Installer.FileSignatureInfo method
The FileSignatureInfo method of the Installer object takes the path to a file and returns a SAFEARRAY of bytes that represent the hash or the encoded certificate. The values can then be used to populate the MsiDigitalSignature, MsiPatchCertificate, and MsiDigitalCertificate tables.
For more information, see the SAFEARRAY Data Type.
Syntax
Installer.FileSignatureInfo(
FilePath,
Options,
Format
)
Parameters
-
FilePath
-
Full path to a file that is digitally signed.
When populating the MsiDigitalSignature and MsiDigitalCertificate tables, FilePath points to a digitally signed cabinet. When populating the MsiPatchCertificate and MsiDigitalCertificate tables, FilePath points to a digitally signed patch.
-
Options
-
Special error case flags.
Flag Meaning - msiSignatureOptionInvalidHashFatal
- 1
With Options set to msiSignatureOptionInvalidHashFatal, FileSignatureInfo always returns a fatal error for an invalid hash.
If Options is not set to msiSignatureOptionInvalidHashFatal and Format is set to msiSignatureInfoCertificate, FileSignatureInfo does not return an error for an invalid hash. -
Format
-
The requested signature information.
Flag Meaning - msiSignatureInfoCertificate
- 0
Returns a SAFEARRAY of bytes that represent the encoded certificate. - msiSignatureInfoHash
- 1
Returns a SAFEARRAY of bytes that represent the hash.
Return value
If successful, the method returns a SAFEARRAY of bytes that contain either the hash or encoded certificate.
Remarks
To author a fully verified signed installation by using automation, use the FileSignatureInfo method to populate the MsiDigitalCertificate, MsiPatchCertificate, and MsiDigitalSignature tables. For more information, see Authoring a Fully Verified Signed Installation Using Automation.
Requirements
| Requirement | Value |
|---|---|
| Version |
Windows Installer 5.0 on Windows Server 2012, Windows 8, Windows Server 2008 R2 or Windows 7. Windows Installer 4.0 or Windows Installer 4.5 on Windows Server 2008 or Windows Vista. Windows Installer on Windows Server 2003 or Windows XP |
| DLL |
|
| IID |
IID_IInstaller is defined as 000C1090-0000-0000-C000-000000000046 |
See also