Package eu.europa.esig.dss.validation.policy

Class CryptographicSuiteUtils

java.lang.Object

eu.europa.esig.dss.validation.policy.CryptographicSuiteUtils

public final class CryptographicSuiteUtils
extends Object

This class contains supporting methods for processing a eu.europa.esig.dss.model.policy.CryptographicSuite

Method Summary

Modifier and Type	Method	Description
static Date	getExpirationDate(CryptographicSuite cryptographicSuite, DigestAlgorithm digestAlgorithm)	Gets an expiration date for the digest algorithm with name digestAlgoToSearch.
static Date	getExpirationDate(CryptographicSuite cryptographicSuite, EncryptionAlgorithm encryptionAlgorithm, Integer keySize)	Gets an expiration date for the encryption algorithm with name algoToSearch and keyLength.
static Date	getExpirationDate(CryptographicSuite cryptographicSuite, EncryptionAlgorithm encryptionAlgorithm, String keyLength)	Gets an expiration date for the encryption algorithm with name algoToSearch and keyLength.
static List<DigestAlgorithm>	getReliableDigestAlgorithmsAtTime(CryptographicSuite cryptographicSuite, Date validationTime)	This method returns a list of reliable DigestAlgorithm according to the current validation policy at the given validation time
static List<EncryptionAlgorithmWithMinKeySize>	getReliableEncryptionAlgorithmsWithMinimalKeyLengthAtTime(CryptographicSuite cryptographicSuite, Date validationTime)	This method returns a map between reliable EncryptionAlgorithm according to the current validation policy and their minimal accepted key length at the given time.
static boolean	isDigestAlgorithmReliable(CryptographicSuite cryptographicSuite, DigestAlgorithm digestAlgorithm)	Checks if the given DigestAlgorithm is reliable (acceptable)
static boolean	isEncryptionAlgorithmReliable(CryptographicSuite cryptographicSuite, EncryptionAlgorithm encryptionAlgorithm)	Checks if the given EncryptionAlgorithm is reliable (acceptable)
static boolean	isEncryptionAlgorithmWithKeySizeReliable(CryptographicSuite cryptographicSuite, EncryptionAlgorithm encryptionAlgorithm, Integer keySize)	Checks if the {code keyLength} for EncryptionAlgorithm is reliable (acceptable)
static boolean	isEncryptionAlgorithmWithKeySizeReliable(CryptographicSuite cryptographicSuite, EncryptionAlgorithm encryptionAlgorithm, String keyLength)	Checks if the {code keyLength} for EncryptionAlgorithm is reliable (acceptable)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

isEncryptionAlgorithmReliable

public static boolean isEncryptionAlgorithmReliable(CryptographicSuite cryptographicSuite,
 EncryptionAlgorithm encryptionAlgorithm)

Checks if the given EncryptionAlgorithm is reliable (acceptable)

Parameters:

cryptographicSuite - CryptographicSuite

encryptionAlgorithm - EncryptionAlgorithm to check

Returns:

TRUE if the algorithm is reliable, FALSE otherwise

isDigestAlgorithmReliable

public static boolean isDigestAlgorithmReliable(CryptographicSuite cryptographicSuite,
 DigestAlgorithm digestAlgorithm)

Checks if the given DigestAlgorithm is reliable (acceptable)

Parameters:

cryptographicSuite - CryptographicSuite

digestAlgorithm - DigestAlgorithm to check

Returns:

TRUE if the algorithm is reliable, FALSE otherwise

isEncryptionAlgorithmWithKeySizeReliable

public static boolean isEncryptionAlgorithmWithKeySizeReliable(CryptographicSuite cryptographicSuite,
 EncryptionAlgorithm encryptionAlgorithm,
 String keyLength)

Checks if the {code keyLength} for EncryptionAlgorithm is reliable (acceptable)

Parameters:

cryptographicSuite - CryptographicSuite

encryptionAlgorithm - EncryptionAlgorithm to check key length for

keyLength - String the key length to be checked

Returns:

TRUE if the key length for the algorithm is reliable, FALSE otherwise

isEncryptionAlgorithmWithKeySizeReliable

public static boolean isEncryptionAlgorithmWithKeySizeReliable(CryptographicSuite cryptographicSuite,
 EncryptionAlgorithm encryptionAlgorithm,
 Integer keySize)

Checks if the {code keyLength} for EncryptionAlgorithm is reliable (acceptable)

Parameters:

cryptographicSuite - CryptographicSuite

encryptionAlgorithm - EncryptionAlgorithm to check key length for

keySize - Integer the key length to be checked

Returns:

TRUE if the key length for the algorithm is reliable, FALSE otherwise

getExpirationDate

public static Date getExpirationDate(CryptographicSuite cryptographicSuite,
 EncryptionAlgorithm encryptionAlgorithm,
 String keyLength)

Gets an expiration date for the encryption algorithm with name algoToSearch and keyLength. Returns null if the expiration date is not defined for the algorithm.

Parameters:

cryptographicSuite - CryptographicSuite

encryptionAlgorithm - EncryptionAlgorithm to get expiration date for

keyLength - String key length used to sign the token

Returns:

Date

getExpirationDate

public static Date getExpirationDate(CryptographicSuite cryptographicSuite,
 EncryptionAlgorithm encryptionAlgorithm,
 Integer keySize)

Gets an expiration date for the encryption algorithm with name algoToSearch and keyLength. Returns null if the expiration date is not defined for the algorithm.

Parameters:

cryptographicSuite - CryptographicSuite

encryptionAlgorithm - EncryptionAlgorithm to get expiration date for

keySize - Integer key length used to sign the token

Returns:

Date

getExpirationDate

public static Date getExpirationDate(CryptographicSuite cryptographicSuite,
 DigestAlgorithm digestAlgorithm)

Gets an expiration date for the digest algorithm with name digestAlgoToSearch. Returns null if the expiration date is not defined for the algorithm.

Parameters:

cryptographicSuite - CryptographicSuite

digestAlgorithm - DigestAlgorithm the algorithm to get expiration date for

Returns:

Date

getReliableDigestAlgorithmsAtTime

public static List<DigestAlgorithm> getReliableDigestAlgorithmsAtTime(CryptographicSuite cryptographicSuite,
 Date validationTime)

This method returns a list of reliable DigestAlgorithm according to the current validation policy at the given validation time

Parameters:

cryptographicSuite - CryptographicSuite

validationTime - Date to verify against

Returns:

a list of DigestAlgorithms

getReliableEncryptionAlgorithmsWithMinimalKeyLengthAtTime

public static List<EncryptionAlgorithmWithMinKeySize> getReliableEncryptionAlgorithmsWithMinimalKeyLengthAtTime(CryptographicSuite cryptographicSuite,
 Date validationTime)

This method returns a map between reliable EncryptionAlgorithm according to the current validation policy and their minimal accepted key length at the given time.

Parameters:

cryptographicSuite - CryptographicSuite

validationTime - Date to verify against

Returns:

a list of EncryptionAlgorithmWithMinKeySizes