diff options
author | David Hook <dgh@cryptoworkshop.com> | 2013-05-31 11:07:45 +0400 |
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committer | David Hook <dgh@cryptoworkshop.com> | 2013-05-31 11:07:45 +0400 |
commit | 2b976f5364cfdbc37d3086019d93483c983eb80b (patch) | |
tree | cb846af3fd1d43f9c2562a1fb2d06b997ad8f229 /core/src/main/java/org/bouncycastle/asn1/x509/DSAParameter.java | |
parent | 5f714bd92fbd780d22406f4bc3681be005f6f04a (diff) |
initial reshuffle
Diffstat (limited to 'core/src/main/java/org/bouncycastle/asn1/x509/DSAParameter.java')
-rw-r--r-- | core/src/main/java/org/bouncycastle/asn1/x509/DSAParameter.java | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/core/src/main/java/org/bouncycastle/asn1/x509/DSAParameter.java b/core/src/main/java/org/bouncycastle/asn1/x509/DSAParameter.java new file mode 100644 index 00000000..056798ca --- /dev/null +++ b/core/src/main/java/org/bouncycastle/asn1/x509/DSAParameter.java @@ -0,0 +1,92 @@ +package org.bouncycastle.asn1.x509; + +import java.math.BigInteger; +import java.util.Enumeration; + +import org.bouncycastle.asn1.ASN1EncodableVector; +import org.bouncycastle.asn1.ASN1Integer; +import org.bouncycastle.asn1.ASN1Object; +import org.bouncycastle.asn1.ASN1Primitive; +import org.bouncycastle.asn1.ASN1Sequence; +import org.bouncycastle.asn1.ASN1TaggedObject; +import org.bouncycastle.asn1.DERSequence; + +public class DSAParameter + extends ASN1Object +{ + ASN1Integer p, q, g; + + public static DSAParameter getInstance( + ASN1TaggedObject obj, + boolean explicit) + { + return getInstance(ASN1Sequence.getInstance(obj, explicit)); + } + + public static DSAParameter getInstance( + Object obj) + { + if (obj instanceof DSAParameter) + { + return (DSAParameter)obj; + } + + if(obj != null) + { + return new DSAParameter(ASN1Sequence.getInstance(obj)); + } + + return null; + } + + public DSAParameter( + BigInteger p, + BigInteger q, + BigInteger g) + { + this.p = new ASN1Integer(p); + this.q = new ASN1Integer(q); + this.g = new ASN1Integer(g); + } + + private DSAParameter( + ASN1Sequence seq) + { + if (seq.size() != 3) + { + throw new IllegalArgumentException("Bad sequence size: " + seq.size()); + } + + Enumeration e = seq.getObjects(); + + p = ASN1Integer.getInstance(e.nextElement()); + q = ASN1Integer.getInstance(e.nextElement()); + g = ASN1Integer.getInstance(e.nextElement()); + } + + public BigInteger getP() + { + return p.getPositiveValue(); + } + + public BigInteger getQ() + { + return q.getPositiveValue(); + } + + public BigInteger getG() + { + return g.getPositiveValue(); + } + + public ASN1Primitive toASN1Primitive() + { + ASN1EncodableVector v = new ASN1EncodableVector(); + + v.add(p); + v.add(q); + v.add(g); + + return new DERSequence(v); + } +} |