Algorithm Identifiers for HSS and XMSS for Use in the Internet X.509 Public Key Infrastructure

Document Type Expired Internet-Draft (individual)
Authors Daniel Van Geest  , Scott Fluhrer 
Last updated 2019-09-12 (latest revision 2019-03-11)
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This document specifies algorithm identifiers and ASN.1 encoding formats for the Hierarchical Signature System (HSS), eXtended Merkle Signature Scheme (XMSS), and XMSS^MT, a multi-tree variant of XMSS. This specification applies to the Internet X.509 Public Key infrastructure (PKI) when digital signatures are used to sign certificates and certificate revocation lists (CRLs).


Daniel Van Geest (
Scott Fluhrer (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)