PDFDecryptor Module

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The PDFDecryptor module decrypts PDF documents.

Syntax

SecureBlackbox.Pdfdecryptor

Remarks

PDFDecryptor decrypts PDF documents encrypted with passwords or certificates.

Property List

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

Method List

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

Event List

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

Config Settings

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

DecryptionCertificate Property (PDFDecryptor Module)

A decryption certificate.

Syntax

• Swift
• Objective-C

public var decryptionCertificate: Certificate {
  get {...}
  set {...}
}

@property (nonatomic,readonly,assign,getter=decryptionCertificateBytes) NSData* decryptionCertificateBytes;

- (NSData*)decryptionCertificateBytes;

@property (nonatomic,readwrite,assign,getter=decryptionCertificateHandle,setter=setDecryptionCertificateHandle:) long long decryptionCertificateHandle;

- (long long)decryptionCertificateHandle;
- (void)setDecryptionCertificateHandle :(long long)newDecryptionCertificateHandle;

 

Default Value

""

Remarks

Use this property to provide the decryption certificate. The certificate should have a private key associated with it.

DocumentInfo Property (PDFDecryptor Module)

Contains information about the document properties.

Syntax

• Swift
• Objective-C

public var documentInfo: PDFDocumentInfo {
  get {...}
}

@property (nonatomic,readonly,assign,getter=documentInfoEncryptionAlgorithm) NSString* documentInfoEncryptionAlgorithm;

- (NSString*)documentInfoEncryptionAlgorithm;

@property (nonatomic,readonly,assign,getter=documentInfoEncryptionType) int documentInfoEncryptionType;

- (int)documentInfoEncryptionType;

@property (nonatomic,readonly,assign,getter=documentInfoMetadataEncrypted) BOOL documentInfoMetadataEncrypted;

- (BOOL)documentInfoMetadataEncrypted;

@property (nonatomic,readonly,assign,getter=documentInfoPermissions) int documentInfoPermissions;

- (int)documentInfoPermissions;

 

Default Value

""

Remarks

Use this property to access general parameters of the document being processed. A good place to check this property is in the handler of the DocumentLoaded event.

ExternalCrypto Property (PDFDecryptor Module)

Provides access to external signing and DC parameters.

Syntax

• Swift
• Objective-C

public var externalCrypto: ExternalCrypto {
  get {...}
}

@property (nonatomic,readwrite,assign,getter=externalCryptoAsyncDocumentID,setter=setExternalCryptoAsyncDocumentID:) NSString* externalCryptoAsyncDocumentID;

- (NSString*)externalCryptoAsyncDocumentID;
- (void)setExternalCryptoAsyncDocumentID :(NSString*)newExternalCryptoAsyncDocumentID;

@property (nonatomic,readwrite,assign,getter=externalCryptoCustomParams,setter=setExternalCryptoCustomParams:) NSString* externalCryptoCustomParams;

- (NSString*)externalCryptoCustomParams;
- (void)setExternalCryptoCustomParams :(NSString*)newExternalCryptoCustomParams;

@property (nonatomic,readwrite,assign,getter=externalCryptoData,setter=setExternalCryptoData:) NSString* externalCryptoData;

- (NSString*)externalCryptoData;
- (void)setExternalCryptoData :(NSString*)newExternalCryptoData;

@property (nonatomic,readwrite,assign,getter=externalCryptoExternalHashCalculation,setter=setExternalCryptoExternalHashCalculation:) BOOL externalCryptoExternalHashCalculation;

- (BOOL)externalCryptoExternalHashCalculation;
- (void)setExternalCryptoExternalHashCalculation :(BOOL)newExternalCryptoExternalHashCalculation;

@property (nonatomic,readwrite,assign,getter=externalCryptoHashAlgorithm,setter=setExternalCryptoHashAlgorithm:) NSString* externalCryptoHashAlgorithm;

- (NSString*)externalCryptoHashAlgorithm;
- (void)setExternalCryptoHashAlgorithm :(NSString*)newExternalCryptoHashAlgorithm;

@property (nonatomic,readwrite,assign,getter=externalCryptoKeyID,setter=setExternalCryptoKeyID:) NSString* externalCryptoKeyID;

- (NSString*)externalCryptoKeyID;
- (void)setExternalCryptoKeyID :(NSString*)newExternalCryptoKeyID;

@property (nonatomic,readwrite,assign,getter=externalCryptoKeySecret,setter=setExternalCryptoKeySecret:) NSString* externalCryptoKeySecret;

- (NSString*)externalCryptoKeySecret;
- (void)setExternalCryptoKeySecret :(NSString*)newExternalCryptoKeySecret;

@property (nonatomic,readwrite,assign,getter=externalCryptoMethod,setter=setExternalCryptoMethod:) int externalCryptoMethod;

- (int)externalCryptoMethod;
- (void)setExternalCryptoMethod :(int)newExternalCryptoMethod;

@property (nonatomic,readwrite,assign,getter=externalCryptoMode,setter=setExternalCryptoMode:) int externalCryptoMode;

- (int)externalCryptoMode;
- (void)setExternalCryptoMode :(int)newExternalCryptoMode;

@property (nonatomic,readwrite,assign,getter=externalCryptoPublicKeyAlgorithm,setter=setExternalCryptoPublicKeyAlgorithm:) NSString* externalCryptoPublicKeyAlgorithm;

- (NSString*)externalCryptoPublicKeyAlgorithm;
- (void)setExternalCryptoPublicKeyAlgorithm :(NSString*)newExternalCryptoPublicKeyAlgorithm;

 

Default Value

""

Remarks

Use this property to tune-up remote cryptography settings. SecureBlackbox supports two independent types of external cryptography: synchronous (based on the ExternalSign event) and asynchronous (based on the DC protocol and the DCAuth signing component).

FIPSMode Property (PDFDecryptor Module)

Reserved.

Syntax

• Swift
• Objective-C

public var fipsMode: Bool {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=FIPSMode,setter=setFIPSMode:) BOOL FIPSMode;

- (BOOL)FIPSMode;
- (void)setFIPSMode :(BOOL)newFIPSMode;

Default Value

False

Remarks

This property is reserved for future use.

InputBytes Property (PDFDecryptor Module)

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

Syntax

• Swift
• Objective-C

public var inputBytes: Data {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=inputBytes,setter=setInputBytes:) NSData* inputBytes;

- (NSData*)inputBytes;
- (void)setInputBytes :(NSData*)newInputBytes;

Remarks

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

InputFile Property (PDFDecryptor Module)

The PDF file to be decrypted.

Syntax

• Swift
• Objective-C

public var inputFile: String {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=inputFile,setter=setInputFile:) NSString* inputFile;

- (NSString*)inputFile;
- (void)setInputFile :(NSString*)newInputFile;

Default Value

""

Remarks

Provide the path to the PDF document to be decrypted.

OutputBytes Property (PDFDecryptor Module)

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

Syntax

• Swift
• Objective-C

public var outputBytes: Data {
  get {...}
}

@property (nonatomic,readonly,assign,getter=outputBytes) NSData* outputBytes;

- (NSData*)outputBytes;

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.

OutputFile Property (PDFDecryptor Module)

The file to save the decrypted document to.

Syntax

• Swift
• Objective-C

public var outputFile: String {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=outputFile,setter=setOutputFile:) NSString* outputFile;

- (NSString*)outputFile;
- (void)setOutputFile :(NSString*)newOutputFile;

Default Value

""

Remarks

Specifies the path where the decrypted PDF should be saved.

Password Property (PDFDecryptor Module)

The decryption password.

Syntax

• Swift
• Objective-C

public var password: String {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=password,setter=setPassword:) NSString* password;

- (NSString*)password;
- (void)setPassword :(NSString*)newPassword;

Default Value

""

Remarks

Use this property to provide the decryption password.

Config Method (PDFDecryptor Module)

Sets or retrieves a configuration setting.

Syntax

• Swift
• Objective-C

public func config(configurationString: String) throws -> String

- (NSString*)config:(NSString*)configurationString;

Remarks

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

These settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the class, 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.

Decrypt Method (PDFDecryptor Module)

Decrypts a PDF document.

Syntax

• Swift
• Objective-C

public func decrypt() throws -> Void

- (void)decrypt;

Remarks

Use this method to decrypt a PDF document provided via InputFile (InputStream). The decrypted document will be saved in OutputFile (OutputStream).

DoAction Method (PDFDecryptor Module)

Performs an additional action.

Syntax

• Swift
• Objective-C

public func doAction(actionID: String, actionParams: String) throws -> String

- (NSString*)doAction:(NSString*)actionID :(NSString*)actionParams;

Remarks

DoAction is a generic method available in every class. 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;....

DocumentLoaded Event (PDFDecryptor Module)

This event is fired when the document has been loaded into memory.

Syntax

• Swift
• Objective-C

func onDocumentLoaded(cancel: inout Bool)

- (void)onDocumentLoaded:(int*)cancel;

Remarks

The handler for this event is a good place to check the document structure, which may be useful when preparing the signature. For example, you can use the Pages information to find the optimal position for the signature widget.

Set Cancel to true to terminate document processing on this stage.

Encrypted Event (PDFDecryptor Module)

Notifies the application that the document is encrypted and provides recipient certificate details if asymmetric encryption was used to encrypt the document.

Syntax

• Swift
• Objective-C

func onEncrypted(certUsed: Bool, issuerRDN: String, serialNumber: Data, subjectKeyID: Data, needCredential: Bool, skipThis: inout Bool)

- (void)onEncrypted:(BOOL)certUsed :(NSString*)issuerRDN :(NSData*)serialNumber :(NSData*)subjectKeyID :(BOOL)needCredential :(int*)skipThis;

Remarks

The class fires this event when processing encrypted documents to report the fact of encryption and pass certificate parameters to the user.

This event fires repeatedly for each encryption mechanism used in the document until the user provides the correct credential via the DecryptionCertificate or Password property (depending on the encryption method used), or sets SkipThis to true.

The CertUsed parameter specifies the encryption method used. If set to true, it indicates that the document uses asymmetric (certificate-based) encryption. In that case, the IssuerRDN, SerialNumber, and SubjectKeyID parameters provide the details of the encryption certificate. Note that the document can be encrypted with more than one certificate (or have "more than one recipient"), in which case each certificate will invoke its own Encrypted event loop.

CertUsed set to false indicates that the document uses password encryption. In this case, provide the password via the Password property.

The NeedCredential parameter specifies whether the correct credential is already available to the class or still needs to be set. One example where NeedCredential would be set to false is where it had been provided by the application prior to processing the document (e.g. by setting the Password property to a known pre-defined value). If NeedCredential is set to true, you must provide the valid credential for the decryption process to succeed.

Error Event (PDFDecryptor Module)

Information about errors during signing/validation.

Syntax

• Swift
• Objective-C

func onError(errorCode: Int32, description: String)

- (void)onError:(int)errorCode :(NSString*)description;

Remarks

The event is fired in case of exceptional conditions during PDF processing.

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

ExternalDecrypt Event (PDFDecryptor Module)

Handles remote or external decryption.

Syntax

• Swift
• Objective-C

func onExternalDecrypt(operationId: String, algorithm: String, pars: String, encryptedData: String, data: inout String)

- (void)onExternalDecrypt:(NSString*)operationId :(NSString*)algorithm :(NSString*)pars :(NSString*)encryptedData :(NSString**)data;

Remarks

Assign a handler to this event if you need to delegate a low-level decryption operation to an external, remote, or custom decryption engine. The handler receives an encrypted value in the EncryptedData parameter, and is expected to decrypt it and place the decrypted value into the Data parameter.

OperationId provides a comment about the operation and its origin. It depends on the exact class being used, and may be empty. Algorithm specifies the encryption algorithm being used, and Pars contains algorithm-dependent parameters.

The class uses base16 (hex) encoding for the EncryptedData, Data, and Pars parameters. If your decryption engine uses a different input and output encoding, you may need to decode and/or encode the data before and/or after the decryption.

Sample data encoded in base16: a0dee2a0382afbb09120ffa7ccd8a152 - lower case base16 A0DEE2A0382AFBB09120FFA7CCD8A152 - upper case base16

Notification Event (PDFDecryptor Module)

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

Syntax

• Swift
• Objective-C

func onNotification(eventID: String, eventParam: String)

- (void)onNotification:(NSString*)eventID :(NSString*)eventParam;

Remarks

The class fires this event to let the application know about some event, occurrence, or milestone in the class. 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 class, the exact action it is performing, or the document being processed, one or both may be omitted.

Certificate Type

Provides details of an individual X.509 certificate.

Remarks

This type provides access to X.509 certificate details.

Fields

Constructors

public init(stream: )

Loads the X.509 certificate from a stream. Stream is a stream containing the certificate data.

public init()

Creates a new object with default field values.

ExternalCrypto Type

Specifies the parameters of external cryptographic calls.

Remarks

External cryptocalls are used in a Distributed Cryptography (DC) subsystem, which allows the delegation of security operations to the remote agent. For instance, it can be used to compute the signature value on the server, while retaining the client's private key locally.

Fields

Constructors

public init()

Creates a new ExternalCrypto object with default field values.

PDFDocumentInfo Type

Contains document security information.

Remarks

This type provides an overview of the document security parameters, including the encryption method (if used) and signature count. This information is available early into the signing/validation process and lets you prepare for the subsequent signature validation.

Fields

Constructors

public init()

Initializes an instance of PDFDocumentInfo class.

Config Settings (PDFDecryptor Module)

PDFDecryptor Config Settings

Base Config Settings

Trappable Errors (PDFDecryptor Module)

PDFDecryptor Errors