Policy
Configure invalid hashing algorithm
Microsoft Office
Policy overview
Key metadata and intent for this policy.
This policy setting allows you to configure whether Office displays a digital signature as invalid when it contains specific hash algorithms. If you enable this policy setting, you can specify the weakest hash algorithm that Office treats as invalid. If you enable this policy setting, you can specify any of the following algorithms: - MD5 - SHA1 - SHA256 - SHA384 If you don’t configure this policy setting, Office won’t treat digital signatures as invalid because of the hashing algorithm. For example, if you set MD5 as the invalid hashing algorithm Office treats MD5 signatures as invalid.
Registry values
How enabled and disabled states update the registry.
No explicit registry values are set for enabled or disabled states.
Policy elements
Inputs and configuration options exposed by this policy.
| Scope | Element | Type | Registry mapping | Constraints & behavior | Copy |
|---|---|---|---|---|---|
| User | L_SelectDigitalSignatureHashingAlgorithmDropID ID L_SelectDigitalSignatureHashingAlgorithmDropID | enum | Path software\policies\microsoft\office\16.0\common\signatures Value name invalidhashalg Type REG_SZ | Options: MD5 (md5), SHA1 (sha1), SHA256 (sha256), SHA384 (sha384) |