Get a blob property from the signature field. Available blob parameters are: -BiometricHash A message digest computed over the document hash and the unencrypted biometric data, empty if not present. - Contents The Contents entry of the signature dictionary, that is, the digital signature (PDF documents only). - Signature The PKCS #1 or DER-encoded PKCS #7 signature. . Additional, you can store your own blobs in the signature by using a name starting with "Prop_", except for "Prop_AuthTime", "Prop_AuthType", "Prop_BiometricData", and "Prop_Build", which are reserved), see de.softpro.doc.SignDocSignatureParameters.setBlob().

public byte[] getSignatureBlob(
	SignatureBlob name
)