| package org.bouncycastle.asn1.pkcs; |
| |
| import java.math.BigInteger; |
| |
| import org.bouncycastle.asn1.ASN1Encodable; |
| import org.bouncycastle.asn1.ASN1EncodableVector; |
| import org.bouncycastle.asn1.ASN1OctetString; |
| import org.bouncycastle.asn1.ASN1Sequence; |
| import org.bouncycastle.asn1.DERInteger; |
| import org.bouncycastle.asn1.DERObject; |
| import org.bouncycastle.asn1.DEROctetString; |
| import org.bouncycastle.asn1.DERSequence; |
| import org.bouncycastle.asn1.x509.DigestInfo; |
| |
| public class MacData |
| extends ASN1Encodable |
| { |
| private static final BigInteger ONE = BigInteger.valueOf(1); |
| |
| DigestInfo digInfo; |
| byte[] salt; |
| BigInteger iterationCount; |
| |
| public static MacData getInstance( |
| Object obj) |
| { |
| if (obj instanceof MacData) |
| { |
| return (MacData)obj; |
| } |
| else if (obj instanceof ASN1Sequence) |
| { |
| return new MacData((ASN1Sequence)obj); |
| } |
| |
| throw new IllegalArgumentException("unknown object in factory: " + obj.getClass().getName()); |
| } |
| |
| public MacData( |
| ASN1Sequence seq) |
| { |
| this.digInfo = DigestInfo.getInstance(seq.getObjectAt(0)); |
| |
| this.salt = ((ASN1OctetString)seq.getObjectAt(1)).getOctets(); |
| |
| if (seq.size() == 3) |
| { |
| this.iterationCount = ((DERInteger)seq.getObjectAt(2)).getValue(); |
| } |
| else |
| { |
| this.iterationCount = ONE; |
| } |
| } |
| |
| public MacData( |
| DigestInfo digInfo, |
| byte[] salt, |
| int iterationCount) |
| { |
| this.digInfo = digInfo; |
| this.salt = salt; |
| this.iterationCount = BigInteger.valueOf(iterationCount); |
| } |
| |
| public DigestInfo getMac() |
| { |
| return digInfo; |
| } |
| |
| public byte[] getSalt() |
| { |
| return salt; |
| } |
| |
| public BigInteger getIterationCount() |
| { |
| return iterationCount; |
| } |
| |
| /** |
| * <pre> |
| * MacData ::= SEQUENCE { |
| * mac DigestInfo, |
| * macSalt OCTET STRING, |
| * iterations INTEGER DEFAULT 1 |
| * -- Note: The default is for historic reasons and its use is deprecated. A |
| * -- higher value, like 1024 is recommended. |
| * </pre> |
| * @return the basic DERObject construction. |
| */ |
| public DERObject toASN1Object() |
| { |
| ASN1EncodableVector v = new ASN1EncodableVector(); |
| |
| v.add(digInfo); |
| v.add(new DEROctetString(salt)); |
| |
| if (!iterationCount.equals(ONE)) |
| { |
| v.add(new DERInteger(iterationCount)); |
| } |
| |
| return new DERSequence(v); |
| } |
| } |