OID value: 1.3.6.1.4.1.311.10.3.4.1
OID description:
The presence of this OID in an X.509 certificate's extendedKeyUsage extension allows the user to recover files encrypted by another person using Microsoft's Encrypting File System.
URL for further info: http://support.microsoft.com/default.aspx?scid=kb;en-us;Q273856
See also the OID Repository website reference for 1.3.6.1.4.1.311.10.3.4.1