diff options
Diffstat (limited to 'libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/x9/DHValidationParms.java')
-rw-r--r-- | libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/x9/DHValidationParms.java | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/x9/DHValidationParms.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/x9/DHValidationParms.java new file mode 100644 index 000000000..8f5ece200 --- /dev/null +++ b/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/x9/DHValidationParms.java @@ -0,0 +1,80 @@ +package org.spongycastle.asn1.x9; + +import org.spongycastle.asn1.ASN1EncodableVector; +import org.spongycastle.asn1.ASN1Integer; +import org.spongycastle.asn1.ASN1Object; +import org.spongycastle.asn1.ASN1Primitive; +import org.spongycastle.asn1.ASN1Sequence; +import org.spongycastle.asn1.ASN1TaggedObject; +import org.spongycastle.asn1.DERBitString; +import org.spongycastle.asn1.DERSequence; + +public class DHValidationParms extends ASN1Object +{ + private DERBitString seed; + private ASN1Integer pgenCounter; + + public static DHValidationParms getInstance(ASN1TaggedObject obj, boolean explicit) + { + return getInstance(ASN1Sequence.getInstance(obj, explicit)); + } + + public static DHValidationParms getInstance(Object obj) + { + if (obj == null || obj instanceof DHDomainParameters) + { + return (DHValidationParms)obj; + } + + if (obj instanceof ASN1Sequence) + { + return new DHValidationParms((ASN1Sequence)obj); + } + + throw new IllegalArgumentException("Invalid DHValidationParms: " + obj.getClass().getName()); + } + + public DHValidationParms(DERBitString seed, ASN1Integer pgenCounter) + { + if (seed == null) + { + throw new IllegalArgumentException("'seed' cannot be null"); + } + if (pgenCounter == null) + { + throw new IllegalArgumentException("'pgenCounter' cannot be null"); + } + + this.seed = seed; + this.pgenCounter = pgenCounter; + } + + private DHValidationParms(ASN1Sequence seq) + { + if (seq.size() != 2) + { + throw new IllegalArgumentException("Bad sequence size: " + seq.size()); + } + + this.seed = DERBitString.getInstance(seq.getObjectAt(0)); + this.pgenCounter = ASN1Integer.getInstance(seq.getObjectAt(1)); + } + + public DERBitString getSeed() + { + return this.seed; + } + + public ASN1Integer getPgenCounter() + { + return this.pgenCounter; + } + + public ASN1Primitive toASN1Primitive() + { + ASN1EncodableVector v = new ASN1EncodableVector(); + v.add(this.seed); + v.add(this.pgenCounter); + return new DERSequence(v); + } +} |