void m_initialize2(Wincrypt.CRYPT_ATTRIBUTE blob)
{
Oid = new Oid(blob.pszObjId);
Wincrypt.CRYPTOAPI_BLOB attrStruct = (Wincrypt.CRYPTOAPI_BLOB)Marshal.PtrToStructure(blob.rgValue, typeof(Wincrypt.CRYPTOAPI_BLOB));
RawData = new Byte[attrStruct.cbData];
Marshal.Copy(attrStruct.pbData, RawData, 0, RawData.Length);
}
void getAttributes()
{
if (reqData.cAttribute <= 0)
{
return;
}
IntPtr rgAttribute = reqData.rgAttribute;
for (Int32 index = 0; index < reqData.cAttribute; index++)
{
Wincrypt.CRYPT_ATTRIBUTE attrib = (Wincrypt.CRYPT_ATTRIBUTE)Marshal.PtrToStructure(rgAttribute, typeof(Wincrypt.CRYPT_ATTRIBUTE));
Oid attriboid = new Oid(attrib.pszObjId);
Wincrypt.CRYPTOAPI_BLOB blob = (Wincrypt.CRYPTOAPI_BLOB)Marshal.PtrToStructure(attrib.rgValue, typeof(Wincrypt.CRYPTOAPI_BLOB));
Byte[] bytes = new Byte[blob.cbData];
Marshal.Copy(blob.pbData, bytes, 0, (Int32)blob.cbData);
if (attrib.pszObjId == "1.2.840.113549.1.9.14")
{
getExtensions(bytes);
}
else
{
_attribs.Add(new X509Attribute(attriboid, bytes));
}
rgAttribute = (IntPtr)((UInt64)rgAttribute + (UInt32)Marshal.SizeOf(typeof(Wincrypt.CRYPT_ATTRIBUTE)));
}
}
void decodeUnauthAttr(Wincrypt.CRYPT_ATTRIBUTES unauthAttrs)
{
if (unauthAttrs.cAttr == 0)
{
return;
}
IntPtr rgValue = unauthAttrs.rgAttr;
Int32 size = Marshal.SizeOf(typeof(Wincrypt.CRYPT_ATTRIBUTE));
UnauthenticatedAttributes = new X509AttributeCollection();
for (Int32 index = 0; index < unauthAttrs.cAttr; index++)
{
Wincrypt.CRYPT_ATTRIBUTE attr = (Wincrypt.CRYPT_ATTRIBUTE)Marshal.PtrToStructure(rgValue, typeof(Wincrypt.CRYPT_ATTRIBUTE));
UnauthenticatedAttributes.Add(new X509Attribute(attr));
rgValue += size;
}
}
static Wincrypt.CRYPT_ATTRIBUTE create_attribute(IntPtr handle, UInt32 propId)
{
UInt32 pcbData = 0;
Wincrypt.CRYPT_ATTRIBUTE attrib = new Wincrypt.CRYPT_ATTRIBUTE();
if (Crypt32.CertGetCertificateContextProperty(handle, propId, IntPtr.Zero, ref pcbData))
{
attrib.rgValue = Marshal.AllocHGlobal((Int32)pcbData);
attrib.pszObjId = "1.3.6.1.4.1.311.10.11." + propId;
attrib.cValue = pcbData;
Crypt32.CertGetCertificateContextProperty(handle, propId, attrib.rgValue, ref pcbData);
}
else
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
return(attrib);
}
void get_ctlentries()
{
if (CTLInfo.cCTLEntry > 0)
{
Entries = new X509CTLEntryCollection();
IntPtr rgCTLEntry = CTLInfo.rgCTLEntry;
for (Int32 index = 0; index < CTLInfo.cCTLEntry; index++)
{
StringBuilder SB = new StringBuilder();
X509AttributeCollection attributes = new X509AttributeCollection();
Wincrypt.CTL_ENTRY CTLEntry = (Wincrypt.CTL_ENTRY)Marshal.PtrToStructure(rgCTLEntry, typeof(Wincrypt.CTL_ENTRY));
byte[] bytes = new Byte[CTLEntry.SubjectIdentifier.cbData];
Marshal.Copy(CTLEntry.SubjectIdentifier.pbData, bytes, 0, bytes.Length);
foreach (Byte item in bytes)
{
SB.Append($"{item:X2}");
}
String thumbprint = SB.ToString();
if (CTLEntry.cAttribute > 0)
{
IntPtr rgAttribute = CTLEntry.rgAttribute;
for (Int32 indexx = 0; indexx < CTLEntry.cAttribute; indexx++)
{
Wincrypt.CRYPT_ATTRIBUTE attrib = (Wincrypt.CRYPT_ATTRIBUTE)Marshal.PtrToStructure(rgAttribute, typeof(Wincrypt.CRYPT_ATTRIBUTE));
Oid pszOid = new Oid(attrib.pszObjId);
Wincrypt.CRYPTOAPI_BLOB blob = (Wincrypt.CRYPTOAPI_BLOB)Marshal.PtrToStructure(attrib.rgValue, typeof(Wincrypt.CRYPTOAPI_BLOB));
bytes = new Byte[blob.cbData];
Marshal.Copy(blob.pbData, bytes, 0, bytes.Length);
attributes.Add(new X509Attribute(pszOid, bytes));
rgAttribute = (IntPtr)((UInt64)rgAttribute + (UInt32)Marshal.SizeOf(typeof(Wincrypt.CRYPT_ATTRIBUTE)));
}
}
Entries.Add(new X509CTLEntry(thumbprint, attributes));
rgCTLEntry = (IntPtr)((UInt64)rgCTLEntry + (UInt32)Marshal.SizeOf(typeof(Wincrypt.CTL_ENTRY)));
}
}
}
internal X509Attribute(Wincrypt.CRYPT_ATTRIBUTE blob)
{
m_initialize2(blob);
}
