diff options
Diffstat (limited to 'pkix/src/main/java/org/bouncycastle/cms/CMSEnvelopedDataParser.java')
| -rw-r--r-- | pkix/src/main/java/org/bouncycastle/cms/CMSEnvelopedDataParser.java | 208 |
1 files changed, 0 insertions, 208 deletions
diff --git a/pkix/src/main/java/org/bouncycastle/cms/CMSEnvelopedDataParser.java b/pkix/src/main/java/org/bouncycastle/cms/CMSEnvelopedDataParser.java deleted file mode 100644 index 67c9d913..00000000 --- a/pkix/src/main/java/org/bouncycastle/cms/CMSEnvelopedDataParser.java +++ /dev/null @@ -1,208 +0,0 @@ -package org.bouncycastle.cms; - -import java.io.ByteArrayInputStream; -import java.io.IOException; -import java.io.InputStream; - -import org.bouncycastle.asn1.ASN1Encodable; -import org.bouncycastle.asn1.ASN1EncodableVector; -import org.bouncycastle.asn1.ASN1OctetStringParser; -import org.bouncycastle.asn1.ASN1SequenceParser; -import org.bouncycastle.asn1.ASN1Set; -import org.bouncycastle.asn1.ASN1SetParser; -import org.bouncycastle.asn1.BERTags; -import org.bouncycastle.asn1.DERSet; -import org.bouncycastle.asn1.cms.AttributeTable; -import org.bouncycastle.asn1.cms.EncryptedContentInfoParser; -import org.bouncycastle.asn1.cms.EnvelopedDataParser; -import org.bouncycastle.asn1.cms.OriginatorInfo; -import org.bouncycastle.asn1.x509.AlgorithmIdentifier; - -/** - * Parsing class for an CMS Enveloped Data object from an input stream. - * <p> - * Note: that because we are in a streaming mode only one recipient can be tried and it is important - * that the methods on the parser are called in the appropriate order. - * </p> - * <p> - * Example of use - assuming the first recipient matches the private key we have. - * <pre> - * CMSEnvelopedDataParser ep = new CMSEnvelopedDataParser(inputStream); - * - * RecipientInformationStore recipients = ep.getRecipientInfos(); - * - * Collection c = recipients.getRecipients(); - * Iterator it = c.iterator(); - * - * if (it.hasNext()) - * { - * RecipientInformation recipient = (RecipientInformation)it.next(); - * - * CMSTypedStream recData = recipient.getContentStream(new JceKeyTransEnvelopedRecipient(privateKey).setProvider("BC")); - * - * processDataStream(recData.getContentStream()); - * } - * </pre> - * Note: this class does not introduce buffering - if you are processing large files you should create - * the parser with: - * <pre> - * CMSEnvelopedDataParser ep = new CMSEnvelopedDataParser(new BufferedInputStream(inputStream, bufSize)); - * </pre> - * where bufSize is a suitably large buffer size. - */ -public class CMSEnvelopedDataParser - extends CMSContentInfoParser -{ - RecipientInformationStore recipientInfoStore; - EnvelopedDataParser envelopedData; - - private AlgorithmIdentifier encAlg; - private AttributeTable unprotectedAttributes; - private boolean attrNotRead; - private OriginatorInformation originatorInfo; - - public CMSEnvelopedDataParser( - byte[] envelopedData) - throws CMSException, IOException - { - this(new ByteArrayInputStream(envelopedData)); - } - - public CMSEnvelopedDataParser( - InputStream envelopedData) - throws CMSException, IOException - { - super(envelopedData); - - this.attrNotRead = true; - this.envelopedData = new EnvelopedDataParser((ASN1SequenceParser)_contentInfo.getContent(BERTags.SEQUENCE)); - - // TODO Validate version? - //ASN1Integer version = this._envelopedData.getVersion(); - - OriginatorInfo info = this.envelopedData.getOriginatorInfo(); - - if (info != null) - { - this.originatorInfo = new OriginatorInformation(info); - } - - // - // read the recipients - // - ASN1Set recipientInfos = ASN1Set.getInstance(this.envelopedData.getRecipientInfos().toASN1Primitive()); - - // - // read the encrypted content info - // - EncryptedContentInfoParser encInfo = this.envelopedData.getEncryptedContentInfo(); - this.encAlg = encInfo.getContentEncryptionAlgorithm(); - CMSReadable readable = new CMSProcessableInputStream( - ((ASN1OctetStringParser)encInfo.getEncryptedContent(BERTags.OCTET_STRING)).getOctetStream()); - CMSSecureReadable secureReadable = new CMSEnvelopedHelper.CMSEnvelopedSecureReadable( - this.encAlg, readable); - - // - // build the RecipientInformationStore - // - this.recipientInfoStore = CMSEnvelopedHelper.buildRecipientInformationStore( - recipientInfos, this.encAlg, secureReadable); - } - - /** - * return the object identifier for the content encryption algorithm. - */ - public String getEncryptionAlgOID() - { - return encAlg.getAlgorithm().toString(); - } - - /** - * return the ASN.1 encoded encryption algorithm parameters, or null if - * there aren't any. - */ - public byte[] getEncryptionAlgParams() - { - try - { - return encodeObj(encAlg.getParameters()); - } - catch (Exception e) - { - throw new RuntimeException("exception getting encryption parameters " + e); - } - } - - /** - * Return the content encryption algorithm details for the data in this object. - * - * @return AlgorithmIdentifier representing the content encryption algorithm. - */ - public AlgorithmIdentifier getContentEncryptionAlgorithm() - { - return encAlg; - } - - /** - * Return the originator information associated with this message if present. - * - * @return OriginatorInformation, null if not present. - */ - public OriginatorInformation getOriginatorInfo() - { - return originatorInfo; - } - - /** - * return a store of the intended recipients for this message - */ - public RecipientInformationStore getRecipientInfos() - { - return recipientInfoStore; - } - - /** - * return a table of the unprotected attributes indexed by - * the OID of the attribute. - * @exception IOException - */ - public AttributeTable getUnprotectedAttributes() - throws IOException - { - if (unprotectedAttributes == null && attrNotRead) - { - ASN1SetParser set = envelopedData.getUnprotectedAttrs(); - - attrNotRead = false; - - if (set != null) - { - ASN1EncodableVector v = new ASN1EncodableVector(); - ASN1Encodable o; - - while ((o = set.readObject()) != null) - { - ASN1SequenceParser seq = (ASN1SequenceParser)o; - - v.add(seq.toASN1Primitive()); - } - - unprotectedAttributes = new AttributeTable(new DERSet(v)); - } - } - - return unprotectedAttributes; - } - - private byte[] encodeObj( - ASN1Encodable obj) - throws IOException - { - if (obj != null) - { - return obj.toASN1Primitive().getEncoded(); - } - - return null; - } -} |