Interface AlgorithmConstraints
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:
- 
Method SummaryModifier and TypeMethodDescriptionbooleanpermits(Set<CryptoPrimitive> primitives, String algorithm, AlgorithmParameters parameters) Determines whether an algorithm is granted permission for the specified cryptographic primitives.booleanpermits(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.booleanpermits(Set<CryptoPrimitive> primitives, Key key) Determines whether a key is granted permission for the specified cryptographic primitives.
- 
Method Details- 
permitsDetermines 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- nullif no additional parameters
- Returns:
- trueif the algorithm is permitted and can be used for all the specified cryptographic primitives
- Throws:
- IllegalArgumentException- if primitives or algorithm is- nullor empty
 
- 
permitsDetermines 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:
- trueif the key can be used for all the specified cryptographic primitives
- Throws:
- IllegalArgumentException- if primitives is- nullor empty, or the key is- null
 
- 
permitsboolean 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- nullif no additional parameters
- Returns:
- trueif the key and the algorithm can be used for all the specified cryptographic primitives
- Throws:
- IllegalArgumentException- if primitives or algorithm is- nullor empty, or the key is- null
 
 
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