001package org.apache.commons.ssl.org.bouncycastle.asn1.pkcs; 002 003import java.math.BigInteger; 004 005import org.apache.commons.ssl.org.bouncycastle.asn1.ASN1EncodableVector; 006import org.apache.commons.ssl.org.bouncycastle.asn1.ASN1Integer; 007import org.apache.commons.ssl.org.bouncycastle.asn1.ASN1Object; 008import org.apache.commons.ssl.org.bouncycastle.asn1.ASN1OctetString; 009import org.apache.commons.ssl.org.bouncycastle.asn1.ASN1Primitive; 010import org.apache.commons.ssl.org.bouncycastle.asn1.ASN1Sequence; 011import org.apache.commons.ssl.org.bouncycastle.asn1.DEROctetString; 012import org.apache.commons.ssl.org.bouncycastle.asn1.DERSequence; 013 014public class PBEParameter 015 extends ASN1Object 016{ 017 ASN1Integer iterations; 018 ASN1OctetString salt; 019 020 public PBEParameter( 021 byte[] salt, 022 int iterations) 023 { 024 if (salt.length != 8) 025 { 026 throw new IllegalArgumentException("salt length must be 8"); 027 } 028 this.salt = new DEROctetString(salt); 029 this.iterations = new ASN1Integer(iterations); 030 } 031 032 private PBEParameter( 033 ASN1Sequence seq) 034 { 035 salt = (ASN1OctetString)seq.getObjectAt(0); 036 iterations = (ASN1Integer)seq.getObjectAt(1); 037 } 038 039 public static PBEParameter getInstance( 040 Object obj) 041 { 042 if (obj instanceof PBEParameter) 043 { 044 return (PBEParameter)obj; 045 } 046 else if (obj != null) 047 { 048 return new PBEParameter(ASN1Sequence.getInstance(obj)); 049 } 050 051 return null; 052 } 053 054 public BigInteger getIterationCount() 055 { 056 return iterations.getValue(); 057 } 058 059 public byte[] getSalt() 060 { 061 return salt.getOctets(); 062 } 063 064 public ASN1Primitive toASN1Primitive() 065 { 066 ASN1EncodableVector v = new ASN1EncodableVector(); 067 068 v.add(salt); 069 v.add(iterations); 070 071 return new DERSequence(v); 072 } 073}