diff -Naurp apt-0.5.15cnc6.orig/apt-pkg/acquire-item.cc apt-0.5.15cnc6/apt-pkg/acquire-item.cc
--- apt-0.5.15cnc6.orig/apt-pkg/acquire-item.cc	2005-07-08 15:02:30 +0400
+++ apt-0.5.15cnc6/apt-pkg/acquire-item.cc	2005-07-08 16:14:04 +0400
@@ -476,14 +476,29 @@ void pkgAcqIndexRel::Done(string Message
 	    return;
 	 }
 
-	 // Match fingerprint of Release file
-	 if (Repository->Vendor->FingerPrint != FingerPrint)
+	 bool found = false;
+	 for (vector<string>::const_iterator I = Repository->Vendor->FingerPrint.begin();
+	      I != Repository->Vendor->FingerPrint.end(); I++)
+	 {
+	    // Match fingerprint of Release file
+	    if ((*I) == FingerPrint)
+	    {
+	       found = true;
+	       break;
+	    }
+	 }
+
+	 if (!found)
 	 {
 	    Status = StatError;
-	    ErrorText = _("Signature fingerprint of Release file does not match (expected ")
-	       +Repository->Vendor->FingerPrint+_(", got ")+FingerPrint+")";
+	    ErrorText = _("Signature fingerprint of Release file does not match (expected ");
+	    for (vector<string>::const_iterator I = Repository->Vendor->FingerPrint.begin();
+		 I != Repository->Vendor->FingerPrint.end(); I++)
+	      ErrorText += "\n"+(*I);
+	    ErrorText += _(", got ")+FingerPrint+")";
 	    return;
 	 }
+
       }
 
       // Done, move it into position
diff -Naurp apt-0.5.15cnc6.orig/apt-pkg/sourcelist.cc apt-0.5.15cnc6/apt-pkg/sourcelist.cc
--- apt-0.5.15cnc6.orig/apt-pkg/sourcelist.cc	2003-12-10 14:56:28 +0300
+++ apt-0.5.15cnc6/apt-pkg/sourcelist.cc	2005-07-08 17:20:32 +0400
@@ -145,7 +145,7 @@ pkgSourceList::~pkgSourceList()
 {
    for (const_iterator I = SrcList.begin(); I != SrcList.end(); I++)
       delete *I;
-   for (vector<Vendor const *>::const_iterator I = VendorList.begin(); 
+   for (vector<Vendor *>::iterator I = VendorList.begin(); 
 	I != VendorList.end(); I++)
       delete *I;
 }
@@ -169,38 +169,54 @@ bool pkgSourceList::ReadVendors()
       if (ReadConfigFile(Cnf,CnfFile,true) == false)
 	 return false;
 
-   for (vector<Vendor const *>::const_iterator I = VendorList.begin(); 
+   for (vector<Vendor *>::iterator I = VendorList.begin(); 
 	I != VendorList.end(); I++)
       delete *I;
    VendorList.erase(VendorList.begin(),VendorList.end());
-   
+
    // Process 'simple-key' type sections
    const Configuration::Item *Top = Cnf.Tree("simple-key");
    for (Top = (Top == 0?0:Top->Child); Top != 0; Top = Top->Next)
    {
       Configuration Block(Top);
-      Vendor *Vendor;
+      Vendor *Vendor = 0;
+      string Group = Block.Find("Group");
+      bool New = true;
       
-      Vendor = new pkgSourceList::Vendor;
-      
-      Vendor->VendorID = Top->Tag;
-      Vendor->FingerPrint = Block.Find("Fingerprint");
-      Vendor->Description = Block.Find("Name");
+      for (vector<pkgSourceList::Vendor *>::iterator I = VendorList.begin(); 
+	   I != VendorList.end(); I++)
+      {
+        if ((*I)->VendorID == Group)
+	{
+	  Vendor = *I;
+	  New = false;
+	  break;
+	}
+      }
+
+      if (!Vendor)
+      {
+        Vendor = new pkgSourceList::Vendor;
+
+        Vendor->Description = Block.Find("Name");
+	Vendor->VendorID = Top->Tag;
+      }
+      string FingerPrint = Block.Find("Fingerprint");
 
       // CNC:2002-08-15
-      char *buffer = new char[Vendor->FingerPrint.length()+1];
+      char *buffer = new char[FingerPrint.length()+1];
       char *p = buffer;;
-      for (string::const_iterator I = Vendor->FingerPrint.begin();
-	   I != Vendor->FingerPrint.end(); I++)
+      for (string::const_iterator I = FingerPrint.begin();
+	   I != FingerPrint.end(); I++)
       {
 	 if (*I != ' ' && *I != '\t')
 	    *p++ = *I;
       }
       *p = 0;
-      Vendor->FingerPrint = buffer;
+      Vendor->FingerPrint.push_back(string(buffer));
       delete [] buffer;
       
-      if (Vendor->FingerPrint.empty() == true || 
+      if (Vendor->FingerPrint.size() == 0 || 
 	  Vendor->Description.empty() == true)
       {
          _error->Error(_("Vendor block %s is invalid"), Vendor->VendorID.c_str());
@@ -208,7 +225,8 @@ bool pkgSourceList::ReadVendors()
 	 continue;
       }
       
-      VendorList.push_back(Vendor);
+      if (New)
+         VendorList.push_back(Vendor);
    }
 
    /* XXX Process 'group-key' type sections
@@ -350,7 +368,7 @@ bool pkgSourceList::ReadAppend(string Fi
 	     return _error->Error(_("Malformed line %u in source list %s (vendor id)"),CurLine,File.c_str());
 	 VendorID = string(VendorID,1,VendorID.size()-2);
 	 
-	 for (vector<Vendor const *>::const_iterator iter = VendorList.begin();
+	 for (vector<Vendor *>::iterator iter = VendorList.begin();
 	      iter != VendorList.end(); iter++) 
 	 {
 	    if ((*iter)->VendorID == VendorID)
diff -Naurp apt-0.5.15cnc6.orig/apt-pkg/sourcelist.h apt-0.5.15cnc6/apt-pkg/sourcelist.h
--- apt-0.5.15cnc6.orig/apt-pkg/sourcelist.h	2003-03-03 23:15:04 +0300
+++ apt-0.5.15cnc6/apt-pkg/sourcelist.h	2005-07-08 17:07:17 +0400
@@ -48,8 +48,8 @@ class pkgSourceList
    struct Vendor
    {
       string VendorID;
-      string FingerPrint;
+      vector<string> FingerPrint;
       string Description;
 
       /* Lets revisit these..
       bool MatchFingerPrint(string FingerPrint);
@@ -87,8 +88,8 @@ class pkgSourceList
    protected:
 
    vector<pkgIndexFile *> SrcList;
-   vector<Vendor const *> VendorList;
-   
+   vector<Vendor *> VendorList;
+
    public:
 
    bool ReadMainList();