Index_H

H

Hardware Compatibility List (HCL), 680

Help desk, 387

Hierarchical trust model, 497–98

CAs, 497

delegation support, 497

hierarchy building, 498

illustrated, 498

superior-subordinate relationship, 497

trust constraint inheritance in, 540–41

See also PKI trust models

Hierarchical trust relationships

defining, 521

example, 522

Higher-level keying material, 145

HTTP

headers, 211

Passport use, 241

proxies, 235–39

query strings, 252

WFetch Passport authentication trace, 258

HTTP authentication, 211–21

anonymous access, 213–14

back-end anonymous process, 213

basic, 214–18

digest, 218–21

exchange illustration, 212

Hybrid PKI solutions, 607

Hybrid trust models, 502

Hypertext Transport Protocol. See HTTP