Repository navigation
Expand file tree
/
Copy pathDotNetUtilities.cs
More file actions
245 lines (207 loc) · 7.1 KB
/
Copy pathDotNetUtilities.cs
File metadata and controls
245 lines (207 loc) · 7.1 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
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
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
#if !(NETCF_1_0 || SILVERLIGHT || PORTABLE)
using System;
using System.Security.Cryptography;
using SystemX509 = System.Security.Cryptography.X509Certificates;
using Org.BouncyCastle.Asn1.Pkcs;
using Org.BouncyCastle.Asn1.X509;
using Org.BouncyCastle.Crypto;
using Org.BouncyCastle.Crypto.Parameters;
using Org.BouncyCastle.Math;
using Org.BouncyCastle.Utilities;
using Org.BouncyCastle.X509;
namespace Org.BouncyCastle.Security
{
/// <summary>
/// A class containing methods to interface the BouncyCastle world to the .NET Crypto world.
/// </summary>
public sealed class DotNetUtilities
{
private DotNetUtilities()
{
}
/// <summary>
/// Create an System.Security.Cryptography.X509Certificate from an X509Certificate Structure.
/// </summary>
/// <param name="x509Struct"></param>
/// <returns>A System.Security.Cryptography.X509Certificate.</returns>
public static SystemX509.X509Certificate ToX509Certificate(
X509CertificateStructure x509Struct)
{
return new SystemX509.X509Certificate(x509Struct.GetDerEncoded());
}
public static SystemX509.X509Certificate ToX509Certificate(
X509Certificate x509Cert)
{
return new SystemX509.X509Certificate(x509Cert.GetEncoded());
}
public static X509Certificate FromX509Certificate(
SystemX509.X509Certificate x509Cert)
{
return new X509CertificateParser().ReadCertificate(x509Cert.GetRawCertData());
}
public static AsymmetricCipherKeyPair GetDsaKeyPair(
DSA dsa)
{
return GetDsaKeyPair(dsa.ExportParameters(true));
}
public static AsymmetricCipherKeyPair GetDsaKeyPair(
DSAParameters dp)
{
DsaValidationParameters validationParameters = (dp.Seed != null)
? new DsaValidationParameters(dp.Seed, dp.Counter)
: null;
DsaParameters parameters = new DsaParameters(
new BigInteger(1, dp.P),
new BigInteger(1, dp.Q),
new BigInteger(1, dp.G),
validationParameters);
DsaPublicKeyParameters pubKey = new DsaPublicKeyParameters(
new BigInteger(1, dp.Y),
parameters);
DsaPrivateKeyParameters privKey = new DsaPrivateKeyParameters(
new BigInteger(1, dp.X),
parameters);
return new AsymmetricCipherKeyPair(pubKey, privKey);
}
public static DsaPublicKeyParameters GetDsaPublicKey(
DSA dsa)
{
return GetDsaPublicKey(dsa.ExportParameters(false));
}
public static DsaPublicKeyParameters GetDsaPublicKey(
DSAParameters dp)
{
DsaValidationParameters validationParameters = (dp.Seed != null)
? new DsaValidationParameters(dp.Seed, dp.Counter)
: null;
DsaParameters parameters = new DsaParameters(
new BigInteger(1, dp.P),
new BigInteger(1, dp.Q),
new BigInteger(1, dp.G),
validationParameters);
return new DsaPublicKeyParameters(
new BigInteger(1, dp.Y),
parameters);
}
public static AsymmetricCipherKeyPair GetRsaKeyPair(
RSA rsa)
{
return GetRsaKeyPair(rsa.ExportParameters(true));
}
public static AsymmetricCipherKeyPair GetRsaKeyPair(
RSAParameters rp)
{
BigInteger modulus = new BigInteger(1, rp.Modulus);
BigInteger pubExp = new BigInteger(1, rp.Exponent);
RsaKeyParameters pubKey = new RsaKeyParameters(
false,
modulus,
pubExp);
RsaPrivateCrtKeyParameters privKey = new RsaPrivateCrtKeyParameters(
modulus,
pubExp,
new BigInteger(1, rp.D),
new BigInteger(1, rp.P),
new BigInteger(1, rp.Q),
new BigInteger(1, rp.DP),
new BigInteger(1, rp.DQ),
new BigInteger(1, rp.InverseQ));
return new AsymmetricCipherKeyPair(pubKey, privKey);
}
public static RsaKeyParameters GetRsaPublicKey(
RSA rsa)
{
return GetRsaPublicKey(rsa.ExportParameters(false));
}
public static RsaKeyParameters GetRsaPublicKey(
RSAParameters rp)
{
return new RsaKeyParameters(
false,
new BigInteger(1, rp.Modulus),
new BigInteger(1, rp.Exponent));
}
public static AsymmetricCipherKeyPair GetKeyPair(AsymmetricAlgorithm privateKey)
{
if (privateKey is DSA)
{
return GetDsaKeyPair((DSA)privateKey);
}
if (privateKey is RSA)
{
return GetRsaKeyPair((RSA)privateKey);
}
throw new ArgumentException("Unsupported algorithm specified", "privateKey");
}
public static RSA ToRSA(RsaKeyParameters rsaKey)
{
// TODO This appears to not work for private keys (when no CRT info)
return CreateRSAProvider(ToRSAParameters(rsaKey));
}
public static RSA ToRSA(RsaPrivateCrtKeyParameters privKey)
{
return CreateRSAProvider(ToRSAParameters(privKey));
}
public static RSA ToRSA(RsaPrivateKeyStructure privKey)
{
return CreateRSAProvider(ToRSAParameters(privKey));
}
public static RSAParameters ToRSAParameters(RsaKeyParameters rsaKey)
{
RSAParameters rp = new RSAParameters();
rp.Modulus = rsaKey.Modulus.ToByteArrayUnsigned();
if (rsaKey.IsPrivate)
rp.D = ConvertRSAParametersField(rsaKey.Exponent, rp.Modulus.Length);
else
rp.Exponent = rsaKey.Exponent.ToByteArrayUnsigned();
return rp;
}
public static RSAParameters ToRSAParameters(RsaPrivateCrtKeyParameters privKey)
{
RSAParameters rp = new RSAParameters();
rp.Modulus = privKey.Modulus.ToByteArrayUnsigned();
rp.Exponent = privKey.PublicExponent.ToByteArrayUnsigned();
rp.P = privKey.P.ToByteArrayUnsigned();
rp.Q = privKey.Q.ToByteArrayUnsigned();
rp.D = ConvertRSAParametersField(privKey.Exponent, rp.Modulus.Length);
rp.DP = ConvertRSAParametersField(privKey.DP, rp.P.Length);
rp.DQ = ConvertRSAParametersField(privKey.DQ, rp.Q.Length);
rp.InverseQ = ConvertRSAParametersField(privKey.QInv, rp.Q.Length);
return rp;
}
public static RSAParameters ToRSAParameters(RsaPrivateKeyStructure privKey)
{
RSAParameters rp = new RSAParameters();
rp.Modulus = privKey.Modulus.ToByteArrayUnsigned();
rp.Exponent = privKey.PublicExponent.ToByteArrayUnsigned();
rp.P = privKey.Prime1.ToByteArrayUnsigned();
rp.Q = privKey.Prime2.ToByteArrayUnsigned();
rp.D = ConvertRSAParametersField(privKey.PrivateExponent, rp.Modulus.Length);
rp.DP = ConvertRSAParametersField(privKey.Exponent1, rp.P.Length);
rp.DQ = ConvertRSAParametersField(privKey.Exponent2, rp.Q.Length);
rp.InverseQ = ConvertRSAParametersField(privKey.Coefficient, rp.Q.Length);
return rp;
}
// TODO Move functionality to more general class
private static byte[] ConvertRSAParametersField(BigInteger n, int size)
{
byte[] bs = n.ToByteArrayUnsigned();
if (bs.Length == size)
return bs;
if (bs.Length > size)
throw new ArgumentException("Specified size too small", "size");
byte[] padded = new byte[size];
Array.Copy(bs, 0, padded, size - bs.Length, bs.Length);
return padded;
}
private static RSA CreateRSAProvider(RSAParameters rp)
{
CspParameters csp = new CspParameters();
csp.KeyContainerName = string.Format("BouncyCastle-{0}", Guid.NewGuid());
RSACryptoServiceProvider rsaCsp = new RSACryptoServiceProvider(csp);
rsaCsp.ImportParameters(rp);
return rsaCsp;
}
}
}
#endif