package org.bouncycastle.asn1.cms; 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.ASN1TaggedObject; import org.bouncycastle.asn1.DERSequence; import org.bouncycastle.asn1.x509.AlgorithmIdentifier; /** * RFC 5652: * Content encryption key delivery mechanisms. *
* KeyTransRecipientInfo ::= SEQUENCE { * version CMSVersion, -- always set to 0 or 2 * rid RecipientIdentifier, * keyEncryptionAlgorithm KeyEncryptionAlgorithmIdentifier, * encryptedKey EncryptedKey * } **/ public class KeyTransRecipientInfo extends ASN1Object { private ASN1Integer version; private RecipientIdentifier rid; private AlgorithmIdentifier keyEncryptionAlgorithm; private ASN1OctetString encryptedKey; public KeyTransRecipientInfo( RecipientIdentifier rid, AlgorithmIdentifier keyEncryptionAlgorithm, ASN1OctetString encryptedKey) { if (rid.toASN1Primitive() instanceof ASN1TaggedObject) { this.version = new ASN1Integer(2); } else { this.version = new ASN1Integer(0); } this.rid = rid; this.keyEncryptionAlgorithm = keyEncryptionAlgorithm; this.encryptedKey = encryptedKey; } /** * @deprecated use getInstance() */ public KeyTransRecipientInfo( ASN1Sequence seq) { this.version = (ASN1Integer)seq.getObjectAt(0); this.rid = RecipientIdentifier.getInstance(seq.getObjectAt(1)); this.keyEncryptionAlgorithm = AlgorithmIdentifier.getInstance(seq.getObjectAt(2)); this.encryptedKey = (ASN1OctetString)seq.getObjectAt(3); } /** * Return a KeyTransRecipientInfo object from the given object. *
* Accepted inputs: *