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WiiFlow_Lite/source/libwolfssl/wolfcrypt/ecc.h

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/* ecc.h
*
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* Copyright (C) 2006-2020 wolfSSL Inc.
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*
* This file is part of wolfSSL.
*
* wolfSSL is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* wolfSSL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
*/
/*!
\file wolfssl/wolfcrypt/ecc.h
*/
#ifndef WOLF_CRYPT_ECC_H
#define WOLF_CRYPT_ECC_H
#include <libwolfssl/wolfcrypt/types.h>
#ifdef HAVE_ECC
#if defined(HAVE_FIPS) && \
defined(HAVE_FIPS_VERSION) && (HAVE_FIPS_VERSION >= 2)
#include <libwolfssl/wolfcrypt/fips.h>
#endif /* HAVE_FIPS_VERSION >= 2 */
#include <libwolfssl/wolfcrypt/integer.h>
#include <libwolfssl/wolfcrypt/random.h>
#ifdef HAVE_X963_KDF
#include <libwolfssl/wolfcrypt/hash.h>
#endif
#ifdef WOLFSSL_ASYNC_CRYPT
#include <libwolfssl/wolfcrypt/async.h>
#ifdef WOLFSSL_CERT_GEN
#include <libwolfssl/wolfcrypt/asn.h>
#endif
#endif
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#if defined(WOLFSSL_ATECC508A) || defined(WOLFSSL_ATECC608A)
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#include <libwolfssl/wolfcrypt/port/atmel/atmel.h>
#endif /* WOLFSSL_ATECC508A */
#if defined(WOLFSSL_CRYPTOCELL)
#include <libwolfssl/wolfcrypt/port/arm/cryptoCell.h>
#endif
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#ifdef WOLFSSL_HAVE_SP_ECC
#include <libwolfssl/wolfcrypt/sp_int.h>
#endif
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#ifdef __cplusplus
extern "C" {
#endif
/* Enable curve B parameter if needed */
#if defined(HAVE_COMP_KEY) || defined(ECC_CACHE_CURVE)
#ifndef USE_ECC_B_PARAM /* Allow someone to force enable */
#define USE_ECC_B_PARAM
#endif
#endif
/* Use this as the key->idx if a custom ecc_set is used for key->dp */
#define ECC_CUSTOM_IDX (-1)
/* Determine max ECC bits based on enabled curves */
#if defined(HAVE_ECC521) || defined(HAVE_ALL_CURVES)
#define MAX_ECC_BITS 521
#elif defined(HAVE_ECC512)
#define MAX_ECC_BITS 512
#elif defined(HAVE_ECC384)
#define MAX_ECC_BITS 384
#elif defined(HAVE_ECC320)
#define MAX_ECC_BITS 320
#elif !defined(NO_ECC256)
#define MAX_ECC_BITS 256
#elif defined(HAVE_ECC239)
#define MAX_ECC_BITS 239
#elif defined(HAVE_ECC224)
#define MAX_ECC_BITS 224
#elif defined(HAVE_ECC192)
#define MAX_ECC_BITS 192
#elif defined(HAVE_ECC160)
#define MAX_ECC_BITS 160
#elif defined(HAVE_ECC128)
#define MAX_ECC_BITS 128
#elif defined(HAVE_ECC112)
#define MAX_ECC_BITS 112
#endif
/* calculate max ECC bytes */
#if ((MAX_ECC_BITS * 2) % 8) == 0
#define MAX_ECC_BYTES (MAX_ECC_BITS / 8)
#else
/* add byte if not aligned */
#define MAX_ECC_BYTES ((MAX_ECC_BITS / 8) + 1)
#endif
#ifndef ECC_MAX_PAD_SZ
/* ECC maximum padding size (when MSB is set extra byte required for R and S) */
#define ECC_MAX_PAD_SZ 2
#endif
enum {
ECC_PUBLICKEY = 1,
ECC_PRIVATEKEY = 2,
ECC_PRIVATEKEY_ONLY = 3,
ECC_MAXNAME = 16, /* MAX CURVE NAME LENGTH */
SIG_HEADER_SZ = 7, /* ECC signature header size (30 81 87 02 42 [R] 02 42 [S]) */
ECC_BUFSIZE = 256, /* for exported keys temp buffer */
ECC_MINSIZE = 20, /* MIN Private Key size */
ECC_MAXSIZE = 66, /* MAX Private Key size */
ECC_MAXSIZE_GEN = 74, /* MAX Buffer size required when generating ECC keys*/
ECC_MAX_OID_LEN = 16,
ECC_MAX_SIG_SIZE= ((MAX_ECC_BYTES * 2) + ECC_MAX_PAD_SZ + SIG_HEADER_SZ),
/* max crypto hardware size */
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#if defined(WOLFSSL_ATECC508A) || defined(WOLFSSL_ATECC608A)
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ECC_MAX_CRYPTO_HW_SIZE = ATECC_KEY_SIZE, /* from port/atmel/atmel.h */
ECC_MAX_CRYPTO_HW_PUBKEY_SIZE = (ATECC_KEY_SIZE*2),
#elif defined(PLUTON_CRYPTO_ECC)
ECC_MAX_CRYPTO_HW_SIZE = 32,
#elif defined(WOLFSSL_CRYPTOCELL)
#ifndef CRYPTOCELL_KEY_SIZE
CRYPTOCELL_KEY_SIZE = ECC_MAXSIZE,
#endif
ECC_MAX_CRYPTO_HW_SIZE = CRYPTOCELL_KEY_SIZE,
#endif
/* point compression type */
ECC_POINT_COMP_EVEN = 0x02,
ECC_POINT_COMP_ODD = 0x03,
ECC_POINT_UNCOMP = 0x04,
/* Shamir's dual add constants */
SHAMIR_PRECOMP_SZ = 16,
#ifdef HAVE_PKCS11
ECC_MAX_ID_LEN = 32,
#endif
};
/* Curve Types */
typedef enum ecc_curve_id {
ECC_CURVE_INVALID = -1,
ECC_CURVE_DEF = 0, /* NIST or SECP */
/* NIST Prime Curves */
ECC_SECP192R1,
ECC_PRIME192V2,
ECC_PRIME192V3,
ECC_PRIME239V1,
ECC_PRIME239V2,
ECC_PRIME239V3,
ECC_SECP256R1,
/* SECP Curves */
ECC_SECP112R1,
ECC_SECP112R2,
ECC_SECP128R1,
ECC_SECP128R2,
ECC_SECP160R1,
ECC_SECP160R2,
ECC_SECP224R1,
ECC_SECP384R1,
ECC_SECP521R1,
/* Koblitz */
ECC_SECP160K1,
ECC_SECP192K1,
ECC_SECP224K1,
ECC_SECP256K1,
/* Brainpool Curves */
ECC_BRAINPOOLP160R1,
ECC_BRAINPOOLP192R1,
ECC_BRAINPOOLP224R1,
ECC_BRAINPOOLP256R1,
ECC_BRAINPOOLP320R1,
ECC_BRAINPOOLP384R1,
ECC_BRAINPOOLP512R1,
/* Twisted Edwards Curves */
#ifdef HAVE_CURVE25519
ECC_X25519,
#endif
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#ifdef HAVE_CURVE448
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ECC_X448,
#endif
#ifdef WOLFSSL_CUSTOM_CURVES
ECC_CURVE_CUSTOM,
#endif
} ecc_curve_id;
#ifdef HAVE_OID_ENCODING
typedef word16 ecc_oid_t;
#else
typedef byte ecc_oid_t;
/* OID encoded with ASN scheme:
first element = (oid[0] * 40) + oid[1]
if any element > 127 then MSB 0x80 indicates additional byte */
#endif
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#if !defined(WOLFSSL_ECC_CURVE_STATIC) && defined(USE_WINDOWS_API)
/* MSC does something different with the pointers to the arrays than GCC,
* and it causes the FIPS checksum to fail. In the case of windows builds,
* store everything as arrays instead of pointers to strings. */
#define WOLFSSL_ECC_CURVE_STATIC
#endif
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/* ECC set type defined a GF(p) curve */
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#ifndef WOLFSSL_ECC_CURVE_STATIC
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typedef struct ecc_set_type {
int size; /* The size of the curve in octets */
int id; /* id of this curve */
const char* name; /* name of this curve */
const char* prime; /* prime that defines the field, curve is in (hex) */
const char* Af; /* fields A param (hex) */
const char* Bf; /* fields B param (hex) */
const char* order; /* order of the curve (hex) */
const char* Gx; /* x coordinate of the base point on curve (hex) */
const char* Gy; /* y coordinate of the base point on curve (hex) */
const ecc_oid_t* oid;
word32 oidSz;
word32 oidSum; /* sum of encoded OID bytes */
int cofactor;
} ecc_set_type;
#else
#define MAX_ECC_NAME 16
#define MAX_ECC_STRING ((MAX_ECC_BYTES * 2) + 1)
/* The values are stored as text strings. */
typedef struct ecc_set_type {
int size; /* The size of the curve in octets */
int id; /* id of this curve */
const char name[MAX_ECC_NAME]; /* name of this curve */
const char prime[MAX_ECC_STRING]; /* prime that defines the field, curve is in (hex) */
const char Af[MAX_ECC_STRING]; /* fields A param (hex) */
const char Bf[MAX_ECC_STRING]; /* fields B param (hex) */
const char order[MAX_ECC_STRING]; /* order of the curve (hex) */
const char Gx[MAX_ECC_STRING]; /* x coordinate of the base point on curve (hex) */
const char Gy[MAX_ECC_STRING]; /* y coordinate of the base point on curve (hex) */
const ecc_oid_t oid[10];
word32 oidSz;
word32 oidSum; /* sum of encoded OID bytes */
int cofactor;
} ecc_set_type;
#endif
#ifdef ALT_ECC_SIZE
/* Note on ALT_ECC_SIZE:
* The fast math code uses an array of a fixed size to store the big integers.
* By default, the array is big enough for RSA keys. There is a size,
* FP_MAX_BITS which can be used to make the array smaller when one wants ECC
* but not RSA. Some people want fast math sized for both RSA and ECC, where
* ECC won't use as much as RSA. The flag ALT_ECC_SIZE switches in an alternate
* ecc_point structure that uses an alternate fp_int that has a shorter array
* of fp_digits.
*
* Now, without ALT_ECC_SIZE, the ecc_point has three single item arrays of
* mp_ints for the components of the point. With ALT_ECC_SIZE, the components
* of the point are pointers that are set to each of a three item array of
* alt_fp_ints. While an mp_int will have 4096 bits of digit inside the
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* structure, the alt_fp_int will only have 512 bits for ECC 256-bit and
* 1056-bits for ECC 521-bit. A size value was added in the ALT case, as well,
* and is set by mp_init() and alt_fp_init(). The functions fp_zero() and
* fp_copy() use the size parameter. An int needs to be initialized before
* using it instead of just fp_zeroing it, the init will call zero. The
* FP_MAX_BITS_ECC defaults to calculating based on MAX_ECC_BITS, but
* can be set to change the number of bits used in the alternate FP_INT.
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*
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* The ALT_ECC_SIZE option only applies to stack based fast math USE_FAST_MATH.
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*/
#ifndef USE_FAST_MATH
#error USE_FAST_MATH must be defined to use ALT_ECC_SIZE
#endif
/* determine max bits required for ECC math */
#ifndef FP_MAX_BITS_ECC
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/* max bits rounded up by 8 then doubled */
/* (ROUND8(MAX_ECC_BITS) * 2) */
#define FP_MAX_BITS_ECC (2 * \
((MAX_ECC_BITS + DIGIT_BIT - 1) / DIGIT_BIT) * DIGIT_BIT)
/* Note: For ECC verify only FP_MAX_BITS_ECC can be reduced to:
ROUND8(MAX_ECC_BITS) + ROUND8(DIGIT_BIT) */
#endif
/* verify alignment */
#if FP_MAX_BITS_ECC % CHAR_BIT
#error FP_MAX_BITS_ECC must be a multiple of CHAR_BIT
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#endif
/* determine buffer size */
#define FP_SIZE_ECC (FP_MAX_BITS_ECC/DIGIT_BIT)
/* This needs to match the size of the fp_int struct, except the
* fp_digit array will be shorter. */
typedef struct alt_fp_int {
int used, sign, size;
mp_digit dp[FP_SIZE_ECC];
} alt_fp_int;
#endif /* ALT_ECC_SIZE */
#ifndef WC_ECCKEY_TYPE_DEFINED
typedef struct ecc_key ecc_key;
#define WC_ECCKEY_TYPE_DEFINED
#endif
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/* A point on an ECC curve, stored in Jacobian format such that (x,y,z) =>
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(x/z^2, y/z^3, 1) when interpreted as affine */
typedef struct {
#ifndef ALT_ECC_SIZE
mp_int x[1]; /* The x coordinate */
mp_int y[1]; /* The y coordinate */
mp_int z[1]; /* The z coordinate */
#else
mp_int* x; /* The x coordinate */
mp_int* y; /* The y coordinate */
mp_int* z; /* The z coordinate */
alt_fp_int xyz[3];
#endif
#ifdef WOLFSSL_SMALL_STACK_CACHE
ecc_key* key;
#endif
} ecc_point;
/* ECC Flags */
enum {
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WC_ECC_FLAG_NONE = 0x00,
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#ifdef HAVE_ECC_CDH
WC_ECC_FLAG_COFACTOR = 0x01,
#endif
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WC_ECC_FLAG_DEC_SIGN = 0x02,
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};
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/* ECC non-blocking */
#ifdef WC_ECC_NONBLOCK
typedef struct ecc_nb_ctx {
#if defined(WOLFSSL_HAVE_SP_ECC) && defined(WOLFSSL_SP_NONBLOCK)
sp_ecc_ctx_t sp_ctx;
#else
/* build configuration not supported */
#error ECC non-blocking only supports SP (--enable-sp=nonblock)
#endif
} ecc_nb_ctx_t;
#endif /* WC_ECC_NONBLOCK */
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/* An ECC Key */
struct ecc_key {
int type; /* Public or Private */
int idx; /* Index into the ecc_sets[] for the parameters of
this curve if -1, this key is using user supplied
curve in dp */
int state;
word32 flags;
const ecc_set_type* dp; /* domain parameters, either points to NIST
curves (idx >= 0) or user supplied */
#ifdef WOLFSSL_CUSTOM_CURVES
int deallocSet;
#endif
void* heap; /* heap hint */
ecc_point pubkey; /* public key */
mp_int k; /* private key */
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#if defined(WOLFSSL_ATECC508A) || defined(WOLFSSL_ATECC608A)
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int slot; /* Key Slot Number (-1 unknown) */
byte pubkey_raw[ECC_MAX_CRYPTO_HW_PUBKEY_SIZE];
#endif
#if defined(PLUTON_CRYPTO_ECC) || defined(WOLF_CRYPTO_CB)
int devId;
#endif
#ifdef WOLFSSL_ASYNC_CRYPT
mp_int* r; /* sign/verify temps */
mp_int* s;
WC_ASYNC_DEV asyncDev;
#ifdef HAVE_CAVIUM_V
mp_int* e; /* Sign, Verify and Shared Secret */
mp_int* signK;
#endif
#ifdef WOLFSSL_CERT_GEN
CertSignCtx certSignCtx; /* context info for cert sign (MakeSignature) */
#endif
#endif /* WOLFSSL_ASYNC_CRYPT */
#ifdef HAVE_PKCS11
byte id[ECC_MAX_ID_LEN];
int idLen;
#endif
#if defined(WOLFSSL_CRYPTOCELL)
ecc_context_t ctx;
#endif
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#ifdef WOLFSSL_ECDSA_SET_K
mp_int *sign_k;
#endif
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#ifdef WOLFSSL_SMALL_STACK_CACHE
mp_int* t1;
mp_int* t2;
#ifdef ALT_ECC_SIZE
mp_int* x;
mp_int* y;
mp_int* z;
#endif
#endif
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#ifdef WOLFSSL_DSP
remote_handle64 handle;
#endif
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#ifdef ECC_TIMING_RESISTANT
WC_RNG* rng;
#endif
#ifdef WC_ECC_NONBLOCK
ecc_nb_ctx_t* nb_ctx;
#endif
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};
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WOLFSSL_ABI WOLFSSL_API ecc_key* wc_ecc_key_new(void*);
WOLFSSL_ABI WOLFSSL_API void wc_ecc_key_free(ecc_key*);
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/* ECC predefined curve sets */
extern const ecc_set_type ecc_sets[];
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extern const size_t ecc_sets_count;
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WOLFSSL_API
const char* wc_ecc_get_name(int curve_id);
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#if !defined(WOLFSSL_ATECC508A) && !defined(WOLFSSL_ATECC608A)
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#ifdef WOLFSSL_PUBLIC_ECC_ADD_DBL
#define ECC_API WOLFSSL_API
#else
#define ECC_API WOLFSSL_LOCAL
#endif
ECC_API int ecc_mul2add(ecc_point* A, mp_int* kA,
ecc_point* B, mp_int* kB,
ecc_point* C, mp_int* a, mp_int* modulus, void* heap);
ECC_API int ecc_map(ecc_point*, mp_int*, mp_digit);
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ECC_API int ecc_map_ex(ecc_point*, mp_int*, mp_digit, int ct);
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ECC_API int ecc_projective_add_point(ecc_point* P, ecc_point* Q, ecc_point* R,
mp_int* a, mp_int* modulus, mp_digit mp);
ECC_API int ecc_projective_dbl_point(ecc_point* P, ecc_point* R, mp_int* a,
mp_int* modulus, mp_digit mp);
#endif
WOLFSSL_API
int wc_ecc_make_key(WC_RNG* rng, int keysize, ecc_key* key);
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WOLFSSL_ABI WOLFSSL_API
int wc_ecc_make_key_ex(WC_RNG* rng, int keysize, ecc_key* key, int curve_id);
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WOLFSSL_API
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int wc_ecc_make_key_ex2(WC_RNG* rng, int keysize, ecc_key* key, int curve_id,
int flags);
WOLFSSL_API
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int wc_ecc_make_pub(ecc_key* key, ecc_point* pubOut);
WOLFSSL_API
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int wc_ecc_make_pub_ex(ecc_key* key, ecc_point* pubOut, WC_RNG* rng);
WOLFSSL_API
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int wc_ecc_check_key(ecc_key* key);
WOLFSSL_API
int wc_ecc_is_point(ecc_point* ecp, mp_int* a, mp_int* b, mp_int* prime);
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WOLFSSL_API
int wc_ecc_get_generator(ecc_point* ecp, int curve_idx);
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#ifdef HAVE_ECC_DHE
WOLFSSL_API
int wc_ecc_shared_secret(ecc_key* private_key, ecc_key* public_key, byte* out,
word32* outlen);
WOLFSSL_LOCAL
int wc_ecc_shared_secret_gen(ecc_key* private_key, ecc_point* point,
byte* out, word32 *outlen);
WOLFSSL_API
int wc_ecc_shared_secret_ex(ecc_key* private_key, ecc_point* point,
byte* out, word32 *outlen);
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#if defined(WOLFSSL_ATECC508A) || defined(WOLFSSL_ATECC608A) || \
defined(PLUTON_CRYPTO_ECC) || defined(WOLFSSL_CRYPTOCELL)
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#define wc_ecc_shared_secret_ssh wc_ecc_shared_secret
#else
#define wc_ecc_shared_secret_ssh wc_ecc_shared_secret_ex /* For backwards compat */
#endif
#endif /* HAVE_ECC_DHE */
#ifdef HAVE_ECC_SIGN
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WOLFSSL_ABI WOLFSSL_API
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int wc_ecc_sign_hash(const byte* in, word32 inlen, byte* out, word32 *outlen,
WC_RNG* rng, ecc_key* key);
WOLFSSL_API
int wc_ecc_sign_hash_ex(const byte* in, word32 inlen, WC_RNG* rng,
ecc_key* key, mp_int *r, mp_int *s);
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#ifdef WOLFSSL_ECDSA_SET_K
WOLFSSL_API
int wc_ecc_sign_set_k(const byte* k, word32 klen, ecc_key* key);
#endif
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#endif /* HAVE_ECC_SIGN */
#ifdef HAVE_ECC_VERIFY
WOLFSSL_API
int wc_ecc_verify_hash(const byte* sig, word32 siglen, const byte* hash,
word32 hashlen, int* stat, ecc_key* key);
WOLFSSL_API
int wc_ecc_verify_hash_ex(mp_int *r, mp_int *s, const byte* hash,
word32 hashlen, int* stat, ecc_key* key);
#endif /* HAVE_ECC_VERIFY */
WOLFSSL_API
int wc_ecc_init(ecc_key* key);
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WOLFSSL_ABI WOLFSSL_API
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int wc_ecc_init_ex(ecc_key* key, void* heap, int devId);
#ifdef HAVE_PKCS11
WOLFSSL_API
int wc_ecc_init_id(ecc_key* key, unsigned char* id, int len, void* heap,
int devId);
#endif
#ifdef WOLFSSL_CUSTOM_CURVES
WOLFSSL_LOCAL
void wc_ecc_free_curve(const ecc_set_type* curve, void* heap);
#endif
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WOLFSSL_ABI WOLFSSL_API
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int wc_ecc_free(ecc_key* key);
WOLFSSL_API
int wc_ecc_set_flags(ecc_key* key, word32 flags);
WOLFSSL_API
void wc_ecc_fp_free(void);
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WOLFSSL_LOCAL
void wc_ecc_fp_init(void);
#ifdef ECC_TIMING_RESISTANT
WOLFSSL_API
int wc_ecc_set_rng(ecc_key* key, WC_RNG* rng);
#endif
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WOLFSSL_API
int wc_ecc_set_curve(ecc_key* key, int keysize, int curve_id);
WOLFSSL_API
int wc_ecc_is_valid_idx(int n);
WOLFSSL_API
int wc_ecc_get_curve_idx(int curve_id);
WOLFSSL_API
int wc_ecc_get_curve_id(int curve_idx);
#define wc_ecc_get_curve_name_from_id wc_ecc_get_name
WOLFSSL_API
int wc_ecc_get_curve_size_from_id(int curve_id);
WOLFSSL_API
int wc_ecc_get_curve_idx_from_name(const char* curveName);
WOLFSSL_API
int wc_ecc_get_curve_size_from_name(const char* curveName);
WOLFSSL_API
int wc_ecc_get_curve_id_from_name(const char* curveName);
WOLFSSL_API
int wc_ecc_get_curve_id_from_params(int fieldSize,
const byte* prime, word32 primeSz, const byte* Af, word32 AfSz,
const byte* Bf, word32 BfSz, const byte* order, word32 orderSz,
const byte* Gx, word32 GxSz, const byte* Gy, word32 GySz, int cofactor);
WOLFSSL_API
int wc_ecc_get_curve_id_from_dp_params(const ecc_set_type* dp);
WOLFSSL_API
int wc_ecc_get_curve_id_from_oid(const byte* oid, word32 len);
WOLFSSL_API const ecc_set_type* wc_ecc_get_curve_params(int curve_idx);
WOLFSSL_API
ecc_point* wc_ecc_new_point(void);
WOLFSSL_API
ecc_point* wc_ecc_new_point_h(void* h);
WOLFSSL_API
void wc_ecc_del_point(ecc_point* p);
WOLFSSL_API
void wc_ecc_del_point_h(ecc_point* p, void* h);
WOLFSSL_API
int wc_ecc_copy_point(ecc_point* p, ecc_point *r);
WOLFSSL_API
int wc_ecc_cmp_point(ecc_point* a, ecc_point *b);
WOLFSSL_API
int wc_ecc_point_is_at_infinity(ecc_point *p);
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WOLFSSL_API
int wc_ecc_point_is_on_curve(ecc_point *p, int curve_idx);
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#if !defined(WOLFSSL_ATECC508A) && !defined(WOLFSSL_ATECC608A)
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WOLFSSL_API
int wc_ecc_mulmod(mp_int* k, ecc_point *G, ecc_point *R,
mp_int* a, mp_int* modulus, int map);
WOLFSSL_LOCAL
int wc_ecc_mulmod_ex(mp_int* k, ecc_point *G, ecc_point *R,
mp_int* a, mp_int* modulus, int map, void* heap);
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WOLFSSL_LOCAL
int wc_ecc_mulmod_ex2(mp_int* k, ecc_point *G, ecc_point *R, mp_int* a,
mp_int* modulus, mp_int* order, WC_RNG* rng, int map,
void* heap);
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#endif /* !WOLFSSL_ATECC508A */
#ifdef HAVE_ECC_KEY_EXPORT
/* ASN key helpers */
WOLFSSL_API
int wc_ecc_export_x963(ecc_key*, byte* out, word32* outLen);
WOLFSSL_API
int wc_ecc_export_x963_ex(ecc_key*, byte* out, word32* outLen, int compressed);
/* extended functionality with compressed option */
#endif /* HAVE_ECC_KEY_EXPORT */
#ifdef HAVE_ECC_KEY_IMPORT
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WOLFSSL_ABI WOLFSSL_API
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int wc_ecc_import_x963(const byte* in, word32 inLen, ecc_key* key);
WOLFSSL_API
int wc_ecc_import_x963_ex(const byte* in, word32 inLen, ecc_key* key,
int curve_id);
WOLFSSL_API
int wc_ecc_import_private_key(const byte* priv, word32 privSz, const byte* pub,
word32 pubSz, ecc_key* key);
WOLFSSL_API
int wc_ecc_import_private_key_ex(const byte* priv, word32 privSz,
const byte* pub, word32 pubSz, ecc_key* key, int curve_id);
WOLFSSL_API
int wc_ecc_rs_to_sig(const char* r, const char* s, byte* out, word32* outlen);
WOLFSSL_API
int wc_ecc_rs_raw_to_sig(const byte* r, word32 rSz, const byte* s, word32 sSz,
byte* out, word32* outlen);
WOLFSSL_API
int wc_ecc_sig_to_rs(const byte* sig, word32 sigLen, byte* r, word32* rLen,
byte* s, word32* sLen);
WOLFSSL_API
int wc_ecc_import_raw(ecc_key* key, const char* qx, const char* qy,
const char* d, const char* curveName);
WOLFSSL_API
int wc_ecc_import_raw_ex(ecc_key* key, const char* qx, const char* qy,
const char* d, int curve_id);
WOLFSSL_API
int wc_ecc_import_unsigned(ecc_key* key, byte* qx, byte* qy,
byte* d, int curve_id);
#endif /* HAVE_ECC_KEY_IMPORT */
#ifdef HAVE_ECC_KEY_EXPORT
WOLFSSL_API
int wc_ecc_export_ex(ecc_key* key, byte* qx, word32* qxLen,
byte* qy, word32* qyLen, byte* d, word32* dLen,
int encType);
WOLFSSL_API
int wc_ecc_export_private_only(ecc_key* key, byte* out, word32* outLen);
WOLFSSL_API
int wc_ecc_export_public_raw(ecc_key* key, byte* qx, word32* qxLen,
byte* qy, word32* qyLen);
WOLFSSL_API
int wc_ecc_export_private_raw(ecc_key* key, byte* qx, word32* qxLen,
byte* qy, word32* qyLen, byte* d, word32* dLen);
#endif /* HAVE_ECC_KEY_EXPORT */
#ifdef HAVE_ECC_KEY_EXPORT
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WOLFSSL_API
int wc_ecc_export_point_der_ex(const int curve_idx, ecc_point* point, byte* out,
word32* outLen, int compressed);
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WOLFSSL_API
int wc_ecc_export_point_der(const int curve_idx, ecc_point* point,
byte* out, word32* outLen);
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WOLFSSL_LOCAL
int wc_ecc_export_point_der_compressed(const int curve_idx, ecc_point* point,
byte* out, word32* outLen);
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#endif /* HAVE_ECC_KEY_EXPORT */
#ifdef HAVE_ECC_KEY_IMPORT
WOLFSSL_API
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int wc_ecc_import_point_der_ex(byte* in, word32 inLen, const int curve_idx,
ecc_point* point, int shortKeySize);
WOLFSSL_API
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int wc_ecc_import_point_der(byte* in, word32 inLen, const int curve_idx,
ecc_point* point);
#endif /* HAVE_ECC_KEY_IMPORT */
/* size helper */
WOLFSSL_API
int wc_ecc_size(ecc_key* key);
WOLFSSL_API
int wc_ecc_sig_size_calc(int sz);
WOLFSSL_API
int wc_ecc_sig_size(ecc_key* key);
WOLFSSL_API
int wc_ecc_get_oid(word32 oidSum, const byte** oid, word32* oidSz);
#ifdef WOLFSSL_CUSTOM_CURVES
WOLFSSL_API
int wc_ecc_set_custom_curve(ecc_key* key, const ecc_set_type* dp);
#endif
#ifdef HAVE_ECC_ENCRYPT
/* ecc encrypt */
enum ecEncAlgo {
ecAES_128_CBC = 1, /* default */
ecAES_256_CBC = 2
};
enum ecKdfAlgo {
ecHKDF_SHA256 = 1, /* default */
ecHKDF_SHA1 = 2
};
enum ecMacAlgo {
ecHMAC_SHA256 = 1, /* default */
ecHMAC_SHA1 = 2
};
enum {
KEY_SIZE_128 = 16,
KEY_SIZE_256 = 32,
IV_SIZE_64 = 8,
IV_SIZE_128 = 16,
EXCHANGE_SALT_SZ = 16,
EXCHANGE_INFO_SZ = 23
};
enum ecFlags {
REQ_RESP_CLIENT = 1,
REQ_RESP_SERVER = 2
};
typedef struct ecEncCtx ecEncCtx;
WOLFSSL_API
ecEncCtx* wc_ecc_ctx_new(int flags, WC_RNG* rng);
WOLFSSL_API
ecEncCtx* wc_ecc_ctx_new_ex(int flags, WC_RNG* rng, void* heap);
WOLFSSL_API
void wc_ecc_ctx_free(ecEncCtx*);
WOLFSSL_API
int wc_ecc_ctx_reset(ecEncCtx*, WC_RNG*); /* reset for use again w/o alloc/free */
WOLFSSL_API
const byte* wc_ecc_ctx_get_own_salt(ecEncCtx*);
WOLFSSL_API
int wc_ecc_ctx_set_peer_salt(ecEncCtx*, const byte* salt);
WOLFSSL_API
int wc_ecc_ctx_set_info(ecEncCtx*, const byte* info, int sz);
WOLFSSL_API
int wc_ecc_encrypt(ecc_key* privKey, ecc_key* pubKey, const byte* msg,
word32 msgSz, byte* out, word32* outSz, ecEncCtx* ctx);
WOLFSSL_API
int wc_ecc_decrypt(ecc_key* privKey, ecc_key* pubKey, const byte* msg,
word32 msgSz, byte* out, word32* outSz, ecEncCtx* ctx);
#endif /* HAVE_ECC_ENCRYPT */
#ifdef HAVE_X963_KDF
WOLFSSL_API int wc_X963_KDF(enum wc_HashType type, const byte* secret,
word32 secretSz, const byte* sinfo, word32 sinfoSz,
byte* out, word32 outSz);
#endif
#ifdef ECC_CACHE_CURVE
WOLFSSL_API int wc_ecc_curve_cache_init(void);
WOLFSSL_API void wc_ecc_curve_cache_free(void);
#endif
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WOLFSSL_API
int wc_ecc_gen_k(WC_RNG* rng, int size, mp_int* k, mp_int* order);
#ifdef WOLFSSL_DSP
WOLFSSL_API
int wc_ecc_set_handle(ecc_key* key, remote_handle64 handle);
WOLFSSL_LOCAL
int sp_dsp_ecc_verify_256(remote_handle64 handle, const byte* hash, word32 hashLen, mp_int* pX,
mp_int* pY, mp_int* pZ, mp_int* r, mp_int* sm, int* res, void* heap);
#endif
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#ifdef WC_ECC_NONBLOCK
WOLFSSL_API int wc_ecc_set_nonblock(ecc_key *key, ecc_nb_ctx_t* ctx);
#endif
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#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* HAVE_ECC */
#endif /* WOLF_CRYPT_ECC_H */
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