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external/nrf_cc310/include/crys_ec_edw_api.h
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external/nrf_cc310/include/crys_ec_edw_api.h
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/**************************************************************************************
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* Copyright (c) 2016-2017, ARM Limited or its affiliates. All rights reserved *
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* *
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* This file and the related binary are licensed under the following license: *
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* *
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* ARM Object Code and Header Files License, v1.0 Redistribution. *
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* *
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* Redistribution and use of object code, header files, and documentation, without *
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* modification, are permitted provided that the following conditions are met: *
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* *
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* 1) Redistributions must reproduce the above copyright notice and the *
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* following disclaimer in the documentation and/or other materials *
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* provided with the distribution. *
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* *
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* 2) Unless to the extent explicitly permitted by law, no reverse *
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* engineering, decompilation, or disassembly of is permitted. *
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* *
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* 3) Redistribution and use is permitted solely for the purpose of *
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* developing or executing applications that are targeted for use *
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* on an ARM-based product. *
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* *
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* DISCLAIMER. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND *
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* CONTRIBUTORS "AS IS." ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT *
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* NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, NON-INFRINGEMENT, *
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE *
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* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, *
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED *
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR *
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF *
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING *
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS *
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
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**************************************************************************************/
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#ifndef CRYS_EC_EDW_API_H
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#define CRYS_EC_EDW_API_H
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#include "ssi_pal_types.h"
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#include "crys_hash.h"
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#include "crys_rnd.h"
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#include "crys_pka_defs_hw.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*!
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@defgroup cryptocell_ec CryptoCell EC 25519 curve APIs
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@{
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@ingroup cryptocell_api
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@brief This group is the cryptocell EC 25519 curve root group
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@}
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@file
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@brief This file contains the CRYS APIs used for EC EDW (Edwards) ed25519 algorithms.
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@defgroup crys_ec_edw CryptoCell EC Edwards APIs
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@{
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@ingroup cryptocell_ec
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\note Algorithms of Montgomery and Edwards elliptic curves cryptography were developed by
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Daniel.J.Bernstein.
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*/
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/*! EC Edwards ed25519 modulus and order sizes in bits, words and bytes. */
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/*! EC Edwards modulus size in bits. */
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#define CRYS_ECEDW_MOD_SIZE_IN_BITS 255U /*!<\internal MOD - EC Edw modulus size*/
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/*! EC Edwards order size in bits. */
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#define CRYS_ECEDW_ORD_SIZE_IN_BITS 255U /*!<\internal ORD - EC Edw generator order size*/
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/*! EC Edwards nodulus size in words. */
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#define CRYS_ECEDW_MOD_SIZE_IN_32BIT_WORDS ((CRYS_ECEDW_MOD_SIZE_IN_BITS + SASI_BITS_IN_32BIT_WORD - 1) / SASI_BITS_IN_32BIT_WORD)
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/*! EC Edwards modulus size in bytes. */
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#define CRYS_ECEDW_MOD_SIZE_IN_BYTES (CRYS_ECEDW_MOD_SIZE_IN_32BIT_WORDS * SASI_32BIT_WORD_SIZE)
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/*! EC Edwards order size in words. */
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#define CRYS_ECEDW_ORD_SIZE_IN_32BIT_WORDS ((CRYS_ECEDW_ORD_SIZE_IN_BITS + SASI_BITS_IN_32BIT_WORD - 1) / SASI_BITS_IN_32BIT_WORD)
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/*! EC Edwards order size in bytes. */
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#define CRYS_ECEDW_ORD_SIZE_IN_BYTES (CRYS_ECEDW_ORD_SIZE_IN_32BIT_WORDS * SASI_32BIT_WORD_SIZE)
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/*! Constant sizes of special EC_MONT buffers and arrays */
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/*! EC Edwards seed size in bytes. */
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#define CRYS_ECEDW_SEED_BYTES CRYS_ECEDW_MOD_SIZE_IN_BYTES
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/*! EC Edwards secret key size in bytes. */
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#define CRYS_ECEDW_SECRET_KEY_BYTES (2 * CRYS_ECEDW_MOD_SIZE_IN_BYTES)
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/*! EC Edwards signatue size in bytes. */
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#define CRYS_ECEDW_SIGNATURE_BYTES (2 * CRYS_ECEDW_ORD_SIZE_IN_BYTES)
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/*! EC Edwards scalar size in bytes. */
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#define CRYS_ECEDW_SCALAR_BYTES CRYS_ECEDW_ORD_SIZE_IN_BYTES
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/*! EC Edwards scalar multiplication size in bytes. */
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#define CRYS_ECEDW_SCALARMULT_BYTES CRYS_ECEDW_MOD_SIZE_IN_BYTES
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/*! EC_EDW temp buffer size definition. */
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#define CRYS_ECEDW_TEMP_BUFF_SIZE_IN_32BIT_WORD (10*CRYS_EC_MONT_EDW_MODULUS_MAX_SIZE_IN_WORDS + (sizeof(CRYS_HASHUserContext_t)+SASI_32BIT_WORD_SIZE-1)/SASI_32BIT_WORD_SIZE)
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/*! EC_EDW temp buffer type definition. */
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typedef struct {
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/*! Internal buffer. */
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uint32_t buff[CRYS_ECEDW_TEMP_BUFF_SIZE_IN_32BIT_WORD];
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} CRYS_ECEDW_TempBuff_t;
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/******************************************************************************/
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/*!
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@brief The function creates EC Edwards signature on the message.
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\note Used detached form of signature, separated from the message.
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Implemented algorithm of Bernstein D. etc. sign ed25519.
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@return CRYS_OK on success,
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@return A non-zero value on failure as defined crys_ec_mont_edw_error.h or crys_hash_error.h.
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*/
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CIMPORT_C CRYSError_t CRYS_ECEDW_Sign (
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uint8_t *pSign, /*!< [out] Pointer to the detached signature. */
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size_t *pSignSize, /*!< [in/out] Pointer to the total size of the signature ;
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In - the buffer size, which (must be at least 2*EC order size);
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Out - the actual size of output data. */
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const uint8_t *pMsg, /*!< [in] Pointer to the message. */
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size_t msgSize, /*!< [in] Message size in bytes: must be less, than
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(CRYS_HASH_UPDATE_DATA_MAX_SIZE_IN_BYTES - 2*(EC_EDW modulus size)). */
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const uint8_t *pSignSecrKey, /*!< [in] Pointer to the signer secret key (seed || pulKey) */
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size_t secrKeySize, /*!< [in] Size of signer secret key in bytes: (must be 2*EC order size). */
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CRYS_ECEDW_TempBuff_t *pTempBuff /*!< [in] Pointer to the temp buffer. */);
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/******************************************************************************/
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/*!
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@brief The function verifies the EC Edwards ed25519 signature on the message.
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\note The input signature is in detached form, i.e. separated from the message.
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@return CRYS_OK on success,
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@return A non-zero value on failure as defined crys_ec_mont_edw_error.h or crys_hash_error.h.
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*/
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CIMPORT_C CRYSError_t CRYS_ECEDW_Verify(
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const uint8_t *pSign, /*!< [in] Pointer to detached signature, i.e. the
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signature is separated from the message. */
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size_t signSize, /*!< [in] Size of the signature in bytes, it must be
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equal to two EC Order size in bytes. */
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const uint8_t *pSignPublKey, /*!< [in] Pointer to signer public key. */
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size_t publKeySize, /*!< [in] Size of the signer public key in bytes; must be
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equal to EC modulus size. */
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uint8_t *pMsg, /*!< [in] Pointer to the message. */
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size_t msgSize, /*!< [in] Pointer to the message size in bytes. Must be less than
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(CRYS_HASH_UPDATE_DATA_MAX_SIZE_IN_BYTES - 2*(EC_EDW modulus size)). */
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CRYS_ECEDW_TempBuff_t *pTempBuff /*!< [in] Pointer to the temp buffer, for internal use. */);
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/******************************************************************************/
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/*!
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@brief The function randomly generates Ec ed25519 private and public keys
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using given seed.
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The generation is performed using EC Edwards ed25519 algorithm.
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@return CRYS_OK on success,
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@return A non-zero value on failure as defined crys_ec_mont_edw_error.h or crys_hash_error.h.
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*/
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CIMPORT_C CRYSError_t CRYS_ECEDW_SeedKeyPair (
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const uint8_t *pSeed, /*!< [in] Pointer to the given seed. */
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size_t seedSize, /*!< [in] Size of the seed in bytes, must be equal the EC order size
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in bytes. */
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uint8_t *pSecrKey, /*!< [out] Pointer to the secret key, including the seed, concatenated
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with the public key. */
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size_t *pSecrKeySize, /*!< [in/out] Pointer to the size of the secret key buffer in bytes
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(must be at least 2*EC order size). */
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uint8_t *pPublKey, /*!< [out] Pointer to the public key. */
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size_t *pPublKeySize, /*!< [in/out] Pointer to the size of the public key in bytes.
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In - the size of buffer must be at least EC modulus size;
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Out - the actual size. */
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CRYS_ECEDW_TempBuff_t *pTempBuff /*!< [in] Pointer to the temp buffer, for internal use. */);
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/*******************************************************************/
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/*!
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@brief The function randomly generates the EC Edwards ed25519 private and
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public keys.
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The generation is performed using EC Edwards ed25519 algorithm.
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@return CRYS_OK on success,
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@return A non-zero value on failure as defined crys_ec_mont_edw_error.h, crys_hash_error.h or crys_rnd_error.
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*/
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CIMPORT_C CRYSError_t CRYS_ECEDW_KeyPair (
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uint8_t *pSecrKey, /*!< [out] Pointer to the secret key (including seed and public key). */
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size_t *pSecrKeySize, /*!< [in/out] Pointer to the size of the secret key in bytes,
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(must be at least 2*EC order size). */
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uint8_t *pPublKey, /*!< [out] Pointer to the public key. */
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size_t *pPublKeySize, /*!< [in/out] - Pointer to the size of the public key in bytes.
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In - the size of buffer must be at least EC modulus size;
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Out - the actual size. */
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void *pRndState, /*!< [in/out] Pointer to the RND state structure. */
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SaSiRndGenerateVectWorkFunc_t rndGenerateVectFunc, /*!< [in] Pointer to the random vector generation function. */
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CRYS_ECEDW_TempBuff_t *pTempBuff /*!< [in] Pointer to the temp buffer. */);
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#ifdef __cplusplus
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}
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#endif
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/**
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@}
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*/
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#endif
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