1 package org.bouncycastle.asn1.sec; 2 3 import java.math.BigInteger; 4 import java.util.Enumeration; 5 6 import org.bouncycastle.asn1.ASN1Encodable; 7 import org.bouncycastle.asn1.ASN1EncodableVector; 8 import org.bouncycastle.asn1.ASN1Integer; 9 import org.bouncycastle.asn1.ASN1Object; 10 import org.bouncycastle.asn1.ASN1OctetString; 11 import org.bouncycastle.asn1.ASN1Primitive; 12 import org.bouncycastle.asn1.ASN1Sequence; 13 import org.bouncycastle.asn1.ASN1TaggedObject; 14 import org.bouncycastle.asn1.DERBitString; 15 import org.bouncycastle.asn1.DEROctetString; 16 import org.bouncycastle.asn1.DERSequence; 17 import org.bouncycastle.asn1.DERTaggedObject; 18 import org.bouncycastle.util.BigIntegers; 19 20 /** 21 * the elliptic curve private key object from SEC 1 22 * @deprecated use ECPrivateKey 23 */ 24 public class ECPrivateKeyStructure 25 extends ASN1Object 26 { 27 private ASN1Sequence seq; 28 ECPrivateKeyStructure( ASN1Sequence seq)29 public ECPrivateKeyStructure( 30 ASN1Sequence seq) 31 { 32 this.seq = seq; 33 } 34 ECPrivateKeyStructure( BigInteger key)35 public ECPrivateKeyStructure( 36 BigInteger key) 37 { 38 byte[] bytes = BigIntegers.asUnsignedByteArray(key); 39 40 ASN1EncodableVector v = new ASN1EncodableVector(); 41 42 v.add(new ASN1Integer(1)); 43 v.add(new DEROctetString(bytes)); 44 45 seq = new DERSequence(v); 46 } 47 ECPrivateKeyStructure( BigInteger key, ASN1Encodable parameters)48 public ECPrivateKeyStructure( 49 BigInteger key, 50 ASN1Encodable parameters) 51 { 52 this(key, null, parameters); 53 } 54 ECPrivateKeyStructure( BigInteger key, DERBitString publicKey, ASN1Encodable parameters)55 public ECPrivateKeyStructure( 56 BigInteger key, 57 DERBitString publicKey, 58 ASN1Encodable parameters) 59 { 60 byte[] bytes = BigIntegers.asUnsignedByteArray(key); 61 62 ASN1EncodableVector v = new ASN1EncodableVector(); 63 64 v.add(new ASN1Integer(1)); 65 v.add(new DEROctetString(bytes)); 66 67 if (parameters != null) 68 { 69 v.add(new DERTaggedObject(true, 0, parameters)); 70 } 71 72 if (publicKey != null) 73 { 74 v.add(new DERTaggedObject(true, 1, publicKey)); 75 } 76 77 seq = new DERSequence(v); 78 } 79 getKey()80 public BigInteger getKey() 81 { 82 ASN1OctetString octs = (ASN1OctetString)seq.getObjectAt(1); 83 84 return new BigInteger(1, octs.getOctets()); 85 } 86 getPublicKey()87 public DERBitString getPublicKey() 88 { 89 return (DERBitString)getObjectInTag(1); 90 } 91 getParameters()92 public ASN1Primitive getParameters() 93 { 94 return getObjectInTag(0); 95 } 96 getObjectInTag(int tagNo)97 private ASN1Primitive getObjectInTag(int tagNo) 98 { 99 Enumeration e = seq.getObjects(); 100 101 while (e.hasMoreElements()) 102 { 103 ASN1Encodable obj = (ASN1Encodable)e.nextElement(); 104 105 if (obj instanceof ASN1TaggedObject) 106 { 107 ASN1TaggedObject tag = (ASN1TaggedObject)obj; 108 if (tag.getTagNo() == tagNo) 109 { 110 return (ASN1Primitive)((ASN1Encodable)tag.getObject()).toASN1Primitive(); 111 } 112 } 113 } 114 return null; 115 } 116 117 /** 118 * ECPrivateKey ::= SEQUENCE { 119 * version INTEGER { ecPrivkeyVer1(1) } (ecPrivkeyVer1), 120 * privateKey OCTET STRING, 121 * parameters [0] Parameters OPTIONAL, 122 * publicKey [1] BIT STRING OPTIONAL } 123 */ toASN1Primitive()124 public ASN1Primitive toASN1Primitive() 125 { 126 return seq; 127 } 128 } 129