LB3Help_TCodec

TCodec

• Abstracts away the selection of cipher and chaining mode. All encryption and decryption operations have the same call, irrespective of the choice of cipher or chaining mode.
• Works with both Symetric ciphers and Asymetric ciphers.
• Stores and encapsulates password (symetric ciphers only) strings and the underlying binary keys as applicable to the cipher.
• Facilitates progress bar utilisation for long encrypts/decrypts
• Facilitates user driven abort for long encrypts/decrypts
• Key generation for asymetric ciphers, including progress bar and abort opportunities
• Comes in two flavours: Component (TCodec) or interface pointer (ICodec), depending on your preferred style of programming.
• Collects metrics on encryption/decryption operations
• Automatic and transparent management of IV's for block-mode ciphers (except for ECB mode or so designated). IV's are nonced and the nonce prepended to the input encryption stream.
• Automatic and transparent salting of messages to provide at a miminum of 64 bits of salt. Salting occurs:
  • For stream mode ciphers (except Compressors, Converters or any cipher designated as not needing salting).
  • For block mode ciphers (except when chaining mode is ECB or so designated)
• Block-mode ciphers are adapted to give the TCodec user a simple stream-mode interface. The necessary block quantisation (padding, key-streaming, ciphertext stealing) techniique is intelligently depending on the choice of cipher, chaining mode and message length, to yield optimum security with mimimum overhead.

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