1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495969798991001011021031041051061071081091101111121131141151161171181191201211221231241251261271281291301311321331341351361371381391401411421431441451461471481491501511521531541551561571581591601611621631641651661671681691701711721731741751761771781791801811821831841851861871881891901911921931941951961971981992002012022032042052062072082092102112122132142152162172182192202212222232242252262272282292302312322332342352362372382392402412422432442452462472482492502512522532542552562572582592602612622632642652662672682692702712722732742752762772782792802812822832842852862872882892902912922932942952962972982993003013023033043053063073083093103113123133143153163173183193203213223233243253263273283293303313323333343353363373383393403413423433443453463473483493503513523533543553563573583593603613623633643653663673683693703713723733743753763773783793803813823833843853863873883893903913923933943953963973983994004014024034044054064074084094104114124134144154164174184194204214224234244254264274284294304314324334344354364374384394404414424434444454464474484494504514524534544554564574584594604614624634644654664674684694704714724734744754764774784794804814824834844854864874884894904914924934944954964974984995005015025035045055065075085095105115125135145155165175185195205215225235245255265275285295305315325335345355365375385395405415425435445455465475485495505515525535545555565575585595605615625635645655665675685695705715725735745755765775785795805815825835845855865875885895905915925935945955965975985996006016026036046056066076086096106116126136146156166176186196206216226236246256266276286296306316326336346356366376386396406416426436446456466476486496506516526536546556566576586596606616626636646656666676686696706716726736746756766776786796806816826836846856866876886896906916926936946956966976986997007017027037047057067077087097107117127137147157167177187197207217227237247257267277287297307317327337347357367377387397407417427437447457467477487497507517527537547557567577587597607617627637647657667677687697707717727737747757767777787797807817827837847857867877887897907917927937947957967977987998008018028038048058068078088098108118128138148158168178188198208218228238248258268278288298308318328338348358368378388398408418428438448458468478488498508518528538548558568578588598608618628638648658668678688698708718728738748758768778788798808818828838848858868878888898908918928938948958968978988999009019029039049059069079089099109119129139149159169179189199209219229239249259269279289299309319329339349359369379389399409419429439449459469479489499509519529539549559569579589599609619629639649659669679689699709719729739749759769779789799809819829839849859869879889899909919929939949959969979989991000100110021003100410051006100710081009101010111012101310141015101610171018101910201021102210231024102510261027102810291030103110321033103410351036103710381039104010411042104310441045104610471048104910501051105210531054105510561057105810591060106110621063106410651066106710681069107010711072107310741075107610771078107910801081108210831084108510861087108810891090109110921093109410951096109710981099110011011102110311041105110611071108110911101111111211131114111511161117111811191120112111221123112411251126112711281129113011311132113311341135113611371138 |
- /**
- * \file rsa.h
- *
- * \brief The RSA public-key cryptosystem.
- *
- * For more information, see <em>Public-Key Cryptography Standards (PKCS)
- * #1 v1.5: RSA Encryption</em> and <em>Public-Key Cryptography Standards
- * (PKCS) #1 v2.1: RSA Cryptography Specifications</em>.
- *
- */
- /*
- * Copyright (C) 2006-2018, Arm Limited (or its affiliates), All Rights Reserved
- * SPDX-License-Identifier: Apache-2.0
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may
- * not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * This file is part of Mbed TLS (https://tls.mbed.org)
- */
- #ifndef MBEDTLS_RSA_H
- #define MBEDTLS_RSA_H
- #if !defined(MBEDTLS_CONFIG_FILE)
- #include "config.h"
- #else
- #include MBEDTLS_CONFIG_FILE
- #endif
- #include "bignum.h"
- #include "md.h"
- #if defined(MBEDTLS_THREADING_C)
- #include "threading.h"
- #endif
- /*
- * RSA Error codes
- */
- #define MBEDTLS_ERR_RSA_BAD_INPUT_DATA -0x4080 /**< Bad input parameters to function. */
- #define MBEDTLS_ERR_RSA_INVALID_PADDING -0x4100 /**< Input data contains invalid padding and is rejected. */
- #define MBEDTLS_ERR_RSA_KEY_GEN_FAILED -0x4180 /**< Something failed during generation of a key. */
- #define MBEDTLS_ERR_RSA_KEY_CHECK_FAILED -0x4200 /**< Key failed to pass the validity check of the library. */
- #define MBEDTLS_ERR_RSA_PUBLIC_FAILED -0x4280 /**< The public key operation failed. */
- #define MBEDTLS_ERR_RSA_PRIVATE_FAILED -0x4300 /**< The private key operation failed. */
- #define MBEDTLS_ERR_RSA_VERIFY_FAILED -0x4380 /**< The PKCS#1 verification failed. */
- #define MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE -0x4400 /**< The output buffer for decryption is not large enough. */
- #define MBEDTLS_ERR_RSA_RNG_FAILED -0x4480 /**< The random generator failed to generate non-zeros. */
- #define MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION -0x4500 /**< The implementation does not offer the requested operation, for example, because of security violations or lack of functionality. */
- #define MBEDTLS_ERR_RSA_HW_ACCEL_FAILED -0x4580 /**< RSA hardware accelerator failed. */
- /*
- * RSA constants
- */
- #define MBEDTLS_RSA_PUBLIC 0 /**< Request private key operation. */
- #define MBEDTLS_RSA_PRIVATE 1 /**< Request public key operation. */
- #define MBEDTLS_RSA_PKCS_V15 0 /**< Use PKCS-1 v1.5 encoding. */
- #define MBEDTLS_RSA_PKCS_V21 1 /**< Use PKCS-1 v2.1 encoding. */
- #define MBEDTLS_RSA_SIGN 1 /**< Identifier for RSA signature operations. */
- #define MBEDTLS_RSA_CRYPT 2 /**< Identifier for RSA encryption and decryption operations. */
- #define MBEDTLS_RSA_SALT_LEN_ANY -1
- /*
- * The above constants may be used even if the RSA module is compile out,
- * eg for alternative (PKCS#11) RSA implemenations in the PK layers.
- */
- #if !defined(MBEDTLS_RSA_ALT)
- // Regular implementation
- //
- #ifdef __cplusplus
- extern "C" {
- #endif
- /**
- * \brief The RSA context structure.
- *
- * \note Direct manipulation of the members of this structure
- * is deprecated. All manipulation should instead be done through
- * the public interface functions.
- */
- typedef struct
- {
- int ver; /*!< Always 0.*/
- size_t len; /*!< The size of \p N in Bytes. */
- mbedtls_mpi N; /*!< The public modulus. */
- mbedtls_mpi E; /*!< The public exponent. */
- mbedtls_mpi D; /*!< The private exponent. */
- mbedtls_mpi P; /*!< The first prime factor. */
- mbedtls_mpi Q; /*!< The second prime factor. */
- mbedtls_mpi DP; /*!< \p D % (P - 1) */
- mbedtls_mpi DQ; /*!< \p D % (Q - 1) */
- mbedtls_mpi QP; /*!< 1 / (Q % P) */
- mbedtls_mpi RN; /*!< cached R^2 mod \p N */
- mbedtls_mpi RP; /*!< cached R^2 mod \p P */
- mbedtls_mpi RQ; /*!< cached R^2 mod \p Q */
- mbedtls_mpi Vi; /*!< The cached blinding value. */
- mbedtls_mpi Vf; /*!< The cached un-blinding value. */
- int padding; /*!< Selects padding mode:
- #MBEDTLS_RSA_PKCS_V15 for 1.5 padding and
- #MBEDTLS_RSA_PKCS_V21 for OAEP or PSS. */
- int hash_id; /*!< Hash identifier of mbedtls_md_type_t type,
- as specified in md.h for use in the MGF
- mask generating function used in the
- EME-OAEP and EMSA-PSS encodings. */
- #if defined(MBEDTLS_THREADING_C)
- mbedtls_threading_mutex_t mutex; /*!< Thread-safety mutex. */
- #endif
- }
- mbedtls_rsa_context;
- /**
- * \brief This function initializes an RSA context.
- *
- * \note Set padding to #MBEDTLS_RSA_PKCS_V21 for the RSAES-OAEP
- * encryption scheme and the RSASSA-PSS signature scheme.
- *
- * \param ctx The RSA context to initialize.
- * \param padding Selects padding mode: #MBEDTLS_RSA_PKCS_V15 or
- * #MBEDTLS_RSA_PKCS_V21.
- * \param hash_id The hash identifier of #mbedtls_md_type_t type, if
- * \p padding is #MBEDTLS_RSA_PKCS_V21.
- *
- * \note The \p hash_id parameter is ignored when using
- * #MBEDTLS_RSA_PKCS_V15 padding.
- *
- * \note The choice of padding mode is strictly enforced for private key
- * operations, since there might be security concerns in
- * mixing padding modes. For public key operations it is
- * a default value, which can be overriden by calling specific
- * \c rsa_rsaes_xxx or \c rsa_rsassa_xxx functions.
- *
- * \note The hash selected in \p hash_id is always used for OEAP
- * encryption. For PSS signatures, it is always used for
- * making signatures, but can be overriden for verifying them.
- * If set to #MBEDTLS_MD_NONE, it is always overriden.
- */
- void mbedtls_rsa_init( mbedtls_rsa_context *ctx,
- int padding,
- int hash_id);
- /**
- * \brief This function imports a set of core parameters into an
- * RSA context.
- *
- * \param ctx The initialized RSA context to store the parameters in.
- * \param N The RSA modulus, or NULL.
- * \param P The first prime factor of \p N, or NULL.
- * \param Q The second prime factor of \p N, or NULL.
- * \param D The private exponent, or NULL.
- * \param E The public exponent, or NULL.
- *
- * \note This function can be called multiple times for successive
- * imports, if the parameters are not simultaneously present.
- *
- * Any sequence of calls to this function should be followed
- * by a call to mbedtls_rsa_complete(), which checks and
- * completes the provided information to a ready-for-use
- * public or private RSA key.
- *
- * \note See mbedtls_rsa_complete() for more information on which
- * parameters are necessary to set up a private or public
- * RSA key.
- *
- * \note The imported parameters are copied and need not be preserved
- * for the lifetime of the RSA context being set up.
- *
- * \return \c 0 on success, or a non-zero error code on failure.
- */
- int mbedtls_rsa_import( mbedtls_rsa_context *ctx,
- const mbedtls_mpi *N,
- const mbedtls_mpi *P, const mbedtls_mpi *Q,
- const mbedtls_mpi *D, const mbedtls_mpi *E );
- /**
- * \brief This function imports core RSA parameters, in raw big-endian
- * binary format, into an RSA context.
- *
- * \param ctx The initialized RSA context to store the parameters in.
- * \param N The RSA modulus, or NULL.
- * \param N_len The Byte length of \p N, ignored if \p N == NULL.
- * \param P The first prime factor of \p N, or NULL.
- * \param P_len The Byte length of \p P, ignored if \p P == NULL.
- * \param Q The second prime factor of \p N, or NULL.
- * \param Q_len The Byte length of \p Q, ignored if \p Q == NULL.
- * \param D The private exponent, or NULL.
- * \param D_len The Byte length of \p D, ignored if \p D == NULL.
- * \param E The public exponent, or NULL.
- * \param E_len The Byte length of \p E, ignored if \p E == NULL.
- *
- * \note This function can be called multiple times for successive
- * imports, if the parameters are not simultaneously present.
- *
- * Any sequence of calls to this function should be followed
- * by a call to mbedtls_rsa_complete(), which checks and
- * completes the provided information to a ready-for-use
- * public or private RSA key.
- *
- * \note See mbedtls_rsa_complete() for more information on which
- * parameters are necessary to set up a private or public
- * RSA key.
- *
- * \note The imported parameters are copied and need not be preserved
- * for the lifetime of the RSA context being set up.
- *
- * \return \c 0 on success, or a non-zero error code on failure.
- */
- int mbedtls_rsa_import_raw( mbedtls_rsa_context *ctx,
- unsigned char const *N, size_t N_len,
- unsigned char const *P, size_t P_len,
- unsigned char const *Q, size_t Q_len,
- unsigned char const *D, size_t D_len,
- unsigned char const *E, size_t E_len );
- /**
- * \brief This function completes an RSA context from
- * a set of imported core parameters.
- *
- * To setup an RSA public key, precisely \p N and \p E
- * must have been imported.
- *
- * To setup an RSA private key, sufficient information must
- * be present for the other parameters to be derivable.
- *
- * The default implementation supports the following:
- * <ul><li>Derive \p P, \p Q from \p N, \p D, \p E.</li>
- * <li>Derive \p N, \p D from \p P, \p Q, \p E.</li></ul>
- * Alternative implementations need not support these.
- *
- * If this function runs successfully, it guarantees that
- * the RSA context can be used for RSA operations without
- * the risk of failure or crash.
- *
- * \param ctx The initialized RSA context holding imported parameters.
- *
- * \return \c 0 on success, or #MBEDTLS_ERR_RSA_BAD_INPUT_DATA if the
- * attempted derivations failed.
- *
- * \warning This function need not perform consistency checks
- * for the imported parameters. In particular, parameters that
- * are not needed by the implementation might be silently
- * discarded and left unchecked. To check the consistency
- * of the key material, see mbedtls_rsa_check_privkey().
- *
- */
- int mbedtls_rsa_complete( mbedtls_rsa_context *ctx );
- /**
- * \brief This function exports the core parameters of an RSA key.
- *
- * If this function runs successfully, the non-NULL buffers
- * pointed to by \p N, \p P, \p Q, \p D, and \p E are fully
- * written, with additional unused space filled leading by
- * zero Bytes.
- *
- * Possible reasons for returning
- * #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION:<ul>
- * <li>An alternative RSA implementation is in use, which
- * stores the key externally, and either cannot or should
- * not export it into RAM.</li>
- * <li>A SW or HW implementation might not support a certain
- * deduction. For example, \p P, \p Q from \p N, \p D,
- * and \p E if the former are not part of the
- * implementation.</li></ul>
- *
- * If the function fails due to an unsupported operation,
- * the RSA context stays intact and remains usable.
- *
- * \param ctx The initialized RSA context.
- * \param N The MPI to hold the RSA modulus, or NULL.
- * \param P The MPI to hold the first prime factor of \p N, or NULL.
- * \param Q The MPI to hold the second prime factor of \p N, or NULL.
- * \param D The MPI to hold the private exponent, or NULL.
- * \param E The MPI to hold the public exponent, or NULL.
- *
- * \return \c 0 on success,
- * #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION if exporting the
- * requested parameters cannot be done due to missing
- * functionality or because of security policies,
- * or a non-zero return code on any other failure.
- *
- */
- int mbedtls_rsa_export( const mbedtls_rsa_context *ctx,
- mbedtls_mpi *N, mbedtls_mpi *P, mbedtls_mpi *Q,
- mbedtls_mpi *D, mbedtls_mpi *E );
- /**
- * \brief This function exports core parameters of an RSA key
- * in raw big-endian binary format.
- *
- * If this function runs successfully, the non-NULL buffers
- * pointed to by \p N, \p P, \p Q, \p D, and \p E are fully
- * written, with additional unused space filled leading by
- * zero Bytes.
- *
- * Possible reasons for returning
- * #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION:<ul>
- * <li>An alternative RSA implementation is in use, which
- * stores the key externally, and either cannot or should
- * not export it into RAM.</li>
- * <li>A SW or HW implementation might not support a certain
- * deduction. For example, \p P, \p Q from \p N, \p D,
- * and \p E if the former are not part of the
- * implementation.</li></ul>
- * If the function fails due to an unsupported operation,
- * the RSA context stays intact and remains usable.
- *
- * \param ctx The initialized RSA context.
- * \param N The Byte array to store the RSA modulus, or NULL.
- * \param N_len The size of the buffer for the modulus.
- * \param P The Byte array to hold the first prime factor of \p N, or
- * NULL.
- * \param P_len The size of the buffer for the first prime factor.
- * \param Q The Byte array to hold the second prime factor of \p N, or
- NULL.
- * \param Q_len The size of the buffer for the second prime factor.
- * \param D The Byte array to hold the private exponent, or NULL.
- * \param D_len The size of the buffer for the private exponent.
- * \param E The Byte array to hold the public exponent, or NULL.
- * \param E_len The size of the buffer for the public exponent.
- *
- * \note The length fields are ignored if the corresponding
- * buffer pointers are NULL.
- *
- * \return \c 0 on success,
- * #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION if exporting the
- * requested parameters cannot be done due to missing
- * functionality or because of security policies,
- * or a non-zero return code on any other failure.
- */
- int mbedtls_rsa_export_raw( const mbedtls_rsa_context *ctx,
- unsigned char *N, size_t N_len,
- unsigned char *P, size_t P_len,
- unsigned char *Q, size_t Q_len,
- unsigned char *D, size_t D_len,
- unsigned char *E, size_t E_len );
- /**
- * \brief This function exports CRT parameters of a private RSA key.
- *
- * \param ctx The initialized RSA context.
- * \param DP The MPI to hold D modulo P-1, or NULL.
- * \param DQ The MPI to hold D modulo Q-1, or NULL.
- * \param QP The MPI to hold modular inverse of Q modulo P, or NULL.
- *
- * \return \c 0 on success, non-zero error code otherwise.
- *
- * \note Alternative RSA implementations not using CRT-parameters
- * internally can implement this function based on
- * mbedtls_rsa_deduce_opt().
- *
- */
- int mbedtls_rsa_export_crt( const mbedtls_rsa_context *ctx,
- mbedtls_mpi *DP, mbedtls_mpi *DQ, mbedtls_mpi *QP );
- /**
- * \brief This function sets padding for an already initialized RSA
- * context. See mbedtls_rsa_init() for details.
- *
- * \param ctx The RSA context to be set.
- * \param padding Selects padding mode: #MBEDTLS_RSA_PKCS_V15 or
- * #MBEDTLS_RSA_PKCS_V21.
- * \param hash_id The #MBEDTLS_RSA_PKCS_V21 hash identifier.
- */
- void mbedtls_rsa_set_padding( mbedtls_rsa_context *ctx, int padding,
- int hash_id);
- /**
- * \brief This function retrieves the length of RSA modulus in Bytes.
- *
- * \param ctx The initialized RSA context.
- *
- * \return The length of the RSA modulus in Bytes.
- *
- */
- size_t mbedtls_rsa_get_len( const mbedtls_rsa_context *ctx );
- /**
- * \brief This function generates an RSA keypair.
- *
- * \param ctx The RSA context used to hold the key.
- * \param f_rng The RNG function.
- * \param p_rng The RNG parameter.
- * \param nbits The size of the public key in bits.
- * \param exponent The public exponent. For example, 65537.
- *
- * \note mbedtls_rsa_init() must be called before this function,
- * to set up the RSA context.
- *
- * \return \c 0 on success, or an \c MBEDTLS_ERR_RSA_XXX error code
- on failure.
- */
- int mbedtls_rsa_gen_key( mbedtls_rsa_context *ctx,
- int (*f_rng)(void *, unsigned char *, size_t),
- void *p_rng,
- unsigned int nbits, int exponent );
- /**
- * \brief This function checks if a context contains at least an RSA
- * public key.
- *
- * If the function runs successfully, it is guaranteed that
- * enough information is present to perform an RSA public key
- * operation using mbedtls_rsa_public().
- *
- * \param ctx The RSA context to check.
- *
- * \return \c 0 on success, or an \c MBEDTLS_ERR_RSA_XXX error code
- * on failure.
- *
- */
- int mbedtls_rsa_check_pubkey( const mbedtls_rsa_context *ctx );
- /**
- * \brief This function checks if a context contains an RSA private key
- * and perform basic consistency checks.
- *
- * \param ctx The RSA context to check.
- *
- * \return \c 0 on success, or an \c MBEDTLS_ERR_RSA_XXX error code on
- * failure.
- *
- * \note The consistency checks performed by this function not only
- * ensure that mbedtls_rsa_private() can be called successfully
- * on the given context, but that the various parameters are
- * mutually consistent with high probability, in the sense that
- * mbedtls_rsa_public() and mbedtls_rsa_private() are inverses.
- *
- * \warning This function should catch accidental misconfigurations
- * like swapping of parameters, but it cannot establish full
- * trust in neither the quality nor the consistency of the key
- * material that was used to setup the given RSA context:
- * <ul><li>Consistency: Imported parameters that are irrelevant
- * for the implementation might be silently dropped. If dropped,
- * the current function does not have access to them,
- * and therefore cannot check them. See mbedtls_rsa_complete().
- * If you want to check the consistency of the entire
- * content of an PKCS1-encoded RSA private key, for example, you
- * should use mbedtls_rsa_validate_params() before setting
- * up the RSA context.
- * Additionally, if the implementation performs empirical checks,
- * these checks substantiate but do not guarantee consistency.</li>
- * <li>Quality: This function is not expected to perform
- * extended quality assessments like checking that the prime
- * factors are safe. Additionally, it is the responsibility of the
- * user to ensure the trustworthiness of the source of his RSA
- * parameters, which goes beyond what is effectively checkable
- * by the library.</li></ul>
- */
- int mbedtls_rsa_check_privkey( const mbedtls_rsa_context *ctx );
- /**
- * \brief This function checks a public-private RSA key pair.
- *
- * It checks each of the contexts, and makes sure they match.
- *
- * \param pub The RSA context holding the public key.
- * \param prv The RSA context holding the private key.
- *
- * \return \c 0 on success, or an \c MBEDTLS_ERR_RSA_XXX error code
- * on failure.
- */
- int mbedtls_rsa_check_pub_priv( const mbedtls_rsa_context *pub,
- const mbedtls_rsa_context *prv );
- /**
- * \brief This function performs an RSA public key operation.
- *
- * \param ctx The RSA context.
- * \param input The input buffer.
- * \param output The output buffer.
- *
- * \return \c 0 on success, or an \c MBEDTLS_ERR_RSA_XXX error code
- * on failure.
- *
- * \note This function does not handle message padding.
- *
- * \note Make sure to set \p input[0] = 0 or ensure that
- * input is smaller than \p N.
- *
- * \note The input and output buffers must be large
- * enough. For example, 128 Bytes if RSA-1024 is used.
- */
- int mbedtls_rsa_public( mbedtls_rsa_context *ctx,
- const unsigned char *input,
- unsigned char *output );
- /**
- * \brief This function performs an RSA private key operation.
- *
- * \param ctx The RSA context.
- * \param f_rng The RNG function. Needed for blinding.
- * \param p_rng The RNG parameter.
- * \param input The input buffer.
- * \param output The output buffer.
- *
- * \return \c 0 on success, or an \c MBEDTLS_ERR_RSA_XXX error code
- * on failure.
- *
- * \note The input and output buffers must be large
- * enough. For example, 128 Bytes if RSA-1024 is used.
- *
- * \note Blinding is used if and only if a PRNG is provided.
- *
- * \note If blinding is used, both the base of exponentation
- * and the exponent are blinded, providing protection
- * against some side-channel attacks.
- *
- * \warning It is deprecated and a security risk to not provide
- * a PRNG here and thereby prevent the use of blinding.
- * Future versions of the library may enforce the presence
- * of a PRNG.
- *
- */
- int mbedtls_rsa_private( mbedtls_rsa_context *ctx,
- int (*f_rng)(void *, unsigned char *, size_t),
- void *p_rng,
- const unsigned char *input,
- unsigned char *output );
- /**
- * \brief This function adds the message padding, then performs an RSA
- * operation.
- *
- * It is the generic wrapper for performing a PKCS#1 encryption
- * operation using the \p mode from the context.
- *
- *
- * \param ctx The RSA context.
- * \param f_rng The RNG function. Needed for padding, PKCS#1 v2.1
- * encoding, and #MBEDTLS_RSA_PRIVATE.
- * \param p_rng The RNG parameter.
- * \param mode #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE.
- * \param ilen The length of the plaintext.
- * \param input The buffer holding the data to encrypt.
- * \param output The buffer used to hold the ciphertext.
- *
- * \deprecated It is deprecated and discouraged to call this function
- * in #MBEDTLS_RSA_PRIVATE mode. Future versions of the library
- * are likely to remove the \p mode argument and have it
- * implicitly set to #MBEDTLS_RSA_PUBLIC.
- *
- * \note Alternative implementations of RSA need not support
- * mode being set to #MBEDTLS_RSA_PRIVATE and might instead
- * return #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION.
- *
- * \return \c 0 on success, or an \c MBEDTLS_ERR_RSA_XXX error code
- * on failure.
- *
- * \note The input and output buffers must be as large as the size
- * of \p ctx->N. For example, 128 Bytes if RSA-1024 is used.
- */
- int mbedtls_rsa_pkcs1_encrypt( mbedtls_rsa_context *ctx,
- int (*f_rng)(void *, unsigned char *, size_t),
- void *p_rng,
- int mode, size_t ilen,
- const unsigned char *input,
- unsigned char *output );
- /**
- * \brief This function performs a PKCS#1 v1.5 encryption operation
- * (RSAES-PKCS1-v1_5-ENCRYPT).
- *
- * \param ctx The RSA context.
- * \param f_rng The RNG function. Needed for padding and
- * #MBEDTLS_RSA_PRIVATE.
- * \param p_rng The RNG parameter.
- * \param mode #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE.
- * \param ilen The length of the plaintext.
- * \param input The buffer holding the data to encrypt.
- * \param output The buffer used to hold the ciphertext.
- *
- * \deprecated It is deprecated and discouraged to call this function
- * in #MBEDTLS_RSA_PRIVATE mode. Future versions of the library
- * are likely to remove the \p mode argument and have it
- * implicitly set to #MBEDTLS_RSA_PUBLIC.
- *
- * \note Alternative implementations of RSA need not support
- * mode being set to #MBEDTLS_RSA_PRIVATE and might instead
- * return #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION.
- *
- * \return \c 0 on success, or an \c MBEDTLS_ERR_RSA_XXX error code
- * on failure.
- *
- * \note The output buffer must be as large as the size
- * of \p ctx->N. For example, 128 Bytes if RSA-1024 is used.
- */
- int mbedtls_rsa_rsaes_pkcs1_v15_encrypt( mbedtls_rsa_context *ctx,
- int (*f_rng)(void *, unsigned char *, size_t),
- void *p_rng,
- int mode, size_t ilen,
- const unsigned char *input,
- unsigned char *output );
- /**
- * \brief This function performs a PKCS#1 v2.1 OAEP encryption
- * operation (RSAES-OAEP-ENCRYPT).
- *
- * \param ctx The RSA context.
- * \param f_rng The RNG function. Needed for padding and PKCS#1 v2.1
- * encoding and #MBEDTLS_RSA_PRIVATE.
- * \param p_rng The RNG parameter.
- * \param mode #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE.
- * \param label The buffer holding the custom label to use.
- * \param label_len The length of the label.
- * \param ilen The length of the plaintext.
- * \param input The buffer holding the data to encrypt.
- * \param output The buffer used to hold the ciphertext.
- *
- * \deprecated It is deprecated and discouraged to call this function
- * in #MBEDTLS_RSA_PRIVATE mode. Future versions of the library
- * are likely to remove the \p mode argument and have it
- * implicitly set to #MBEDTLS_RSA_PUBLIC.
- *
- * \note Alternative implementations of RSA need not support
- * mode being set to #MBEDTLS_RSA_PRIVATE and might instead
- * return #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION.
- *
- * \return \c 0 on success, or an \c MBEDTLS_ERR_RSA_XXX error code
- * on failure.
- *
- * \note The output buffer must be as large as the size
- * of ctx->N. For example, 128 Bytes if RSA-1024 is used.
- */
- int mbedtls_rsa_rsaes_oaep_encrypt( mbedtls_rsa_context *ctx,
- int (*f_rng)(void *, unsigned char *, size_t),
- void *p_rng,
- int mode,
- const unsigned char *label, size_t label_len,
- size_t ilen,
- const unsigned char *input,
- unsigned char *output );
- /**
- * \brief This function performs an RSA operation, then removes the
- * message padding.
- *
- * It is the generic wrapper for performing a PKCS#1 decryption
- * operation using the \p mode from the context.
- *
- * \param ctx The RSA context.
- * \param f_rng The RNG function. Only needed for #MBEDTLS_RSA_PRIVATE.
- * \param p_rng The RNG parameter.
- * \param mode #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE.
- * \param olen The length of the plaintext.
- * \param input The buffer holding the encrypted data.
- * \param output The buffer used to hold the plaintext.
- * \param output_max_len The maximum length of the output buffer.
- *
- * \deprecated It is deprecated and discouraged to call this function
- * in #MBEDTLS_RSA_PUBLIC mode. Future versions of the library
- * are likely to remove the \p mode argument and have it
- * implicitly set to #MBEDTLS_RSA_PRIVATE.
- *
- * \note Alternative implementations of RSA need not support
- * mode being set to #MBEDTLS_RSA_PUBLIC and might instead
- * return #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION.
- *
- * \return \c 0 on success, or an \c MBEDTLS_ERR_RSA_XXX error code
- * on failure.
- *
- * \note The output buffer length \c output_max_len should be
- * as large as the size \p ctx->len of \p ctx->N (for example,
- * 128 Bytes if RSA-1024 is used) to be able to hold an
- * arbitrary decrypted message. If it is not large enough to
- * hold the decryption of the particular ciphertext provided,
- * the function returns \c MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE.
- *
- * \note The input buffer must be as large as the size
- * of \p ctx->N. For example, 128 Bytes if RSA-1024 is used.
- */
- int mbedtls_rsa_pkcs1_decrypt( mbedtls_rsa_context *ctx,
- int (*f_rng)(void *, unsigned char *, size_t),
- void *p_rng,
- int mode, size_t *olen,
- const unsigned char *input,
- unsigned char *output,
- size_t output_max_len );
- /**
- * \brief This function performs a PKCS#1 v1.5 decryption
- * operation (RSAES-PKCS1-v1_5-DECRYPT).
- *
- * \param ctx The RSA context.
- * \param f_rng The RNG function. Only needed for #MBEDTLS_RSA_PRIVATE.
- * \param p_rng The RNG parameter.
- * \param mode #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE.
- * \param olen The length of the plaintext.
- * \param input The buffer holding the encrypted data.
- * \param output The buffer to hold the plaintext.
- * \param output_max_len The maximum length of the output buffer.
- *
- * \deprecated It is deprecated and discouraged to call this function
- * in #MBEDTLS_RSA_PUBLIC mode. Future versions of the library
- * are likely to remove the \p mode argument and have it
- * implicitly set to #MBEDTLS_RSA_PRIVATE.
- *
- * \note Alternative implementations of RSA need not support
- * mode being set to #MBEDTLS_RSA_PUBLIC and might instead
- * return #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION.
- *
- * \return \c 0 on success, or an \c MBEDTLS_ERR_RSA_XXX error code
- * on failure.
- *
- * \note The output buffer length \c output_max_len should be
- * as large as the size \p ctx->len of \p ctx->N, for example,
- * 128 Bytes if RSA-1024 is used, to be able to hold an
- * arbitrary decrypted message. If it is not large enough to
- * hold the decryption of the particular ciphertext provided,
- * the function returns #MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE.
- *
- * \note The input buffer must be as large as the size
- * of \p ctx->N. For example, 128 Bytes if RSA-1024 is used.
- */
- int mbedtls_rsa_rsaes_pkcs1_v15_decrypt( mbedtls_rsa_context *ctx,
- int (*f_rng)(void *, unsigned char *, size_t),
- void *p_rng,
- int mode, size_t *olen,
- const unsigned char *input,
- unsigned char *output,
- size_t output_max_len );
- /**
- * \brief This function performs a PKCS#1 v2.1 OAEP decryption
- * operation (RSAES-OAEP-DECRYPT).
- *
- * \param ctx The RSA context.
- * \param f_rng The RNG function. Only needed for #MBEDTLS_RSA_PRIVATE.
- * \param p_rng The RNG parameter.
- * \param mode #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE.
- * \param label The buffer holding the custom label to use.
- * \param label_len The length of the label.
- * \param olen The length of the plaintext.
- * \param input The buffer holding the encrypted data.
- * \param output The buffer to hold the plaintext.
- * \param output_max_len The maximum length of the output buffer.
- *
- * \deprecated It is deprecated and discouraged to call this function
- * in #MBEDTLS_RSA_PUBLIC mode. Future versions of the library
- * are likely to remove the \p mode argument and have it
- * implicitly set to #MBEDTLS_RSA_PRIVATE.
- *
- * \note Alternative implementations of RSA need not support
- * mode being set to #MBEDTLS_RSA_PUBLIC and might instead
- * return #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION.
- *
- * \return \c 0 on success, or an \c MBEDTLS_ERR_RSA_XXX error code
- * on failure.
- *
- * \note The output buffer length \c output_max_len should be
- * as large as the size \p ctx->len of \p ctx->N, for
- * example, 128 Bytes if RSA-1024 is used, to be able to
- * hold an arbitrary decrypted message. If it is not
- * large enough to hold the decryption of the particular
- * ciphertext provided, the function returns
- * #MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE.
- *
- * \note The input buffer must be as large as the size
- * of \p ctx->N. For example, 128 Bytes if RSA-1024 is used.
- */
- int mbedtls_rsa_rsaes_oaep_decrypt( mbedtls_rsa_context *ctx,
- int (*f_rng)(void *, unsigned char *, size_t),
- void *p_rng,
- int mode,
- const unsigned char *label, size_t label_len,
- size_t *olen,
- const unsigned char *input,
- unsigned char *output,
- size_t output_max_len );
- /**
- * \brief This function performs a private RSA operation to sign
- * a message digest using PKCS#1.
- *
- * It is the generic wrapper for performing a PKCS#1
- * signature using the \p mode from the context.
- *
- * \param ctx The RSA context.
- * \param f_rng The RNG function. Needed for PKCS#1 v2.1 encoding and for
- * #MBEDTLS_RSA_PRIVATE.
- * \param p_rng The RNG parameter.
- * \param mode #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE.
- * \param md_alg The message-digest algorithm used to hash the original data.
- * Use #MBEDTLS_MD_NONE for signing raw data.
- * \param hashlen The length of the message digest. Only used if \p md_alg is #MBEDTLS_MD_NONE.
- * \param hash The buffer holding the message digest.
- * \param sig The buffer to hold the ciphertext.
- *
- * \deprecated It is deprecated and discouraged to call this function
- * in #MBEDTLS_RSA_PUBLIC mode. Future versions of the library
- * are likely to remove the \p mode argument and have it
- * implicitly set to #MBEDTLS_RSA_PRIVATE.
- *
- * \note Alternative implementations of RSA need not support
- * mode being set to #MBEDTLS_RSA_PUBLIC and might instead
- * return #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION.
- *
- * \return \c 0 if the signing operation was successful,
- * or an \c MBEDTLS_ERR_RSA_XXX error code on failure.
- *
- * \note The \p sig buffer must be as large as the size
- * of \p ctx->N. For example, 128 Bytes if RSA-1024 is used.
- *
- * \note For PKCS#1 v2.1 encoding, see comments on
- * mbedtls_rsa_rsassa_pss_sign() for details on
- * \p md_alg and \p hash_id.
- */
- int mbedtls_rsa_pkcs1_sign( mbedtls_rsa_context *ctx,
- int (*f_rng)(void *, unsigned char *, size_t),
- void *p_rng,
- int mode,
- mbedtls_md_type_t md_alg,
- unsigned int hashlen,
- const unsigned char *hash,
- unsigned char *sig );
- /**
- * \brief This function performs a PKCS#1 v1.5 signature
- * operation (RSASSA-PKCS1-v1_5-SIGN).
- *
- * \param ctx The RSA context.
- * \param f_rng The RNG function. Only needed for #MBEDTLS_RSA_PRIVATE.
- * \param p_rng The RNG parameter.
- * \param mode #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE.
- * \param md_alg The message-digest algorithm used to hash the original data.
- * Use #MBEDTLS_MD_NONE for signing raw data.
- * \param hashlen The length of the message digest. Only used if \p md_alg is #MBEDTLS_MD_NONE.
- * \param hash The buffer holding the message digest.
- * \param sig The buffer to hold the ciphertext.
- *
- * \deprecated It is deprecated and discouraged to call this function
- * in #MBEDTLS_RSA_PUBLIC mode. Future versions of the library
- * are likely to remove the \p mode argument and have it
- * implicitly set to #MBEDTLS_RSA_PRIVATE.
- *
- * \note Alternative implementations of RSA need not support
- * mode being set to #MBEDTLS_RSA_PUBLIC and might instead
- * return #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION.
- *
- * \return \c 0 if the signing operation was successful,
- * or an \c MBEDTLS_ERR_RSA_XXX error code
- * on failure.
- *
- * \note The \p sig buffer must be as large as the size
- * of \p ctx->N. For example, 128 Bytes if RSA-1024 is used.
- */
- int mbedtls_rsa_rsassa_pkcs1_v15_sign( mbedtls_rsa_context *ctx,
- int (*f_rng)(void *, unsigned char *, size_t),
- void *p_rng,
- int mode,
- mbedtls_md_type_t md_alg,
- unsigned int hashlen,
- const unsigned char *hash,
- unsigned char *sig );
- /**
- * \brief This function performs a PKCS#1 v2.1 PSS signature
- * operation (RSASSA-PSS-SIGN).
- *
- * \param ctx The RSA context.
- * \param f_rng The RNG function. Needed for PKCS#1 v2.1 encoding and for
- * #MBEDTLS_RSA_PRIVATE.
- * \param p_rng The RNG parameter.
- * \param mode #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE.
- * \param md_alg The message-digest algorithm used to hash the original data.
- * Use #MBEDTLS_MD_NONE for signing raw data.
- * \param hashlen The length of the message digest. Only used if \p md_alg is #MBEDTLS_MD_NONE.
- * \param hash The buffer holding the message digest.
- * \param sig The buffer to hold the ciphertext.
- *
- * \deprecated It is deprecated and discouraged to call this function
- * in #MBEDTLS_RSA_PUBLIC mode. Future versions of the library
- * are likely to remove the \p mode argument and have it
- * implicitly set to #MBEDTLS_RSA_PRIVATE.
- *
- * \note Alternative implementations of RSA need not support
- * mode being set to #MBEDTLS_RSA_PUBLIC and might instead
- * return #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION.
- *
- * \return \c 0 if the signing operation was successful,
- * or an \c MBEDTLS_ERR_RSA_XXX error code
- * on failure.
- *
- * \note The \p sig buffer must be as large as the size
- * of \p ctx->N. For example, 128 Bytes if RSA-1024 is used.
- *
- * \note The \p hash_id in the RSA context is the one used for the
- * encoding. \p md_alg in the function call is the type of hash
- * that is encoded. According to <em>RFC-3447: Public-Key
- * Cryptography Standards (PKCS) #1 v2.1: RSA Cryptography
- * Specifications</em> it is advised to keep both hashes the
- * same.
- */
- int mbedtls_rsa_rsassa_pss_sign( mbedtls_rsa_context *ctx,
- int (*f_rng)(void *, unsigned char *, size_t),
- void *p_rng,
- int mode,
- mbedtls_md_type_t md_alg,
- unsigned int hashlen,
- const unsigned char *hash,
- unsigned char *sig );
- /**
- * \brief This function performs a public RSA operation and checks
- * the message digest.
- *
- * This is the generic wrapper for performing a PKCS#1
- * verification using the mode from the context.
- *
- * \param ctx The RSA public key context.
- * \param f_rng The RNG function. Only needed for #MBEDTLS_RSA_PRIVATE.
- * \param p_rng The RNG parameter.
- * \param mode #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE.
- * \param md_alg The message-digest algorithm used to hash the original data.
- * Use #MBEDTLS_MD_NONE for signing raw data.
- * \param hashlen The length of the message digest. Only used if \p md_alg is #MBEDTLS_MD_NONE.
- * \param hash The buffer holding the message digest.
- * \param sig The buffer holding the ciphertext.
- *
- * \deprecated It is deprecated and discouraged to call this function
- * in #MBEDTLS_RSA_PRIVATE mode. Future versions of the library
- * are likely to remove the \p mode argument and have it
- * set to #MBEDTLS_RSA_PUBLIC.
- *
- * \note Alternative implementations of RSA need not support
- * mode being set to #MBEDTLS_RSA_PRIVATE and might instead
- * return #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION.
- *
- * \return \c 0 if the verify operation was successful,
- * or an \c MBEDTLS_ERR_RSA_XXX error code
- * on failure.
- *
- * \note The \p sig buffer must be as large as the size
- * of \p ctx->N. For example, 128 Bytes if RSA-1024 is used.
- *
- * \note For PKCS#1 v2.1 encoding, see comments on
- * mbedtls_rsa_rsassa_pss_verify() about \p md_alg and
- * \p hash_id.
- */
- int mbedtls_rsa_pkcs1_verify( mbedtls_rsa_context *ctx,
- int (*f_rng)(void *, unsigned char *, size_t),
- void *p_rng,
- int mode,
- mbedtls_md_type_t md_alg,
- unsigned int hashlen,
- const unsigned char *hash,
- const unsigned char *sig );
- /**
- * \brief This function performs a PKCS#1 v1.5 verification
- * operation (RSASSA-PKCS1-v1_5-VERIFY).
- *
- * \param ctx The RSA public key context.
- * \param f_rng The RNG function. Only needed for #MBEDTLS_RSA_PRIVATE.
- * \param p_rng The RNG parameter.
- * \param mode #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE.
- * \param md_alg The message-digest algorithm used to hash the original data.
- * Use #MBEDTLS_MD_NONE for signing raw data.
- * \param hashlen The length of the message digest. Only used if \p md_alg is #MBEDTLS_MD_NONE.
- * \param hash The buffer holding the message digest.
- * \param sig The buffer holding the ciphertext.
- *
- * \deprecated It is deprecated and discouraged to call this function
- * in #MBEDTLS_RSA_PRIVATE mode. Future versions of the library
- * are likely to remove the \p mode argument and have it
- * set to #MBEDTLS_RSA_PUBLIC.
- *
- * \note Alternative implementations of RSA need not support
- * mode being set to #MBEDTLS_RSA_PRIVATE and might instead
- * return #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION.
- *
- * \return \c 0 if the verify operation was successful,
- * or an \c MBEDTLS_ERR_RSA_XXX error code
- * on failure.
- *
- * \note The \p sig buffer must be as large as the size
- * of \p ctx->N. For example, 128 Bytes if RSA-1024 is used.
- */
- int mbedtls_rsa_rsassa_pkcs1_v15_verify( mbedtls_rsa_context *ctx,
- int (*f_rng)(void *, unsigned char *, size_t),
- void *p_rng,
- int mode,
- mbedtls_md_type_t md_alg,
- unsigned int hashlen,
- const unsigned char *hash,
- const unsigned char *sig );
- /**
- * \brief This function performs a PKCS#1 v2.1 PSS verification
- * operation (RSASSA-PSS-VERIFY).
- *
- * The hash function for the MGF mask generating function
- * is that specified in the RSA context.
- *
- * \param ctx The RSA public key context.
- * \param f_rng The RNG function. Only needed for #MBEDTLS_RSA_PRIVATE.
- * \param p_rng The RNG parameter.
- * \param mode #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE.
- * \param md_alg The message-digest algorithm used to hash the original data.
- * Use #MBEDTLS_MD_NONE for signing raw data.
- * \param hashlen The length of the message digest. Only used if \p md_alg is #MBEDTLS_MD_NONE.
- * \param hash The buffer holding the message digest.
- * \param sig The buffer holding the ciphertext.
- *
- * \deprecated It is deprecated and discouraged to call this function
- * in #MBEDTLS_RSA_PRIVATE mode. Future versions of the library
- * are likely to remove the \p mode argument and have it
- * implicitly set to #MBEDTLS_RSA_PUBLIC.
- *
- * \note Alternative implementations of RSA need not support
- * mode being set to #MBEDTLS_RSA_PRIVATE and might instead
- * return #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION.
- *
- * \return \c 0 if the verify operation was successful,
- * or an \c MBEDTLS_ERR_RSA_XXX error code
- * on failure.
- *
- * \note The \p sig buffer must be as large as the size
- * of \p ctx->N. For example, 128 Bytes if RSA-1024 is used.
- *
- * \note The \p hash_id in the RSA context is the one used for the
- * verification. \p md_alg in the function call is the type of
- * hash that is verified. According to <em>RFC-3447: Public-Key
- * Cryptography Standards (PKCS) #1 v2.1: RSA Cryptography
- * Specifications</em> it is advised to keep both hashes the
- * same. If \p hash_id in the RSA context is unset,
- * the \p md_alg from the function call is used.
- */
- int mbedtls_rsa_rsassa_pss_verify( mbedtls_rsa_context *ctx,
- int (*f_rng)(void *, unsigned char *, size_t),
- void *p_rng,
- int mode,
- mbedtls_md_type_t md_alg,
- unsigned int hashlen,
- const unsigned char *hash,
- const unsigned char *sig );
- /**
- * \brief This function performs a PKCS#1 v2.1 PSS verification
- * operation (RSASSA-PSS-VERIFY).
- *
- * The hash function for the MGF mask generating function
- * is that specified in \p mgf1_hash_id.
- *
- * \param ctx The RSA public key context.
- * \param f_rng The RNG function. Only needed for #MBEDTLS_RSA_PRIVATE.
- * \param p_rng The RNG parameter.
- * \param mode #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE.
- * \param md_alg The message-digest algorithm used to hash the original data.
- * Use #MBEDTLS_MD_NONE for signing raw data.
- * \param hashlen The length of the message digest. Only used if \p md_alg is #MBEDTLS_MD_NONE.
- * \param hash The buffer holding the message digest.
- * \param mgf1_hash_id The message digest used for mask generation.
- * \param expected_salt_len The length of the salt used in padding. Use
- * #MBEDTLS_RSA_SALT_LEN_ANY to accept any salt length.
- * \param sig The buffer holding the ciphertext.
- *
- * \return \c 0 if the verify operation was successful,
- * or an \c MBEDTLS_ERR_RSA_XXX error code
- * on failure.
- *
- * \note The \p sig buffer must be as large as the size
- * of \p ctx->N. For example, 128 Bytes if RSA-1024 is used.
- *
- * \note The \p hash_id in the RSA context is ignored.
- */
- int mbedtls_rsa_rsassa_pss_verify_ext( mbedtls_rsa_context *ctx,
- int (*f_rng)(void *, unsigned char *, size_t),
- void *p_rng,
- int mode,
- mbedtls_md_type_t md_alg,
- unsigned int hashlen,
- const unsigned char *hash,
- mbedtls_md_type_t mgf1_hash_id,
- int expected_salt_len,
- const unsigned char *sig );
- /**
- * \brief This function copies the components of an RSA context.
- *
- * \param dst The destination context.
- * \param src The source context.
- *
- * \return \c 0 on success,
- * #MBEDTLS_ERR_MPI_ALLOC_FAILED on memory allocation failure.
- */
- int mbedtls_rsa_copy( mbedtls_rsa_context *dst, const mbedtls_rsa_context *src );
- /**
- * \brief This function frees the components of an RSA key.
- *
- * \param ctx The RSA Context to free.
- */
- void mbedtls_rsa_free( mbedtls_rsa_context *ctx );
- #ifdef __cplusplus
- }
- #endif
- #else /* MBEDTLS_RSA_ALT */
- #include "rsa_alt.h"
- #endif /* MBEDTLS_RSA_ALT */
- #ifdef __cplusplus
- extern "C" {
- #endif
- /**
- * \brief The RSA checkup routine.
- *
- * \return \c 0 on success, or \c 1 on failure.
- */
- int mbedtls_rsa_self_test( int verbose );
- #ifdef __cplusplus
- }
- #endif
- #endif /* rsa.h */
|