Class PdfSignatureAppearance

java.lang.Object
com.gitlab.pdftk_java.com.lowagie.text.pdf.PdfSignatureAppearance
public class PdfSignatureAppearance extends Object
This class takes care of the cryptographic options and appearances that form a signature.

  • Field Details

    • SELF_SIGNED

      public static final PdfName SELF_SIGNED
      The self signed filter.

    • VERISIGN_SIGNED

      public static final PdfName VERISIGN_SIGNED
      The VeriSign filter.

    • WINCER_SIGNED

      public static final PdfName WINCER_SIGNED
      The Windows Certificate Security.

    • topSection

      private static final float topSection
      See Also:

    • margin

      private static final float margin
      See Also:

    • rect

      private Rectangle rect

    • pageRect

      private Rectangle pageRect

    • app

      private PdfTemplate[] app

    • frm

      private PdfTemplate frm

    • writer

      private PdfStamperImp writer

    • layer2Text

      private String layer2Text

    • reason

      private String reason

    • location

      private String location

    • signDate

      private Calendar signDate

    • provider

      private String provider

    • page

      private int page

    • fieldName

      private String fieldName

    • privKey

      private PrivateKey privKey

    • certChain

      private Certificate[] certChain

    • crlList

      private CRL[] crlList

    • filter

      private PdfName filter

    • newField

      private boolean newField

    • sigout

      private ByteBuffer sigout

    • originalout

      private OutputStream originalout

    • tempFile

      private File tempFile

    • cryptoDictionary

      private PdfDictionary cryptoDictionary

    • stamper

      private PdfStamper stamper

    • preClosed

      private boolean preClosed

    • sigStandard

      private PdfSigGenericPKCS sigStandard

    • range

      private int[] range

    • raf

      private RandomAccessFile raf

    • bout

      private byte[] bout

    • boutLen

      private int boutLen

    • externalDigest

      private byte[] externalDigest

    • externalRSAdata

      private byte[] externalRSAdata

    • digestEncryptionAlgorithm

      private String digestEncryptionAlgorithm

    • exclusionLocations

      private HashMap exclusionLocations

    • questionMark

      public static final String questionMark
      Commands to draw a yellow question mark in a stream content
      See Also:

    • contact

      private String contact
      Holds value of property contact.

    • layer2Font

      private Font layer2Font
      Holds value of property layer2Font.

    • layer4Text

      private String layer4Text
      Holds value of property layer4Text.

    • acro6Layers

      private boolean acro6Layers
      Holds value of property acro6Layers.

    • runDirection

      private int runDirection
      Holds value of property runDirection.

    • signatureEvent

      private PdfSignatureAppearance.SignatureEvent signatureEvent
      Holds value of property signatureEvent.

    • imageScale

      private float imageScale
      Holds value of property imageScale.

  • Constructor Details

    • PdfSignatureAppearance

      PdfSignatureAppearance(PdfStamperImp writer)

  • Method Details

    • setLayer2Text

      public void setLayer2Text(String text)
      Sets the signature text identifying the signer.
      Parameters:
      text - the signature text identifying the signer. If null or not set a standard description will be used

    • getLayer2Text

      public String getLayer2Text()
      Gets the signature text identifying the signer if set by setLayer2Text().
      Returns:
      the signature text identifying the signer

    • setLayer4Text

      public void setLayer4Text(String text)
      Sets the text identifying the signature status.
      Parameters:
      text - the text identifying the signature status. If null or not set the description "Signature Not Verified" will be used

    • getLayer4Text

      public String getLayer4Text()
      Gets the text identifying the signature status if set by setLayer4Text().
      Returns:
      the text identifying the signature status

    • getRect

      public Rectangle getRect()
      Gets the rectangle representing the signature dimensions.
      Returns:
      the rectangle representing the signature dimensions. It may be null or have zero width or height for invisible signatures

    • isInvisible

      public boolean isInvisible()
      Gets the visibility status of the signature.
      Returns:
      the visibility status of the signature

    • setCrypto

      public void setCrypto(PrivateKey privKey, Certificate[] certChain, CRL[] crlList, PdfName filter)
      Sets the cryptographic parameters.
      Parameters:
      privKey - the private key
      certChain - the certificate chain
      crlList - the certificate revocation list. It may be null
      filter - the crytographic filter type. It can be SELF_SIGNED, VERISIGN_SIGNED or WINCER_SIGNED

    • setVisibleSignature

      public void setVisibleSignature(Rectangle pageRect, int page, String fieldName)
      Sets the signature to be visible. It creates a new visible signature field.
      Parameters:
      pageRect - the position and dimension of the field in the page
      page - the page to place the field. The fist page is 1
      fieldName - the field name or null to generate automatically a new field name

    • setVisibleSignature

      public void setVisibleSignature(String fieldName)
      Sets the signature to be visible. An empty signature field with the same name must already exist.
      Parameters:
      fieldName - the existing empty signature field name

    • getLayer

      public PdfTemplate getLayer(int layer)
      Gets a template layer to create a signature appearance. The layers can go from 0 to 4.

      Consult PPKAppearances.pdf for further details.

      Parameters:
      layer - the layer
      Returns:
      a template

    • getTopLayer

      public PdfTemplate getTopLayer()
      Gets the template that aggregates all appearance layers. This corresponds to the /FRM resource.

      Consult PPKAppearances.pdf for further details.

      Returns:
      the template that aggregates all appearance layers

    • getAppearance

      public PdfTemplate getAppearance() throws DocumentException, IOException
      Gets the main appearance layer.

      Consult PPKAppearances.pdf for further details.

      Returns:
      the main appearance layer
      Throws:
      DocumentException - on error
      IOException - on error

    • fitText

      public static float fitText(Font font, String text, Rectangle rect, float maxFontSize, int runDirection)
      Fits the text to some rectangle adjusting the font size as needed.
      Parameters:
      font - the font to use
      text - the text
      rect - the rectangle where the text must fit
      maxFontSize - the maximum font size
      runDirection - the run direction
      Returns:
      the calculated font size that makes the text fit

    • setExternalDigest

      public void setExternalDigest(byte[] digest, byte[] RSAdata, String digestEncryptionAlgorithm)
      Sets the digest/signature to an external calculated value.
      Parameters:
      digest - the digest. This is the actual signature
      RSAdata - the extra data that goes into the data tag in PKCS#7
      digestEncryptionAlgorithm - the encryption algorithm. It may must be null if the digest is also null. If the digest is not null then it may be "RSA" or "DSA"

    • getReason

      public String getReason()
      Gets the signing reason.
      Returns:
      the signing reason

    • setReason

      public void setReason(String reason)
      Sets the signing reason.
      Parameters:
      reason - the signing reason

    • getLocation

      public String getLocation()
      Gets the signing location.
      Returns:
      the signing location

    • setLocation

      public void setLocation(String location)
      Sets the signing location.
      Parameters:
      location - the signing location

    • getProvider

      public String getProvider()
      Returns the Cryptographic Service Provider that will sign the document.
      Returns:
      provider the name of the provider, for example "SUN", or null to use the default provider.

    • setProvider

      public void setProvider(String provider)
      Sets the Cryptographic Service Provider that will sign the document.
      Parameters:
      provider - the name of the provider, for example "SUN", or null to use the default provider.

    • getPrivKey

      public PrivateKey getPrivKey()
      Gets the private key.
      Returns:
      the private key

    • getCertChain

      public Certificate[] getCertChain()
      Gets the certificate chain.
      Returns:
      the certificate chain

    • getCrlList

      public CRL[] getCrlList()
      Gets the certificate revocation list.
      Returns:
      the certificate revocation list

    • getFilter

      public PdfName getFilter()
      Gets the filter used to sign the document.
      Returns:
      the filter used to sign the document

    • isNewField

      public boolean isNewField()
      Checks if a new field was created.
      Returns:
      true if a new field was created, false if signing an existing field or if the signature is invisible

    • getPage

      public int getPage()
      Gets the page number of the field.
      Returns:
      the page number of the field

    • getFieldName

      public String getFieldName()
      Gets the field name.
      Returns:
      the field name

    • getPageRect

      public Rectangle getPageRect()
      Gets the rectangle that represent the position and dimension of the signature in the page.
      Returns:
      the rectangle that represent the position and dimension of the signature in the page

    • getSignDate

      public Calendar getSignDate()
      Gets the signature date.
      Returns:
      the signature date

    • setSignDate

      public void setSignDate(Calendar signDate)
      Sets the signature date.
      Parameters:
      signDate - the signature date

    • getSigout

      ByteBuffer getSigout()

    • setSigout

      void setSigout(ByteBuffer sigout)

    • getOriginalout

      OutputStream getOriginalout()

    • setOriginalout

      void setOriginalout(OutputStream originalout)

    • getTempFile

      public File getTempFile()
      Gets the temporary file.
      Returns:
      the temporary file or null is the document is created in memory

    • setTempFile

      void setTempFile(File tempFile)

    • getNewSigName

      public String getNewSigName()
      Gets a new signature fied name that doesn't clash with any existing name.
      Returns:
      a new signature fied name

    • preClose

      public void preClose() throws IOException, DocumentException
      This is the first method to be called when using external signatures. The general sequence is: preClose(), getDocumentBytes() and close().

      If calling preClose() dont't call PdfStamper.close().

      No external signatures are allowed if this methos is called.

      Throws:
      IOException - on error
      DocumentException - on error

    • preClose

      public void preClose(HashMap exclusionSizes) throws IOException, DocumentException
      This is the first method to be called when using external signatures. The general sequence is: preClose(), getDocumentBytes() and close().

      If calling preClose() dont't call PdfStamper.close().

      If using an external signature exclusionSizes must contain at least the PdfName.CONTENTS key with the size that it will take in the document. Note that due to the hex string coding this size should be byte_size*2+2.

      Parameters:
      exclusionSizes - a HashMap with names and sizes to be excluded in the signature calculation. The key is a PdfName and the value an Integer. At least the PdfName.CONTENTS must be present
      Throws:
      IOException - on error
      DocumentException - on error

    • close

      public void close(PdfDictionary update) throws IOException, DocumentException
      This is the last method to be called when using external signatures. The general sequence is: preClose(), getDocumentBytes() and close().

      update is a PdfDictionary that must have exactly the same keys as the ones provided in preClose(HashMap).

      Parameters:
      update - a PdfDictionary with the key/value that will fill the holes defined in preClose(HashMap)
      Throws:
      DocumentException - on error
      IOException - on error

    • getRangeStream

      public InputStream getRangeStream()
      Gets the document bytes that are hashable when using external signatures. The general sequence is: preClose(), getRangeStream() and close().

      Returns:
      the document bytes that are hashable

    • getCryptoDictionary

      public PdfDictionary getCryptoDictionary()
      Gets the user made signature dictionary. This is the dictionary at the /V key.
      Returns:
      the user made signature dictionary

    • setCryptoDictionary

      public void setCryptoDictionary(PdfDictionary cryptoDictionary)
      Sets a user made signature dictionary. This is the dictionary at the /V key.
      Parameters:
      cryptoDictionary - a user made signature dictionary

    • getStamper

      public PdfStamper getStamper()
      Gets the PdfStamper associated with this instance.
      Returns:
      the PdfStamper associated with this instance

    • setStamper

      void setStamper(PdfStamper stamper)

    • isPreClosed

      public boolean isPreClosed()
      Checks if the document is in the process of closing.
      Returns:
      true if the document is in the process of closing, false otherwise

    • getSigStandard

      public PdfSigGenericPKCS getSigStandard()
      Gets the instance of the standard signature dictionary. This instance is only available after pre close.

      The main use is to insert external signatures.

      Returns:
      the instance of the standard signature dictionary

    • getContact

      public String getContact()
      Gets the signing contact.
      Returns:
      the signing contact

    • setContact

      public void setContact(String contact)
      Sets the signing contact.
      Parameters:
      contact - the signing contact

    • getLayer2Font

      public Font getLayer2Font()
      Gets the n2 and n4 layer font.
      Returns:
      the n2 and n4 layer font

    • setLayer2Font

      public void setLayer2Font(Font layer2Font)
      Sets the n2 and n4 layer font. If the font size is zero, auto-fit will be used.
      Parameters:
      layer2Font - the n2 and n4 font

    • isAcro6Layers

      public boolean isAcro6Layers()
      Gets the Acrobat 6.0 layer mode.
      Returns:
      the Acrobat 6.0 layer mode

    • setAcro6Layers

      public void setAcro6Layers(boolean acro6Layers)
      Acrobat 6.0 and higher recomends that only layer n2 and n4 be present. This method sets that mode.
      Parameters:
      acro6Layers - if true only the layers n2 and n4 will be present

    • setRunDirection

      public void setRunDirection(int runDirection)
      Sets the run direction in the n2 and n4 layer.
      Parameters:
      runDirection - the run direction

    • getRunDirection

      public int getRunDirection()
      Gets the run direction.
      Returns:
      the run direction

    • getSignatureEvent

      public PdfSignatureAppearance.SignatureEvent getSignatureEvent()
      Getter for property signatureEvent.
      Returns:
      Value of property signatureEvent.

    • setSignatureEvent

      public void setSignatureEvent(PdfSignatureAppearance.SignatureEvent signatureEvent)
      Sets the signature event to allow modification of the signature dictionary.
      Parameters:
      signatureEvent - the signature event

    • getImageScale

      public float getImageScale()
      Gets the scaling to be applied to the background image.
      Returns:
      the scaling to be applied to the background image

    • setImageScale

      public void setImageScale(float imageScale)
      Sets the scaling to be applied to the background image. If it's zero the image will fully fill the rectangle. If it's less than zero the image will fill the rectangle but will keep the proportions. If it's greater than zero that scaling will be applied. In any of the cases the image will always be centered. It's zero by default.
      Parameters:
      imageScale - the scaling to be applied to the background image