diff --git a/thirdparty/README.md b/thirdparty/README.md index b29f4bd5e8d..9b6f6709729 100644 --- a/thirdparty/README.md +++ b/thirdparty/README.md @@ -253,10 +253,11 @@ changes are marked with `// -- GODOT --` comments. ## mbedtls - Upstream: https://tls.mbed.org/ -- Version: 2.16.3 +- Version: 2.16.4 - License: Apache 2.0 File extracted from upstream release tarball (`-apache.tgz` variant): + - All `*.h` from `include/mbedtls/` to `thirdparty/mbedtls/include/mbedtls/` - All `*.c` from `library/` to `thirdparty/mbedtls/library/` - LICENSE and apache-2.0.txt files diff --git a/thirdparty/mbedtls/include/mbedtls/bignum.h b/thirdparty/mbedtls/include/mbedtls/bignum.h index 1c8607264fe..22b373113ed 100644 --- a/thirdparty/mbedtls/include/mbedtls/bignum.h +++ b/thirdparty/mbedtls/include/mbedtls/bignum.h @@ -184,7 +184,7 @@ extern "C" { */ typedef struct mbedtls_mpi { - int s; /*!< integer sign */ + int s; /*!< Sign: -1 if the mpi is negative, 1 otherwise */ size_t n; /*!< total # of limbs */ mbedtls_mpi_uint *p; /*!< pointer to limbs */ } @@ -559,6 +559,24 @@ int mbedtls_mpi_cmp_abs( const mbedtls_mpi *X, const mbedtls_mpi *Y ); */ int mbedtls_mpi_cmp_mpi( const mbedtls_mpi *X, const mbedtls_mpi *Y ); +/** + * \brief Check if an MPI is less than the other in constant time. + * + * \param X The left-hand MPI. This must point to an initialized MPI + * with the same allocated length as Y. + * \param Y The right-hand MPI. This must point to an initialized MPI + * with the same allocated length as X. + * \param ret The result of the comparison: + * \c 1 if \p X is less than \p Y. + * \c 0 if \p X is greater than or equal to \p Y. + * + * \return 0 on success. + * \return MBEDTLS_ERR_MPI_BAD_INPUT_DATA if the allocated length of + * the two input MPIs is not the same. + */ +int mbedtls_mpi_lt_mpi_ct( const mbedtls_mpi *X, const mbedtls_mpi *Y, + unsigned *ret ); + /** * \brief Compare an MPI with an integer. * diff --git a/thirdparty/mbedtls/include/mbedtls/check_config.h b/thirdparty/mbedtls/include/mbedtls/check_config.h index 6eabcc8748f..d076c2352fd 100644 --- a/thirdparty/mbedtls/include/mbedtls/check_config.h +++ b/thirdparty/mbedtls/include/mbedtls/check_config.h @@ -281,6 +281,14 @@ #error "MBEDTLS_MEMORY_BUFFER_ALLOC_C defined, but not all prerequisites" #endif +#if defined(MBEDTLS_MEMORY_BACKTRACE) && !defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C) +#error "MBEDTLS_MEMORY_BACKTRACE defined, but not all prerequesites" +#endif + +#if defined(MBEDTLS_MEMORY_DEBUG) && !defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C) +#error "MBEDTLS_MEMORY_DEBUG defined, but not all prerequesites" +#endif + #if defined(MBEDTLS_PADLOCK_C) && !defined(MBEDTLS_HAVE_ASM) #error "MBEDTLS_PADLOCK_C defined, but not all prerequisites" #endif diff --git a/thirdparty/mbedtls/include/mbedtls/config.h b/thirdparty/mbedtls/include/mbedtls/config.h index 0cc502cd79e..8d9c31a5040 100644 --- a/thirdparty/mbedtls/include/mbedtls/config.h +++ b/thirdparty/mbedtls/include/mbedtls/config.h @@ -689,6 +689,13 @@ #define MBEDTLS_CIPHER_PADDING_ZEROS_AND_LEN #define MBEDTLS_CIPHER_PADDING_ZEROS +/** \def MBEDTLS_CTR_DRBG_USE_128_BIT_KEY + * + * Uncomment this macro to use a 128-bit key in the CTR_DRBG module. + * By default, CTR_DRBG uses a 256-bit key. + */ +//#define MBEDTLS_CTR_DRBG_USE_128_BIT_KEY + /** * \def MBEDTLS_ENABLE_WEAK_CIPHERSUITES * @@ -2149,7 +2156,11 @@ * * Enable the CTR_DRBG AES-based random generator. * The CTR_DRBG generator uses AES-256 by default. - * To use AES-128 instead, enable MBEDTLS_CTR_DRBG_USE_128_BIT_KEY below. + * To use AES-128 instead, enable \c MBEDTLS_CTR_DRBG_USE_128_BIT_KEY above. + * + * \note To achieve a 256-bit security strength with CTR_DRBG, + * you must use AES-256 *and* use sufficient entropy. + * See ctr_drbg.h for more details. * * Module: library/ctr_drbg.c * Caller: @@ -3043,7 +3054,6 @@ //#define MBEDTLS_CTR_DRBG_MAX_INPUT 256 /**< Maximum number of additional input bytes */ //#define MBEDTLS_CTR_DRBG_MAX_REQUEST 1024 /**< Maximum number of requested bytes per call */ //#define MBEDTLS_CTR_DRBG_MAX_SEED_INPUT 384 /**< Maximum size of (re)seed buffer */ -//#define MBEDTLS_CTR_DRBG_USE_128_BIT_KEY /**< Use 128-bit key for CTR_DRBG - may reduce security (see ctr_drbg.h) */ /* HMAC_DRBG options */ //#define MBEDTLS_HMAC_DRBG_RESEED_INTERVAL 10000 /**< Interval before reseed is performed by default */ diff --git a/thirdparty/mbedtls/include/mbedtls/ctr_drbg.h b/thirdparty/mbedtls/include/mbedtls/ctr_drbg.h index cc3df7b113f..e0b5ed9c937 100644 --- a/thirdparty/mbedtls/include/mbedtls/ctr_drbg.h +++ b/thirdparty/mbedtls/include/mbedtls/ctr_drbg.h @@ -1,7 +1,8 @@ /** * \file ctr_drbg.h * - * \brief This file contains CTR_DRBG definitions and functions. + * \brief This file contains definitions and functions for the + * CTR_DRBG pseudorandom generator. * * CTR_DRBG is a standardized way of building a PRNG from a block-cipher * in counter mode operation, as defined in NIST SP 800-90A: @@ -9,13 +10,35 @@ * Bit Generators. * * The Mbed TLS implementation of CTR_DRBG uses AES-256 (default) or AES-128 - * as the underlying block cipher. + * (if \c MBEDTLS_CTR_DRBG_USE_128_BIT_KEY is enabled at compile time) + * as the underlying block cipher, with a derivation function. + * The initial seeding grabs #MBEDTLS_CTR_DRBG_ENTROPY_LEN bytes of entropy. + * See the documentation of mbedtls_ctr_drbg_seed() for more details. * - * \warning Using 128-bit keys for CTR_DRBG limits the security of generated - * keys and operations that use random values generated to 128-bit security. + * Based on NIST SP 800-90A §10.2.1 table 3 and NIST SP 800-57 part 1 table 2, + * here are the security strengths achieved in typical configuration: + * - 256 bits under the default configuration of the library, with AES-256 + * and with #MBEDTLS_CTR_DRBG_ENTROPY_LEN set to 48 or more. + * - 256 bits if AES-256 is used, #MBEDTLS_CTR_DRBG_ENTROPY_LEN is set + * to 32 or more, and the DRBG is initialized with an explicit + * nonce in the \c custom parameter to mbedtls_ctr_drbg_seed(). + * - 128 bits if AES-256 is used but #MBEDTLS_CTR_DRBG_ENTROPY_LEN is + * between 24 and 47 and the DRBG is not initialized with an explicit + * nonce (see mbedtls_ctr_drbg_seed()). + * - 128 bits if AES-128 is used (\c MBEDTLS_CTR_DRBG_USE_128_BIT_KEY enabled) + * and #MBEDTLS_CTR_DRBG_ENTROPY_LEN is set to 24 or more (which is + * always the case unless it is explicitly set to a different value + * in config.h). + * + * Note that the value of #MBEDTLS_CTR_DRBG_ENTROPY_LEN defaults to: + * - \c 48 if the module \c MBEDTLS_SHA512_C is enabled and the symbol + * \c MBEDTLS_ENTROPY_FORCE_SHA256 is disabled at compile time. + * This is the default configuration of the library. + * - \c 32 if the module \c MBEDTLS_SHA512_C is disabled at compile time. + * - \c 32 if \c MBEDTLS_ENTROPY_FORCE_SHA256 is enabled at compile time. */ /* - * Copyright (C) 2006-2018, Arm Limited (or its affiliates), All Rights Reserved + * Copyright (C) 2006-2019, 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 @@ -56,9 +79,19 @@ #define MBEDTLS_CTR_DRBG_BLOCKSIZE 16 /**< The block size used by the cipher. */ #if defined(MBEDTLS_CTR_DRBG_USE_128_BIT_KEY) -#define MBEDTLS_CTR_DRBG_KEYSIZE 16 /**< The key size used by the cipher (compile-time choice: 128 bits). */ +#define MBEDTLS_CTR_DRBG_KEYSIZE 16 +/**< The key size in bytes used by the cipher. + * + * Compile-time choice: 16 bytes (128 bits) + * because #MBEDTLS_CTR_DRBG_USE_128_BIT_KEY is enabled. + */ #else -#define MBEDTLS_CTR_DRBG_KEYSIZE 32 /**< The key size used by the cipher (compile-time choice: 256 bits). */ +#define MBEDTLS_CTR_DRBG_KEYSIZE 32 +/**< The key size in bytes used by the cipher. + * + * Compile-time choice: 32 bytes (256 bits) + * because \c MBEDTLS_CTR_DRBG_USE_128_BIT_KEY is disabled. + */ #endif #define MBEDTLS_CTR_DRBG_KEYBITS ( MBEDTLS_CTR_DRBG_KEYSIZE * 8 ) /**< The key size for the DRBG operation, in bits. */ @@ -73,21 +106,31 @@ * \{ */ +/** \def MBEDTLS_CTR_DRBG_ENTROPY_LEN + * + * \brief The amount of entropy used per seed by default, in bytes. + */ #if !defined(MBEDTLS_CTR_DRBG_ENTROPY_LEN) #if defined(MBEDTLS_SHA512_C) && !defined(MBEDTLS_ENTROPY_FORCE_SHA256) +/** This is 48 bytes because the entropy module uses SHA-512 + * (\c MBEDTLS_ENTROPY_FORCE_SHA256 is disabled). + */ #define MBEDTLS_CTR_DRBG_ENTROPY_LEN 48 -/**< The amount of entropy used per seed by default: - * + +#else /* defined(MBEDTLS_SHA512_C) && !defined(MBEDTLS_ENTROPY_FORCE_SHA256) */ + +/** This is 32 bytes because the entropy module uses SHA-256 + * (the SHA512 module is disabled or + * \c MBEDTLS_ENTROPY_FORCE_SHA256 is enabled). */ -#else +#if !defined(MBEDTLS_CTR_DRBG_USE_128_BIT_KEY) +/** \warning To achieve a 256-bit security strength, you must pass a nonce + * to mbedtls_ctr_drbg_seed(). + */ +#endif /* !defined(MBEDTLS_CTR_DRBG_USE_128_BIT_KEY) */ #define MBEDTLS_CTR_DRBG_ENTROPY_LEN 32 -/**< Amount of entropy used per seed by default: - * - */ -#endif -#endif +#endif /* defined(MBEDTLS_SHA512_C) && !defined(MBEDTLS_ENTROPY_FORCE_SHA256) */ +#endif /* !defined(MBEDTLS_CTR_DRBG_ENTROPY_LEN) */ #if !defined(MBEDTLS_CTR_DRBG_RESEED_INTERVAL) #define MBEDTLS_CTR_DRBG_RESEED_INTERVAL 10000 @@ -106,7 +149,7 @@ #if !defined(MBEDTLS_CTR_DRBG_MAX_SEED_INPUT) #define MBEDTLS_CTR_DRBG_MAX_SEED_INPUT 384 -/**< The maximum size of seed or reseed buffer. */ +/**< The maximum size of seed or reseed buffer in bytes. */ #endif /* \} name SECTION: Module settings */ @@ -164,17 +207,68 @@ void mbedtls_ctr_drbg_init( mbedtls_ctr_drbg_context *ctx ); * \brief This function seeds and sets up the CTR_DRBG * entropy source for future reseeds. * - * \note Personalization data can be provided in addition to the more generic - * entropy source, to make this instantiation as unique as possible. + * A typical choice for the \p f_entropy and \p p_entropy parameters is + * to use the entropy module: + * - \p f_entropy is mbedtls_entropy_func(); + * - \p p_entropy is an instance of ::mbedtls_entropy_context initialized + * with mbedtls_entropy_init() (which registers the platform's default + * entropy sources). * + * The entropy length is #MBEDTLS_CTR_DRBG_ENTROPY_LEN by default. + * You can override it by calling mbedtls_ctr_drbg_set_entropy_len(). + * + * You can provide a personalization string in addition to the + * entropy source, to make this instantiation as unique as possible. + * + * \note The _seed_material_ value passed to the derivation + * function in the CTR_DRBG Instantiate Process + * described in NIST SP 800-90A §10.2.1.3.2 + * is the concatenation of the string obtained from + * calling \p f_entropy and the \p custom string. + * The origin of the nonce depends on the value of + * the entropy length relative to the security strength. + * - If the entropy length is at least 1.5 times the + * security strength then the nonce is taken from the + * string obtained with \p f_entropy. + * - If the entropy length is less than the security + * strength, then the nonce is taken from \p custom. + * In this case, for compliance with SP 800-90A, + * you must pass a unique value of \p custom at + * each invocation. See SP 800-90A §8.6.7 for more + * details. + */ +#if MBEDTLS_CTR_DRBG_ENTROPY_LEN < MBEDTLS_CTR_DRBG_KEYSIZE * 3 / 2 +/** \warning When #MBEDTLS_CTR_DRBG_ENTROPY_LEN is less than + * #MBEDTLS_CTR_DRBG_KEYSIZE * 3 / 2, to achieve the + * maximum security strength permitted by CTR_DRBG, + * you must pass a value of \p custom that is a nonce: + * this value must never be repeated in subsequent + * runs of the same application or on a different + * device. + */ +#endif +/** * \param ctx The CTR_DRBG context to seed. + * It must have been initialized with + * mbedtls_ctr_drbg_init(). + * After a successful call to mbedtls_ctr_drbg_seed(), + * you may not call mbedtls_ctr_drbg_seed() again on + * the same context unless you call + * mbedtls_ctr_drbg_free() and mbedtls_ctr_drbg_init() + * again first. * \param f_entropy The entropy callback, taking as arguments the * \p p_entropy context, the buffer to fill, and the - length of the buffer. - * \param p_entropy The entropy context. - * \param custom Personalization data, that is device-specific - identifiers. Can be NULL. - * \param len The length of the personalization data. + * length of the buffer. + * \p f_entropy is always called with a buffer size + * equal to the entropy length. + * \param p_entropy The entropy context to pass to \p f_entropy. + * \param custom The personalization string. + * This can be \c NULL, in which case the personalization + * string is empty regardless of the value of \p len. + * \param len The length of the personalization string. + * This must be at most + * #MBEDTLS_CTR_DRBG_MAX_SEED_INPUT + * - #MBEDTLS_CTR_DRBG_ENTROPY_LEN. * * \return \c 0 on success. * \return #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED on failure. @@ -197,7 +291,8 @@ void mbedtls_ctr_drbg_free( mbedtls_ctr_drbg_context *ctx ); * The default value is off. * * \note If enabled, entropy is gathered at the beginning of - * every call to mbedtls_ctr_drbg_random_with_add(). + * every call to mbedtls_ctr_drbg_random_with_add() + * or mbedtls_ctr_drbg_random(). * Only use this if your entropy source has sufficient * throughput. * @@ -209,18 +304,37 @@ void mbedtls_ctr_drbg_set_prediction_resistance( mbedtls_ctr_drbg_context *ctx, /** * \brief This function sets the amount of entropy grabbed on each - * seed or reseed. The default value is - * #MBEDTLS_CTR_DRBG_ENTROPY_LEN. + * seed or reseed. + * + * The default value is #MBEDTLS_CTR_DRBG_ENTROPY_LEN. + * + * \note The security strength of CTR_DRBG is bounded by the + * entropy length. Thus: + * - When using AES-256 + * (\c MBEDTLS_CTR_DRBG_USE_128_BIT_KEY is disabled, + * which is the default), + * \p len must be at least 32 (in bytes) + * to achieve a 256-bit strength. + * - When using AES-128 + * (\c MBEDTLS_CTR_DRBG_USE_128_BIT_KEY is enabled) + * \p len must be at least 16 (in bytes) + * to achieve a 128-bit strength. * * \param ctx The CTR_DRBG context. - * \param len The amount of entropy to grab. + * \param len The amount of entropy to grab, in bytes. + * This must be at most #MBEDTLS_CTR_DRBG_MAX_SEED_INPUT. */ void mbedtls_ctr_drbg_set_entropy_len( mbedtls_ctr_drbg_context *ctx, size_t len ); /** * \brief This function sets the reseed interval. - * The default value is #MBEDTLS_CTR_DRBG_RESEED_INTERVAL. + * + * The reseed interval is the number of calls to mbedtls_ctr_drbg_random() + * or mbedtls_ctr_drbg_random_with_add() after which the entropy function + * is called again. + * + * The default value is #MBEDTLS_CTR_DRBG_RESEED_INTERVAL. * * \param ctx The CTR_DRBG context. * \param interval The reseed interval. @@ -233,8 +347,12 @@ void mbedtls_ctr_drbg_set_reseed_interval( mbedtls_ctr_drbg_context *ctx, * extracts data from the entropy source. * * \param ctx The CTR_DRBG context. - * \param additional Additional data to add to the state. Can be NULL. + * \param additional Additional data to add to the state. Can be \c NULL. * \param len The length of the additional data. + * This must be less than + * #MBEDTLS_CTR_DRBG_MAX_SEED_INPUT - \c entropy_len + * where \c entropy_len is the entropy length + * configured for the context. * * \return \c 0 on success. * \return #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED on failure. @@ -246,7 +364,8 @@ int mbedtls_ctr_drbg_reseed( mbedtls_ctr_drbg_context *ctx, * \brief This function updates the state of the CTR_DRBG context. * * \param ctx The CTR_DRBG context. - * \param additional The data to update the state with. + * \param additional The data to update the state with. This must not be + * \c NULL unless \p add_len is \c 0. * \param add_len Length of \p additional in bytes. This must be at * most #MBEDTLS_CTR_DRBG_MAX_SEED_INPUT. * @@ -264,14 +383,23 @@ int mbedtls_ctr_drbg_update_ret( mbedtls_ctr_drbg_context *ctx, * \brief This function updates a CTR_DRBG instance with additional * data and uses it to generate random data. * - * \note The function automatically reseeds if the reseed counter is exceeded. + * This function automatically reseeds if the reseed counter is exceeded + * or prediction resistance is enabled. * * \param p_rng The CTR_DRBG context. This must be a pointer to a * #mbedtls_ctr_drbg_context structure. * \param output The buffer to fill. - * \param output_len The length of the buffer. - * \param additional Additional data to update. Can be NULL. - * \param add_len The length of the additional data. + * \param output_len The length of the buffer in bytes. + * \param additional Additional data to update. Can be \c NULL, in which + * case the additional data is empty regardless of + * the value of \p add_len. + * \param add_len The length of the additional data + * if \p additional is not \c NULL. + * This must be less than #MBEDTLS_CTR_DRBG_MAX_INPUT + * and less than + * #MBEDTLS_CTR_DRBG_MAX_SEED_INPUT - \c entropy_len + * where \c entropy_len is the entropy length + * configured for the context. * * \return \c 0 on success. * \return #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED or @@ -284,12 +412,14 @@ int mbedtls_ctr_drbg_random_with_add( void *p_rng, /** * \brief This function uses CTR_DRBG to generate random data. * - * \note The function automatically reseeds if the reseed counter is exceeded. + * This function automatically reseeds if the reseed counter is exceeded + * or prediction resistance is enabled. + * * * \param p_rng The CTR_DRBG context. This must be a pointer to a * #mbedtls_ctr_drbg_context structure. * \param output The buffer to fill. - * \param output_len The length of the buffer. + * \param output_len The length of the buffer in bytes. * * \return \c 0 on success. * \return #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED or @@ -336,7 +466,7 @@ MBEDTLS_DEPRECATED void mbedtls_ctr_drbg_update( * * \return \c 0 on success. * \return #MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR on file error. - * \return #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED on + * \return #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED on reseed * failure. */ int mbedtls_ctr_drbg_write_seed_file( mbedtls_ctr_drbg_context *ctx, const char *path ); @@ -350,8 +480,10 @@ int mbedtls_ctr_drbg_write_seed_file( mbedtls_ctr_drbg_context *ctx, const char * * \return \c 0 on success. * \return #MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR on file error. - * \return #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED or - * #MBEDTLS_ERR_CTR_DRBG_INPUT_TOO_BIG on failure. + * \return #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED on + * reseed failure. + * \return #MBEDTLS_ERR_CTR_DRBG_INPUT_TOO_BIG if the existing + * seed file is too large. */ int mbedtls_ctr_drbg_update_seed_file( mbedtls_ctr_drbg_context *ctx, const char *path ); #endif /* MBEDTLS_FS_IO */ diff --git a/thirdparty/mbedtls/include/mbedtls/hmac_drbg.h b/thirdparty/mbedtls/include/mbedtls/hmac_drbg.h index f1289cb306c..7931c2281cf 100644 --- a/thirdparty/mbedtls/include/mbedtls/hmac_drbg.h +++ b/thirdparty/mbedtls/include/mbedtls/hmac_drbg.h @@ -1,10 +1,14 @@ /** * \file hmac_drbg.h * - * \brief HMAC_DRBG (NIST SP 800-90A) + * \brief The HMAC_DRBG pseudorandom generator. + * + * This module implements the HMAC_DRBG pseudorandom generator described + * in NIST SP 800-90A: Recommendation for Random Number Generation Using + * Deterministic Random Bit Generators. */ /* - * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved + * Copyright (C) 2006-2019, ARM Limited, All Rights Reserved * SPDX-License-Identifier: Apache-2.0 * * Licensed under the Apache License, Version 2.0 (the "License"); you may @@ -104,38 +108,72 @@ typedef struct mbedtls_hmac_drbg_context } mbedtls_hmac_drbg_context; /** - * \brief HMAC_DRBG context initialization - * Makes the context ready for mbedtls_hmac_drbg_seed(), - * mbedtls_hmac_drbg_seed_buf() or - * mbedtls_hmac_drbg_free(). + * \brief HMAC_DRBG context initialization. * - * \param ctx HMAC_DRBG context to be initialized + * This function makes the context ready for mbedtls_hmac_drbg_seed(), + * mbedtls_hmac_drbg_seed_buf() or mbedtls_hmac_drbg_free(). + * + * \param ctx HMAC_DRBG context to be initialized. */ void mbedtls_hmac_drbg_init( mbedtls_hmac_drbg_context *ctx ); /** - * \brief HMAC_DRBG initial seeding - * Seed and setup entropy source for future reseeds. + * \brief HMAC_DRBG initial seeding. * - * \param ctx HMAC_DRBG context to be seeded - * \param md_info MD algorithm to use for HMAC_DRBG - * \param f_entropy Entropy callback (p_entropy, buffer to fill, buffer - * length) - * \param p_entropy Entropy context - * \param custom Personalization data (Device specific identifiers) - * (Can be NULL) - * \param len Length of personalization data + * Set the initial seed and set up the entropy source for future reseeds. * - * \note The "security strength" as defined by NIST is set to: - * 128 bits if md_alg is SHA-1, - * 192 bits if md_alg is SHA-224, - * 256 bits if md_alg is SHA-256 or higher. + * A typical choice for the \p f_entropy and \p p_entropy parameters is + * to use the entropy module: + * - \p f_entropy is mbedtls_entropy_func(); + * - \p p_entropy is an instance of ::mbedtls_entropy_context initialized + * with mbedtls_entropy_init() (which registers the platform's default + * entropy sources). + * + * You can provide a personalization string in addition to the + * entropy source, to make this instantiation as unique as possible. + * + * \note By default, the security strength as defined by NIST is: + * - 128 bits if \p md_info is SHA-1; + * - 192 bits if \p md_info is SHA-224; + * - 256 bits if \p md_info is SHA-256, SHA-384 or SHA-512. * Note that SHA-256 is just as efficient as SHA-224. + * The security strength can be reduced if a smaller + * entropy length is set with + * mbedtls_hmac_drbg_set_entropy_len(). * - * \return 0 if successful, or - * MBEDTLS_ERR_MD_BAD_INPUT_DATA, or - * MBEDTLS_ERR_MD_ALLOC_FAILED, or - * MBEDTLS_ERR_HMAC_DRBG_ENTROPY_SOURCE_FAILED. + * \note The default entropy length is the security strength + * (converted from bits to bytes). You can override + * it by calling mbedtls_hmac_drbg_set_entropy_len(). + * + * \note During the initial seeding, this function calls + * the entropy source to obtain a nonce + * whose length is half the entropy length. + * + * \param ctx HMAC_DRBG context to be seeded. + * \param md_info MD algorithm to use for HMAC_DRBG. + * \param f_entropy The entropy callback, taking as arguments the + * \p p_entropy context, the buffer to fill, and the + * length of the buffer. + * \p f_entropy is always called with a length that is + * less than or equal to the entropy length. + * \param p_entropy The entropy context to pass to \p f_entropy. + * \param custom The personalization string. + * This can be \c NULL, in which case the personalization + * string is empty regardless of the value of \p len. + * \param len The length of the personalization string. + * This must be at most #MBEDTLS_HMAC_DRBG_MAX_INPUT + * and also at most + * #MBEDTLS_HMAC_DRBG_MAX_SEED_INPUT - \p entropy_len * 3 / 2 + * where \p entropy_len is the entropy length + * described above. + * + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MD_BAD_INPUT_DATA if \p md_info is + * invalid. + * \return #MBEDTLS_ERR_MD_ALLOC_FAILED if there was not enough + * memory to allocate context data. + * \return #MBEDTLS_ERR_HMAC_DRBG_ENTROPY_SOURCE_FAILED + * if the call to \p f_entropy failed. */ int mbedtls_hmac_drbg_seed( mbedtls_hmac_drbg_context *ctx, const mbedtls_md_info_t * md_info, @@ -146,98 +184,131 @@ int mbedtls_hmac_drbg_seed( mbedtls_hmac_drbg_context *ctx, /** * \brief Initilisation of simpified HMAC_DRBG (never reseeds). - * (For use with deterministic ECDSA.) * - * \param ctx HMAC_DRBG context to be initialised - * \param md_info MD algorithm to use for HMAC_DRBG - * \param data Concatenation of entropy string and additional data - * \param data_len Length of data in bytes + * This function is meant for use in algorithms that need a pseudorandom + * input such as deterministic ECDSA. * - * \return 0 if successful, or - * MBEDTLS_ERR_MD_BAD_INPUT_DATA, or - * MBEDTLS_ERR_MD_ALLOC_FAILED. + * \param ctx HMAC_DRBG context to be initialised. + * \param md_info MD algorithm to use for HMAC_DRBG. + * \param data Concatenation of the initial entropy string and + * the additional data. + * \param data_len Length of \p data in bytes. + * + * \return \c 0 if successful. or + * \return #MBEDTLS_ERR_MD_BAD_INPUT_DATA if \p md_info is + * invalid. + * \return #MBEDTLS_ERR_MD_ALLOC_FAILED if there was not enough + * memory to allocate context data. */ int mbedtls_hmac_drbg_seed_buf( mbedtls_hmac_drbg_context *ctx, const mbedtls_md_info_t * md_info, const unsigned char *data, size_t data_len ); /** - * \brief Enable / disable prediction resistance (Default: Off) + * \brief This function turns prediction resistance on or off. + * The default value is off. * - * Note: If enabled, entropy is used for ctx->entropy_len before each call! - * Only use this if you have ample supply of good entropy! + * \note If enabled, entropy is gathered at the beginning of + * every call to mbedtls_hmac_drbg_random_with_add() + * or mbedtls_hmac_drbg_random(). + * Only use this if your entropy source has sufficient + * throughput. * - * \param ctx HMAC_DRBG context - * \param resistance MBEDTLS_HMAC_DRBG_PR_ON or MBEDTLS_HMAC_DRBG_PR_OFF + * \param ctx The HMAC_DRBG context. + * \param resistance #MBEDTLS_HMAC_DRBG_PR_ON or #MBEDTLS_HMAC_DRBG_PR_OFF. */ void mbedtls_hmac_drbg_set_prediction_resistance( mbedtls_hmac_drbg_context *ctx, int resistance ); /** - * \brief Set the amount of entropy grabbed on each reseed - * (Default: given by the security strength, which - * depends on the hash used, see \c mbedtls_hmac_drbg_init() ) + * \brief This function sets the amount of entropy grabbed on each + * seed or reseed. * - * \param ctx HMAC_DRBG context - * \param len Amount of entropy to grab, in bytes + * See the documentation of mbedtls_hmac_drbg_seed() for the default value. + * + * \param ctx The HMAC_DRBG context. + * \param len The amount of entropy to grab, in bytes. */ void mbedtls_hmac_drbg_set_entropy_len( mbedtls_hmac_drbg_context *ctx, size_t len ); /** - * \brief Set the reseed interval - * (Default: MBEDTLS_HMAC_DRBG_RESEED_INTERVAL) + * \brief Set the reseed interval. * - * \param ctx HMAC_DRBG context - * \param interval Reseed interval + * The reseed interval is the number of calls to mbedtls_hmac_drbg_random() + * or mbedtls_hmac_drbg_random_with_add() after which the entropy function + * is called again. + * + * The default value is #MBEDTLS_HMAC_DRBG_RESEED_INTERVAL. + * + * \param ctx The HMAC_DRBG context. + * \param interval The reseed interval. */ void mbedtls_hmac_drbg_set_reseed_interval( mbedtls_hmac_drbg_context *ctx, int interval ); /** - * \brief HMAC_DRBG update state + * \brief This function updates the state of the HMAC_DRBG context. * - * \param ctx HMAC_DRBG context - * \param additional Additional data to update state with, or NULL - * \param add_len Length of additional data, or 0 + * \param ctx The HMAC_DRBG context. + * \param additional The data to update the state with. + * If this is \c NULL, there is no additional data. + * \param add_len Length of \p additional in bytes. + * Unused if \p additional is \c NULL. * * \return \c 0 on success, or an error from the underlying * hash calculation. - * - * \note Additional data is optional, pass NULL and 0 as second - * third argument if no additional data is being used. */ int mbedtls_hmac_drbg_update_ret( mbedtls_hmac_drbg_context *ctx, const unsigned char *additional, size_t add_len ); /** - * \brief HMAC_DRBG reseeding (extracts data from entropy source) + * \brief This function reseeds the HMAC_DRBG context, that is + * extracts data from the entropy source. * - * \param ctx HMAC_DRBG context - * \param additional Additional data to add to state (Can be NULL) - * \param len Length of additional data + * \param ctx The HMAC_DRBG context. + * \param additional Additional data to add to the state. + * If this is \c NULL, there is no additional data + * and \p len should be \c 0. + * \param len The length of the additional data. + * This must be at most #MBEDTLS_HMAC_DRBG_MAX_INPUT + * and also at most + * #MBEDTLS_HMAC_DRBG_MAX_SEED_INPUT - \p entropy_len + * where \p entropy_len is the entropy length + * (see mbedtls_hmac_drbg_set_entropy_len()). * - * \return 0 if successful, or - * MBEDTLS_ERR_HMAC_DRBG_ENTROPY_SOURCE_FAILED + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_HMAC_DRBG_ENTROPY_SOURCE_FAILED + * if a call to the entropy function failed. */ int mbedtls_hmac_drbg_reseed( mbedtls_hmac_drbg_context *ctx, const unsigned char *additional, size_t len ); /** - * \brief HMAC_DRBG generate random with additional update input + * \brief This function updates an HMAC_DRBG instance with additional + * data and uses it to generate random data. * - * Note: Automatically reseeds if reseed_counter is reached or PR is enabled. + * This function automatically reseeds if the reseed counter is exceeded + * or prediction resistance is enabled. * - * \param p_rng HMAC_DRBG context - * \param output Buffer to fill - * \param output_len Length of the buffer - * \param additional Additional data to update with (can be NULL) - * \param add_len Length of additional data (can be 0) + * \param p_rng The HMAC_DRBG context. This must be a pointer to a + * #mbedtls_hmac_drbg_context structure. + * \param output The buffer to fill. + * \param output_len The length of the buffer in bytes. + * This must be at most #MBEDTLS_HMAC_DRBG_MAX_REQUEST. + * \param additional Additional data to update with. + * If this is \c NULL, there is no additional data + * and \p add_len should be \c 0. + * \param add_len The length of the additional data. + * This must be at most #MBEDTLS_HMAC_DRBG_MAX_INPUT. * - * \return 0 if successful, or - * MBEDTLS_ERR_HMAC_DRBG_ENTROPY_SOURCE_FAILED, or - * MBEDTLS_ERR_HMAC_DRBG_REQUEST_TOO_BIG, or - * MBEDTLS_ERR_HMAC_DRBG_INPUT_TOO_BIG. + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_HMAC_DRBG_ENTROPY_SOURCE_FAILED + * if a call to the entropy source failed. + * \return #MBEDTLS_ERR_HMAC_DRBG_REQUEST_TOO_BIG if + * \p output_len > #MBEDTLS_HMAC_DRBG_MAX_REQUEST. + * \return #MBEDTLS_ERR_HMAC_DRBG_INPUT_TOO_BIG if + * \p add_len > #MBEDTLS_HMAC_DRBG_MAX_INPUT. */ int mbedtls_hmac_drbg_random_with_add( void *p_rng, unsigned char *output, size_t output_len, @@ -245,24 +316,29 @@ int mbedtls_hmac_drbg_random_with_add( void *p_rng, size_t add_len ); /** - * \brief HMAC_DRBG generate random + * \brief This function uses HMAC_DRBG to generate random data. * - * Note: Automatically reseeds if reseed_counter is reached or PR is enabled. + * This function automatically reseeds if the reseed counter is exceeded + * or prediction resistance is enabled. * - * \param p_rng HMAC_DRBG context - * \param output Buffer to fill - * \param out_len Length of the buffer + * \param p_rng The HMAC_DRBG context. This must be a pointer to a + * #mbedtls_hmac_drbg_context structure. + * \param output The buffer to fill. + * \param out_len The length of the buffer in bytes. + * This must be at most #MBEDTLS_HMAC_DRBG_MAX_REQUEST. * - * \return 0 if successful, or - * MBEDTLS_ERR_HMAC_DRBG_ENTROPY_SOURCE_FAILED, or - * MBEDTLS_ERR_HMAC_DRBG_REQUEST_TOO_BIG + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_HMAC_DRBG_ENTROPY_SOURCE_FAILED + * if a call to the entropy source failed. + * \return #MBEDTLS_ERR_HMAC_DRBG_REQUEST_TOO_BIG if + * \p out_len > #MBEDTLS_HMAC_DRBG_MAX_REQUEST. */ int mbedtls_hmac_drbg_random( void *p_rng, unsigned char *output, size_t out_len ); /** * \brief Free an HMAC_DRBG context * - * \param ctx HMAC_DRBG context to free. + * \param ctx The HMAC_DRBG context to free. */ void mbedtls_hmac_drbg_free( mbedtls_hmac_drbg_context *ctx ); @@ -273,17 +349,16 @@ void mbedtls_hmac_drbg_free( mbedtls_hmac_drbg_context *ctx ); #define MBEDTLS_DEPRECATED #endif /** - * \brief HMAC_DRBG update state + * \brief This function updates the state of the HMAC_DRBG context. * * \deprecated Superseded by mbedtls_hmac_drbg_update_ret() * in 2.16.0. * - * \param ctx HMAC_DRBG context - * \param additional Additional data to update state with, or NULL - * \param add_len Length of additional data, or 0 - * - * \note Additional data is optional, pass NULL and 0 as second - * third argument if no additional data is being used. + * \param ctx The HMAC_DRBG context. + * \param additional The data to update the state with. + * If this is \c NULL, there is no additional data. + * \param add_len Length of \p additional in bytes. + * Unused if \p additional is \c NULL. */ MBEDTLS_DEPRECATED void mbedtls_hmac_drbg_update( mbedtls_hmac_drbg_context *ctx, @@ -293,26 +368,31 @@ MBEDTLS_DEPRECATED void mbedtls_hmac_drbg_update( #if defined(MBEDTLS_FS_IO) /** - * \brief Write a seed file + * \brief This function writes a seed file. * - * \param ctx HMAC_DRBG context - * \param path Name of the file + * \param ctx The HMAC_DRBG context. + * \param path The name of the file. * - * \return 0 if successful, 1 on file error, or - * MBEDTLS_ERR_HMAC_DRBG_ENTROPY_SOURCE_FAILED + * \return \c 0 on success. + * \return #MBEDTLS_ERR_HMAC_DRBG_FILE_IO_ERROR on file error. + * \return #MBEDTLS_ERR_HMAC_DRBG_ENTROPY_SOURCE_FAILED on reseed + * failure. */ int mbedtls_hmac_drbg_write_seed_file( mbedtls_hmac_drbg_context *ctx, const char *path ); /** - * \brief Read and update a seed file. Seed is added to this - * instance + * \brief This function reads and updates a seed file. The seed + * is added to this instance. * - * \param ctx HMAC_DRBG context - * \param path Name of the file + * \param ctx The HMAC_DRBG context. + * \param path The name of the file. * - * \return 0 if successful, 1 on file error, - * MBEDTLS_ERR_HMAC_DRBG_ENTROPY_SOURCE_FAILED or - * MBEDTLS_ERR_HMAC_DRBG_INPUT_TOO_BIG + * \return \c 0 on success. + * \return #MBEDTLS_ERR_HMAC_DRBG_FILE_IO_ERROR on file error. + * \return #MBEDTLS_ERR_HMAC_DRBG_ENTROPY_SOURCE_FAILED on + * reseed failure. + * \return #MBEDTLS_ERR_HMAC_DRBG_INPUT_TOO_BIG if the existing + * seed file is too large. */ int mbedtls_hmac_drbg_update_seed_file( mbedtls_hmac_drbg_context *ctx, const char *path ); #endif /* MBEDTLS_FS_IO */ @@ -320,9 +400,10 @@ int mbedtls_hmac_drbg_update_seed_file( mbedtls_hmac_drbg_context *ctx, const ch #if defined(MBEDTLS_SELF_TEST) /** - * \brief Checkup routine + * \brief The HMAC_DRBG Checkup routine. * - * \return 0 if successful, or 1 if the test failed + * \return \c 0 if successful. + * \return \c 1 if the test failed. */ int mbedtls_hmac_drbg_self_test( int verbose ); #endif diff --git a/thirdparty/mbedtls/include/mbedtls/version.h b/thirdparty/mbedtls/include/mbedtls/version.h index b4eef71e509..aeffb166991 100644 --- a/thirdparty/mbedtls/include/mbedtls/version.h +++ b/thirdparty/mbedtls/include/mbedtls/version.h @@ -40,16 +40,16 @@ */ #define MBEDTLS_VERSION_MAJOR 2 #define MBEDTLS_VERSION_MINOR 16 -#define MBEDTLS_VERSION_PATCH 3 +#define MBEDTLS_VERSION_PATCH 4 /** * The single version number has the following structure: * MMNNPP00 * Major version | Minor version | Patch version */ -#define MBEDTLS_VERSION_NUMBER 0x02100300 -#define MBEDTLS_VERSION_STRING "2.16.3" -#define MBEDTLS_VERSION_STRING_FULL "mbed TLS 2.16.3" +#define MBEDTLS_VERSION_NUMBER 0x02100400 +#define MBEDTLS_VERSION_STRING "2.16.4" +#define MBEDTLS_VERSION_STRING_FULL "mbed TLS 2.16.4" #if defined(MBEDTLS_VERSION_C) diff --git a/thirdparty/mbedtls/library/aes.c b/thirdparty/mbedtls/library/aes.c index aff0a9939a8..02a7986b59c 100644 --- a/thirdparty/mbedtls/library/aes.c +++ b/thirdparty/mbedtls/library/aes.c @@ -918,6 +918,18 @@ int mbedtls_internal_aes_encrypt( mbedtls_aes_context *ctx, PUT_UINT32_LE( X2, output, 8 ); PUT_UINT32_LE( X3, output, 12 ); + mbedtls_platform_zeroize( &X0, sizeof( X0 ) ); + mbedtls_platform_zeroize( &X1, sizeof( X1 ) ); + mbedtls_platform_zeroize( &X2, sizeof( X2 ) ); + mbedtls_platform_zeroize( &X3, sizeof( X3 ) ); + + mbedtls_platform_zeroize( &Y0, sizeof( Y0 ) ); + mbedtls_platform_zeroize( &Y1, sizeof( Y1 ) ); + mbedtls_platform_zeroize( &Y2, sizeof( Y2 ) ); + mbedtls_platform_zeroize( &Y3, sizeof( Y3 ) ); + + mbedtls_platform_zeroize( &RK, sizeof( RK ) ); + return( 0 ); } #endif /* !MBEDTLS_AES_ENCRYPT_ALT */ @@ -986,6 +998,18 @@ int mbedtls_internal_aes_decrypt( mbedtls_aes_context *ctx, PUT_UINT32_LE( X2, output, 8 ); PUT_UINT32_LE( X3, output, 12 ); + mbedtls_platform_zeroize( &X0, sizeof( X0 ) ); + mbedtls_platform_zeroize( &X1, sizeof( X1 ) ); + mbedtls_platform_zeroize( &X2, sizeof( X2 ) ); + mbedtls_platform_zeroize( &X3, sizeof( X3 ) ); + + mbedtls_platform_zeroize( &Y0, sizeof( Y0 ) ); + mbedtls_platform_zeroize( &Y1, sizeof( Y1 ) ); + mbedtls_platform_zeroize( &Y2, sizeof( Y2 ) ); + mbedtls_platform_zeroize( &Y3, sizeof( Y3 ) ); + + mbedtls_platform_zeroize( &RK, sizeof( RK ) ); + return( 0 ); } #endif /* !MBEDTLS_AES_DECRYPT_ALT */ diff --git a/thirdparty/mbedtls/library/bignum.c b/thirdparty/mbedtls/library/bignum.c index d1717e94357..6713bcbf6f2 100644 --- a/thirdparty/mbedtls/library/bignum.c +++ b/thirdparty/mbedtls/library/bignum.c @@ -1071,6 +1071,107 @@ int mbedtls_mpi_cmp_mpi( const mbedtls_mpi *X, const mbedtls_mpi *Y ) return( 0 ); } +/** Decide if an integer is less than the other, without branches. + * + * \param x First integer. + * \param y Second integer. + * + * \return 1 if \p x is less than \p y, 0 otherwise + */ +static unsigned ct_lt_mpi_uint( const mbedtls_mpi_uint x, + const mbedtls_mpi_uint y ) +{ + mbedtls_mpi_uint ret; + mbedtls_mpi_uint cond; + + /* + * Check if the most significant bits (MSB) of the operands are different. + */ + cond = ( x ^ y ); + /* + * If the MSB are the same then the difference x-y will be negative (and + * have its MSB set to 1 during conversion to unsigned) if and only if x> ( biL - 1 ); + + return (unsigned) ret; +} + +/* + * Compare signed values in constant time + */ +int mbedtls_mpi_lt_mpi_ct( const mbedtls_mpi *X, const mbedtls_mpi *Y, + unsigned *ret ) +{ + size_t i; + /* The value of any of these variables is either 0 or 1 at all times. */ + unsigned cond, done, X_is_negative, Y_is_negative; + + MPI_VALIDATE_RET( X != NULL ); + MPI_VALIDATE_RET( Y != NULL ); + MPI_VALIDATE_RET( ret != NULL ); + + if( X->n != Y->n ) + return MBEDTLS_ERR_MPI_BAD_INPUT_DATA; + + /* + * Set sign_N to 1 if N >= 0, 0 if N < 0. + * We know that N->s == 1 if N >= 0 and N->s == -1 if N < 0. + */ + X_is_negative = ( X->s & 2 ) >> 1; + Y_is_negative = ( Y->s & 2 ) >> 1; + + /* + * If the signs are different, then the positive operand is the bigger. + * That is if X is negative (X_is_negative == 1), then X < Y is true and it + * is false if X is positive (X_is_negative == 0). + */ + cond = ( X_is_negative ^ Y_is_negative ); + *ret = cond & X_is_negative; + + /* + * This is a constant-time function. We might have the result, but we still + * need to go through the loop. Record if we have the result already. + */ + done = cond; + + for( i = X->n; i > 0; i-- ) + { + /* + * If Y->p[i - 1] < X->p[i - 1] then X < Y is true if and only if both + * X and Y are negative. + * + * Again even if we can make a decision, we just mark the result and + * the fact that we are done and continue looping. + */ + cond = ct_lt_mpi_uint( Y->p[i - 1], X->p[i - 1] ); + *ret |= cond & ( 1 - done ) & X_is_negative; + done |= cond; + + /* + * If X->p[i - 1] < Y->p[i - 1] then X < Y is true if and only if both + * X and Y are positive. + * + * Again even if we can make a decision, we just mark the result and + * the fact that we are done and continue looping. + */ + cond = ct_lt_mpi_uint( X->p[i - 1], Y->p[i - 1] ); + *ret |= cond & ( 1 - done ) & ( 1 - X_is_negative ); + done |= cond; + } + + return( 0 ); +} + /* * Compare signed values */ @@ -2338,8 +2439,6 @@ static int mpi_miller_rabin( const mbedtls_mpi *X, size_t rounds, MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &R, &W ) ); MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &R, s ) ); - i = mbedtls_mpi_bitlen( X ); - for( i = 0; i < rounds; i++ ) { /* diff --git a/thirdparty/mbedtls/library/ctr_drbg.c b/thirdparty/mbedtls/library/ctr_drbg.c index fb121575bbb..ad0a1936d1b 100644 --- a/thirdparty/mbedtls/library/ctr_drbg.c +++ b/thirdparty/mbedtls/library/ctr_drbg.c @@ -62,68 +62,6 @@ void mbedtls_ctr_drbg_init( mbedtls_ctr_drbg_context *ctx ) #endif } -/* - * Non-public function wrapped by mbedtls_ctr_drbg_seed(). Necessary to allow - * NIST tests to succeed (which require known length fixed entropy) - */ -/* CTR_DRBG_Instantiate with derivation function (SP 800-90A §10.2.1.3.2) - * mbedtls_ctr_drbg_seed_entropy_len(ctx, f_entropy, p_entropy, - * custom, len, entropy_len) - * implements - * CTR_DRBG_Instantiate(entropy_input, nonce, personalization_string, - * security_strength) -> initial_working_state - * with inputs - * custom[:len] = nonce || personalization_string - * where entropy_input comes from f_entropy for entropy_len bytes - * and with outputs - * ctx = initial_working_state - */ -int mbedtls_ctr_drbg_seed_entropy_len( - mbedtls_ctr_drbg_context *ctx, - int (*f_entropy)(void *, unsigned char *, size_t), - void *p_entropy, - const unsigned char *custom, - size_t len, - size_t entropy_len ) -{ - int ret; - unsigned char key[MBEDTLS_CTR_DRBG_KEYSIZE]; - - memset( key, 0, MBEDTLS_CTR_DRBG_KEYSIZE ); - - mbedtls_aes_init( &ctx->aes_ctx ); - - ctx->f_entropy = f_entropy; - ctx->p_entropy = p_entropy; - - ctx->entropy_len = entropy_len; - ctx->reseed_interval = MBEDTLS_CTR_DRBG_RESEED_INTERVAL; - - /* - * Initialize with an empty key - */ - if( ( ret = mbedtls_aes_setkey_enc( &ctx->aes_ctx, key, MBEDTLS_CTR_DRBG_KEYBITS ) ) != 0 ) - { - return( ret ); - } - - if( ( ret = mbedtls_ctr_drbg_reseed( ctx, custom, len ) ) != 0 ) - { - return( ret ); - } - return( 0 ); -} - -int mbedtls_ctr_drbg_seed( mbedtls_ctr_drbg_context *ctx, - int (*f_entropy)(void *, unsigned char *, size_t), - void *p_entropy, - const unsigned char *custom, - size_t len ) -{ - return( mbedtls_ctr_drbg_seed_entropy_len( ctx, f_entropy, p_entropy, custom, len, - MBEDTLS_CTR_DRBG_ENTROPY_LEN ) ); -} - void mbedtls_ctr_drbg_free( mbedtls_ctr_drbg_context *ctx ) { if( ctx == NULL ) @@ -427,6 +365,63 @@ exit: return( ret ); } +/* CTR_DRBG_Instantiate with derivation function (SP 800-90A §10.2.1.3.2) + * mbedtls_ctr_drbg_seed(ctx, f_entropy, p_entropy, custom, len) + * implements + * CTR_DRBG_Instantiate(entropy_input, nonce, personalization_string, + * security_strength) -> initial_working_state + * with inputs + * custom[:len] = nonce || personalization_string + * where entropy_input comes from f_entropy for ctx->entropy_len bytes + * and with outputs + * ctx = initial_working_state + */ +int mbedtls_ctr_drbg_seed( mbedtls_ctr_drbg_context *ctx, + int (*f_entropy)(void *, unsigned char *, size_t), + void *p_entropy, + const unsigned char *custom, + size_t len ) +{ + int ret; + unsigned char key[MBEDTLS_CTR_DRBG_KEYSIZE]; + + memset( key, 0, MBEDTLS_CTR_DRBG_KEYSIZE ); + + mbedtls_aes_init( &ctx->aes_ctx ); + + ctx->f_entropy = f_entropy; + ctx->p_entropy = p_entropy; + + if( ctx->entropy_len == 0 ) + ctx->entropy_len = MBEDTLS_CTR_DRBG_ENTROPY_LEN; + ctx->reseed_interval = MBEDTLS_CTR_DRBG_RESEED_INTERVAL; + + /* + * Initialize with an empty key + */ + if( ( ret = mbedtls_aes_setkey_enc( &ctx->aes_ctx, key, MBEDTLS_CTR_DRBG_KEYBITS ) ) != 0 ) + { + return( ret ); + } + + if( ( ret = mbedtls_ctr_drbg_reseed( ctx, custom, len ) ) != 0 ) + { + return( ret ); + } + return( 0 ); +} + +/* Backward compatibility wrapper */ +int mbedtls_ctr_drbg_seed_entropy_len( + mbedtls_ctr_drbg_context *ctx, + int (*f_entropy)(void *, unsigned char *, size_t), void *p_entropy, + const unsigned char *custom, size_t len, + size_t entropy_len ) +{ + mbedtls_ctr_drbg_set_entropy_len( ctx, entropy_len ); + return( mbedtls_ctr_drbg_seed( ctx, f_entropy, p_entropy, custom, len ) ); +} + /* CTR_DRBG_Generate with derivation function (SP 800-90A §10.2.1.5.2) * mbedtls_ctr_drbg_random_with_add(ctx, output, output_len, additional, add_len) * implements @@ -517,7 +512,7 @@ int mbedtls_ctr_drbg_random_with_add( void *p_rng, exit: mbedtls_platform_zeroize( add_input, sizeof( add_input ) ); mbedtls_platform_zeroize( tmp, sizeof( tmp ) ); - return( 0 ); + return( ret ); } int mbedtls_ctr_drbg_random( void *p_rng, unsigned char *output, size_t output_len ) @@ -678,8 +673,11 @@ int mbedtls_ctr_drbg_self_test( int verbose ) mbedtls_printf( " CTR_DRBG (PR = TRUE) : " ); test_offset = 0; - CHK( mbedtls_ctr_drbg_seed_entropy_len( &ctx, ctr_drbg_self_test_entropy, - (void *) entropy_source_pr, nonce_pers_pr, 16, 32 ) ); + mbedtls_ctr_drbg_set_entropy_len( &ctx, 32 ); + CHK( mbedtls_ctr_drbg_seed( &ctx, + ctr_drbg_self_test_entropy, + (void *) entropy_source_pr, + nonce_pers_pr, 16 ) ); mbedtls_ctr_drbg_set_prediction_resistance( &ctx, MBEDTLS_CTR_DRBG_PR_ON ); CHK( mbedtls_ctr_drbg_random( &ctx, buf, MBEDTLS_CTR_DRBG_BLOCKSIZE ) ); CHK( mbedtls_ctr_drbg_random( &ctx, buf, MBEDTLS_CTR_DRBG_BLOCKSIZE ) ); @@ -699,8 +697,11 @@ int mbedtls_ctr_drbg_self_test( int verbose ) mbedtls_ctr_drbg_init( &ctx ); test_offset = 0; - CHK( mbedtls_ctr_drbg_seed_entropy_len( &ctx, ctr_drbg_self_test_entropy, - (void *) entropy_source_nopr, nonce_pers_nopr, 16, 32 ) ); + mbedtls_ctr_drbg_set_entropy_len( &ctx, 32 ); + CHK( mbedtls_ctr_drbg_seed( &ctx, + ctr_drbg_self_test_entropy, + (void *) entropy_source_nopr, + nonce_pers_nopr, 16 ) ); CHK( mbedtls_ctr_drbg_random( &ctx, buf, 16 ) ); CHK( mbedtls_ctr_drbg_reseed( &ctx, NULL, 0 ) ); CHK( mbedtls_ctr_drbg_random( &ctx, buf, 16 ) ); diff --git a/thirdparty/mbedtls/library/ecdsa.c b/thirdparty/mbedtls/library/ecdsa.c index 2b4800642d7..3cf3d7cc4f1 100644 --- a/thirdparty/mbedtls/library/ecdsa.c +++ b/thirdparty/mbedtls/library/ecdsa.c @@ -363,6 +363,7 @@ modn: MBEDTLS_MPI_CHK( mbedtls_mpi_add_mpi( &e, &e, s ) ); MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &e, &e, &t ) ); MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( pk, pk, &t ) ); + MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( pk, pk, &grp->N ) ); MBEDTLS_MPI_CHK( mbedtls_mpi_inv_mod( s, pk, &grp->N ) ); MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( s, s, &e ) ); MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( s, s, &grp->N ) ); diff --git a/thirdparty/mbedtls/library/ecp.c b/thirdparty/mbedtls/library/ecp.c index db36191b9b8..040c20bd388 100644 --- a/thirdparty/mbedtls/library/ecp.c +++ b/thirdparty/mbedtls/library/ecp.c @@ -2724,6 +2724,7 @@ int mbedtls_ecp_gen_privkey( const mbedtls_ecp_group *grp, { /* SEC1 3.2.1: Generate d such that 1 <= n < N */ int count = 0; + unsigned cmp = 0; /* * Match the procedure given in RFC 6979 (deterministic ECDSA): @@ -2748,9 +2749,14 @@ int mbedtls_ecp_gen_privkey( const mbedtls_ecp_group *grp, */ if( ++count > 30 ) return( MBEDTLS_ERR_ECP_RANDOM_FAILED ); + + ret = mbedtls_mpi_lt_mpi_ct( d, &grp->N, &cmp ); + if( ret != 0 ) + { + goto cleanup; + } } - while( mbedtls_mpi_cmp_int( d, 1 ) < 0 || - mbedtls_mpi_cmp_mpi( d, &grp->N ) >= 0 ); + while( mbedtls_mpi_cmp_int( d, 1 ) < 0 || cmp != 1 ); } #endif /* ECP_SHORTWEIERSTRASS */ diff --git a/thirdparty/mbedtls/library/hmac_drbg.c b/thirdparty/mbedtls/library/hmac_drbg.c index 50d88bd54b6..284c9b4e96f 100644 --- a/thirdparty/mbedtls/library/hmac_drbg.c +++ b/thirdparty/mbedtls/library/hmac_drbg.c @@ -273,16 +273,19 @@ int mbedtls_hmac_drbg_seed( mbedtls_hmac_drbg_context *ctx, ctx->reseed_interval = MBEDTLS_HMAC_DRBG_RESEED_INTERVAL; - /* - * See SP800-57 5.6.1 (p. 65-66) for the security strength provided by - * each hash function, then according to SP800-90A rev1 10.1 table 2, - * min_entropy_len (in bits) is security_strength. - * - * (This also matches the sizes used in the NIST test vectors.) - */ - ctx->entropy_len = md_size <= 20 ? 16 : /* 160-bits hash -> 128 bits */ - md_size <= 28 ? 24 : /* 224-bits hash -> 192 bits */ - 32; /* better (256+) -> 256 bits */ + if( ctx->entropy_len == 0 ) + { + /* + * See SP800-57 5.6.1 (p. 65-66) for the security strength provided by + * each hash function, then according to SP800-90A rev1 10.1 table 2, + * min_entropy_len (in bits) is security_strength. + * + * (This also matches the sizes used in the NIST test vectors.) + */ + ctx->entropy_len = md_size <= 20 ? 16 : /* 160-bits hash -> 128 bits */ + md_size <= 28 ? 24 : /* 224-bits hash -> 192 bits */ + 32; /* better (256+) -> 256 bits */ + } if( ( ret = hmac_drbg_reseed_core( ctx, custom, len, 1 /* add nonce */ ) ) != 0 ) @@ -303,7 +306,7 @@ void mbedtls_hmac_drbg_set_prediction_resistance( mbedtls_hmac_drbg_context *ctx } /* - * Set entropy length grabbed for reseeds + * Set entropy length grabbed for seeding */ void mbedtls_hmac_drbg_set_entropy_len( mbedtls_hmac_drbg_context *ctx, size_t len ) { diff --git a/thirdparty/mbedtls/library/version_features.c b/thirdparty/mbedtls/library/version_features.c index a99ee808d69..3b67b2be859 100644 --- a/thirdparty/mbedtls/library/version_features.c +++ b/thirdparty/mbedtls/library/version_features.c @@ -297,6 +297,9 @@ static const char *features[] = { #if defined(MBEDTLS_CIPHER_PADDING_ZEROS) "MBEDTLS_CIPHER_PADDING_ZEROS", #endif /* MBEDTLS_CIPHER_PADDING_ZEROS */ +#if defined(MBEDTLS_CTR_DRBG_USE_128_BIT_KEY) + "MBEDTLS_CTR_DRBG_USE_128_BIT_KEY", +#endif /* MBEDTLS_CTR_DRBG_USE_128_BIT_KEY */ #if defined(MBEDTLS_ENABLE_WEAK_CIPHERSUITES) "MBEDTLS_ENABLE_WEAK_CIPHERSUITES", #endif /* MBEDTLS_ENABLE_WEAK_CIPHERSUITES */