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TimeCrypt Crypto Primitives

The implementation of the TimeCrypt cryptographic primitives consists of several aspects:

  • The implementation of the pseudorandom function (PRF) that is used for the key regression trees. The speed of the PRF is an relevant aspect the overall Speed of TimeCrypt therefore there are additional Implementations using OpenSSL or the native AES-NI CPU instruction. See the ch.ethz.dsg.timecrypt.crypto.prf package for details. TimeCrypt PRFs have to comply with the IPRF interface.
  • The key regression itself is present in different versions in the ch.ethz.dsg.timecrypt.crypto.keyRegression package. Implementations of the key regression have to comply the IKeyRegression interface.
  • The encryption and handling of the encrypted data in the package ch.ethz.dsg.timecrypt.crypto.encryption. This includes the encryption of the raw data chunks as well as the encryption of the additive meta data that is stored in the digests.