| package org.bouncycastle.asn1.cms; |
| |
| import org.bouncycastle.asn1.ASN1Choice; |
| import org.bouncycastle.asn1.ASN1Encodable; |
| import org.bouncycastle.asn1.ASN1Object; |
| import org.bouncycastle.asn1.ASN1OctetString; |
| import org.bouncycastle.asn1.ASN1Primitive; |
| import org.bouncycastle.asn1.ASN1TaggedObject; |
| import org.bouncycastle.asn1.DERTaggedObject; |
| |
| /** |
| * <a href="http://tools.ietf.org/html/rfc5652#section-5.3">RFC 5652</a>: |
| * Identify who signed the containing {@link SignerInfo} object. |
| * <p> |
| * The certificates referred to by this are at containing {@link SignedData} structure. |
| * <p> |
| * <pre> |
| * SignerIdentifier ::= CHOICE { |
| * issuerAndSerialNumber IssuerAndSerialNumber, |
| * subjectKeyIdentifier [0] SubjectKeyIdentifier |
| * } |
| * |
| * SubjectKeyIdentifier ::= OCTET STRING |
| * </pre> |
| */ |
| public class SignerIdentifier |
| extends ASN1Object |
| implements ASN1Choice |
| { |
| private ASN1Encodable id; |
| |
| public SignerIdentifier( |
| IssuerAndSerialNumber id) |
| { |
| this.id = id; |
| } |
| |
| public SignerIdentifier( |
| ASN1OctetString id) |
| { |
| this.id = new DERTaggedObject(false, 0, id); |
| } |
| |
| public SignerIdentifier( |
| ASN1Primitive id) |
| { |
| this.id = id; |
| } |
| |
| /** |
| * Return a SignerIdentifier object from the given object. |
| * <p> |
| * Accepted inputs: |
| * <ul> |
| * <li> null → null |
| * <li> {@link SignerIdentifier} object |
| * <li> {@link IssuerAndSerialNumber} object |
| * <li> {@link org.bouncycastle.asn1.ASN1OctetString#getInstance(java.lang.Object) ASN1OctetString} input formats with SignerIdentifier structure inside |
| * <li> {@link org.bouncycastle.asn1.ASN1Primitive ASN1Primitive} for SignerIdentifier constructor. |
| * </ul> |
| * |
| * @param o the object we want converted. |
| * @exception IllegalArgumentException if the object cannot be converted. |
| */ |
| public static SignerIdentifier getInstance( |
| Object o) |
| { |
| if (o == null || o instanceof SignerIdentifier) |
| { |
| return (SignerIdentifier)o; |
| } |
| |
| if (o instanceof IssuerAndSerialNumber) |
| { |
| return new SignerIdentifier((IssuerAndSerialNumber)o); |
| } |
| |
| if (o instanceof ASN1OctetString) |
| { |
| return new SignerIdentifier((ASN1OctetString)o); |
| } |
| |
| if (o instanceof ASN1Primitive) |
| { |
| return new SignerIdentifier((ASN1Primitive)o); |
| } |
| |
| throw new IllegalArgumentException( |
| "Illegal object in SignerIdentifier: " + o.getClass().getName()); |
| } |
| |
| public boolean isTagged() |
| { |
| return (id instanceof ASN1TaggedObject); |
| } |
| |
| public ASN1Encodable getId() |
| { |
| if (id instanceof ASN1TaggedObject) |
| { |
| return ASN1OctetString.getInstance((ASN1TaggedObject)id, false); |
| } |
| |
| return id; |
| } |
| |
| /** |
| * Produce an object suitable for an ASN1OutputStream. |
| */ |
| public ASN1Primitive toASN1Primitive() |
| { |
| return id.toASN1Primitive(); |
| } |
| } |