Siemens PKI Certificate Authority (CA) Hierarchy Status July 2011
Siemens PKI CA Hierarchy Overview (1) Public Root (available in common OS / Browsers) Baltimore CyberTrust Root (Verizon) Siemens Trust Center Root CA Siemens Root (member of European Bridge-CA) Siemens Internet CA Class Internet Internet EE Enc Class EE Auth Medium Strength Auth. Cross-signed
Siemens PKI CA Hierarchy Overview (2) Public Root (available in common OS / Browsers) Baltimore CyberTrust Root (Verizon) Siemens Trust Center Root CA Siemens Root (member of European Bridge-CA) Siemens Internet CA Class Internet Internet EE Enc Class EE Auth Medium Strength Auth. External External End-Entity Encryption Multipurpose for General Business Partners End-Entity Authentication / Signature Smart Card Internal Internal Code- Signing Medium Strength Authentication Soft-
CA Hierarchy 2011 Siemens internal CA Hierarchy Siemens Trust Center Root-CA V2.0 ZZZZZZV1 New CA Siemens EE Auth 2011 ZZZZZZV2 Siemens EE Enc 2011 ZZZZZZV3 Siemens Code Signing 2011 ZZZZZZV4 Siemens Multipurpose 2011 ZZZZZZV5 Siemens Medium Strength Authentication 2011 ZZZZZZV6 Siemens 2011 ZZZZZZV7 Siemens Class PGP Page 4
CA Hierarchy 2011 Public Root for External Recognition Siemens Trust Center Root-CA V2.0 ZZZZZZV1 Baltimore CyberTrust Root CA (available in common OS / Browsers) Internal Chain Siemens EE Enc 2011 ZZZZZZV3 Siemens Multipurpose 2011 ZZZZZZV5 Siemens Internet CA V1.0 ZZZZZZV0 External Chain Siemens Internet Code Signing 2011 ZZZZZZV8 Siemens Class Internet 2011 ZZZZZZV9 Page 5
CA Hierarchy from 2003 till 2011 Siemens Business Services Trust Center Root-CA V1.1.1 Siemens Root-CA for Special s 2007 Siemens EE Auth ZZZZZZVF Siemens Class CS ZZZZZZVC Siemens EE Enc ZZZZZZVE Siemens Class V2.0 ZZZZZZVT Siemens Class MP ZZZZZZVA Siemens Class MSA ZZZZZZVM Page 6 GTE CyberTrust Global Root Siemens Class Internet V1.0 ZZZZZZVI Siemens Class PGP
CA required by Business Partners for secure Communication with Siemens (e. g. S/MIME E-Mail Encryption) Encryption Authentication / Digital Signatures Baltimore CyberTrust Root CA (available in common OS / Browsers) Siemens Trust Center Root-CA V2.0 ZZZZZZV1 Siemens Internet CA V1.0 ZZZZZZV0 EE Enc 2011 ZZZZZZV3 EE Enc ZZZZZZVE (till 2011 ) ZZZZZZV5 ZZZZZZVA (till 2011) EE Auth 2011 ZZZZZZV2 EE Auth ZZZZZZVF (till 2011) s for encryption certificates for Siemens employees and contractors s for multi-purpose certificates for General Business Partner s for authentication/ signing certificates for Siemens employees and contractors (smart card only) Page 7