| package org.bouncycastle.asn1.cmp; |
| |
| import org.bouncycastle.asn1.ASN1EncodableVector; |
| import org.bouncycastle.asn1.ASN1Integer; |
| import org.bouncycastle.asn1.ASN1Object; |
| import org.bouncycastle.asn1.ASN1OctetString; |
| import org.bouncycastle.asn1.ASN1Primitive; |
| import org.bouncycastle.asn1.ASN1Sequence; |
| import org.bouncycastle.asn1.DEROctetString; |
| import org.bouncycastle.asn1.DERSequence; |
| import org.bouncycastle.asn1.x509.AlgorithmIdentifier; |
| |
| public class PBMParameter |
| extends ASN1Object |
| { |
| private ASN1OctetString salt; |
| private AlgorithmIdentifier owf; |
| private ASN1Integer iterationCount; |
| private AlgorithmIdentifier mac; |
| |
| private PBMParameter(ASN1Sequence seq) |
| { |
| salt = ASN1OctetString.getInstance(seq.getObjectAt(0)); |
| owf = AlgorithmIdentifier.getInstance(seq.getObjectAt(1)); |
| iterationCount = ASN1Integer.getInstance(seq.getObjectAt(2)); |
| mac = AlgorithmIdentifier.getInstance(seq.getObjectAt(3)); |
| } |
| |
| public static PBMParameter getInstance(Object o) |
| { |
| if (o instanceof PBMParameter) |
| { |
| return (PBMParameter)o; |
| } |
| |
| if (o != null) |
| { |
| return new PBMParameter(ASN1Sequence.getInstance(o)); |
| } |
| |
| return null; |
| } |
| |
| public PBMParameter( |
| byte[] salt, |
| AlgorithmIdentifier owf, |
| int iterationCount, |
| AlgorithmIdentifier mac) |
| { |
| this(new DEROctetString(salt), owf, |
| new ASN1Integer(iterationCount), mac); |
| } |
| |
| public PBMParameter( |
| ASN1OctetString salt, |
| AlgorithmIdentifier owf, |
| ASN1Integer iterationCount, |
| AlgorithmIdentifier mac) |
| { |
| this.salt = salt; |
| this.owf = owf; |
| this.iterationCount = iterationCount; |
| this.mac = mac; |
| } |
| |
| public ASN1OctetString getSalt() |
| { |
| return salt; |
| } |
| |
| public AlgorithmIdentifier getOwf() |
| { |
| return owf; |
| } |
| |
| public ASN1Integer getIterationCount() |
| { |
| return iterationCount; |
| } |
| |
| public AlgorithmIdentifier getMac() |
| { |
| return mac; |
| } |
| |
| /** |
| * <pre> |
| * PBMParameter ::= SEQUENCE { |
| * salt OCTET STRING, |
| * -- note: implementations MAY wish to limit acceptable sizes |
| * -- of this string to values appropriate for their environment |
| * -- in order to reduce the risk of denial-of-service attacks |
| * owf AlgorithmIdentifier, |
| * -- AlgId for a One-Way Function (SHA-1 recommended) |
| * iterationCount INTEGER, |
| * -- number of times the OWF is applied |
| * -- note: implementations MAY wish to limit acceptable sizes |
| * -- of this integer to values appropriate for their environment |
| * -- in order to reduce the risk of denial-of-service attacks |
| * mac AlgorithmIdentifier |
| * -- the MAC AlgId (e.g., DES-MAC, Triple-DES-MAC [PKCS11], |
| * } -- or HMAC [RFC2104, RFC2202]) |
| * </pre> |
| * @return a basic ASN.1 object representation. |
| */ |
| public ASN1Primitive toASN1Primitive() |
| { |
| ASN1EncodableVector v = new ASN1EncodableVector(); |
| |
| v.add(salt); |
| v.add(owf); |
| v.add(iterationCount); |
| v.add(mac); |
| |
| return new DERSequence(v); |
| } |
| } |