Policy

Configure legacy RSA public key size

Microsoft Office 5532.1000

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Policy overview

Key metadata and intent for this policy.

ClassUser
CategoryMicrosoft Office 2016 > Security Settings > Digital Signatures
Supported onWindows7

This policy setting allows you to configure whether Office displays a digital signature as legacy because of the number of RSA 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 legacy 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 legacy because of the number of bits in the public key. Enabling this policy causes the minimum RSA public key size to be the next largest option.

Internal name
L_SelectDigitalSignatureLegacyRSABits
Policy ID
417f7a962e56
Elements
1

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.

ElementTypeRegistry mappingConstraints & behavior
L_SelectDigitalSignatureHashingAlgorithmDropID
ID L_SelectDigitalSignatureHashingAlgorithmDropID
enum
HKCU\software\policies\microsoft\office\16.0\common\signatures\legacyrsabits
Type REG_DWORD
Options: $(string.L_SelectDigitalSignatureAlgorithmBitsStr0) (0), $(string.L_SelectDigitalSignatureAlgorithmBitsStr1) (512), $(string.L_SelectDigitalSignatureAlgorithmBitsStr2) (768), $(string.L_SelectDigitalSignatureAlgorithmBitsStr3) (1024), $(string.L_SelectDigitalSignatureAlgorithmBitsStr4) (1536), $(string.L_SelectDigitalSignatureAlgorithmBitsStr5) (2048)

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