# PDFDecrypt Class

The PDFDecrypt class decrypts PDF documents.

## Syntax

```text
securepdf.PDFDecrypt
```

## Remarks

The PDFDecrypt class supports decryption of both password-encrypted and certificate-encrypted PDF documents. To determine the document's encryption type before decrypting it, subscribe to the [Password](#password-event-pdfdecrypt-class) and [RecipientInfo](#recipientinfo-event-pdfdecrypt-class) events and open the document. For example:

```csharp
pdfdecrypt.InputFile = "encrypted.pdf";

pdfdecrypt.OnPassword += (s, e) =>
{
  Console.WriteLine("The PDF document is encrypted with a password.");
};

pdfdecrypt.OnRecipientInfo += (s, e) =>
{
  Console.WriteLine("The PDF document is encrypted with a certificate.");
};

pdfdecrypt.Open();
pdfdecrypt.Close();
```

### Password-Based Decryption

 If you have determined that the PDF is encrypted with a password (or know that fact beforehand), you must provide the correct decryption password using the [Password](#password-property-pdfdecrypt-class) property (for user passwords) or the [OwnerPassword](#OwnerPassword) configuration setting (for owner passwords) to decrypt the document and gain access to its contents.

The following code shows how to decrypt a password-encrypted PDF document:

```csharp
pdfdecrypt.InputFile = "password_encrypted.pdf";
pdfdecrypt.OutputFile = "decrypted.pdf";
pdfdecrypt.Password = "password";
pdfdecrypt.Decrypt();
```

 Alternatively, set the decryption password within your [Password](#password-event-pdfdecrypt-class) event handler, and the class will decrypt the document all the same. The *Available* parameter may come in handy in determining whether the class already possesses the necessary decryption password.

### Certificate-Based Decryption

 If you have determined that the PDF is encrypted with a certificate (or know that fact beforehand), you must provide the decryption certificate containing the correct private key to decrypt the document and gain access to its contents.

The following code shows how to decrypt a certificate-encrypted PDF document:

```csharp
pdfdecrypt.InputFile = "cert_encrypted.pdf";
pdfdecrypt.OutputFile = "decrypted.pdf";
pdfdecrypt.DecryptionCert = new Certificate(CertStoreTypes.cstPFXFile, "C:/MyCerts/cert.pfx", "cert_pass", "*");
pdfdecrypt.Decrypt();
```

 Alternatively, set the decryption certificate within your [RecipientInfo](#recipientinfo-event-pdfdecrypt-class) event handler, and the class will decrypt the document all the same. Like in the [Password](#password-event-pdfdecrypt-class) event, the *Available* parameter may come in handy when determining whether the class already possesses the necessary decryption certificate. The information published by the other parameters in the event (i.e., *Issuer*, *SerialNumber*, and *SubjectKeyIdentifier*) may also be useful for determining which decryption certificate should be used.

## Property List

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

|  |  |
| --- | --- |
| [DecryptionCert](#decryptioncert-property-pdfdecrypt-class) | The decryption certificate. |
| [InputData](#inputdata-property-pdfdecrypt-class) | A byte array containing the PDF document to process. |
| [InputFile](#inputfile-property-pdfdecrypt-class) | The PDF file to process. |
| [OutputData](#outputdata-property-pdfdecrypt-class) | A byte array containing the PDF document after processing. |
| [OutputFile](#outputfile-property-pdfdecrypt-class) | The path to a local file where the output is written. |
| [Overwrite](#overwrite-property-pdfdecrypt-class) | Whether the class should overwrite files. |
| [Password](#password-property-pdfdecrypt-class) | The password to decrypt the document with. |

## Method List

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

|  |  |
| --- | --- |
| [Close](#close-method-pdfdecrypt-class) | Closes the opened document. |
| [Config](#config-method-pdfdecrypt-class) | Sets or retrieves a configuration setting. |
| [Decrypt](#decrypt-method-pdfdecrypt-class) | Decrypts the document. |
| [Encrypted](#encrypted-method-pdfdecrypt-class) | Checks whether the document is encrypted. |
| [Open](#open-method-pdfdecrypt-class) | Opens the document for processing. |
| [Reset](#reset-method-pdfdecrypt-class) | Resets the class. |
| [SetInputStream](#setinputstream-method-pdfdecrypt-class) | Sets the stream containing the PDF document to process. |
| [SetOutputStream](#setoutputstream-method-pdfdecrypt-class) | Sets the stream to write the processed document to. |

## Event List

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

|  |  |
| --- | --- |
| [Error](#error-event-pdfdecrypt-class) | Fired when information is available about errors during data delivery. |
| [Log](#log-event-pdfdecrypt-class) | Fired once for each log message. |
| [Password](#password-event-pdfdecrypt-class) | Fired when the class detects that the document is encrypted with a password. |
| [RecipientInfo](#recipientinfo-event-pdfdecrypt-class) | Fired for each recipient certificate of the encrypted document. |

## Config Settings

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

|  |  |
| --- | --- |
| [CloseInputStreamAfterProcessing](#CloseInputStreamAfterProcessing) | Whether to close the input stream after processing. |
| [CloseOutputStreamAfterProcessing](#CloseOutputStreamAfterProcessing) | Whether to close the output stream after processing. |
| [EncryptionAlgorithm](#EncryptionAlgorithm) | The encryption algorithm used to encrypt the document. |
| [LogLevel](#LogLevel) | The level of detail that is logged. |
| [OwnerPassword](#OwnerPassword) | The owner password to decrypt the document with. |
| [Permissions](#Permissions) | The document permissions associated with the encryption. |
| [SaveChanges](#SaveChanges) | Whether to save changes made to the document. |
| [TempPath](#TempPath) | The location where temporary files are stored. |
| [BuildInfo](#BuildInfo) | Information about the product's build. |
| [GUIAvailable](#GUIAvailable) | Whether or not a message loop is available for processing events. |
| [LicenseInfo](#LicenseInfo) | Information about the current license. |
| [MaskSensitiveData](#MaskSensitiveData) | Whether sensitive data is masked in log messages. |
| [UseDaemonThreads](#UseDaemonThreads) | Whether threads created by the class are daemon threads. |
| [UseInternalSecurityAPI](#UseInternalSecurityAPI) | Whether or not to use the system security libraries or an internal implementation. |
| [UseVirtualThreads](#UseVirtualThreads) | Whether threads created by the class use virtual threads instead of platform threads. |

# DecryptionCert Property ([PDFDecrypt](#pdfdecrypt-class) Class)

The decryption certificate.

## Syntax

```text
public Certificate getDecryptionCert();
public void setDecryptionCert(Certificate decryptionCert);
```

## Remarks

This property is used to provide the certificate used for decryption. Note that this certificate must have a private key associated with it.

This property is not available at design time.

 Please refer to the [Certificate](#certificate-type) type for a complete list of fields.

# InputData Property ([PDFDecrypt](#pdfdecrypt-class) Class)

A byte array containing the PDF document to process.

## Syntax

```text
public byte[] getInputData();
public void setInputData(byte[] inputData);
```

## Remarks

This property is used to assign a byte array containing the PDF document to be processed.

This property is not available at design time.

# InputFile Property ([PDFDecrypt](#pdfdecrypt-class) Class)

The PDF file to process.

## Syntax

```text
public String getInputFile();
public void setInputFile(String inputFile);
```

## Default Value

""

## Remarks

This property is used to provide a path to the PDF document to be processed.

# OutputData Property ([PDFDecrypt](#pdfdecrypt-class) Class)

A byte array containing the PDF document after processing.

## Syntax

```text
public byte[] getOutputData();
```

## Remarks

This property is used to read the byte array containing the produced output after the operation has completed. It is only set if an output file and output stream have not been assigned via [OutputFile](#outputfile-property-pdfdecrypt-class) and [SetOutputStream](#setoutputstream-method-pdfdecrypt-class) respectively.

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

# OutputFile Property ([PDFDecrypt](#pdfdecrypt-class) Class)

The path to a local file where the output is written.

## Syntax

```text
public String getOutputFile();
public void setOutputFile(String outputFile);
```

## Default Value

""

## Remarks

This property is used to provide a path where the resulting PDF document is saved after the operation has completed.

# Overwrite Property ([PDFDecrypt](#pdfdecrypt-class) Class)

Whether the class should overwrite files.

## Syntax

```text
public boolean isOverwrite();
public void setOverwrite(boolean overwrite);
```

## Default Value

False

## Remarks

This property indicates whether the class overwrites [OutputFile](#outputfile-property-pdfdecrypt-class). If set to *false*, an error is thrown whenever [OutputFile](#outputfile-property-pdfdecrypt-class) exists before an operation.

# Password Property ([PDFDecrypt](#pdfdecrypt-class) Class)

The password to decrypt the document with.

## Syntax

```text
public String getPassword();
public void setPassword(String password);
```

## Default Value

""

## Remarks

This property is used to provide the user password for decryption. Though it may be different from [OwnerPassword](#OwnerPassword), most implementations use the same value for both.

# Close Method ([PDFDecrypt](#pdfdecrypt-class) Class)

Closes the opened document.

## Syntax

```text
public void close();
```

## Remarks

This method is used to close the previously opened document. It should always be preceded by a call to [Open](#open-method-pdfdecrypt-class).

**Example:**

```csharp
component.InputFile = "input.pdf";
component.Open();
// Some operation
component.Close();
```

 If any changes are made to the document, they are saved automatically to [OutputFile](#outputfile-property-pdfdecrypt-class), [OutputData](#outputdata-property-pdfdecrypt-class), or the stream set in [SetOutputStream](#setoutputstream-method-pdfdecrypt-class) when this method is called. To configure this saving behavior, set [SaveChanges](#SaveChanges).

# Config Method ([PDFDecrypt](#pdfdecrypt-class) Class)

Sets or retrieves a configuration setting.

## Syntax

```text
public String config(String configurationString);
```

## Remarks

Config is a generic method available in every class. It is used to set and retrieve [configuration settings](#config-settings-pdfdecrypt-class) 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](#config-settings-pdfdecrypt-class), you must call *Config("PROPERTY")*. The value will be returned as a string.

# Decrypt Method ([PDFDecrypt](#pdfdecrypt-class) Class)

Decrypts the document.

## Syntax

```text
public void decrypt();
```

## Remarks

This method is used to **permanently remove encryption** from the document. The document is decrypted with either [Password](#password-property-pdfdecrypt-class) (for password-based encryption) or [DecryptionCert](#decryptioncert-property-pdfdecrypt-class) (for certificate-based encryption).

**Example:**

```csharp
pdfdecrypt.InputFile = "encrypted.pdf";
pdfdecrypt.OutputFile = "decrypted.pdf";
// Set decryption material (Password or DecryptionCert) here
pdfdecrypt.Decrypt();
```

 NOTE: Since full decryption invalidates all signatures, this method automatically removes them from the document. Existing signatures should therefore be verified before calling this method.

NOTE: If the document is not already opened, this method opens it, performs the operation, then closes it.

# Encrypted Method ([PDFDecrypt](#pdfdecrypt-class) Class)

Checks whether the document is encrypted.

## Syntax

```text
public boolean encrypted();
```

## Remarks

This method is used to determine whether the document is encrypted. It returns *false* if the document is pseudo-encrypted with an empty password.

**Example:**

```csharp
pdfdecrypt.InputFile = "input.pdf";
if (pdfdecrypt.Encrypted())
{
  pdfdecrypt.OutputFile = "decrypted.pdf";
  // Set Password or DecryptionCert
  pdfdecrypt.Decrypt();
}
```

 NOTE: If the document is not already opened, this method opens it, performs the operation, then closes it.

# Open Method ([PDFDecrypt](#pdfdecrypt-class) Class)

Opens the document for processing.

## Syntax

```text
public void open();
```

## Remarks

This method is used to open the document specified in [InputFile](#inputfile-property-pdfdecrypt-class), [InputData](#inputdata-property-pdfdecrypt-class), or [SetInputStream](#setinputstream-method-pdfdecrypt-class) before performing some operation on it, such as decryption. When finished, call [Close](#close-method-pdfdecrypt-class) to complete or discard the operation.

It is recommended to use this method (alongside [Close](#close-method-pdfdecrypt-class)) when performing multiple operations on the document at once.

### Automatic Decryption Functionality

 If this method is called on an encrypted document, the [Password](#password-event-pdfdecrypt-class) or [RecipientInfo](#recipientinfo-event-pdfdecrypt-class) event fires (depending on the encryption type) as a notification that the document must be decrypted before processing can continue.

Once the correct decryption material is supplied, the class then attempts to decrypt the document automatically within this method. When this occurs, the decrypted content is kept in memory so that the document's encrypted status is preserved when it is saved later. Use [Decrypt](#decrypt-method-pdfdecrypt-class) to save a decrypted copy of the document instead.

# Reset Method ([PDFDecrypt](#pdfdecrypt-class) Class)

Resets the class.

## Syntax

```text
public void reset();
```

## Remarks

This method is used to reset the class's properties and configuration settings to their default values.

# SetInputStream Method ([PDFDecrypt](#pdfdecrypt-class) Class)

Sets the stream containing the PDF document to process.

## Syntax

```text
public void setInputStream(java.io.InputStream inputStream);
```

## Remarks

This method is used to set the stream from which the class reads the PDF document to be processed. If an input stream is set before the class attempts to perform operations on the document, the class reads the data from the input stream instead of from the [InputFile](#inputfile-property-pdfdecrypt-class) or [InputData](#inputdata-property-pdfdecrypt-class) properties.

NOTE: It may be useful to additionally set [CloseInputStreamAfterProcessing](#CloseInputStreamAfterProcessing) to *true* when using input streams.

# SetOutputStream Method ([PDFDecrypt](#pdfdecrypt-class) Class)

Sets the stream to write the processed document to.

## Syntax

```text
public void setOutputStream(java.io.OutputStream outputStream);
```

## Remarks

This method is used to set the stream to which the class writes the resulting PDF document. If an output stream is set before the class attempts to perform operations on the document, the class writes the data to the output stream instead of writing to [OutputFile](#outputfile-property-pdfdecrypt-class) or populating [OutputData](#outputdata-property-pdfdecrypt-class).

NOTE: It may be useful to additionally set [CloseOutputStreamAfterProcessing](#CloseOutputStreamAfterProcessing) to *true* when using output streams.

# Error Event ([PDFDecrypt](#pdfdecrypt-class) Class)

Fired when information is available about errors during data delivery.

## Syntax

```text
public class DefaultPDFDecryptEventListener implements PDFDecryptEventListener {
  ...
  public void error(PDFDecryptErrorEvent e) {}
  ...
}

public class PDFDecryptErrorEvent {
  public int errorCode;
  public String description;
}
```

## Remarks

The Error event is fired in case of exceptional conditions during message processing. Normally the class throws an exception.

The *ErrorCode* parameter contains an error code, and the *Description* parameter contains a textual description of the error. For a list of valid error codes and their descriptions, please refer to the [Error Codes](#trappable-errors-pdfdecrypt-class) section.

# Log Event ([PDFDecrypt](#pdfdecrypt-class) Class)

Fired once for each log message.

## Syntax

```text
public class DefaultPDFDecryptEventListener implements PDFDecryptEventListener {
  ...
  public void log(PDFDecryptLogEvent e) {}
  ...
}

public class PDFDecryptLogEvent {
  public int logLevel;
  public String message;
  public String logType;
}
```

## Remarks

This event is fired once for each log message generated by the class. The verbosity is controlled by the [LogLevel](#LogLevel) configuration setting.

*LogLevel* indicates the detail level of the message. Possible values are:

|  |  |
| --- | --- |
| 0 (None) | No messages are logged. |
| 1 (Info - default) | Informational events such as the basics of the chain validation procedure are logged. |
| 2 (Verbose) | Detailed data such as HTTP requests are logged. |
| 3 (Debug) | Debug data including the full chain validation procedure are logged. |

*Message* is the log message.

*LogType* identifies the type of log entry. Possible values are:

- CertValidator
- Font
- HTTP
- PDFInvalidSignature
- PDFRevocationInfo
- Timestamp
- TSL

# Password Event ([PDFDecrypt](#pdfdecrypt-class) Class)

Fired when the class detects that the document is encrypted with a password.

## Syntax

```text
public class DefaultPDFDecryptEventListener implements PDFDecryptEventListener {
  ...
  public void password(PDFDecryptPasswordEvent e) {}
  ...
}

public class PDFDecryptPasswordEvent {
  public boolean available;
  public boolean cancel; //read-write
}
```

## Remarks

This event is fired during document processing to report that the document is encrypted with a password. It may be used to supply the correct decryption password to [Password](#password-property-pdfdecrypt-class).

*Available* indicates whether the decryption password is already available to the class or still needs to be set. If this parameter is *false*, the correct password must be provided for the decryption attempt to succeed.

*Cancel* determines whether the class will stop firing this event to request a password.

# RecipientInfo Event ([PDFDecrypt](#pdfdecrypt-class) Class)

Fired for each recipient certificate of the encrypted document.

## Syntax

```text
public class DefaultPDFDecryptEventListener implements PDFDecryptEventListener {
  ...
  public void recipientInfo(PDFDecryptRecipientInfoEvent e) {}
  ...
}

public class PDFDecryptRecipientInfoEvent {
  public String issuer;
  public String serialNumber;
  public String subjectKeyIdentifier;
  public boolean available;
  public boolean cancel; //read-write
}
```

## Remarks

This event is fired during document processing for each recipient certificate that the document has been encrypted for (if applicable). It may be used to identify the certificate(s) to load and supply to [DecryptionCert](#decryptioncert-property-pdfdecrypt-class).

*Issuer* specifies the subject of the issuer certificate.

*SerialNumber* specifies the serial number of the encryption certificate.

*SubjectKeyIdentifier* specifies the X.509 subjectKeyIdentifier extension value of the encryption certificate, encoded as a hex string.

*Available* indicates whether the decryption certificate is already available to the class or still needs to be set. If this parameter is *false*, the correct certificate must be provided for the decryption attempt to succeed.

*Cancel* determines whether the class will stop firing this event to request a certificate.

NOTE: The document may be encrypted with more than one certificate (or have "more than one recipient"), in which case each certificate causes its own invocation of this event.

# Certificate Type

This is the digital certificate being used.

## Remarks

This type describes the current digital certificate. The certificate may be a public or private key. The fields are used to identify or select certificates.

The following fields are available:

- [EffectiveDate](#Certificate_f_EffectiveDate)

- [ExpirationDate](#Certificate_f_ExpirationDate)

- [ExtendedKeyUsage](#Certificate_f_ExtendedKeyUsage)

- [Fingerprint](#Certificate_f_Fingerprint)

- [FingerprintSHA1](#Certificate_f_FingerprintSHA1)

- [FingerprintSHA256](#Certificate_f_FingerprintSHA256)

- [Issuer](#Certificate_f_Issuer)

- [KeyPassword](#Certificate_f_KeyPassword)

- [PrivateKey](#Certificate_f_PrivateKey)

- [PrivateKeyAvailable](#Certificate_f_PrivateKeyAvailable)

- [PrivateKeyContainer](#Certificate_f_PrivateKeyContainer)

- [PublicKey](#Certificate_f_PublicKey)

- [PublicKeyAlgorithm](#Certificate_f_PublicKeyAlgorithm)

- [PublicKeyLength](#Certificate_f_PublicKeyLength)

- [SerialNumber](#Certificate_f_SerialNumber)

- [SignatureAlgorithm](#Certificate_f_SignatureAlgorithm)

- [Store](#Certificate_f_Store)

- [StorePassword](#Certificate_f_StorePassword)

- [StoreType](#Certificate_f_StoreType)

- [SubjectAltNames](#Certificate_f_SubjectAltNames)

- [ThumbprintMD5](#Certificate_f_ThumbprintMD5)

- [ThumbprintSHA1](#Certificate_f_ThumbprintSHA1)

- [ThumbprintSHA256](#Certificate_f_ThumbprintSHA256)

- [Usage](#Certificate_f_Usage)

- [UsageFlags](#Certificate_f_UsageFlags)

- [Version](#Certificate_f_Version)

- [Subject](#Certificate_f_Subject)

- [Encoded](#Certificate_f_Encoded)

## Fields

 **EffectiveDate** *String (read-only)*
*Default Value: ""*

The date on which this certificate becomes valid. Before this date, it is not valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2000 15:00:00.

 **ExpirationDate** *String (read-only)*
*Default Value: ""*

The date on which the certificate expires. After this date, the certificate will no longer be valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2001 15:00:00.

 **ExtendedKeyUsage** *String (read-only)*
*Default Value: ""*

A comma-delimited list of extended key usage identifiers. These are the same as ASN.1 object identifiers (OIDs).

 **Fingerprint** *String (read-only)*
*Default Value: ""*

The hex-encoded, 16-byte MD5 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: *bc:2a:72:af:fe:58:17:43:7a:5f:ba:5a:7c:90:f7:02*

 **FingerprintSHA1** *String (read-only)*
*Default Value: ""*

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: *30:7b:fa:38:65:83:ff:da:b4:4e:07:3f:17:b8:a4:ed:80:be:ff:84*

 **FingerprintSHA256** *String (read-only)*
*Default Value: ""*

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: *6a:80:5c:33:a9:43:ea:b0:96:12:8a:64:96:30:ef:4a:8a:96:86:ce:f4:c7:be:10:24:8e:2b:60:9e:f3:59:53*

 **Issuer** *String (read-only)*
*Default Value: ""*

The issuer of the certificate. This field contains a string representation of the name of the issuing authority for the certificate.

 **KeyPassword** *String*
*Default Value: ""*

The password for the certificate's private key (if any).

Some certificate stores may individually protect certificates' private keys, separate from the standard protection offered by the [StorePassword](#Certificate_f_StorePassword). This field can be used to read such password-protected private keys.

NOTE: This property defaults to the value of [StorePassword](#Certificate_f_StorePassword). To clear it, you must set the property to the empty string (""). It can be set at any time, but when the private key's password is different from the store's password, then it must be set before calling [PrivateKey](#Certificate_f_PrivateKey).

 **PrivateKey** *String (read-only)*
*Default Value: ""*

The private key of the certificate (if available). The key is provided as PEM/Base64-encoded data.

NOTE: The [PrivateKey](#Certificate_f_PrivateKey) may be available but not exportable. In this case, [PrivateKey](#Certificate_f_PrivateKey) returns an empty string.

 **PrivateKeyAvailable** *boolean (read-only)*
*Default Value: False*

Whether a [PrivateKey](#Certificate_f_PrivateKey) is available for the selected certificate. If [PrivateKeyAvailable](#Certificate_f_PrivateKeyAvailable) is True, the certificate may be used for authentication purposes (e.g., server authentication).

 **PrivateKeyContainer** *String (read-only)*
*Default Value: ""*

The name of the [PrivateKey](#Certificate_f_PrivateKey) container for the certificate (if available). This functionality is available only on Windows platforms.

 **PublicKey** *String (read-only)*
*Default Value: ""*

The public key of the certificate. The key is provided as PEM/Base64-encoded data.

 **PublicKeyAlgorithm** *String (read-only)*
*Default Value: ""*

The textual description of the certificate's public key algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_DH") or an object identifier (OID) string representing the algorithm.

 **PublicKeyLength** *int (read-only)*
*Default Value: 0*

The length of the certificate's public key (in bits). Common values are 512, 1024, and 2048.

 **SerialNumber** *String (read-only)*
*Default Value: ""*

The serial number of the certificate encoded as a string. The number is encoded as a series of hexadecimal digits, with each pair representing a byte of the serial number.

 **SignatureAlgorithm** *String (read-only)*
*Default Value: ""*

The text description of the certificate's signature algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_MD5RSA") or an object identifier (OID) string representing the algorithm.

 **Store** *String*
*Default Value: "MY"*

The name of the certificate store for the client certificate.

The [StoreType](#Certificate_f_StoreType) field denotes the type of the certificate store specified by [Store](#Certificate_f_Store). If the store is password-protected, specify the password in [StorePassword](#Certificate_f_StorePassword).

[Store](#Certificate_f_Store) is used in conjunction with the [Subject](#Certificate_f_Subject) field to specify client certificates. If [Store](#Certificate_f_Store) has a value, and [Subject](#Certificate_f_Subject) or [Encoded](#Certificate_f_Encoded) is set, a search for a certificate is initiated. Please see the [Subject](#Certificate_f_Subject) field for details.

 Designations of certificate stores are platform dependent.

The following designations are the most common User and Machine certificate stores in Windows:

|  |  |
| --- | --- |
| MY | A certificate store holding personal certificates with their associated private keys. |
| CA | Certifying authority certificates. |
| ROOT | Root certificates. |

In Java, the certificate store normally is a file containing certificates and optional private keys.

When the certificate store type is *cstPFXFile*, this property must be set to the name of the file. When the type is *cstPFXBlob*, the property must be set to the binary contents of a PFX file (i.e., PKCS#12 certificate store).

 **StoreB** *byte[]*
*Default Value: "MY"*

The name of the certificate store for the client certificate.

The [StoreType](#Certificate_f_StoreType) field denotes the type of the certificate store specified by [Store](#Certificate_f_Store). If the store is password-protected, specify the password in [StorePassword](#Certificate_f_StorePassword).

[Store](#Certificate_f_Store) is used in conjunction with the [Subject](#Certificate_f_Subject) field to specify client certificates. If [Store](#Certificate_f_Store) has a value, and [Subject](#Certificate_f_Subject) or [Encoded](#Certificate_f_Encoded) is set, a search for a certificate is initiated. Please see the [Subject](#Certificate_f_Subject) field for details.

 Designations of certificate stores are platform dependent.

The following designations are the most common User and Machine certificate stores in Windows:

|  |  |
| --- | --- |
| MY | A certificate store holding personal certificates with their associated private keys. |
| CA | Certifying authority certificates. |
| ROOT | Root certificates. |

In Java, the certificate store normally is a file containing certificates and optional private keys.

When the certificate store type is *cstPFXFile*, this property must be set to the name of the file. When the type is *cstPFXBlob*, the property must be set to the binary contents of a PFX file (i.e., PKCS#12 certificate store).

 **StorePassword** *String*
*Default Value: ""*

If the type of certificate store requires a password, this field is used to specify the password needed to open the certificate store.

 **StoreType** *int*
*Default Value: 0*

The type of certificate store for this certificate.

 The class supports both public and private keys in a variety of formats. When the *cstAuto* value is used, the class will automatically determine the type. This field can take one of the following values:

```csharp
sftp.SSHCert = new Certificate(CertStoreTypes.cstPKCS11,
                               @"C:\Program Files\OpenSC Project\OpenSC\pkcs11\opensc-pkcs11.dll",
                               "123456", // PIN
                               "CN=cert_subject");
sftp.SSHUser = "test";
sftp.SSHLogon("myhost", 22);
```

```csharp
certmgr.CertStoreType = CertStoreTypes.cstPKCS11;
certmgr.OnCertList += (s, e) => {
  secKeyBlob = e.CertEncoded;
};
certmgr.CertStore = @"C:\Program Files\OpenSC Project\OpenSC\pkcs11\opensc-pkcs11.dll";
certmgr.CertStorePassword = "123456"; // PIN
certmgr.ListStoreCertificates();

sftp.SSHCert = new Certificate(CertStoreTypes.cstPKCS11, secKeyBlob, "123456", "*");
sftp.SSHUser = "test";
sftp.SSHLogon("myhost", 22);
```

|  |  |
| --- | --- |
| 0 (cstUser - default) | For Windows, this specifies that the certificate store is a certificate store owned by the current user. NOTE: This store type is not available in Java. |
| 1 (cstMachine) | For Windows, this specifies that the certificate store is a machine store. NOTE: This store type is not available in Java. |
| 2 (cstPFXFile) | The certificate store is the name of a PFX (PKCS#12) file containing certificates. |
| 3 (cstPFXBlob) | The certificate store is a string (binary or Base64-encoded) representing a certificate store in PFX (PKCS#12) format. |
| 4 (cstJKSFile) | The certificate store is the name of a Java Key Store (JKS) file containing certificates. NOTE: This store type is only available in Java. |
| 5 (cstJKSBlob) | The certificate store is a string (binary or Base64-encoded) representing a certificate store in Java Key Store (JKS) format. NOTE: This store type is only available in Java. |
| 6 (cstPEMKeyFile) | The certificate store is the name of a PEM-encoded file that contains a private key and an optional certificate. |
| 7 (cstPEMKeyBlob) | The certificate store is a string (binary or Base64-encoded) that contains a private key and an optional certificate. |
| 8 (cstPublicKeyFile) | The certificate store is the name of a file that contains a PEM- or DER-encoded public key certificate. |
| 9 (cstPublicKeyBlob) | The certificate store is a string (binary or Base64-encoded) that contains a PEM- or DER-encoded public key certificate. |
| 10 (cstSSHPublicKeyBlob) | The certificate store is a string (binary or Base64-encoded) that contains an SSH-style public key. |
| 11 (cstP7BFile) | The certificate store is the name of a PKCS#7 file containing certificates. |
| 12 (cstP7BBlob) | The certificate store is a string (binary) representing a certificate store in PKCS#7 format. |
| 13 (cstSSHPublicKeyFile) | The certificate store is the name of a file that contains an SSH-style public key. |
| 14 (cstPPKFile) | The certificate store is the name of a file that contains a PPK (PuTTY Private Key). |
| 15 (cstPPKBlob) | The certificate store is a string (binary) that contains a PPK (PuTTY Private Key). |
| 16 (cstXMLFile) | The certificate store is the name of a file that contains a certificate in XML format. |
| 17 (cstXMLBlob) | The certificate store is a string that contains a certificate in XML format. |
| 18 (cstJWKFile) | The certificate store is the name of a file that contains a JWK (JSON Web Key). |
| 19 (cstJWKBlob) | The certificate store is a string that contains a JWK (JSON Web Key). |
| 21 (cstBCFKSFile) | The certificate store is the name of a file that contains a BCFKS (Bouncy Castle FIPS Key Store). NOTE: This store type is only available in Java and .NET. |
| 22 (cstBCFKSBlob) | The certificate store is a string (binary or Base64-encoded) representing a certificate store in BCFKS (Bouncy Castle FIPS Key Store) format. NOTE: This store type is only available in Java and .NET. |
| 23 (cstPKCS11) | The certificate is present on a physical security key accessible via a PKCS#11 interface. To use a security key, create a new [Certificate](#certificate-type) object and pass cstPKCS11 as the [StoreType](#Certificate_f_StoreType), the full path of the PKCS#11 DLL as the [Store](#Certificate_f_Store), and the PIN as the [StorePassword](#Certificate_f_StorePassword). Code Example. SSH Authentication with Security Key (without CertMgr): Alternatively, collect the necessary data using the [CertMgr](CertMgr.md#CertMgr) class by calling the [ListStoreCertificates](CertMgr.md#CertMgr_m_ListStoreCertificates) method after setting the corresponding properties accordingly. The certificate information returned in the [CertList](CertMgr.md#CertMgr_e_CertList) event's CertEncoded parameter may be saved for later use. When using a certificate obtained with this approach, pass the previously saved security key information as the [Store](#Certificate_f_Store) and set [StorePassword](#Certificate_f_StorePassword) to the PIN. Code Example. SSH Authentication with Security Key (with CertMgr): |
| 99 (cstAuto) | The store type is automatically detected from the input data. This setting may be used with both public and private keys and can detect any of the supported formats automatically. |

 **SubjectAltNames** *String (read-only)*
*Default Value: ""*

Comma-separated lists of alternative subject names for the certificate.

 **ThumbprintMD5** *String (read-only)*
*Default Value: ""*

The MD5 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

 **ThumbprintSHA1** *String (read-only)*
*Default Value: ""*

The SHA-1 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

 **ThumbprintSHA256** *String (read-only)*
*Default Value: ""*

The SHA-256 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

 **Usage** *String (read-only)*
*Default Value: ""*

The text description of [UsageFlags](#Certificate_f_UsageFlags).

This value will be one or more of the following strings and will be separated by commas:

- Digital Signature
- Non-Repudiation
- Key Encipherment
- Data Encipherment
- Key Agreement
- Certificate Signing
- CRL Signing
- Encipher Only

If the provider is OpenSSL, the value is a comma-separated list of X.509 certificate extension names.

 **UsageFlags** *int (read-only)*
*Default Value: 0*

The flags that show intended use for the certificate. The value of [UsageFlags](#Certificate_f_UsageFlags) is a combination of the following flags:

|  |  |
| --- | --- |
| 0x80 | Digital Signature |
| 0x40 | Non-Repudiation |
| 0x20 | Key Encipherment |
| 0x10 | Data Encipherment |
| 0x08 | Key Agreement |
| 0x04 | Certificate Signing |
| 0x02 | CRL Signing |
| 0x01 | Encipher Only |

Please see the [Usage](#Certificate_f_Usage) field for a text representation of [UsageFlags](#Certificate_f_UsageFlags).

This functionality currently is not available when the provider is OpenSSL.

 **Version** *String (read-only)*
*Default Value: ""*

The certificate's version number. The possible values are the strings "V1", "V2", and "V3".

 **Subject** *String*
*Default Value: ""*

The subject of the certificate used for client authentication.

This field will be populated with the full subject of the loaded certificate. When loading a certificate, the subject is used to locate the certificate in the store.

If an exact match is not found, the store is searched for subjects containing the value of the property.

If a match is still not found, the property is set to an empty string, and no certificate is selected.

The special value "*" picks a random certificate in the certificate store.

The certificate subject is a comma-separated list of distinguished name fields and values. For instance, "CN=www.server.com, OU=test, C=US, E=example@email.com". Common fields and their meanings are as follows:

| Field | Meaning |
| --- | --- |
| CN | Common Name. This is commonly a hostname like www.server.com. |
| O | Organization |
| OU | Organizational Unit |
| L | Locality |
| S | State |
| C | Country |
| E | Email Address |

If a field value contains a comma, it must be quoted.

 **Encoded** *String*
*Default Value: ""*

The certificate (PEM/Base64 encoded). This field is used to assign a specific certificate. The [Store](#Certificate_f_Store) and [Subject](#Certificate_f_Subject) fields also may be used to specify a certificate.

When [Encoded](#Certificate_f_Encoded) is set, a search is initiated in the current [Store](#Certificate_f_Store) for the private key of the certificate. If the key is found, [Subject](#Certificate_f_Subject) is updated to reflect the full subject of the selected certificate; otherwise, [Subject](#Certificate_f_Subject) is set to an empty string.

 **EncodedB** *byte[]*
*Default Value: ""*

The certificate (PEM/Base64 encoded). This field is used to assign a specific certificate. The [Store](#Certificate_f_Store) and [Subject](#Certificate_f_Subject) fields also may be used to specify a certificate.

When [Encoded](#Certificate_f_Encoded) is set, a search is initiated in the current [Store](#Certificate_f_Store) for the private key of the certificate. If the key is found, [Subject](#Certificate_f_Subject) is updated to reflect the full subject of the selected certificate; otherwise, [Subject](#Certificate_f_Subject) is set to an empty string.

## Constructors

```text
public Certificate();
```

 Creates a instance whose properties can be set.

```text
public Certificate(String certificateFile);
```

 Opens * CertificateFile * and reads out the contents as an X.509 public key.

```text
public Certificate(byte[] encoded);
```

 Parses * Encoded * as an X.509 public key.

```text
public Certificate(int storeType, String store, String storePassword, String subject);
```

 * StoreType * identifies the type of certificate store to use. See for descriptions of the different certificate stores. * Store * is a file containing the certificate store. * StorePassword * is the password used to protect the store.

 After the store has been successfully opened, the class will attempt to find the certificate identified by * Subject * . This can be either a complete or a substring match of the X.509 certificate's subject Distinguished Name (DN). The * Subject * parameter can also take an MD5, SHA-1, or SHA-256 thumbprint of the certificate to load in a "Thumbprint=value" format.

```text
public Certificate(int storeType, String store, String storePassword, String subject, String configurationString);
```

 * StoreType * identifies the type of certificate store to use. See for descriptions of the different certificate stores. * Store * is a file containing the certificate store. * StorePassword * is the password used to protect the store.

 * ConfigurationString * is a newline-separated list of name-value pairs that may be used to modify the default behavior. Possible values include "PersistPFXKey", which shows whether or not the PFX key is persisted after performing operations with the private key. This correlates to the PKCS12_NO_PERSIST_KEY CryptoAPI option. The default value is True (the key is persisted). "Thumbprint" - an MD5, SHA-1, or SHA-256 thumbprint of the certificate to load. When specified, this value is used to select the certificate in the store. This is applicable to the * cstUser * , * cstMachine * , * cstPublicKeyFile * , and * cstPFXFile * store types. "UseInternalSecurityAPI" shows whether the platform (default) or the internal security API is used when performing certificate-related operations.

 After the store has been successfully opened, the class will attempt to find the certificate identified by * Subject * . This can be either a complete or a substring match of the X.509 certificate's subject Distinguished Name (DN). The * Subject * parameter can also take an MD5, SHA-1, or SHA-256 thumbprint of the certificate to load in a "Thumbprint=value" format.

```text
public Certificate(int storeType, String store, String storePassword, byte[] encoded);
```

 * StoreType * identifies the type of certificate store to use. See for descriptions of the different certificate stores. * Store * is a file containing the certificate store. * StorePassword * is the password used to protect the store.

 After the store has been successfully opened, the class will load * Encoded * as an X.509 certificate and search the opened store for a corresponding private key.

```text
public Certificate(int storeType, byte[] store, String storePassword, String subject);
```

 * StoreType * identifies the type of certificate store to use. See for descriptions of the different certificate stores. * Store * is a byte array containing the certificate data. * StorePassword * is the password used to protect the store.

 After the store has been successfully opened, the class will attempt to find the certificate identified by * Subject * . This can be either a complete or a substring match of the X.509 certificate's subject Distinguished Name (DN). The * Subject * parameter can also take an MD5, SHA-1, or SHA-256 thumbprint of the certificate to load in a "Thumbprint=value" format.

```text
public Certificate(int storeType, byte[] store, String storePassword, String subject, String configurationString);
```

 * StoreType * identifies the type of certificate store to use. See for descriptions of the different certificate stores. * Store * is a byte array containing the certificate data. * StorePassword * is the password used to protect the store.

 After the store has been successfully opened, the class will attempt to find the certificate identified by * Subject * . This can be either a complete or a substring match of the X.509 certificate's subject Distinguished Name (DN). The * Subject * parameter can also take an MD5, SHA-1, or SHA-256 thumbprint of the certificate to load in a "Thumbprint=value" format.

```text
public Certificate(int storeType, byte[] store, String storePassword, byte[] encoded);
```

 * StoreType * identifies the type of certificate store to use. See for descriptions of the different certificate stores. * Store * is a byte array containing the certificate data. * StorePassword * is the password used to protect the store.

 After the store has been successfully opened, the class will load * Encoded * as an X.509 certificate and search the opened store for a corresponding private key.

# Config Settings ([PDFDecrypt](#pdfdecrypt-class) Class)

 The class 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 class, access to these *internal properties* is provided through the [Config](#config-method-pdfdecrypt-class) method.

### PDFDecrypt Config Settings

**CloseInputStreamAfterProcessing**: Whether to close the input stream after processing.This setting determines whether the input stream specified in [SetInputStream](#setinputstream-method-pdfdecrypt-class) will be closed after processing is complete. The default value is *true*.

**CloseOutputStreamAfterProcessing**: Whether to close the output stream after processing.This setting determines whether the output stream specified in [SetOutputStream](#setoutputstream-method-pdfdecrypt-class) will be closed after processing is complete. The default value is *true*.

**EncryptionAlgorithm**: The encryption algorithm used to encrypt the document.This setting returns the encryption algorithm that was used to encrypt the document. This setting is read-only.

**LogLevel**: The level of detail that is logged.This setting controls the level of detail that is logged through the [Log](#log-event-pdfdecrypt-class) event. Possible values are:

|  |  |
| --- | --- |
| 0 (None) | No messages are logged. |
| 1 (Info - default) | Informational events such as the basics of the chain validation procedure are logged. |
| 2 (Verbose) | Detailed data such as HTTP requests are logged. |
| 3 (Debug) | Debug data including the full chain validation procedure are logged. |

**OwnerPassword**: The owner password to decrypt the document with.This setting is used to provide the document owner password for decryption. Though it may be different from [Password](#password-property-pdfdecrypt-class), most implementations use the same value for both.

**Permissions**: The document permissions associated with the encryption.This setting returns the permissions protected by this encryption. The PDF specification expects applications to comply with these permissions when handling encrypted documents, but note that it is a policy-like requirement rather than an enforcement.

This setting is read-only. Its value is a bitmask of the following flags:

|  |  |
| --- | --- |
| 0x001 (pepAnnotations) | Annotating is allowed. |
| 0x002 (pepAssemble) | Assembling a new document on the basis of the processed one is allowed. |
| 0x004 (pepExtract) | Extraction/copying of the pictures and text from the document is allowed. |
| 0x008 (pepExtractAcc) | Content extraction is allowed for accessibility purposes only. |
| 0x010 (pepFillInForms) | Filling in forms is allowed. |
| 0x020 (pepHighQualityPrint) | High quality printing is allowed. |
| 0x040 (pepLowQualityPrint) | Low quality printing is allowed. |
| 0x080 (pepModify) | Modifications are allowed. |

**SaveChanges**: Whether to save changes made to the document.This setting specifies whether and how changes made to the PDF document are saved when [Close](#close-method-pdfdecrypt-class) is called. Possible values are:

|  |  |
| --- | --- |
| 0 | Discard all changes. |
| 1 | Save the document to [OutputFile](#outputfile-property-pdfdecrypt-class), [OutputData](#outputdata-property-pdfdecrypt-class), or the stream set in [SetOutputStream](#setoutputstream-method-pdfdecrypt-class), even if it has not been modified. |
| 2 (default) | Save the document to [OutputFile](#outputfile-property-pdfdecrypt-class), [OutputData](#outputdata-property-pdfdecrypt-class), or the stream set in [SetOutputStream](#setoutputstream-method-pdfdecrypt-class), but only if it has been modified. |

**TempPath**: The location where temporary files are stored.This setting specifies an absolute path to the location on disk where temporary files are stored. It can be useful to reduce memory usage.

### Base Config Settings

**BuildInfo**: Information about the product's build.When queried, this setting will return a string containing information about the product's build.

**GUIAvailable**: Whether or not a message loop is available for processing events.In a GUI-based application, long-running blocking operations may cause the application to stop responding to input until the operation returns. The class will attempt to discover whether or not the application has a message loop and, if one is discovered, it will process events in that message loop during any such blocking operation.

In some non-GUI applications, an invalid message loop may be discovered that will result in errant behavior. In these cases, setting [GUIAvailable](#GUIAvailable) to *false* will ensure that the class does not attempt to process external events.

**LicenseInfo**: Information about the current license.When queried, this setting will return a string containing information about the license this instance of a class is using. It will return the following information:

- Product: The product the license is for.
- Product Key: The key the license was generated from.
- License Source: Where the license was found (e.g., RuntimeLicense, License File).
- License Type: The type of license installed (e.g., Royalty Free, Single Server).
- Last Valid Build: The last valid build number for which the license will work.

**MaskSensitiveData**: Whether sensitive data is masked in log messages.In certain circumstances it may be beneficial to mask sensitive data, like passwords, in log messages. Set this to *true* to mask sensitive data. The default is *true*.

**UseDaemonThreads**: Whether threads created by the class are daemon threads.If set to True (default), when the class creates a thread, the thread's Daemon property will be explicitly set to True. When set to False, the class will not set the Daemon property on the created thread. The default value is True.

**UseInternalSecurityAPI**: Whether or not to use the system security libraries or an internal implementation. When set to *false*, the class will use the system security libraries by default to perform cryptographic functions where applicable.

Setting this configuration setting to *true* tells the class to use the internal implementation instead of using the system security libraries.

 This setting is set to *false* by default on all platforms.

**UseVirtualThreads**: Whether threads created by the class use virtual threads instead of platform threads.If set to *true*, when the class creates a thread, it will be created as a virtual thread instead of a platform thread. Virtual threads are lightweight threads managed by the JVM that are multiplexed onto a small pool of carrier threads, significantly reducing memory usage and platform thread count under high-concurrency workloads. Requires Java 24 or later. The default value is *false*.

# Trappable Errors ([PDFDecrypt](#pdfdecrypt-class) Class)

### PDFDecrypt Errors

|  |  |
| --- | --- |
| 860 | The document is not encrypted. |

### PDF Errors

|  |  |
| --- | --- |
| 804 | PDF decompression failed. |
| 805 | Cannot add entry to cross-reference table. |
| 806 | Unsupported field size. |
| 807 | Unsupported Encoding filter. |
| 808 | Unsupported predictor algorithm. |
| 809 | Unsupported document version. |
| 812 | Cannot read PDF file stream. |
| 813 | Cannot write to PDF file stream. |
| 814 | [OutputFile](#outputfile-property-pdfdecrypt-class) already exists and [Overwrite](#overwrite-property-pdfdecrypt-class) is false. |
| 815 | Invalid parameter. |
| 817 | Bad cross-reference entry. |
| 818 | Invalid object or generation number. |
| 819 | Invalid object stream. |
| 820 | Invalid stream dictionary. |
| 821 | Invalid AcroForm entry. |
| 822 | Invalid Root entry. |
| 823 | Invalid annotation. |
| 824 | The input document is empty. |
| 826 | OpenType font error. The error description contains the detailed message. |
| 828 | Invalid CMS data. The error description contains the detailed message. |
| 835 | Cannot change decryption mode for opened document. |
| 836 | Unsupported Date string. |
| 838 | Cryptographic error. The error description contains the detailed message. |
| 840 | [DecryptionCert](#decryptioncert-property-pdfdecrypt-class) error. The error description contains the detailed message. |
| 841 | Encryption failed. The error description contains the detailed message. |
| 842 | No proper certificate for encryption found. |
| 846 | Unsupported revision. |
| 847 | Unsupported security handler SubFilter. |
| 848 | Failed to verify permissions. |
| 849 | Invalid password. |
| 850 | Invalid password information. |
| 852 | Unsupported encryption algorithm. |
| 859 | Cannot encrypt encrypted document. |
| 864 | Cannot modify document after signature update. |
| 868 | Cannot encrypt or decrypt object. |
| 869 | Invalid security handler information. |
| 870 | Invalid encrypted data. |
| 871 | Invalid block cipher padding. |
| 872 | Failed to reload signature. |
| 873 | Object is not encrypted. |
| 874 | Unexpected cipher information. |
| 877 | Invalid document. Bad document catalog. |
| 878 | Invalid document Id. |
| 880 | Invalid document. Invalid requirements dictionary. |
| 881 | Invalid linearization dictionary. |
| 882 | Invalid signature information. |
| 883 | Unsupported document format. |
| 890 | Unsupported feature. |
| 891 | Internal error. The error description contains the detailed message. |
| 892 | Unsupported color. |
| 893 | This operation is not supported for this PDF/A level. |
| 894 | Interactive features ([Action](#PDFField_f_Action)) are not supported by PDF/A. Set [EnforcePDFA](#EnforcePDFA) to false or clear the [Action](#PDFField_f_Action) property of the field. |
| 895 | Font file not found. |

### Parsing Errors

|  |  |
| --- | --- |
| 1001 | Bad object. |
| 1002 | Bad document trailer. |
| 1003 | Illegal stream dictionary. |
| 1004 | Illegal string. |
| 1005 | Indirect object expected. |
| 1007 | Invalid reference. |
| 1008 | Invalid reference table. |
| 1009 | Invalid stream data. |
| 1010 | Unexpected character. |
| 1011 | Unexpected EOF. |
| 1012 | Unexpected indirect object in cross-reference table. |
| 1013 | RDF object not found. |
| 1014 | Invalid RDF object. |
| 1015 | Cannot create element with unknown prefix. |
| 1021 | Invalid type in Root object list. |