blob: 635e7d70ba3e5fb1a815d2b94d1bc3cf5eeab51f (
plain) (
blame)
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
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Asn1.CryptoPro;
using Org.BouncyCastle.Asn1.Nist;
using Org.BouncyCastle.Asn1.Oiw;
using Org.BouncyCastle.Asn1.Pkcs;
using Org.BouncyCastle.Asn1.TeleTrust;
using Org.BouncyCastle.Asn1.X509;
using Org.BouncyCastle.Asn1.X9;
using Org.BouncyCastle.Security;
namespace Org.BouncyCastle.X509
{
internal class X509SignatureUtilities
{
internal static bool AreEquivalentAlgorithms(AlgorithmIdentifier id1, AlgorithmIdentifier id2)
{
if (!id1.Algorithm.Equals(id2.Algorithm))
return false;
Asn1Encodable p1 = id1.Parameters;
Asn1Encodable p2 = id2.Parameters;
if (p1 == p2)
return true;
if (p1 == null)
return p2.ToAsn1Object() is Asn1Null;
if (p2 == null)
return p1.ToAsn1Object() is Asn1Null;
return p1.Equals(p2);
}
internal static string GetSignatureName(AlgorithmIdentifier sigAlgID)
{
DerObjectIdentifier sigAlgOid = sigAlgID.Algorithm;
Asn1Encodable parameters = sigAlgID.Parameters;
if (parameters != null && !DerNull.Instance.Equals(parameters))
{
if (PkcsObjectIdentifiers.IdRsassaPss.Equals(sigAlgOid))
{
RsassaPssParameters rsaParams = RsassaPssParameters.GetInstance(parameters);
return GetDigestAlgName(rsaParams.HashAlgorithm.Algorithm) + "withRSAandMGF1";
}
if (X9ObjectIdentifiers.ECDsaWithSha2.Equals(sigAlgOid))
{
Asn1Sequence ecDsaParams = Asn1Sequence.GetInstance(parameters);
return GetDigestAlgName((DerObjectIdentifier)ecDsaParams[0]) + "withECDSA";
}
}
return SignerUtilities.GetEncodingName(sigAlgOid) ?? sigAlgOid.GetID();
}
/**
* Return the digest algorithm using one of the standard JCA string
* representations rather than the algorithm identifier (if possible).
*/
private static string GetDigestAlgName(DerObjectIdentifier digestAlgOID)
{
if (PkcsObjectIdentifiers.MD5.Equals(digestAlgOID))
{
return "MD5";
}
else if (OiwObjectIdentifiers.IdSha1.Equals(digestAlgOID))
{
return "SHA1";
}
else if (NistObjectIdentifiers.IdSha224.Equals(digestAlgOID))
{
return "SHA224";
}
else if (NistObjectIdentifiers.IdSha256.Equals(digestAlgOID))
{
return "SHA256";
}
else if (NistObjectIdentifiers.IdSha384.Equals(digestAlgOID))
{
return "SHA384";
}
else if (NistObjectIdentifiers.IdSha512.Equals(digestAlgOID))
{
return "SHA512";
}
else if (TeleTrusTObjectIdentifiers.RipeMD128.Equals(digestAlgOID))
{
return "RIPEMD128";
}
else if (TeleTrusTObjectIdentifiers.RipeMD160.Equals(digestAlgOID))
{
return "RIPEMD160";
}
else if (TeleTrusTObjectIdentifiers.RipeMD256.Equals(digestAlgOID))
{
return "RIPEMD256";
}
else if (CryptoProObjectIdentifiers.GostR3411.Equals(digestAlgOID))
{
return "GOST3411";
}
else
{
return digestAlgOID.GetID();
}
}
}
}
|
