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213 lines
7.1 KiB
C
213 lines
7.1 KiB
C
/* ed25519.h
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*
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* Copyright (C) 2006-2021 wolfSSL Inc.
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*
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* This file is part of wolfSSL.
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*
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* wolfSSL is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* wolfSSL is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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*/
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/*!
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\file wolfssl/wolfcrypt/ed25519.h
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*/
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#ifndef WOLF_CRYPT_ED25519_H
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#define WOLF_CRYPT_ED25519_H
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#include <libwolfssl/wolfcrypt/types.h>
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#ifdef HAVE_ED25519
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#include <libwolfssl/wolfcrypt/fe_operations.h>
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#include <libwolfssl/wolfcrypt/ge_operations.h>
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#include <libwolfssl/wolfcrypt/random.h>
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#ifndef WOLFSSL_SHA512
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#error ED25519 requires SHA512
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#endif
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#include <libwolfssl/wolfcrypt/sha512.h>
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#ifdef WOLFSSL_ASYNC_CRYPT
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#include <libwolfssl/wolfcrypt/async.h>
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* info about EdDSA curve specifically ed25519, defined as an elliptic curve
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over GF(p) */
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/*
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32, key size
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"ED25519", curve name
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"2^255-19", prime number
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"SHA512", hash function
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"-121665/121666", value of d
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*/
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#define ED25519_KEY_SIZE 32 /* private key only */
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#define ED25519_SIG_SIZE 64
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#define ED25519_PUB_KEY_SIZE 32 /* compressed */
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/* both private and public key */
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#define ED25519_PRV_KEY_SIZE (ED25519_PUB_KEY_SIZE+ED25519_KEY_SIZE)
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enum {
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Ed25519 = -1,
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Ed25519ctx = 0,
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Ed25519ph = 1,
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};
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#ifndef WC_ED25519KEY_TYPE_DEFINED
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typedef struct ed25519_key ed25519_key;
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#define WC_ED25519KEY_TYPE_DEFINED
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#endif
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/* An ED25519 Key */
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struct ed25519_key {
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byte p[ED25519_PUB_KEY_SIZE]; /* compressed public key */
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byte k[ED25519_PRV_KEY_SIZE]; /* private key : 32 secret -- 32 public */
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#ifdef FREESCALE_LTC_ECC
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/* uncompressed point coordinates */
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byte pointX[ED25519_KEY_SIZE]; /* recovered X coordinate */
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byte pointY[ED25519_KEY_SIZE]; /* Y coordinate is the public key with The most significant bit of the final octet always zero. */
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#endif
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word16 pubKeySet:1;
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#ifdef WOLFSSL_ASYNC_CRYPT
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WC_ASYNC_DEV asyncDev;
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#endif
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#if defined(WOLF_CRYPTO_CB)
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int devId;
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#endif
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void *heap;
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#ifdef WOLFSSL_ED25519_PERSISTENT_SHA
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wc_Sha512 sha;
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int sha_clean_flag;
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#endif
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};
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WOLFSSL_API
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int wc_ed25519_make_public(ed25519_key* key, unsigned char* pubKey,
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word32 pubKeySz);
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WOLFSSL_API
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int wc_ed25519_make_key(WC_RNG* rng, int keysize, ed25519_key* key);
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#ifdef HAVE_ED25519_SIGN
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WOLFSSL_API
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int wc_ed25519_sign_msg(const byte* in, word32 inLen, byte* out,
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word32 *outLen, ed25519_key* key);
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WOLFSSL_API
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int wc_ed25519ctx_sign_msg(const byte* in, word32 inLen, byte* out,
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word32 *outLen, ed25519_key* key,
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const byte* context, byte contextLen);
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WOLFSSL_API
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int wc_ed25519ph_sign_hash(const byte* hash, word32 hashLen, byte* out,
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word32 *outLen, ed25519_key* key,
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const byte* context, byte contextLen);
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WOLFSSL_API
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int wc_ed25519ph_sign_msg(const byte* in, word32 inLen, byte* out,
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word32 *outLen, ed25519_key* key, const byte* context,
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byte contextLen);
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WOLFSSL_API
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int wc_ed25519_sign_msg_ex(const byte* in, word32 inLen, byte* out,
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word32 *outLen, ed25519_key* key, byte type,
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const byte* context, byte contextLen);
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#endif /* HAVE_ED25519_SIGN */
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#ifdef HAVE_ED25519_VERIFY
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WOLFSSL_API
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int wc_ed25519_verify_msg(const byte* sig, word32 sigLen, const byte* msg,
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word32 msgLen, int* stat, ed25519_key* key);
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WOLFSSL_API
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int wc_ed25519ctx_verify_msg(const byte* sig, word32 sigLen, const byte* msg,
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word32 msgLen, int* stat, ed25519_key* key,
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const byte* context, byte contextLen);
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WOLFSSL_API
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int wc_ed25519ph_verify_hash(const byte* sig, word32 sigLen, const byte* hash,
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word32 hashLen, int* stat, ed25519_key* key,
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const byte* context, byte contextLen);
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WOLFSSL_API
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int wc_ed25519ph_verify_msg(const byte* sig, word32 sigLen, const byte* msg,
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word32 msgLen, int* stat, ed25519_key* key,
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const byte* context, byte contextLen);
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WOLFSSL_API
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int wc_ed25519_verify_msg_ex(const byte* sig, word32 sigLen, const byte* msg,
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word32 msgLen, int* res, ed25519_key* key,
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byte type, const byte* context, byte contextLen);
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#ifdef WOLFSSL_ED25519_STREAMING_VERIFY
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WOLFSSL_API
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int wc_ed25519_verify_msg_init(const byte* sig, word32 sigLen, ed25519_key* key,
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byte type, const byte* context, byte contextLen);
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WOLFSSL_API
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int wc_ed25519_verify_msg_update(const byte* msgSegment, word32 msgSegmentLen,
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ed25519_key* key);
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WOLFSSL_API
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int wc_ed25519_verify_msg_final(const byte* sig, word32 sigLen, int* res,
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ed25519_key* key);
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#endif /* WOLFSSL_ED25519_STREAMING_VERIFY */
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#endif /* HAVE_ED25519_VERIFY */
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WOLFSSL_API
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int wc_ed25519_init(ed25519_key* key);
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WOLFSSL_API
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int wc_ed25519_init_ex(ed25519_key* key, void* heap, int devId);
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WOLFSSL_API
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void wc_ed25519_free(ed25519_key* key);
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#ifdef HAVE_ED25519_KEY_IMPORT
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WOLFSSL_API
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int wc_ed25519_import_public(const byte* in, word32 inLen, ed25519_key* key);
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WOLFSSL_API
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int wc_ed25519_import_private_only(const byte* priv, word32 privSz,
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ed25519_key* key);
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WOLFSSL_API
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int wc_ed25519_import_private_key(const byte* priv, word32 privSz,
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const byte* pub, word32 pubSz, ed25519_key* key);
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#endif /* HAVE_ED25519_KEY_IMPORT */
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#ifdef HAVE_ED25519_KEY_EXPORT
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WOLFSSL_API
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int wc_ed25519_export_public(ed25519_key*, byte* out, word32* outLen);
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WOLFSSL_API
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int wc_ed25519_export_private_only(ed25519_key* key, byte* out, word32* outLen);
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WOLFSSL_API
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int wc_ed25519_export_private(ed25519_key* key, byte* out, word32* outLen);
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WOLFSSL_API
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int wc_ed25519_export_key(ed25519_key* key,
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byte* priv, word32 *privSz,
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byte* pub, word32 *pubSz);
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#endif /* HAVE_ED25519_KEY_EXPORT */
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WOLFSSL_API
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int wc_ed25519_check_key(ed25519_key* key);
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/* size helper */
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WOLFSSL_API
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int wc_ed25519_size(ed25519_key* key);
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WOLFSSL_API
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int wc_ed25519_priv_size(ed25519_key* key);
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WOLFSSL_API
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int wc_ed25519_pub_size(ed25519_key* key);
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WOLFSSL_API
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int wc_ed25519_sig_size(ed25519_key* key);
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* HAVE_ED25519 */
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#endif /* WOLF_CRYPT_ED25519_H */
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