Update of /cvsroot/pgsqlclient/pgsqlclient_10/Mono.Security.Protocol.Tls/Mono.Security.Protocol.Tls/Mono.Security
In directory sc8-pr-cvs1:/tmp/cvs-serv9370
Added Files:
ASN1Convert.cs
Log Message:
2003-10-28 Carlos Guzmán Álvarez <car...@te...>
* CipherSuite.cs:
* TlsSessionSettings.cs:
* TlsServerSettings.cs:
* Mono.Security.Protocol.Tls.Handshake.Client/TlsClientCertificateVerify.cs:
* Mono.Security.Protocol.Tls.Handshake.Client/TlsClientKeyExchange.cs:
* Mono.Security.Protocol.Tls.Handshake.Client/TlsServerCertificate.cs:
* Mono.Security.Protocol.Tls.Handshake.Client/TlsServerKeyExchange.cs:
- Added changes for make use of X509 classes from mono.
* Mono.Security/ASN1Convert.cs:
* Mono.Security.X509/*.*:
- New files from mono for allow basic certificate validation.
--- NEW FILE: ASN1Convert.cs ---
//
// ASN1Convert.cs: Abstract Syntax Notation 1 convertion routines
//
// Author:
// Sebastien Pouliot (spo...@mo...)
//
// (C) 2003 Motus Technologies Inc. (http://www.motus.com)
//
using System;
using System.Collections;
using System.Security.Cryptography;
using System.Text;
namespace Mono.Security {
// References:
// a. ITU ASN.1 standards (free download)
// http://www.itu.int/ITU-T/studygroups/com17/languages/
internal class ASN1Convert {
// RFC3280, section 4.2.1.5
// CAs conforming to this profile MUST always encode certificate
// validity dates through the year 2049 as UTCTime; certificate validity
// dates in 2050 or later MUST be encoded as GeneralizedTime.
static public ASN1 FromDateTime (DateTime dt)
{
if (dt.Year < 2050) {
// UTCTIME
return new ASN1 (0x17, Encoding.ASCII.GetBytes (dt.ToString ("yyMMddHHmmss") + "Z"));
}
else {
// GENERALIZEDTIME
return new ASN1 (0x18, Encoding.ASCII.GetBytes (dt.ToString ("yyyyMMddHHmmss") + "Z"));
}
}
static public ASN1 FromInt32 (Int32 value)
{
byte[] integer = BitConverter.GetBytes (value);
int x = 3;
while (integer [x] == 0x00)
x--;
ASN1 asn1 = new ASN1 (0x02);
if (x == 3)
asn1.Value = integer;
else {
byte[] smallerInt = new byte [x + 1];
Array.Copy (integer, 0, smallerInt, 0, smallerInt.Length);
asn1.Value = smallerInt;
}
return asn1;
}
static public ASN1 FromOID (string oid)
{
return new ASN1 (CryptoConfig.EncodeOID (oid));
}
static public ASN1 FromUnsignedBigInteger (byte[] integer)
{
if (integer [0] == 0x00) {
// this first byte is added so we're sure it's an unsigned integer
// however we can't feed it into RSAParameters or DSAParameters
int length = integer.Length + 1;
byte[] uinteger = new byte [length];
Array.Copy (integer, 0, uinteger, 1, length);
integer = uinteger;
}
return new ASN1 (0x02, integer);
}
static public int ToInt32 (ASN1 asn1)
{
if (asn1.Tag != 0x02)
throw new NotSupportedException ("Only integer can be converted");
int x = 0;
for (int i=0; i < asn1.Value.Length; i++)
x = (x << 8) + asn1.Value [i];
return x;
}
// Convert a binary encoded OID to human readable string representation of
// an OID (IETF style). Based on DUMPASN1.C from Peter Gutmann.
static public string ToOID (ASN1 asn1)
{
byte[] aOID = asn1.Value;
StringBuilder sb = new StringBuilder ();
// Pick apart the OID
byte x = (byte) (aOID[0] / 40);
byte y = (byte) (aOID[0] % 40);
if (x > 2) {
// Handle special case for large y if x = 2
y += (byte) ((x - 2) * 40);
x = 2;
}
sb.Append (x.ToString ());
sb.Append (".");
sb.Append (y.ToString ());
ulong val = 0;
for (x = 1; x < aOID.Length; x++) {
val = ((val << 7) | ((byte) (aOID [x] & 0x7F)));
if ( !((aOID [x] & 0x80) == 0x80)) {
sb.Append (".");
sb.Append (val.ToString ());
val = 0;
}
}
return sb.ToString ();
}
static public DateTime ToDateTime (ASN1 time)
{
string t = Encoding.ASCII.GetString (time.Value);
// to support both UTCTime and GeneralizedTime (and not so common format)
string mask = null;
switch (t.Length) {
case 11:
mask = "yyMMddHHmmZ"; // illegal I think ... must check
break;
case 13:
// RFC3280: 4.1.2.5.1 UTCTime
int year = Convert.ToInt16 (t.Substring (0, 2));
// Where YY is greater than or equal to 50, the
// year SHALL be interpreted as 19YY; and
// Where YY is less than 50, the year SHALL be
// interpreted as 20YY.
if (year >= 50)
t = "19" + t;
else
t = "20" + t;
mask = "yyyyMMddHHmmssZ";
break;
case 15:
mask = "yyyyMMddHHmmssZ"; // GeneralizedTime
break;
}
return DateTime.ParseExact (t, mask, null);
}
}
}
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