1 /* GENERATED SOURCE. DO NOT MODIFY. */ 2 package com.android.org.bouncycastle.jcajce.spec; 3 4 import javax.crypto.spec.PBEKeySpec; 5 6 import com.android.org.bouncycastle.asn1.DERNull; 7 import com.android.org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers; 8 import com.android.org.bouncycastle.asn1.x509.AlgorithmIdentifier; 9 10 /** 11 * Extension of PBEKeySpec which takes into account the PRF algorithm setting available in PKCS#5 PBKDF2. 12 * @hide This class is not part of the Android public SDK API 13 */ 14 public class PBKDF2KeySpec 15 extends PBEKeySpec 16 { 17 private static final AlgorithmIdentifier defaultPRF = new AlgorithmIdentifier(PKCSObjectIdentifiers.id_hmacWithSHA1, DERNull.INSTANCE); 18 19 private AlgorithmIdentifier prf; 20 21 /** 22 * Base constructor. 23 * 24 * @param password password to use as the seed of the PBE key generator. 25 * @param salt salt to use in the generator, 26 * @param iterationCount iteration count to use in the generator. 27 * @param keySize size of the key to be generated (in bits). 28 * @param prf identifier and parameters for the PRF algorithm to use. 29 */ 30 public PBKDF2KeySpec(char[] password, byte[] salt, int iterationCount, int keySize, AlgorithmIdentifier prf) 31 { 32 super(password, salt, iterationCount, keySize); 33 34 this.prf = prf; 35 } 36 37 /** 38 * Return true if this spec is for the default PRF (HmacSHA1), false otherwise. 39 * 40 * @return true if this spec uses the default PRF, false otherwise. 41 */ 42 public boolean isDefaultPrf() 43 { 44 return defaultPRF.equals(prf); 45 } 46 47 /** 48 * Return an AlgorithmIdentifier representing the PRF. 49 * 50 * @return the PRF's AlgorithmIdentifier. 51 */ 52 public AlgorithmIdentifier getPrf() 53 { 54 return prf; 55 } 56 } 57
