Modul io.github.astrapisixtynine.crypt.data
Package io.github.astrapi69.crypt.data.algorithm

Klasse AlgorithmExtensions

java.lang.Object
io.github.astrapi69.crypt.data.algorithm.AlgorithmExtensions
public final class AlgorithmExtensions extends Object
The class AlgorithmExtensions provides methods to validate if a given algorithm is supported for a specific service and to retrieve the supported algorithms for a service

  • Methodendetails

    • getSupportedAlgorithmsAndKeySizes

      public static <T> Map<String,Set<Integer>> getSupportedAlgorithmsAndKeySizes(String serviceName, Class<T> generatorClass, KeySizeInitializer<T> initializer, int minSize, int maxSize, int increment) throws InvocationTargetException, NoSuchMethodException, IllegalAccessException
      Retrieves a map of supported cryptographic algorithms and their corresponding supported key sizes for a specified service.

      This method identifies the available algorithms for a given cryptographic service (e.g., "KeyPairGenerator") and determines the supported key sizes for each algorithm within a specified range. The determination is based on the capabilities of a provided generator class and an initializer.

      Typparameter:
      T - the type of the generator class used to determine key sizes.
      Parameter:
      serviceName - the name of the cryptographic service (e.g., "KeyPairGenerator").
      generatorClass - the class of the generator used to produce cryptographic keys.
      initializer - a functional interface or lambda expression that initializes the generator class with a specific key size.
      minSize - the minimum key size to consider in the analysis.
      maxSize - the maximum key size to consider in the analysis.
      increment - the step size for iterating through key sizes between minSize and maxSize.
      Gibt zurück:
      a Map<String, Set<Integer>> where each key is the name of a cryptographic algorithm, and each value is a set of integers representing the supported key sizes for that algorithm.
      Löst aus:
      InvocationTargetException - if an error occurs while invoking the initializer or generator methods.
      NoSuchMethodException - if a necessary method to initialize the generator class cannot be found.
      IllegalAccessException - if the initializer or generator method is not accessible.

    • getAlgorithmsFromServiceName

      public static List<String> getAlgorithmsFromServiceName(@NonNull @NonNull String serviceName, @NonNull @NonNull String keyAlgorithm)
      Retrieves a list of algorithms that are appropriate for the specified key algorithm based on the provided service name
      Parameter:
      serviceName - the name of the service, for instance "Signature"
      keyAlgorithm - the key algorithm (e.g., "RSA") for which to find appropriate signature algorithms
      Gibt zurück:
      a list of algorithms that match the specified key algorithm

    • isValid

      public static boolean isValid(@NonNull @NonNull String serviceName, @NonNull @NonNull String algorithm)
      Validates if the provided algorithm is supported for the given service name
      Parameter:
      serviceName - the name of the security service
      algorithm - the algorithm to be validated
      Gibt zurück:
      true if the algorithm is supported, false otherwise

    • getAlgorithms

      public static Set<String> getAlgorithms(@NonNull @NonNull String serviceName)
      Retrieves a set of algorithms for the specified Java cryptographic service

      This method calls the Security.getAlgorithms(String) method to obtain a set of algorithm names supported by the specified security service

      Parameter:
      serviceName - the name of the security service (e.g., "Cipher", "KeyAgreement", "MessageDigest", etc.) for which the supported algorithms are to be retrieved
      Gibt zurück:
      a Set of String containing the names of the algorithms supported by the specified security service. The set is not modifiable
      Löst aus:
      NullPointerException - if serviceName is null
      Siehe auch:

    • getServiceNames

      public static Set<String> getServiceNames(@NonNull @NonNull Provider provider)
      Retrieves all specified Java cryptographic service names from the given Provider object
      Parameter:
      provider - the Provider object
      Gibt zurück:
      a set of all specified Java cryptographic service names from the given Provider object

    • getAllServiceNames

      public static Set<String> getAllServiceNames(Provider[] providers)
      Retrieves all specified Java cryptographic service names from the given Provider array object
      Parameter:
      providers - the array with the Provider objects
      Gibt zurück:
      a set of all specified Java cryptographic service names