DynamicBasicConstraintsExtension

java.lang.Object
- com.itextpdf.signatures.validation.extensions.CertificateExtension
- - com.itextpdf.signatures.validation.extensions.DynamicCertificateExtension
  - - com.itextpdf.signatures.validation.extensions.DynamicBasicConstraintsExtension

```
public class DynamicBasicConstraintsExtension
extends DynamicCertificateExtension
```
Class representing "Basic Constraints" certificate extension, which uses provided amount of certificates in chain during the comparison.

Field Summary

Fields
Modifier and Type Field Description

static java.lang.String ERROR_MESSAGE

private java.lang.String errorMessage

private static IBouncyCastleFactory FACTORY
- Fields inherited from class com.itextpdf.signatures.validation.extensions.CertificateExtension
  EXCEPTION_OCCURRED, EXPECTED_EXTENSION_ID_AND_VALUE, EXTENSION_NOT_FOUND, FOUND_VALUE

Constructor Summary

Constructors
Constructor Description

DynamicBasicConstraintsExtension()
Create new instance of DynamicBasicConstraintsExtension.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`existsInCertificate(java.security.cert.X509Certificate certificate)`	Check if this extension is present in the provided certificate.
`java.lang.String`	`getMessage()`	Returns a message with extra information about the check.

Methods inherited from class com.itextpdf.signatures.validation.extensions.DynamicCertificateExtension
getCertificateChainSize, withCertificateChainSize

Methods inherited from class com.itextpdf.signatures.validation.extensions.CertificateExtension
equals, getExtensionOid, getExtensionValue, hashCode

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

- Field Detail
  - FACTORY
```
private static final IBouncyCastleFactory FACTORY
```
  - ERROR_MESSAGE
```
public static final java.lang.String ERROR_MESSAGE
```
    See Also:
    
    Constant Field Values
  - errorMessage
```
private java.lang.String errorMessage
```
- Constructor Detail
  - DynamicBasicConstraintsExtension
```
public DynamicBasicConstraintsExtension()
```
    Create new instance of DynamicBasicConstraintsExtension.
- Method Detail
  - existsInCertificate
```
public boolean existsInCertificate(java.security.cert.X509Certificate certificate)
```
    Check if this extension is present in the provided certificate. In case of DynamicBasicConstraintsExtension, check if path length for this extension is less or equal to the path length, specified in the certificate.
    
    Overrides:
    
    existsInCertificate in class CertificateExtension
    
    Parameters:
    
    certificate - X509Certificate in which this extension shall be present
    
    Returns:
    
    true if this path length is less or equal to a one from the certificate, false otherwise
  - getMessage
```
public java.lang.String getMessage()
```
    Description copied from class: CertificateExtension
    
    Returns a message with extra information about the check.
    
    Overrides:
    
    getMessage in class CertificateExtension
    
    Returns:
    
    a message with extra information about the check.