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392 lines
14 KiB
C
392 lines
14 KiB
C
/* rsa.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/rsa.h
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*/
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/*
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DESCRIPTION
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This library provides the interface to the RSA.
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RSA keys can be used to encrypt, decrypt, sign and verify data.
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*/
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#ifndef WOLF_CRYPT_RSA_H
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#define WOLF_CRYPT_RSA_H
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#include <libs/libwolfssl/wolfcrypt/types.h>
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#ifndef NO_RSA
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/* RSA default exponent */
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#ifndef WC_RSA_EXPONENT
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#define WC_RSA_EXPONENT 65537L
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#endif
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#if defined(WC_RSA_NONBLOCK)
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/* enable support for fast math based non-blocking exptmod */
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/* this splits the RSA function into many smaller operations */
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#ifndef USE_FAST_MATH
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#error RSA non-blocking mode only supported using fast math
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#endif
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#ifndef TFM_TIMING_RESISTANT
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#error RSA non-blocking mode only supported with timing resistance enabled
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#endif
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/* RSA bounds check is not supported with RSA non-blocking mode */
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#undef NO_RSA_BOUNDS_CHECK
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#define NO_RSA_BOUNDS_CHECK
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#endif
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/* allow for user to plug in own crypto */
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#if !defined(HAVE_FIPS) && (defined(HAVE_USER_RSA) || defined(HAVE_FAST_RSA))
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#include "user_rsa.h"
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#else
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#if defined(HAVE_FIPS) && \
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(!defined(HAVE_FIPS_VERSION) || (HAVE_FIPS_VERSION < 2))
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/* for fips @wc_fips */
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#include <cyassl/ctaocrypt/rsa.h>
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#if defined(CYASSL_KEY_GEN) && !defined(WOLFSSL_KEY_GEN)
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#define WOLFSSL_KEY_GEN
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#endif
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#else
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#include <libs/libwolfssl/wolfcrypt/integer.h>
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#include <libs/libwolfssl/wolfcrypt/random.h>
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#endif /* HAVE_FIPS && HAVE_FIPS_VERION 1 */
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#if defined(HAVE_FIPS) && \
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defined(HAVE_FIPS_VERSION) && (HAVE_FIPS_VERSION >= 2)
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#include <libs/libwolfssl/wolfcrypt/fips.h>
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#endif
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/* header file needed for OAEP padding */
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#include <libs/libwolfssl/wolfcrypt/hash.h>
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#ifdef WOLFSSL_XILINX_CRYPT
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#include "xsecure_rsa.h"
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#endif
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#if defined(WOLFSSL_CRYPTOCELL)
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#include <libs/libwolfssl/wolfcrypt/port/arm/cryptoCell.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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#ifndef RSA_MIN_SIZE
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#define RSA_MIN_SIZE 512
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#endif
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#ifndef RSA_MAX_SIZE
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#define RSA_MAX_SIZE 4096
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#endif
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/* avoid redefinition of structs */
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#if !defined(HAVE_FIPS) || \
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(defined(HAVE_FIPS_VERSION) && (HAVE_FIPS_VERSION >= 2))
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#ifdef WOLFSSL_ASYNC_CRYPT
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#include <libs/libwolfssl/wolfcrypt/async.h>
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#ifdef WOLFSSL_CERT_GEN
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#include <libs/libwolfssl/wolfcrypt/asn.h>
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#endif
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#endif
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enum {
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RSA_PUBLIC = 0,
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RSA_PRIVATE = 1,
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RSA_TYPE_UNKNOWN = -1,
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RSA_PUBLIC_ENCRYPT = 0,
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RSA_PUBLIC_DECRYPT = 1,
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RSA_PRIVATE_ENCRYPT = 2,
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RSA_PRIVATE_DECRYPT = 3,
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RSA_BLOCK_TYPE_1 = 1,
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RSA_BLOCK_TYPE_2 = 2,
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RSA_MIN_PAD_SZ = 11, /* separator + 0 + pad value + 8 pads */
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RSA_PSS_PAD_SZ = 8,
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RSA_PSS_SALT_MAX_SZ = 62,
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#ifdef OPENSSL_EXTRA
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RSA_PKCS1_PADDING_SIZE = 11,
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RSA_PKCS1_OAEP_PADDING_SIZE = 42, /* (2 * hashlen(SHA-1)) + 2 */
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#endif
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#ifdef WC_RSA_PSS
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RSA_PSS_PAD_TERM = 0xBC,
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#endif
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RSA_PSS_SALT_LEN_DEFAULT = -1,
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#ifdef WOLFSSL_PSS_SALT_LEN_DISCOVER
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RSA_PSS_SALT_LEN_DISCOVER = -2,
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#endif
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#ifdef WOLF_CRYPTO_CB
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RSA_MAX_ID_LEN = 32,
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RSA_MAX_LABEL_LEN = 32,
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#endif
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};
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#ifdef WC_RSA_NONBLOCK
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typedef struct RsaNb {
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exptModNb_t exptmod; /* non-block expt_mod */
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mp_int tmp;
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} RsaNb;
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#endif
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/* RSA */
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struct RsaKey {
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mp_int n, e;
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#ifndef WOLFSSL_RSA_PUBLIC_ONLY
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mp_int d, p, q;
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#if defined(WOLFSSL_KEY_GEN) || defined(OPENSSL_EXTRA) || !defined(RSA_LOW_MEM)
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mp_int dP, dQ, u;
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#endif
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#endif
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void* heap; /* for user memory overrides */
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byte* data; /* temp buffer for async RSA */
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int type; /* public or private */
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int state;
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word32 dataLen;
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#ifdef WC_RSA_BLINDING
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WC_RNG* rng; /* for PrivateDecrypt blinding */
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#endif
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#ifdef WOLF_CRYPTO_CB
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int devId;
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#endif
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#ifdef WOLFSSL_ASYNC_CRYPT
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WC_ASYNC_DEV asyncDev;
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#ifdef WOLFSSL_CERT_GEN
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CertSignCtx certSignCtx; /* context info for cert sign (MakeSignature) */
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#endif
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#endif /* WOLFSSL_ASYNC_CRYPT */
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#ifdef WOLFSSL_XILINX_CRYPT
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word32 pubExp; /* to keep values in scope they are here in struct */
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byte* mod;
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XSecure_Rsa xRsa;
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#endif
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#ifdef WOLF_CRYPTO_CB
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byte id[RSA_MAX_ID_LEN];
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int idLen;
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char label[RSA_MAX_LABEL_LEN];
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int labelLen;
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#endif
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#if defined(WOLFSSL_ASYNC_CRYPT) || !defined(WOLFSSL_RSA_VERIFY_INLINE)
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byte dataIsAlloc;
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#endif
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#ifdef WC_RSA_NONBLOCK
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RsaNb* nb;
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#endif
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#ifdef WOLFSSL_AFALG_XILINX_RSA
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int alFd;
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int rdFd;
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#endif
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#if defined(WOLFSSL_CRYPTOCELL)
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rsa_context_t ctx;
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#endif
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};
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#ifndef WC_RSAKEY_TYPE_DEFINED
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typedef struct RsaKey RsaKey;
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#define WC_RSAKEY_TYPE_DEFINED
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#endif
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#endif /*HAVE_FIPS */
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WOLFSSL_API int wc_InitRsaKey(RsaKey* key, void* heap);
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WOLFSSL_API int wc_InitRsaKey_ex(RsaKey* key, void* heap, int devId);
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WOLFSSL_API int wc_FreeRsaKey(RsaKey* key);
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#ifdef WOLF_CRYPTO_CB
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WOLFSSL_API int wc_InitRsaKey_Id(RsaKey* key, unsigned char* id, int len,
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void* heap, int devId);
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WOLFSSL_API int wc_InitRsaKey_Label(RsaKey* key, const char* label, void* heap,
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int devId);
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#endif
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WOLFSSL_API int wc_CheckRsaKey(RsaKey* key);
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#ifdef WOLFSSL_XILINX_CRYPT
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WOLFSSL_LOCAL int wc_InitRsaHw(RsaKey* key);
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#endif /* WOLFSSL_XILINX_CRYPT */
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WOLFSSL_API int wc_RsaFunction(const byte* in, word32 inLen, byte* out,
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word32* outLen, int type, RsaKey* key, WC_RNG* rng);
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WOLFSSL_API int wc_RsaPublicEncrypt(const byte* in, word32 inLen, byte* out,
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word32 outLen, RsaKey* key, WC_RNG* rng);
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WOLFSSL_API int wc_RsaPrivateDecryptInline(byte* in, word32 inLen, byte** out,
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RsaKey* key);
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WOLFSSL_API int wc_RsaPrivateDecrypt(const byte* in, word32 inLen, byte* out,
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word32 outLen, RsaKey* key);
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WOLFSSL_API int wc_RsaSSL_Sign(const byte* in, word32 inLen, byte* out,
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word32 outLen, RsaKey* key, WC_RNG* rng);
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WOLFSSL_API int wc_RsaPSS_Sign(const byte* in, word32 inLen, byte* out,
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word32 outLen, enum wc_HashType hash, int mgf,
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RsaKey* key, WC_RNG* rng);
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WOLFSSL_API int wc_RsaPSS_Sign_ex(const byte* in, word32 inLen, byte* out,
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word32 outLen, enum wc_HashType hash,
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int mgf, int saltLen, RsaKey* key,
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WC_RNG* rng);
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WOLFSSL_API int wc_RsaSSL_VerifyInline(byte* in, word32 inLen, byte** out,
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RsaKey* key);
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WOLFSSL_API int wc_RsaSSL_Verify(const byte* in, word32 inLen, byte* out,
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word32 outLen, RsaKey* key);
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WOLFSSL_API int wc_RsaSSL_Verify_ex(const byte* in, word32 inLen, byte* out,
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word32 outLen, RsaKey* key, int pad_type);
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WOLFSSL_API int wc_RsaSSL_Verify_ex2(const byte* in, word32 inLen, byte* out,
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word32 outLen, RsaKey* key, int pad_type,
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enum wc_HashType hash);
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WOLFSSL_API int wc_RsaPSS_VerifyInline(byte* in, word32 inLen, byte** out,
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enum wc_HashType hash, int mgf,
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RsaKey* key);
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WOLFSSL_API int wc_RsaPSS_VerifyInline_ex(byte* in, word32 inLen, byte** out,
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enum wc_HashType hash, int mgf,
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int saltLen, RsaKey* key);
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WOLFSSL_API int wc_RsaPSS_Verify(byte* in, word32 inLen, byte* out,
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word32 outLen, enum wc_HashType hash, int mgf,
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RsaKey* key);
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WOLFSSL_API int wc_RsaPSS_Verify_ex(byte* in, word32 inLen, byte* out,
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word32 outLen, enum wc_HashType hash,
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int mgf, int saltLen, RsaKey* key);
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WOLFSSL_API int wc_RsaPSS_CheckPadding(const byte* in, word32 inLen, byte* sig,
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word32 sigSz,
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enum wc_HashType hashType);
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WOLFSSL_API int wc_RsaPSS_CheckPadding_ex(const byte* in, word32 inLen,
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byte* sig, word32 sigSz,
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enum wc_HashType hashType,
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int saltLen, int bits);
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WOLFSSL_API int wc_RsaPSS_VerifyCheckInline(byte* in, word32 inLen, byte** out,
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const byte* digest, word32 digentLen,
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enum wc_HashType hash, int mgf,
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RsaKey* key);
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WOLFSSL_API int wc_RsaPSS_VerifyCheck(byte* in, word32 inLen,
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byte* out, word32 outLen,
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const byte* digest, word32 digestLen,
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enum wc_HashType hash, int mgf,
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RsaKey* key);
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WOLFSSL_API int wc_RsaEncryptSize(const RsaKey* key);
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#if !defined(HAVE_FIPS) || \
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(defined(HAVE_FIPS_VERSION) && (HAVE_FIPS_VERSION >= 2))
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/* to avoid asn duplicate symbols @wc_fips */
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WOLFSSL_API int wc_RsaPrivateKeyDecode(const byte* input, word32* inOutIdx,
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RsaKey*, word32);
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WOLFSSL_API int wc_RsaPublicKeyDecode(const byte* input, word32* inOutIdx,
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RsaKey*, word32);
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WOLFSSL_API int wc_RsaPublicKeyDecodeRaw(const byte* n, word32 nSz,
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const byte* e, word32 eSz, RsaKey* key);
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#if defined(WOLFSSL_KEY_GEN) || defined(OPENSSL_EXTRA)
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WOLFSSL_API int wc_RsaKeyToDer(RsaKey*, byte* output, word32 inLen);
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#endif
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#ifdef WC_RSA_BLINDING
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WOLFSSL_API int wc_RsaSetRNG(RsaKey* key, WC_RNG* rng);
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#endif
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#ifdef WC_RSA_NONBLOCK
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WOLFSSL_API int wc_RsaSetNonBlock(RsaKey* key, RsaNb* nb);
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#ifdef WC_RSA_NONBLOCK_TIME
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WOLFSSL_API int wc_RsaSetNonBlockTime(RsaKey* key, word32 maxBlockUs,
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word32 cpuMHz);
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#endif
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#endif
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/*
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choice of padding added after fips, so not available when using fips RSA
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*/
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/* Mask Generation Function Identifiers */
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#define WC_MGF1NONE 0
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#define WC_MGF1SHA1 26
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#define WC_MGF1SHA224 4
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#define WC_MGF1SHA256 1
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#define WC_MGF1SHA384 2
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#define WC_MGF1SHA512 3
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/* Padding types */
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#define WC_RSA_PKCSV15_PAD 0
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#define WC_RSA_OAEP_PAD 1
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#define WC_RSA_PSS_PAD 2
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#define WC_RSA_NO_PAD 3
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WOLFSSL_API int wc_RsaPublicEncrypt_ex(const byte* in, word32 inLen, byte* out,
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word32 outLen, RsaKey* key, WC_RNG* rng, int type,
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enum wc_HashType hash, int mgf, byte* label, word32 lableSz);
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WOLFSSL_API int wc_RsaPrivateDecrypt_ex(const byte* in, word32 inLen,
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byte* out, word32 outLen, RsaKey* key, int type,
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enum wc_HashType hash, int mgf, byte* label, word32 lableSz);
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WOLFSSL_API int wc_RsaPrivateDecryptInline_ex(byte* in, word32 inLen,
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byte** out, RsaKey* key, int type, enum wc_HashType hash,
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int mgf, byte* label, word32 lableSz);
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#if defined(WC_RSA_DIRECT) || defined(WC_RSA_NO_PADDING)
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WOLFSSL_API int wc_RsaDirect(byte* in, word32 inLen, byte* out, word32* outSz,
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RsaKey* key, int type, WC_RNG* rng);
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#endif
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#endif /* HAVE_FIPS */
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WOLFSSL_API int wc_RsaFlattenPublicKey(RsaKey*, byte*, word32*, byte*,
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word32*);
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WOLFSSL_API int wc_RsaExportKey(RsaKey* key,
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byte* e, word32* eSz,
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byte* n, word32* nSz,
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byte* d, word32* dSz,
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byte* p, word32* pSz,
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byte* q, word32* qSz);
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WOLFSSL_API int wc_RsaKeyToPublicDer(RsaKey*, byte* output, word32 inLen);
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#ifdef WOLFSSL_KEY_GEN
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WOLFSSL_API int wc_MakeRsaKey(RsaKey* key, int size, long e, WC_RNG* rng);
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WOLFSSL_API int wc_CheckProbablePrime_ex(const byte* p, word32 pSz,
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const byte* q, word32 qSz,
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const byte* e, word32 eSz,
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int nlen, int* isPrime, WC_RNG* rng);
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WOLFSSL_API int wc_CheckProbablePrime(const byte* p, word32 pSz,
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const byte* q, word32 qSz,
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const byte* e, word32 eSz,
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int nlen, int* isPrime);
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#endif
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WOLFSSL_LOCAL int wc_RsaPad_ex(const byte* input, word32 inputLen, byte* pkcsBlock,
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word32 pkcsBlockLen, byte padValue, WC_RNG* rng, int padType,
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enum wc_HashType hType, int mgf, byte* optLabel, word32 labelLen,
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int saltLen, int bits, void* heap);
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WOLFSSL_LOCAL int wc_RsaUnPad_ex(byte* pkcsBlock, word32 pkcsBlockLen, byte** out,
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byte padValue, int padType, enum wc_HashType hType,
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int mgf, byte* optLabel, word32 labelLen, int saltLen,
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int bits, void* heap);
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WOLFSSL_LOCAL int wc_hash2mgf(enum wc_HashType hType);
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#endif /* HAVE_USER_RSA */
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* NO_RSA */
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#endif /* WOLF_CRYPT_RSA_H */
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