OfficeEncryptor Component

Properties Methods Events Config Settings Errors

The OfficeEncryptor component encrypts Office documents.

Syntax

nsoftware.SecureBlackbox.Officeencryptor

Remarks

OfficeEncryptor encrypts Office documents.

Property List

The following is the full list of the properties of the component with short descriptions. Click on the links for further details.


DocumentFormat	Defines the format of the Office document.
DocumentType	Defines the type of the Office document.
EncryptionAlgorithm	The encryption algorithm used to encrypt the document.
EncryptionType	The encryption type used to encrypt the document.
FIPSMode	Reserved.
InputBytes	Use this property to pass the input to component in byte array form.
InputFile	The Office file to be encrypted.
InputStream	Stream containing the Office document.
OutputBytes	Use this property to read the output the component object has produced.
OutputFile	Defines where to save the encrypted document.
OutputStream	The stream where the encrypted document would be saved.
Password	The password used for decryption.

Method List

The following is the full list of the methods of the component with short descriptions. Click on the links for further details.


Config	Sets or retrieves a configuration setting.
DoAction	Performs an additional action.
Encrypt	Encrypts the whole document.

Event List

The following is the full list of the events fired by the component with short descriptions. Click on the links for further details.


Error	Information about errors during signing.
Notification	This event notifies the application about an underlying control flow event.

Config Settings

The following is a list of config settings for the component with short descriptions. Click on the links for further details.


ChecksumAlgorithm	Specifies checksum algorithm that should be used.
EncryptDocumentProperties	Specifies if document properties should be encrypted.
HardenedKeyGeneration	Specifies if hardened Key generation should be used.
HashAlgorithm	Specifies hash algorithm that should be used.
RC4KeyBits	Specifies the number of key bits used for RC4 algorithm.
SaltSize	Specifies salt size that should be used.
SpinCount	Specifies spin count that should be used.
StartKeyGenerationAlgorithm	Specifies start key generation algorithm that should be used.
TempPath	Location where the temporary files are stored.
CheckKeyIntegrityBeforeUse	Enables or disable private key integrity check before use.
CookieCaching	Specifies whether a cookie cache should be used for HTTP(S) transports.
Cookies	Gets or sets local cookies for the component.
DefDeriveKeyIterations	Specifies the default key derivation algorithm iteration count.
EnableClientSideSSLFFDHE	Enables or disables finite field DHE key exchange support in TLS clients.
GlobalCookies	Gets or sets global cookies for all the HTTP transports.
HttpUserAgent	Specifies the user agent name to be used by all HTTP clients.
LogDestination	Specifies the debug log destination.
LogDetails	Specifies the debug log details to dump.
LogFile	Specifies the debug log filename.
LogFilters	Specifies the debug log filters.
LogFlushMode	Specifies the log flush mode.
LogLevel	Specifies the debug log level.
LogMaxEventCount	Specifies the maximum number of events to cache before further action is taken.
LogRotationMode	Specifies the log rotation mode.
MaxASN1BufferLength	Specifies the maximal allowed length for ASN.1 primitive tag data.
MaxASN1TreeDepth	Specifies the maximal depth for processed ASN.1 trees.
OCSPHashAlgorithm	Specifies the hash algorithm to be used to identify certificates in OCSP requests.
StaticDNS	Specifies whether static DNS rules should be used.
StaticIPAddress[domain]	Gets or sets an IP address for the specified domain name.
StaticIPAddresses	Gets or sets all the static DNS rules.
Tag	Allows to store any custom data.
TLSSessionGroup	Specifies the group name of TLS sessions to be used for session resumption.
TLSSessionLifetime	Specifies lifetime in seconds of the cached TLS session.
TLSSessionPurgeInterval	Specifies how often the session cache should remove the expired TLS sessions.
UseOwnDNSResolver	Specifies whether the client components should use own DNS resolver.
UseSharedSystemStorages	Specifies whether the validation engine should use a global per-process copy of the system certificate stores.
UseSystemOAEPAndPSS	Enforces or disables the use of system-driven RSA OAEP and PSS computations.
UseSystemRandom	Enables or disables the use of the OS PRNG.

DocumentFormat Property (OfficeEncryptor Component)

Defines the format of the Office document.

public OfficeencryptorDocumentFormats DocumentFormat { get; }

enum OfficeencryptorDocumentFormats {
  odfUnknown,
  odfBinary,
  odfOpenXML,
  odfOpenXPS,
  odfOpenDocument
}

Public ReadOnly Property DocumentFormat As OfficeencryptorDocumentFormats

Enum OfficeencryptorDocumentFormats
  odfUnknown
  odfBinary
  odfOpenXML
  odfOpenXPS
  odfOpenDocument
End Enum

Default Value

Remarks

This property contains the Office document format.


odfUnknown	`0`	Unknown document format
odfBinary	`1`	Binary Office document
odfOpenXML	`2`	OpenXML Office document
odfOpenXPS	`3`	OpenXPS document
odfOpenDocument	`4`	OpenOffice document

This property is read-only and not available at design time.

DocumentType Property (OfficeEncryptor Component)

Defines the type of the Office document.

Syntax

C#
VB.NET

public string DocumentType { get; }

Public ReadOnly Property DocumentType As String

Default Value

Remarks

This property contains the Office document type.

This property is read-only and not available at design time.

EncryptionAlgorithm Property (OfficeEncryptor Component)

The encryption algorithm used to encrypt the document.

Syntax

C#
VB.NET

public string EncryptionAlgorithm { get; set; }

Public Property EncryptionAlgorithm As String

Default Value

"Default"

Remarks

This property contains the encryption algorithm used to encrypt the Office document.

Supported values:

For Binary Office documents


SB_SYMMETRIC_ALGORITHM_RC4	`RC4`

For OpenXML Office documents (default = SB_SYMMETRIC_ALGORITHM_AES256)


SB_SYMMETRIC_ALGORITHM_RC2	`RC2`
SB_SYMMETRIC_ALGORITHM_RC4	`RC4`
SB_SYMMETRIC_ALGORITHM_DES	`DES`
SB_SYMMETRIC_ALGORITHM_3DES	`3DES`
SB_SYMMETRIC_ALGORITHM_AES128	`AES128`
SB_SYMMETRIC_ALGORITHM_AES192	`AES192`
SB_SYMMETRIC_ALGORITHM_AES256	`AES256`

For OpenOffice documents (default = SB_SYMMETRIC_ALGORITHM_BLOWFISH)


SB_SYMMETRIC_ALGORITHM_AES128	`AES128`
SB_SYMMETRIC_ALGORITHM_AES192	`AES192`
SB_SYMMETRIC_ALGORITHM_AES256	`AES256`
SB_SYMMETRIC_ALGORITHM_BLOWFISH	`Blowfish`

EncryptionType Property (OfficeEncryptor Component)

The encryption type used to encrypt the document.

Syntax

C#
VB.NET

public OfficeencryptorEncryptionTypes EncryptionType { get; set; }

enum OfficeencryptorEncryptionTypes {
  oetDefault,
  oetBinaryRC4,
  oetBinaryRC4CryptoAPI,
  oetOpenXMLStandard,
  oetOpenXMLAgile,
  oetOpenDocument
}

Public Property EncryptionType As OfficeencryptorEncryptionTypes

Enum OfficeencryptorEncryptionTypes
  oetDefault
  oetBinaryRC4
  oetBinaryRC4CryptoAPI
  oetOpenXMLStandard
  oetOpenXMLAgile
  oetOpenDocument
End Enum

Default Value

Remarks

This property contains the encryption type used to encrypt the Office document.

Supported values:

oetDefault uses default encryption depending on Office document format.

oetBinaryRC4 uses RC4 encryption for Binary Office documents.

oetBinaryRC4CryptoAPI uses RC4 Crypto API encryption for Binary Office documents.

oetOpenXMLStandard uses standard encryption for OpenXML Office documents.

oetOpenXMLAgile uses agile encryption for OpenXML Office documents.

oetOpenDocument uses standard encryption for OpenOffice documents.

FIPSMode Property (OfficeEncryptor Component)

Reserved.

Syntax

C#
VB.NET

public bool FIPSMode { get; set; }

Public Property FIPSMode As Boolean

Default Value

False

Remarks

This property is reserved for future use.

InputBytes Property (OfficeEncryptor Component)

Use this property to pass the input to component in byte array form.

Syntax

C#
VB.NET

public byte[] InputBytes { get; set; }

Public Property InputBytes As Byte()

Remarks

Assign a byte array containing the data to be processed to this property.

This property is not available at design time.

InputFile Property (OfficeEncryptor Component)

The Office file to be encrypted.

Syntax

C#
VB.NET

public string InputFile { get; set; }

Public Property InputFile As String

Default Value

Remarks

Provide the path to the Office document to be encrypted.

InputStream Property (OfficeEncryptor Component)

Stream containing the Office document.

Syntax

C#
VB.NET

public System.IO.Stream InputStream { get; set; }

Public Property InputStream As System.IO.Stream

Default Value

null

Remarks

Use this property to feed the document to the component via a stream.

This property is not available at design time.

OutputBytes Property (OfficeEncryptor Component)

Use this property to read the output the component object has produced.

Syntax

C#
VB.NET

public byte[] OutputBytes { get; }

Public ReadOnly Property OutputBytes As Byte()

Remarks

Read the contents of this property after the operation has completed to read the produced output. This property will only be set if the OutputFile and OutputStream properties had not been assigned.

This property is read-only and not available at design time.

OutputFile Property (OfficeEncryptor Component)

Defines where to save the encrypted document.

Syntax

C#
VB.NET

public string OutputFile { get; set; }

Public Property OutputFile As String

Default Value

Remarks

Specifies the path where the encrypted Office document should be saved.

OutputStream Property (OfficeEncryptor Component)

The stream where the encrypted document would be saved.

Syntax

C#
VB.NET

public System.IO.Stream OutputStream { get; set; }

Public Property OutputStream As System.IO.Stream

Default Value

null

Remarks

Use this property to save the encrypted document to the stream.

This property is not available at design time.

Password Property (OfficeEncryptor Component)

The password used for decryption.

Syntax

C#
VB.NET

public string Password { get; set; }

Public Property Password As String

Default Value

Remarks

Use this property to provide the decryption password.

Config Method (OfficeEncryptor Component)

Sets or retrieves a configuration setting.

Syntax

C#
VB.NET

public string Config(string configurationString);

Public Function Config(ByVal ConfigurationString As String) As String

Remarks

Config is a generic method available in every component. It is used to set and retrieve configuration settings for the component.

These settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the component, access to these internal properties is provided through the Config method.

To set a configuration setting named PROPERTY, you must call Config("PROPERTY=VALUE"), where VALUE is the value of the setting expressed as a string. For boolean values, use the strings "True", "False", "0", "1", "Yes", or "No" (case does not matter).

To read (query) the value of a configuration setting, you must call Config("PROPERTY"). The value will be returned as a string.

DoAction Method (OfficeEncryptor Component)

Performs an additional action.

Syntax

C#
VB.NET

public string DoAction(string actionID, string actionParams);

Public Function DoAction(ByVal ActionID As String, ByVal ActionParams As String) As String

Remarks

DoAction is a generic method available in every component. It is used to perform an additional action introduced after the product major release. The list of actions is not fixed, and may be flexibly extended over time.

The unique identifier (case insensitive) of the action is provided in the ActionID parameter.

ActionParams contains the value of a single parameter, or a list of multiple parameters for the action in the form of PARAM1=VALUE1;PARAM2=VALUE2;....

Encrypt Method (OfficeEncryptor Component)

Encrypts the whole document.

Syntax

C#
VB.NET

public void Encrypt();

Public Sub Encrypt()

Remarks

Call this method to encrypt the document.

Error Event (OfficeEncryptor Component)

Information about errors during signing.

Syntax

C#
VB.NET

public event OnErrorHandler OnError;

public delegate void OnErrorHandler(object sender, OfficeencryptorErrorEventArgs e);

public class OfficeencryptorErrorEventArgs : EventArgs {
  public int ErrorCode { get; }
  public string Description { get; }
}

Public Event OnError As OnErrorHandler

Public Delegate Sub OnErrorHandler(sender As Object, e As OfficeencryptorErrorEventArgs)

Public Class OfficeencryptorErrorEventArgs Inherits EventArgs
  Public ReadOnly Property ErrorCode As Integer
  Public ReadOnly Property Description As String
End Class

Remarks

This event is fired in case of exceptional conditions during the office document processing.

ErrorCode contains an error code and Description contains a textual description of the error.

Notification Event (OfficeEncryptor Component)

This event notifies the application about an underlying control flow event.

Syntax

C#
VB.NET

public event OnNotificationHandler OnNotification;

public delegate void OnNotificationHandler(object sender, OfficeencryptorNotificationEventArgs e);

public class OfficeencryptorNotificationEventArgs : EventArgs {
  public string EventID { get; }
  public string EventParam { get; }
}

Public Event OnNotification As OnNotificationHandler

Public Delegate Sub OnNotificationHandler(sender As Object, e As OfficeencryptorNotificationEventArgs)

Public Class OfficeencryptorNotificationEventArgs Inherits EventArgs
  Public ReadOnly Property EventID As String
  Public ReadOnly Property EventParam As String
End Class

Remarks

The component fires this event to let the application know about some event, occurrence, or milestone in the component. For example, it may fire to report completion of the document processing. The list of events being reported is not fixed, and may be flexibly extended over time.

The unique identifier of the event is provided in the EventID parameter. EventParam contains any parameters accompanying the occurrence. Depending on the type of the component, the exact action it is performing, or the document being processed, one or both may be omitted.

This component can fire this event with the following EventID values:


DocumentLoaded	Reports the completion of Office document processing by the component. Use the event handler to access document-related information. The EventParam value passed with this EventID is empty.
SignatureLoaded	Reports the completion of signature loading. When this event fires, you can expect the signatures to be fully loaded. The EventParam value passed with this EventID is empty.

Config Settings (OfficeEncryptor Component)

The component accepts one or more of the following configuration settings. Configuration settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the component, access to these internal properties is provided through the Config method.

OfficeEncryptor Config Settings

ChecksumAlgorithm: Specifies checksum algorithm that should be used.

Specifies checksum algorithm when OpenOffice documents is used.

EncryptDocumentProperties: Specifies if document properties should be encrypted.

Specifies if the document properties should be encrypted when RC4 Crypto API encryption type for Binary Office documents is used.

HardenedKeyGeneration: Specifies if hardened Key generation should be used.

Specifies if hardened Key generation should be used when RC4 Crypto API encryption type for Binary Office documents is used.

HashAlgorithm: Specifies hash algorithm that should be used.

Specifies hash algorithm when Agile encryption type for OpenXML documents is used.

RC4KeyBits: Specifies the number of key bits used for RC4 algorithm.

Specifies the number of key bits when RC4 Crypto API encryption type for Binary Office documents is used.

SaltSize: Specifies salt size that should be used.

Specifies size of the random salt when Agile encryption type for OpenXML documents is used.

SpinCount: Specifies spin count that should be used.

Specifies the number of times to iterate the password hash when creating the key used to encrypt data when Agile encryption type for OpenXML documents is used.

StartKeyGenerationAlgorithm: Specifies start key generation algorithm that should be used.

Specifies start key generation algorithm when OpenOffice documents is used.

TempPath: Location where the temporary files are stored.

This setting specifies an absolute path to the location on disk where temporary files are stored.

Base Config Settings

CheckKeyIntegrityBeforeUse: Enables or disable private key integrity check before use.

This global property enables or disables private key material check before each signing operation. This slows down performance a bit, but prevents a selection of attacks on RSA keys where keys with unknown origins are used.

You can switch this property off to improve performance if your project only uses known, good private keys.

CookieCaching: Specifies whether a cookie cache should be used for HTTP(S) transports.

Set this property to enable or disable cookies caching for the component.

Supported values are:


off		No caching (default)
local		Local caching
global		Global caching

Cookies: Gets or sets local cookies for the component.

Use this property to get cookies from the internal cookie storage of the component and/or restore them back between application sessions.

DefDeriveKeyIterations: Specifies the default key derivation algorithm iteration count.

This global property sets the default number of iterations for all supported key derivation algorithms. Note that you can provide the required number of iterations by using properties of the relevant key generation component; this global setting is used in scenarios where specific iteration count is not or cannot be provided.

EnableClientSideSSLFFDHE: Enables or disables finite field DHE key exchange support in TLS clients.

This global property enables or disables support for finite field DHE key exchange methods in TLS clients. FF DHE is a slower algorithm if compared to EC DHE; enabling it may result in slower connections.

This setting only applies to sessions negotiated with TLS version 1.3.

GlobalCookies: Gets or sets global cookies for all the HTTP transports.

Use this property to get cookies from the GLOBAL cookie storage or restore them back between application sessions. These cookies will be used by all the components that have its CookieCaching property set to "global".

HttpUserAgent: Specifies the user agent name to be used by all HTTP clients.

This global setting defines the User-Agent field of the HTTP request provides information about the software that initiates the request. This value will be used by all the HTTP clients including the ones used internally in other components.

LogDestination: Specifies the debug log destination.

Contains a comma-separated list of values that specifies where debug log should be dumped.

Supported values are:


file		File
console		Console
systemlog		System Log (supported for Android only)
debugger		Debugger (supported for VCL for Windows and .Net)

LogDetails: Specifies the debug log details to dump.

Contains a comma-separated list of values that specifies which debug log details to dump.

Supported values are:


time		Current time
level		Level
package		Package name
module		Module name
class		Class name
method		Method name
threadid		Thread Id
contenttype		Content type
content		Content
all		All details

LogFile: Specifies the debug log filename.

Use this property to provide a path to the log file.

LogFilters: Specifies the debug log filters.

Contains a comma-separated list of value pairs ("name:value") that describe filters.

Supported filter names are:


exclude-package		Exclude a package specified in the value
exclude-module		Exclude a module specified in the value
exclude-class		Exclude a class specified in the value
exclude-method		Exclude a method specified in the value
include-package		Include a package specified in the value
include-module		Include a module specified in the value
include-class		Include a class specified in the value
include-method		Include a method specified in the value

LogFlushMode: Specifies the log flush mode.

Use this property to set the log flush mode. The following values are defined:


none		No flush (caching only)
immediate		Immediate flush (real-time logging)
maxcount		Flush cached entries upon reaching LogMaxEventCount entries in the cache.

LogLevel: Specifies the debug log level.

Use this property to provide the desired debug log level.

Supported values are:


none		None (by default)
fatal		Severe errors that cause premature termination.
error		Other runtime errors or unexpected conditions.
warning		Use of deprecated APIs, poor use of API, 'almost' errors, other runtime situations that are undesirable or unexpected, but not necessarily "wrong".
info		Interesting runtime events (startup/shutdown).
debug		Detailed information on flow of through the system.
trace		More detailed information.

LogMaxEventCount: Specifies the maximum number of events to cache before further action is taken.

Use this property to specify the log event number threshold. This threshold may have different effects, depending on the rotation setting and/or the flush mode.

The default value of this setting is 100.

LogRotationMode: Specifies the log rotation mode.

Use this property to set the log rotation mode. The following values are defined:


none		No rotation
deleteolder		Delete older entries from the cache upon reaching LogMaxEventCount
keepolder		Keep older entries in the cache upon reaching LogMaxEventCount (newer entries are discarded)

MaxASN1BufferLength: Specifies the maximal allowed length for ASN.1 primitive tag data.

This global property limits the maximal allowed length for ASN.1 tag data for non-content-carrying structures, such as certificates, CRLs, or timestamps. It does not affect structures that can carry content, such as CMS/CAdES messages. This is a security property aiming at preventing DoS attacks.

MaxASN1TreeDepth: Specifies the maximal depth for processed ASN.1 trees.

This global property limits the maximal depth of ASN.1 trees that the component can handle without throwing an error. This is a security property aiming at preventing DoS attacks.

OCSPHashAlgorithm: Specifies the hash algorithm to be used to identify certificates in OCSP requests.

This global setting defines the hash algorithm to use in OCSP requests during chain validation. Some OCSP responders can only use older algorithms, in which case setting this property to SHA1 may be helpful.

StaticDNS: Specifies whether static DNS rules should be used.

Set this property to enable or disable static DNS rules for the component. Works only if UseOwnDNSResolver is set to true.

Supported values are:


none		No static DNS rules (default)
local		Local static DNS rules
global		Global static DNS rules

StaticIPAddress[domain]: Gets or sets an IP address for the specified domain name.

Use this property to get or set an IP address for the specified domain name in the internal (of the component) or global DNS rules storage depending on the StaticDNS value. The type of the IP address (IPv4 or IPv6) is determined automatically. If both addresses are available, they are devided by the | (pipe) character.

StaticIPAddresses: Gets or sets all the static DNS rules.

Use this property to get static DNS rules from the current rules storage or restore them back between application sessions. If StaticDNS of the component is set to "local", the property returns/restores the rules from/to the internal storage of the component. If StaticDNS of the component is set to "global", the property returns/restores the rules from/to the GLOBAL storage. The rules list is returned and accepted in JSON format.

Tag: Allows to store any custom data.

Use this config property to store any custom data.

TLSSessionGroup: Specifies the group name of TLS sessions to be used for session resumption.

Use this property to limit the search of chached TLS sessions to the specified group. Sessions from other groups will be ignored. By default, all sessions are cached with an empty group name and available to all the components.

TLSSessionLifetime: Specifies lifetime in seconds of the cached TLS session.

Use this property to specify how much time the TLS session should be kept in the session cache. After this time, the session expires and will be automatically removed from the cache. Default value is 300 seconds (5 minutes).

TLSSessionPurgeInterval: Specifies how often the session cache should remove the expired TLS sessions.

Use this property to specify the time interval of purging the expired TLS sessions from the session cache. Default value is 60 seconds (1 minute).

UseOwnDNSResolver: Specifies whether the client components should use own DNS resolver.

Set this global property to false to force all the client components to use the DNS resolver provided by the target OS instead of using own one.

UseSharedSystemStorages: Specifies whether the validation engine should use a global per-process copy of the system certificate stores.

Set this global property to false to make each validation run use its own copy of system certificate stores.

UseSystemOAEPAndPSS: Enforces or disables the use of system-driven RSA OAEP and PSS computations.

This global setting defines who is responsible for performing RSA-OAEP and RSA-PSS computations where the private key is stored in a Windows system store and is exportable. If set to true, SBB will delegate the computations to Windows via a CryptoAPI call. Otherwise, it will export the key material and perform the computations using its own OAEP/PSS implementation.

This setting only applies to certificates originating from a Windows system store.

UseSystemRandom: Enables or disables the use of the OS PRNG.

Use this global property to enable or disable the use of operating system-driven pseudorandom number generation.

Trappable Errors (OfficeEncryptor Component)

OfficeEncryptor Errors


	1048577 Invalid parameter value (`SB_ERROR_INVALID_PARAMETER`)
	1048578 Component is configured incorrectly (`SB_ERROR_INVALID_SETUP`)
	1048579 Operation cannot be executed in the current state (`SB_ERROR_INVALID_STATE`)
	1048580 Attempt to set an invalid value to a property (`SB_ERROR_INVALID_VALUE`)
	1048581 Certificate does not have its private key loaded (`SB_ERROR_NO_PRIVATE_KEY`)
	1048581 Cancelled by the user (`SB_ERROR_CANCELLED_BY_USER`)
	24117249 Input file does not exist (`SB_ERROR_OFFICE_INPUTFILE_NOT_EXISTS`)
	24117250 Unsupported document format (`SB_ERROR_OFFICE_UNSUPPORTED_DOCUMENT_FORMAT`)
	24117251 Document cannot be signed (`SB_ERROR_OFFICE_DOCUMENT_NOT_SIGNABLE`)
	24117252 Document is not signed (`SB_ERROR_OFFICE_DOCUMENT_NOT_SIGNED`)
	24117253 Document is encrypted (`SB_ERROR_OFFICE_DOCUMENT_ENCRYPTED`)
	24117254 Document cannot be encrypted (`SB_ERROR_OFFICE_DOCUMENT_NOT_ENCRYPTABLE`)
	24117255 Document is not encrypted (`SB_ERROR_OFFICE_DOCUMENT_NOT_ENCRYPTED`)
	24117256 Unknown encryption algorithm (`SB_ERROR_OFFICE_DOCUMENT_UNKNOWN_ENCRYPTION`)
	24117257 Invalid password (`SB_ERROR_OFFICE_INVALID_PASSWORD`)
	24117258 Signature not found (`SB_ERROR_OFFICE_SIGNATURE_NOT_FOUND`)