Select digital signature hashing algorithm

This policy setting allows you to configure the hashing algorithm Office 2016 applications use to confirm digital signatures.

If you enable this policy setting, you can specify any of the following SHA standard functions:
- SHA1
- SHA256
- SHA384
- SHA512

If you disable or do not configure this policy setting, the default value of SHA1 is used.

Supported on: At least Windows 7



  1. SHA1
    Registry HiveHKEY_CURRENT_USER
    Registry Pathsoftware\policies\microsoft\office\16.0\common\signatures
    Value Namesignaturehashalg
    Value TypeREG_SZ
    Valuesha1
  2. SHA256
    Registry HiveHKEY_CURRENT_USER
    Registry Pathsoftware\policies\microsoft\office\16.0\common\signatures
    Value Namesignaturehashalg
    Value TypeREG_SZ
    Valuesha256
  3. SHA384
    Registry HiveHKEY_CURRENT_USER
    Registry Pathsoftware\policies\microsoft\office\16.0\common\signatures
    Value Namesignaturehashalg
    Value TypeREG_SZ
    Valuesha384
  4. SHA512
    Registry HiveHKEY_CURRENT_USER
    Registry Pathsoftware\policies\microsoft\office\16.0\common\signatures
    Value Namesignaturehashalg
    Value TypeREG_SZ
    Valuesha512


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