AlgorithmConstraints (Java Platform SE 7 b138)

```
public interface AlgorithmConstraints
```
This interface specifies constraints for cryptographic algorithms, keys (key sizes), and other algorithm parameters.
AlgorithmConstraints objects are immutable. An implementation of this interface should not provide methods that can change the state of an instance once it has been created.
Note that AlgorithmConstraints can be used to represent the restrictions described by the security properties jdk.certpath.disabledAlgorithms and jdk.tls.disabledAlgorithms, or could be used by a concrete PKIXCertPathChecker to check whether a specified certificate in the certification path contains the required algorithm constraints.

Since:

1.7

See Also:
SSLParameters.getAlgorithmConstraints(), SSLParameters.setAlgorithmConstraints(AlgorithmConstraints)

Method Summary

Methods
Modifier and Type	Method and Description
`boolean`	`permits(Set<CryptoPrimitive> primitives, Key key)` Determines whether a key is granted permission for the specified cryptographic primitives.
`boolean`	`permits(Set<CryptoPrimitive> primitives, String algorithm, AlgorithmParameters parameters)` Determines whether an algorithm is granted permission for the specified cryptographic primitives.
`boolean`	`permits(Set<CryptoPrimitive> primitives, String algorithm, Key key, AlgorithmParameters parameters)` Determines whether an algorithm and the corresponding key are granted permission for the specified cryptographic primitives.

- Method Detail
  - permits
```
boolean permits(Set<CryptoPrimitive> primitives,
              String algorithm,
              AlgorithmParameters parameters)
```
    Determines whether an algorithm is granted permission for the specified cryptographic primitives.
    
    Parameters:
    primitives - a set of cryptographic primitives
    algorithm - the algorithm name
    parameters - the algorithm parameters, or null if no additional parameters
    
    Returns:
    true if the algorithm is permitted and can be used for all of the specified cryptographic primitives
    
    Throws:
    
    IllegalArgumentException - if primitives or algorithm is null or empty
  - permits
```
boolean permits(Set<CryptoPrimitive> primitives,
              Key key)
```
    Determines whether a key is granted permission for the specified cryptographic primitives.
    This method is usually used to check key size and key usage.
    
    Parameters:
    primitives - a set of cryptographic primitives
    key - the key
    
    Returns:
    true if the key can be used for all of the specified cryptographic primitives
    
    Throws:
    
    IllegalArgumentException - if primitives is null or empty, or the key is null
  - permits
```
boolean permits(Set<CryptoPrimitive> primitives,
              String algorithm,
              Key key,
              AlgorithmParameters parameters)
```
    Determines whether an algorithm and the corresponding key are granted permission for the specified cryptographic primitives.
    
    Parameters:
    primitives - a set of cryptographic primitives
    algorithm - the algorithm name
    key - the key
    parameters - the algorithm parameters, or null if no additional parameters
    
    Returns:
    true if the key and the algorithm can be used for all of the specified cryptographic primitives
    
    Throws:
    
    IllegalArgumentException - if primitives or algorithm is null or empty, or the key is null

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DRAFT ea-b138

Interface AlgorithmConstraints

Method Summary

Method Detail

permits

permits

permits