001package org.apache.commons.ssl.org.bouncycastle.asn1.cms; 002 003import org.apache.commons.ssl.org.bouncycastle.asn1.ASN1EncodableVector; 004import org.apache.commons.ssl.org.bouncycastle.asn1.ASN1Object; 005import org.apache.commons.ssl.org.bouncycastle.asn1.ASN1Primitive; 006import org.apache.commons.ssl.org.bouncycastle.asn1.ASN1Sequence; 007import org.apache.commons.ssl.org.bouncycastle.asn1.ASN1TaggedObject; 008import org.apache.commons.ssl.org.bouncycastle.asn1.DERBitString; 009import org.apache.commons.ssl.org.bouncycastle.asn1.DERSequence; 010import org.apache.commons.ssl.org.bouncycastle.asn1.x509.AlgorithmIdentifier; 011 012/** 013 * <a href="http://tools.ietf.org/html/rfc5652#section-6.2.2">RFC 5652</a>: 014 * Content encryption key delivery mechanisms. 015 * <p> 016 * <pre> 017 * OriginatorPublicKey ::= SEQUENCE { 018 * algorithm AlgorithmIdentifier, 019 * publicKey BIT STRING 020 * } 021 * </pre> 022 */ 023public class OriginatorPublicKey 024 extends ASN1Object 025{ 026 private AlgorithmIdentifier algorithm; 027 private DERBitString publicKey; 028 029 public OriginatorPublicKey( 030 AlgorithmIdentifier algorithm, 031 byte[] publicKey) 032 { 033 this.algorithm = algorithm; 034 this.publicKey = new DERBitString(publicKey); 035 } 036 037 /** 038 * @deprecated use getInstance() 039 */ 040 public OriginatorPublicKey( 041 ASN1Sequence seq) 042 { 043 algorithm = AlgorithmIdentifier.getInstance(seq.getObjectAt(0)); 044 publicKey = (DERBitString)seq.getObjectAt(1); 045 } 046 047 /** 048 * Return an OriginatorPublicKey object from a tagged object. 049 * 050 * @param obj the tagged object holding the object we want. 051 * @param explicit true if the object is meant to be explicitly 052 * tagged false otherwise. 053 * @exception IllegalArgumentException if the object held by the 054 * tagged object cannot be converted. 055 */ 056 public static OriginatorPublicKey getInstance( 057 ASN1TaggedObject obj, 058 boolean explicit) 059 { 060 return getInstance(ASN1Sequence.getInstance(obj, explicit)); 061 } 062 063 /** 064 * Return an OriginatorPublicKey object from the given object. 065 * <p> 066 * Accepted inputs: 067 * <ul> 068 * <li> null → null 069 * <li> {@link OriginatorPublicKey} object 070 * <li> {@link org.bouncycastle.asn1.ASN1Sequence#getInstance(java.lang.Object) ASN1Sequence} input formats with OriginatorPublicKey structure inside 071 * </ul> 072 * 073 * @param obj the object we want converted. 074 * @exception IllegalArgumentException if the object cannot be converted. 075 */ 076 public static OriginatorPublicKey getInstance( 077 Object obj) 078 { 079 if (obj instanceof OriginatorPublicKey) 080 { 081 return (OriginatorPublicKey)obj; 082 } 083 084 if (obj != null) 085 { 086 return new OriginatorPublicKey(ASN1Sequence.getInstance(obj)); 087 } 088 089 return null; 090 } 091 092 public AlgorithmIdentifier getAlgorithm() 093 { 094 return algorithm; 095 } 096 097 public DERBitString getPublicKey() 098 { 099 return publicKey; 100 } 101 102 /** 103 * Produce an object suitable for an ASN1OutputStream. 104 */ 105 public ASN1Primitive toASN1Primitive() 106 { 107 ASN1EncodableVector v = new ASN1EncodableVector(); 108 109 v.add(algorithm); 110 v.add(publicKey); 111 112 return new DERSequence(v); 113 } 114}