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path: root/pkix/src/main/java/org/bouncycastle/cms/CMSAuthenticatedDataParser.java
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Diffstat (limited to 'pkix/src/main/java/org/bouncycastle/cms/CMSAuthenticatedDataParser.java')
-rw-r--r--pkix/src/main/java/org/bouncycastle/cms/CMSAuthenticatedDataParser.java348
1 files changed, 0 insertions, 348 deletions
diff --git a/pkix/src/main/java/org/bouncycastle/cms/CMSAuthenticatedDataParser.java b/pkix/src/main/java/org/bouncycastle/cms/CMSAuthenticatedDataParser.java
deleted file mode 100644
index 11c90c67..00000000
--- a/pkix/src/main/java/org/bouncycastle/cms/CMSAuthenticatedDataParser.java
+++ /dev/null
@@ -1,348 +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.ASN1OctetString;
-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.AuthenticatedDataParser;
-import org.bouncycastle.asn1.cms.CMSAttributes;
-import org.bouncycastle.asn1.cms.ContentInfoParser;
-import org.bouncycastle.asn1.cms.OriginatorInfo;
-import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
-import org.bouncycastle.operator.DigestCalculatorProvider;
-import org.bouncycastle.operator.OperatorCreationException;
-import org.bouncycastle.util.Arrays;
-
-/**
- * Parsing class for an CMS Authenticated 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>
- * CMSAuthenticatedDataParser ad = new CMSAuthenticatedDataParser(inputStream);
- *
- * RecipientInformationStore recipients = ad.getRecipientInfos();
- *
- * Collection c = recipients.getRecipients();
- * Iterator it = c.iterator();
- *
- * if (it.hasNext())
- * {
- * RecipientInformation recipient = (RecipientInformation)it.next();
- *
- * CMSTypedStream recData = recipient.getContentStream(new JceKeyTransAuthenticatedRecipient(privateKey).setProvider("BC"));
- *
- * processDataStream(recData.getContentStream());
- *
- * if (!Arrays.equals(ad.getMac(), recipient.getMac())
- * {
- * System.err.println("Data corrupted!!!!");
- * }
- * }
- * </pre>
- * Note: this class does not introduce buffering - if you are processing large files you should create
- * the parser with:
- * <pre>
- * CMSAuthenticatedDataParser ep = new CMSAuthenticatedDataParser(new BufferedInputStream(inputStream, bufSize));
- * </pre>
- * where bufSize is a suitably large buffer size.
- */
-public class CMSAuthenticatedDataParser
- extends CMSContentInfoParser
-{
- RecipientInformationStore recipientInfoStore;
- AuthenticatedDataParser authData;
-
- private AlgorithmIdentifier macAlg;
- private byte[] mac;
- private AttributeTable authAttrs;
- private ASN1Set authAttrSet;
- private AttributeTable unauthAttrs;
-
- private boolean authAttrNotRead;
- private boolean unauthAttrNotRead;
- private OriginatorInformation originatorInfo;
-
- public CMSAuthenticatedDataParser(
- byte[] envelopedData)
- throws CMSException, IOException
- {
- this(new ByteArrayInputStream(envelopedData));
- }
-
- public CMSAuthenticatedDataParser(
- byte[] envelopedData,
- DigestCalculatorProvider digestCalculatorProvider)
- throws CMSException, IOException
- {
- this(new ByteArrayInputStream(envelopedData), digestCalculatorProvider);
- }
-
- public CMSAuthenticatedDataParser(
- InputStream envelopedData)
- throws CMSException, IOException
- {
- this(envelopedData, null);
- }
-
- public CMSAuthenticatedDataParser(
- InputStream envelopedData,
- DigestCalculatorProvider digestCalculatorProvider)
- throws CMSException, IOException
- {
- super(envelopedData);
-
- this.authAttrNotRead = true;
- this.authData = new AuthenticatedDataParser((ASN1SequenceParser)_contentInfo.getContent(BERTags.SEQUENCE));
-
- // TODO Validate version?
- //ASN1Integer version = this.authData.getVersion();
-
- OriginatorInfo info = authData.getOriginatorInfo();
-
- if (info != null)
- {
- this.originatorInfo = new OriginatorInformation(info);
- }
- //
- // read the recipients
- //
- ASN1Set recipientInfos = ASN1Set.getInstance(authData.getRecipientInfos().toASN1Primitive());
-
- this.macAlg = authData.getMacAlgorithm();
-
- //
- // build the RecipientInformationStore
- //
- AlgorithmIdentifier digestAlgorithm = authData.getDigestAlgorithm();
-
- if (digestAlgorithm != null)
- {
- if (digestCalculatorProvider == null)
- {
- throw new CMSException("a digest calculator provider is required if authenticated attributes are present");
- }
-
- //
- // read the authenticated content info
- //
- ContentInfoParser data = authData.getEncapsulatedContentInfo();
- CMSReadable readable = new CMSProcessableInputStream(
- ((ASN1OctetStringParser)data.getContent(BERTags.OCTET_STRING)).getOctetStream());
-
- try
- {
- CMSSecureReadable secureReadable = new CMSEnvelopedHelper.CMSDigestAuthenticatedSecureReadable(digestCalculatorProvider.get(digestAlgorithm), readable);
-
- this.recipientInfoStore = CMSEnvelopedHelper.buildRecipientInformationStore(recipientInfos, this.macAlg, secureReadable, new AuthAttributesProvider()
- {
- public ASN1Set getAuthAttributes()
- {
- try
- {
- return getAuthAttrSet();
- }
- catch (IOException e)
- {
- throw new IllegalStateException("can't parse authenticated attributes!");
- }
- }
- });
- }
- catch (OperatorCreationException e)
- {
- throw new CMSException("unable to create digest calculator: " + e.getMessage(), e);
- }
- }
- else
- {
- //
- // read the authenticated content info
- //
- ContentInfoParser data = authData.getEncapsulatedContentInfo();
- CMSReadable readable = new CMSProcessableInputStream(
- ((ASN1OctetStringParser)data.getContent(BERTags.OCTET_STRING)).getOctetStream());
-
- CMSSecureReadable secureReadable = new CMSEnvelopedHelper.CMSAuthenticatedSecureReadable(this.macAlg, readable);
-
- this.recipientInfoStore = CMSEnvelopedHelper.buildRecipientInformationStore(recipientInfos, this.macAlg, secureReadable);
- }
-
-
- }
-
- /**
- * Return the originator information associated with this message if present.
- *
- * @return OriginatorInformation, null if not present.
- */
- public OriginatorInformation getOriginatorInfo()
- {
- return originatorInfo;
- }
-
- /**
- * Return the MAC algorithm details for the MAC associated with the data in this object.
- *
- * @return AlgorithmIdentifier representing the MAC algorithm.
- */
- public AlgorithmIdentifier getMacAlgorithm()
- {
- return macAlg;
- }
-
- /**
- * return the object identifier for the mac algorithm.
- */
- public String getMacAlgOID()
- {
- return macAlg.getAlgorithm().toString();
- }
-
- /**
- * return the ASN.1 encoded encryption algorithm parameters, or null if
- * there aren't any.
- */
- public byte[] getMacAlgParams()
- {
- try
- {
- return encodeObj(macAlg.getParameters());
- }
- catch (Exception e)
- {
- throw new RuntimeException("exception getting encryption parameters " + e);
- }
- }
-
- /**
- * return a store of the intended recipients for this message
- */
- public RecipientInformationStore getRecipientInfos()
- {
- return recipientInfoStore;
- }
-
- public byte[] getMac()
- throws IOException
- {
- if (mac == null)
- {
- getAuthAttrs();
- mac = authData.getMac().getOctets();
- }
- return Arrays.clone(mac);
- }
-
- private ASN1Set getAuthAttrSet()
- throws IOException
- {
- if (authAttrs == null && authAttrNotRead)
- {
- ASN1SetParser set = authData.getAuthAttrs();
-
- if (set != null)
- {
- authAttrSet = (ASN1Set)set.toASN1Primitive();
- }
-
- authAttrNotRead = false;
- }
-
- return authAttrSet;
- }
-
- /**
- * return a table of the unauthenticated attributes indexed by
- * the OID of the attribute.
- * @exception java.io.IOException
- */
- public AttributeTable getAuthAttrs()
- throws IOException
- {
- if (authAttrs == null && authAttrNotRead)
- {
- ASN1Set set = getAuthAttrSet();
-
- if (set != null)
- {
- authAttrs = new AttributeTable(set);
- }
- }
-
- return authAttrs;
- }
-
- /**
- * return a table of the unauthenticated attributes indexed by
- * the OID of the attribute.
- * @exception java.io.IOException
- */
- public AttributeTable getUnauthAttrs()
- throws IOException
- {
- if (unauthAttrs == null && unauthAttrNotRead)
- {
- ASN1SetParser set = authData.getUnauthAttrs();
-
- unauthAttrNotRead = false;
-
- if (set != null)
- {
- ASN1EncodableVector v = new ASN1EncodableVector();
- ASN1Encodable o;
-
- while ((o = set.readObject()) != null)
- {
- ASN1SequenceParser seq = (ASN1SequenceParser)o;
-
- v.add(seq.toASN1Primitive());
- }
-
- unauthAttrs = new AttributeTable(new DERSet(v));
- }
- }
-
- return unauthAttrs;
- }
-
- private byte[] encodeObj(
- ASN1Encodable obj)
- throws IOException
- {
- if (obj != null)
- {
- return obj.toASN1Primitive().getEncoded();
- }
-
- return null;
- }
-
- /**
- * This will only be valid after the content has been read.
- *
- * @return the contents of the messageDigest attribute, if available. Null if not present.
- */
- public byte[] getContentDigest()
- {
- if (authAttrs != null)
- {
- return ASN1OctetString.getInstance(authAttrs.get(CMSAttributes.messageDigest).getAttrValues().getObjectAt(0)).getOctets();
- }
-
- return null;
- }
-}
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