TY - RPRT TI - 45h annual PKI R & D workshop multiple paths to trust proceedings AU - Neuman, Clifford AU - Hastings, Nelson E AU - Polk, William T PY - 2005 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST IR 7224 DO - 10.6028/NIST.IR.7224 ER -