Interface AlgorithmConstraints
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public interface AlgorithmConstraintsThis interface specifies constraints for cryptographic algorithms, keys (key sizes), and other algorithm parameters.AlgorithmConstraintsobjects 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
AlgorithmConstraintscan be used to represent the restrictions described by the security propertiesjdk.certpath.disabledAlgorithmsandjdk.tls.disabledAlgorithms, or could be used by a concretePKIXCertPathCheckerto check whether a specified certificate in the certification path contains the required algorithm constraints.
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method and Description booleanpermits(Set<CryptoPrimitive> primitives, Key key)Determines whether a key is granted permission for the specified cryptographic primitives.booleanpermits(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.
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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:
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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:
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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:
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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:
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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:
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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:
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IllegalArgumentException- if primitives or algorithm is null or empty, or the key is null
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