");
}
return dgst;
}
@Override
public void close() throws Exception {
GmSSLJNI.sm3_ctx_free(sm3_ctx);
}
}