Package org.bouncycastle.tsp.ers

package org.bouncycastle.tsp.ers
RFC 4998 Evidence Record Syntax (ERS) over RFC 3161 timestamps. Provides generators and verifiers for archive timestamps, archive-timestamp chains, and the Merkle-tree data-group construction used to bind multiple data objects under a single timestamp.
  • Class
    Description
    ArchiveTimeStampValidationException
    Exception thrown when validation of an RFC 4998 ArchiveTimeStamp fails - for example when the expected data hash is not present in the reduced hash tree, or the recovered root hash does not match the time-stamp imprint.
    BinaryTreeRootCalculator
    Calculator based on the use of a left weighted binary Merkle tree created on top of the partial hash tree objects provided.
    ERSArchiveTimeStamp
    Carrier for an RFC 4998 ArchiveTimeStamp - an RFC 3161 time-stamp token together with the reduced hash tree (a sequence of PartialHashtrees) that binds a particular data object or data group to the time-stamped root hash.
    ERSArchiveTimeStampGenerator
    Generator for RFC 4998 ArchiveTimeStamps.
    ERSByteData
    Generic class for holding byte[] data for RFC 4998 ERS.
    ERSCachingData
    Base ERSData implementation that caches calculated hashes, keyed by digest algorithm and previous-chain hash, so the (potentially expensive) hash of a data object is computed only once per combination.
    ERSData
    General interface for a data object covered by an RFC 4998 Evidence Record - anything (a byte array, file, stream, or ERSDataGroup) that can produce the hash used as a leaf in the archive time-stamp's hash tree.
    ERSDataGroup
    Representation of data groups with more than 1 members according to the description provided in RFC4998.
    ERSDirectoryDataGroup
    Representation of a data group based on a directory.
    ERSEvidenceRecord
    Carrier for an RFC 4998 EvidenceRecord - the ArchiveTimeStampSequence of ArchiveTimeStampChains that provides long-term, renewable proof of existence for one or more data objects.
    ERSEvidenceRecordGenerator
    Generator for RFC 4998 Evidence Records.
    ERSEvidenceRecordSelector
    Selector matching the ERSEvidenceRecords that contain, and validate the presence of, a given data object/group at a particular date.
    ERSEvidenceRecordStore
    A Store of ERSEvidenceRecords indexed by the data-object hashes found in the leaf (first) PartialHashtree of each record's initial ArchiveTimeStamp.
    ERSException
    Base exception for errors in the RFC 4998 Evidence Record Syntax (ERS) layer.
    ERSFileData
    Generic class for holding a File of data for RFC 4998 ERS.
    ERSInputStreamData
    Generic class for processing an InputStream (or File) of data for RFC 4998 ERS.
    ERSRootNodeCalculator
    Base interface for an implementation that calculates the root hash contained in the time-stamp from the Merkle tree based on the partial hash-tree nodes.
    PartialHashTreeVerificationException
    Exception thrown when verification of an RFC 4998 PartialHashtree fails.
    SortedHashList
    A sorting list - byte[] are sorted in ascending order.
    SortedIndexedHashList
    A sorting list - byte[] are sorted in ascending order.