| package org.bouncycastle.asn1.cms; |
| |
| import java.io.IOException; |
| |
| import org.bouncycastle.asn1.ASN1Encodable; |
| import org.bouncycastle.asn1.ASN1ObjectIdentifier; |
| import org.bouncycastle.asn1.ASN1SequenceParser; |
| import org.bouncycastle.asn1.ASN1TaggedObjectParser; |
| import org.bouncycastle.asn1.x509.AlgorithmIdentifier; |
| |
| /** |
| * Parser for <a href="http://tools.ietf.org/html/rfc5652#section-6.1">RFC 5652</a> EncryptedContentInfo object. |
| * <p> |
| * <pre> |
| * EncryptedContentInfo ::= SEQUENCE { |
| * contentType ContentType, |
| * contentEncryptionAlgorithm ContentEncryptionAlgorithmIdentifier, |
| * encryptedContent [0] IMPLICIT EncryptedContent OPTIONAL |
| * } |
| * </pre> |
| */ |
| public class EncryptedContentInfoParser |
| { |
| private ASN1ObjectIdentifier _contentType; |
| private AlgorithmIdentifier _contentEncryptionAlgorithm; |
| private ASN1TaggedObjectParser _encryptedContent; |
| |
| public EncryptedContentInfoParser( |
| ASN1SequenceParser seq) |
| throws IOException |
| { |
| _contentType = (ASN1ObjectIdentifier)seq.readObject(); |
| _contentEncryptionAlgorithm = AlgorithmIdentifier.getInstance(seq.readObject().toASN1Primitive()); |
| _encryptedContent = (ASN1TaggedObjectParser)seq.readObject(); |
| } |
| |
| public ASN1ObjectIdentifier getContentType() |
| { |
| return _contentType; |
| } |
| |
| public AlgorithmIdentifier getContentEncryptionAlgorithm() |
| { |
| return _contentEncryptionAlgorithm; |
| } |
| |
| public ASN1Encodable getEncryptedContent( |
| int tag) |
| throws IOException |
| { |
| return _encryptedContent.getObjectParser(tag, false); |
| } |
| } |