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76 lines
2.6 KiB
C
76 lines
2.6 KiB
C
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/**
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*
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* <api.h>
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*
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* @version 2.0 (March 2019)
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*
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* Reference ISO-C11 Implementation of the LEDAcrypt KEM-LT cipher using GCC built-ins.
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*
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* In alphabetical order:
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*
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* @author Marco Baldi <m.baldi@univpm.it>
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* @author Alessandro Barenghi <alessandro.barenghi@polimi.it>
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* @author Franco Chiaraluce <f.chiaraluce@univpm.it>
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* @author Gerardo Pelosi <gerardo.pelosi@polimi.it>
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* @author Paolo Santini <p.santini@pm.univpm.it>
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*
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* This code is hereby placed in the public domain.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ''AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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**/
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#pragma once
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#include "qc_ldpc_parameters.h"
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#include "gf2x_limbs.h"
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#include "gf2x_arith_mod_xPplusOne.h"
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#define CRYPTO_ALGNAME "LEDA"
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/* required bytes of input randomness */
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#define CRYPTO_RANDOMBYTES TRNG_BYTE_LENGTH
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/* size in bytes of the secret key */
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#define CRYPTO_SECRETKEYBYTES TRNG_BYTE_LENGTH+1
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/* size in bytes of the public key */
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#define CRYPTO_PUBLICKEYBYTES ((N0-1)*NUM_DIGITS_GF2X_ELEMENT*DIGIT_SIZE_B)
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/* size in bytes of the shared secret */
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#define CRYPTO_BYTES HASH_BYTE_LENGTH
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/*size in bytes of the ciphertext*/
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#define CRYPTO_CIPHERTEXTBYTES (NUM_DIGITS_GF2X_ELEMENT*DIGIT_SIZE_B)
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/* Your functions must return 0 to indicate success, -1 to indicate an error
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* condition */
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/* Generates a keypair - pk is the public key and sk is the secret key. */
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int crypto_kem_keypair( unsigned char *pk,
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unsigned char *sk );
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/* Encrypt - pk is the public key, ct is a key encapsulation message
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(ciphertext), ss is the shared secret.*/
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int crypto_kem_enc( unsigned char *ct,
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unsigned char *ss,
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const unsigned char *pk );
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/* Decrypt - ct is a key encapsulation message (ciphertext), sk is the private
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key, ss is the shared secret */
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int crypto_kem_dec( unsigned char *ss,
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const unsigned char *ct,
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const unsigned char *sk );
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