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LTANS long-term archive The Evidence Record Syntax (ERS) and the conventions for including these evidence records in the Server-based Certificate Validation Protocol (SCVP) are expressed using ASN.1. This document offers alternative ASN.1 modules that conform to the 2002 version of ASN.1 and employ the conventions adopted in RFCs 5911, 5912, and 6268. There are no bits-on-the-wire changes to any of the formats; this is simply a change to the ASN.1 syntax.

Introduction Some developers would like the IETF to use the latest version of ASN.1 in its standards. This document provides alternative ASN.1 modules to assist in that goal. The Evidence Record Syntax (ERS) provides two ASN.1 modules: one using the 1988 syntax , which has been deprecated by the ITU-T, and another one using the newer syntax , which continues to be maintained and enhanced. This document provides an alternative ASN.1 module that follows the conventions established in , , and . In addition, specifies the mechanism for conveying evidence records in the Server-based Certificate Validation Protocol (SCVP) . There is only one ASN.1 module in , and it uses the 1988 syntax . This document provides an alternative ASN.1 module using the newer syntax and follows the conventions established in , , and . Note that already includes an alternative ASN.1 module for SCVP . The original ASN.1 modules get some of their definitions from places outside the RFC series. Some of the referenced definitions are somewhat difficult to find. The alternative ASN.1 modules offered in this document stand on their own when combined with the modules in , , and . The alternative ASN.1 modules produce the same bits on the wire as the original ones. The alternative ASN.1 modules are informative; the original ones are normative.

ASN.1 Module for RFC 4998

ASN.1 Module for RFC 5276

IANA Considerations IANA has assigned two object identifiers from the "SMI Security for LTANS Module Identifier" registry to identify the two ASN.1 modules in this document. The following object identifiers have been assigned: IANA Object Identifiers

OID Value	Description	Reference
1.3.6.1.5.5.11.0.1.2	id-mod-ers-v2	RFC 9169
1.3.6.1.5.5.11.0.5.2	id-mod-ers-scvp-v2	RFC 9169

Security Considerations Please see the security considerations in and . This document makes no changes to the security considerations in those documents. The ASN.1 modules in this document preserve bits on the wire as the ASN.1 modules that they replace.

References Normative References ITU-T Informative References CCITT CCITT Recommendation X.208