Reference

All Implemented Interfaces:
```
public class DigitalSignatureInfo.Reference

                    
```
Signature reference dictionary. This dictionary contains the object digest result, including information about how it was computed.

Nested Class Summary

Nested Classes
Modifier and Type Class Description

Field Summary

Fields
Modifier and Type	Field	Description
`public final DigitalSignatureInfo.ReferenceTransformMethod`	`transformMethod`
`public final String`	`digestMethod`
`public final String`	`digestValue`
`public final Range`	`digestLocation`
`public final String`	`dataName`

Constructor Summary

Constructors

Constructor Description

Enum Constant Summary

Enum Constants
Enum Constant Description

Method Summary

Modifier and Type	Method	Description
`DigitalSignatureInfo.ReferenceTransformMethod`	`getTransformMethod()`	Returns the transformation method that was used to generate the digest.
`String`	`getDigestMethod()`	The algorithm used for computing the digest.
`String`	`getDigestValue()`	The result of the digest operation (if required by the transformation) or `null`.
`Range`	`getDigestLocation()`	The location of the digest value in the PDF file in bytes, or `null`.
`String`	`getDataName()`	Name of the object used while computing the object digest.
`String`	`toString()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
- Method Detail
  - getTransformMethod
```
@NonNull() DigitalSignatureInfo.ReferenceTransformMethod getTransformMethod()
```
    Returns the transformation method that was used to generate the digest.
    
    Returns:
    
    The ReferenceTransformMethod that defines how the stored digest was computed.
  - getDigestMethod
```
@Nullable() String getDigestMethod()
```
    The algorithm used for computing the digest. Valid values are "MD5" and "SHA1". May be null.
    
    Returns:
    
    The digestion algorithm used. May be one of "MD5", "SHA1", or null.
  - getDigestValue
```
@Nullable() String getDigestValue()
```
    The result of the digest operation (if required by the transformation) or null.
    
    Returns:
    
    The resulting digest value, or null if not needed by the used transformation method.
  - getDigestLocation
```
@Nullable() Range getDigestLocation()
```
    The location of the digest value in the PDF file in bytes, or null. This value is present when it is required by the transformation method.
    
    Returns:
    
    Position of the digest value inside the PDF (denote as position and length in bytes) or null.
  - getDataName
```
@Nullable() String getDataName()
```
    Name of the object used while computing the object digest. This is only used for FIELDMDP or IDENTITY.
    
    Returns:
    
    Name of the object used for computing the digest or null.
  - toString
```
 String toString()
```