XAdESCertificatesPassword property (BizCrypto XML Sign Task)
Contains password to the signing certificates.
Use this property to specify the password to decrypt signing certificates.
Note that this property is sensitive, and is controlled by the project property ProtectionLevel, as it is described in the article: Setting the Protection Level of Packages. For example, if ProtectionLevel is set to DontSaveSensitive, passwords (and other sensitive data) will be suppressed when the packadge is saved.