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Reference implementation
========================
This folder contains the reference implementation for Lilliput-AE.
It is organized as follows:
`src`
-----
Contains two kinds of subfolders:
- implementations: parameter-independent code
- `ref`: the reference implementation
- `add_*`: additional implementations
- parameters: one folder for each variant of the Lilliput-AE family,
named `${mode}-${keybits}`:
- mode is either i (for ΘCB3) or ii (for SCT-2)
- keybits is either 128, 192 or 256
Each implementation folder contains:
- `lilliput-ae.h`: main API
- `lilliput-ae-i.c`: implementation of Lilliput-Ⅰ (ΘCB3-based)
- `lilliput-ae-ii.c`: implementation of Lilliput-Ⅱ (SCT-2-based)
- `ae-common.h`: internal helper functions used by both AE schemes
- `tweakey.*`: implementation of Lilliput-TBC's tweakey schedule
- `cipher.*`: implementation of the tweakable block-cipher
Lilliput-TBC
- `constants.h`: byte sizes for inputs and outputs (depends on
parameter-dependent `parameters.h` files)
`test`
------
Contains test vectors. There is one subfolder per member of the
Lilliput-AE family, as well as:
- `common.mk`: makefile recipes for test programs
- `debug.h`: helper functions to dump intermediate values, used in
the trace-generating patches
- `test-helpers.h`: helper functions for test code
`nist`
------
Contains code to
- generate the directory structure required by NIST
- compile each member of the Lilliput-AE family against NIST's
`genkat_aead.c`
- generate test vectors
- package code and test vectors together into `results/crypto_aead`
The code can be run with `make nist`.
`traces`
--------
Contains patches to add print statements for inputs, outputs and
intermediate values. `make traces` will
- apply the patches
- run the trace programs
- collect traces
- revert the patches
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