Configure invalid DSA public key size

This policy setting allows you to configure whether Office displays a digital signature as invalid because of the number of DSA public key bits used in the digital signature.

If you enable this policy setting, you can specify the number of bits that Office treats as invalid in a digital signature. For example: 512, 768, etc.

If you don't configure this policy setting, Office won't treat any digital signatures as invalid because of the number of bits in the public key.

Enabling this policy causes the minimum DSA public key size to be the next largest option.

Supported on: At least Windows 7



  1. 0
    Registry HiveHKEY_CURRENT_USER
    Registry Pathsoftware\policies\microsoft\office\16.0\common\signatures
    Value Nameinvaliddsabits
    Value TypeREG_DWORD
    Value0
  2. 512
    Registry HiveHKEY_CURRENT_USER
    Registry Pathsoftware\policies\microsoft\office\16.0\common\signatures
    Value Nameinvaliddsabits
    Value TypeREG_DWORD
    Value512
  3. 768
    Registry HiveHKEY_CURRENT_USER
    Registry Pathsoftware\policies\microsoft\office\16.0\common\signatures
    Value Nameinvaliddsabits
    Value TypeREG_DWORD
    Value768
  4. 1024
    Registry HiveHKEY_CURRENT_USER
    Registry Pathsoftware\policies\microsoft\office\16.0\common\signatures
    Value Nameinvaliddsabits
    Value TypeREG_DWORD
    Value1024


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