blob: e578fd53bdf72e198c19dbe705fba0d93c0279b2 (
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
|
package org.bouncycastle.pkcs.bc;
import java.io.InputStream;
import org.bouncycastle.asn1.pkcs.PKCS12PBEParams;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
import org.bouncycastle.crypto.CipherParameters;
import org.bouncycastle.crypto.ExtendedDigest;
import org.bouncycastle.crypto.digests.SHA1Digest;
import org.bouncycastle.crypto.generators.PKCS12ParametersGenerator;
import org.bouncycastle.crypto.io.CipherInputStream;
import org.bouncycastle.crypto.paddings.PaddedBufferedBlockCipher;
import org.bouncycastle.operator.GenericKey;
import org.bouncycastle.operator.InputDecryptor;
import org.bouncycastle.operator.InputDecryptorProvider;
public class BcPKCS12PBEInputDecryptorProviderBuilder
{
private ExtendedDigest digest;
public BcPKCS12PBEInputDecryptorProviderBuilder()
{
this(new SHA1Digest());
}
public BcPKCS12PBEInputDecryptorProviderBuilder(ExtendedDigest digest)
{
this.digest = digest;
}
public InputDecryptorProvider build(final char[] password)
{
return new InputDecryptorProvider()
{
public InputDecryptor get(final AlgorithmIdentifier algorithmIdentifier)
{
final PaddedBufferedBlockCipher engine = PKCS12PBEUtils.getEngine(algorithmIdentifier.getAlgorithm());
PKCS12PBEParams pbeParams = PKCS12PBEParams.getInstance(algorithmIdentifier.getParameters());
CipherParameters params = PKCS12PBEUtils.createCipherParameters(algorithmIdentifier.getAlgorithm(), digest, engine.getBlockSize(), pbeParams, password);
engine.init(false, params);
return new InputDecryptor()
{
public AlgorithmIdentifier getAlgorithmIdentifier()
{
return algorithmIdentifier;
}
public InputStream getInputStream(InputStream input)
{
return new CipherInputStream(input, engine);
}
public GenericKey getKey()
{
return new GenericKey(PKCS12ParametersGenerator.PKCS12PasswordToBytes(password));
}
};
}
};
}
}
|