/* IBM_PROLOG_BEGIN_TAG                                                   */
/* This is an automatically generated prolog.                             */
/*                                                                        */
/* $Source: src/include/securerom/ecverify.H $                            */
/*                                                                        */
/* OpenPOWER HostBoot Project                                             */
/*                                                                        */
/* Contributors Listed Below - COPYRIGHT 2016,2017                        */
/* [+] International Business Machines Corp.                              */
/*                                                                        */
/*                                                                        */
/* Licensed under the Apache License, Version 2.0 (the "License");        */
/* you may not use this file except in compliance with the License.       */
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/*     http://www.apache.org/licenses/LICENSE-2.0                         */
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/* distributed under the License is distributed on an "AS IS" BASIS,      */
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/* IBM_PROLOG_END_TAG                                                     */

#if !defined(__ECVERIFY_H__)
#define   __ECVERIFY_H__

// ECDSA verification on fixed curve

#define EC_HASHBYTES   64     /* SHA-256 */
#define EC_COORDBYTES  66     /* P-521   */

typedef uint8_t ecc_key_t[2*EC_COORDBYTES];
typedef uint8_t ecc_signature_t[2*EC_COORDBYTES];

/** Returns positive if signature verified
 *          zero     if parameters are valid but signature verification fails
 *          negative if parameters (such as point) are invalid
 */
extern "C"
int ec_verify (const uint8_t *publicpt,     /* 2*EC_COORDBYTES */
               const uint8_t *hash,         /*   EC_HASHBYTES  */
               const uint8_t *signature) ;  /* 2*EC_COORDBYTES */

#endif    /* defined(__ECVERIFY_H__) */