62443-3-3 © IEC:2013(E) – 3 –
Rationale and supplemental guidance ....................................................... 30
5.8.2
Requirement enhancements ...................................................................... 30
5.8.3
Security levels ........................................................................................... 30
5.8.4
5.9
SR 1.7 – Strength of password-based authentication ............................................. 30
Requirement .............................................................................................. 30
5.9.1
Rationale and supplemental guidance ....................................................... 30
5.9.2
Requirement enhancements ...................................................................... 31
5.9.3
Security levels ........................................................................................... 31
5.9.4
5.10
SR 1.8 – Public key infrastructure (PKI) certificates ............................................... 31
Requirement .............................................................................................. 31
5.10.1
Rationale and supplemental guidance ....................................................... 31
5.10.2
Requirement enhancements ...................................................................... 32
5.10.3
Security levels ........................................................................................... 32
5.10.4
5.11
SR 1.9 – Strength of public key authentication ...................................................... 32
Requirement .............................................................................................. 32
5.11.1
Rationale and supplemental guidance ....................................................... 32
5.11.2
Requirement enhancements ...................................................................... 33
5.11.3
Security levels ........................................................................................... 33
5.11.4
5.12
SR 1.10 – Authenticator feedback ......................................................................... 33
Requirement .............................................................................................. 33
5.12.1
Rationale and supplemental guidance ....................................................... 33
5.12.2
Requirement enhancements ...................................................................... 33
5.12.3
Security levels ........................................................................................... 33
5.12.4
5.13
SR 1.11 – Unsuccessful login attempts .................................................................. 34
Requirement .............................................................................................. 34
5.13.1
Rationale and supplemental guidance ....................................................... 34
5.13.2
Requirement enhancements ...................................................................... 34
5.13.3
Security levels ........................................................................................... 34
5.13.4
5.14
SR 1.12 – System use notification ......................................................................... 34
Requirement .............................................................................................. 34
5.14.1
Rationale and supplemental guidance ....................................................... 34
5.14.2
Requirement enhancements ...................................................................... 35
5.14.3
Security levels ........................................................................................... 35
5.14.4
5.15
SR 1.13 – Access via untrusted networks .............................................................. 35
Requirement .............................................................................................. 35
5.15.1
Rationale and supplemental guidance ....................................................... 35
5.15.2
Requirement enhancements ...................................................................... 35
5.15.3
Security levels ........................................................................................... 35
5.15.4
6
FR 2 – Use control ......................................................................................................... 36
6.1
Purpose and SL-C(UC) descriptions ...................................................................... 36
6.2
Rationale ............................................................................................................... 36
6.3
SR 2.1 – Authorization enforcement ...................................................................... 36
Requirement .............................................................................................. 36
6.3.1
Rationale and supplemental guidance ....................................................... 36
6.3.2
Requirement enhancements ...................................................................... 37
6.3.3
Security levels ........................................................................................... 37
6.3.4
6.4
SR 2.2 – Wireless use control ............................................................................... 37
Requirement .............................................................................................. 37
6.4.1
Rationale and supplemental guidance ....................................................... 38
6.4.2
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