BIKE def.h

/******************************************************************************

• BIKE -- Bit Flipping Key Encapsulation
• Copyright (c) 2021 Nir Drucker, Shay Gueron, Rafael Misoczki, Tobias Oder,
• Tim Gueneysu, Jan Richter-Brockmann.
• Contact: drucker.nir@gmail.com, shay.gueron@gmail.com,
• rafaelmisoczki@google.com, tobias.oder@rub.de, tim.gueneysu@rub.de,
• jan.richter-brockmann@rub.de.
• Permission to use this code for BIKE is granted.
• Redistribution and use in source and binary forms, with or without
• modification, are permitted provided that the following conditions are met:
• • Redistributions of source code must retain the above copyright notice,
• this list of conditions and the following disclaimer.
• • Redistributions in binary form must reproduce the above copyright
• notice, this list of conditions and the following disclaimer in the
• documentation and/or other materials provided with the distribution.
• • The names of the contributors may not be used to endorse or promote
• products derived from this software without specific prior written
• permission.
• THIS SOFTWARE IS PROVIDED BY THE AUTHORS ""AS IS"" AND ANY
• EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
• IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
• PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS CORPORATION OR
• CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
• EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
• PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
• PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
• LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
• NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
• SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  ******************************************************************************/

ifndef DEFS_H_INCLUDED

define DEFS_H_INCLUDED

////////////////////////////////////////////
// BIKE main parameters
///////////////////////////////////////////

// UNCOMMENT TO SELECT THE NIST SECURITY LEVEL 1, 3 OR 5:

define PARAM64 // NIST LEVEL 1

//#define PARAM96 // NIST LEVEL 3
// #define PARAM128 // NIST LEVEL 5

// UNCOMMENT TO ENABLE BANDWIDTH OPTIMISATION FOR BIKE-3:
//#define BANDWIDTH_OPTIMIZED

// BIKE shared-secret size:

define ELL_BITS 256ULL

define ELL_SIZE (ELL_BITS/8)

////////////////////////////////////////////
// Implicit Parameters (do NOT edit below)
///////////////////////////////////////////

// select the max between a and b:

define MAX(a,b) ((a)>(b))?(a):(b)

// LEVEL-5 Security parameters:

ifdef PARAM128

define R_BITS 40973ULL

define DV 137ULL

define T1 264ULL

define VAR_TH_FCT(x) (MAX(17.8785 + 0.00402312 * (x), 69))

// Parameters for BGF Decoder:

define tau 3

define NbIter 5

// LEVEL-3 Security parameters:

elif defined(PARAM96)

define R_BITS 24659ULL

define DV 103ULL

define T1 199ULL

define VAR_TH_FCT(x) (MAX(15.2588 + 0.005265 * (x), 52))

// Parameters for BGF Decoder:

define tau 3

define NbIter 5

// LEVEL-1 security parameters:

elif defined(PARAM64)

define R_BITS 11003ULL

define DV 67LL

define T1 135ULL

define VAR_TH_FCT(x) (MAX(13.530 + 0.0069722 * (x), 36))

// Parameters for BGF Decoder:

define tau 3

define NbIter 5

endif

// Divide by the divider and round up to next integer:

define DIVIDE_AND_CEIL(x, divider) ((x/divider) + (x % divider == 0 ? 0 : 1ULL))

// Round the size to the nearest byte.
// SIZE suffix, is the number of bytes (uint8_t).

define N_BITS (R_BITS*2)

define R_SIZE DIVIDE_AND_CEIL(R_BITS, 8ULL)

define N_SIZE DIVIDE_AND_CEIL(N_BITS, 8ULL)

define R_DQWORDS DIVIDE_AND_CEIL(R_SIZE, 16ULL)

////////////////////////////////////////////
// Debug
///////////////////////////////////////////

ifndef VERBOSE

define VERBOSE 0

endif

if (VERBOSE == 3)

define MSG(...) { printf(VA_ARGS); }

define DMSG(...) MSG(VA_ARGS)

define EDMSG(...) MSG(VA_ARGS)

define SEDMSG(...) MSG(VA_ARGS)

elif (VERBOSE == 2)

define MSG(...) { printf(VA_ARGS); }

define DMSG(...) MSG(VA_ARGS)

define EDMSG(...) MSG(VA_ARGS)

define SEDMSG(...)

elif (VERBOSE == 1)

define MSG(...) { printf(VA_ARGS); }

define DMSG(...) MSG(VA_ARGS)

define EDMSG(...)

define SEDMSG(...)

else

define MSG(...) { printf(VA_ARGS); }

define DMSG(...)

define EDMSG(...)

define SEDMSG(...)

endif

////////////////////////////////////////////
// Printing
///////////////////////////////////////////

// Show timer results in cycles.

define RDTSC

//#define PRINT_IN_BE
//#define NO_SPACE
//#define NO_NEWLINE

////////////////////////////////////////////
// Testing
///////////////////////////////////////////

define NUM_OF_CODE_TESTS 100ULL

define NUM_OF_ENCRYPTION_TESTS 100ULL

endif //TYPES_H_INCLUDED