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mlkem_test: add mlkem-native

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FallenSigh
2026-07-05 21:26:19 +08:00
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commit cd039e2e2e
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sdk/software/examples/mlkem_test/mlkem_native/mlkem_native.h Normal file
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/*
* Copyright (c) The mlkem-native project authors
* SPDX-License-Identifier: Apache-2.0 OR ISC OR MIT
*/
/* References
* ==========
*
* - [FIPS203]
* FIPS 203 Module-Lattice-Based Key-Encapsulation Mechanism Standard
* National Institute of Standards and Technology
* https://csrc.nist.gov/pubs/fips/203/final
*/
#ifndef MLK_H
#define MLK_H
/*
* Public API for mlkem-native.
*
* This header defines the public API of a single build of mlkem-native.
*
* Make sure the configuration file is in the include path
* (this is "mlkem_native_config.h" by default, or MLK_CONFIG_FILE if defined).
*
* # Multi-level builds
*
* This header specifies a build of mlkem-native for a fixed security level.
* If you need multiple security levels, leave the security level unspecified
* in the configuration file and include this header multiple times, setting
* MLK_CONFIG_PARAMETER_SET accordingly for each, and #undef'ing the MLK_H
* guard to allow multiple inclusions.
*
* # Legacy configuration (deprecated)
*
* Instead of providing the config file used for the build, you can
* alternatively set the following configuration options prior to
* including this header.
*
* This method of configuration is deprecated.
* It will be removed in mlkem-native-v2.
*
* - MLK_CONFIG_API_PARAMETER_SET [required]
*
* The parameter set used for the build; 512, 768, or 1024.
*
* - MLK_CONFIG_API_NAMESPACE_PREFIX [required]
*
* The namespace prefix used for the build.
*
* NOTE:
* For a multi-level build, you must include the 512/768/1024 suffixes
* in MLK_CONFIG_API_NAMESPACE_PREFIX.
*
* - MLK_CONFIG_API_NO_SUPERCOP [optional]
*
* By default, this header will also expose the mlkem-native API in the
* SUPERCOP naming convention crypto_kem_xxx. If you don't want/need this,
* set MLK_CONFIG_API_NO_SUPERCOP. You must set this for a multi-level build.
*
* - MLK_CONFIG_API_CONSTANTS_ONLY [optional]
*
* If you don't want this header to expose any function declarations,
* but only constants for the sizes of key material, set
* MLK_CONFIG_API_CONSTANTS_ONLY. In this case, you don't need to set
* MLK_CONFIG_API_PARAMETER_SET or MLK_CONFIG_API_NAMESPACE_PREFIX,
* nor include a configuration.
*
* - MLK_CONFIG_API_QUALIFIER [optional]
*
* Qualifier to apply to external API.
*
******************************************************************************/
/******************************* Key sizes ************************************/
/* Sizes of cryptographic material, per parameter set */
/* See mlkem/common.h for the arithmetic expressions giving rise to these */
/* check-magic: off */
#define MLKEM512_SECRETKEYBYTES 1632
#define MLKEM512_PUBLICKEYBYTES 800
#define MLKEM512_CIPHERTEXTBYTES 768
#define MLKEM768_SECRETKEYBYTES 2400
#define MLKEM768_PUBLICKEYBYTES 1184
#define MLKEM768_CIPHERTEXTBYTES 1088
#define MLKEM1024_SECRETKEYBYTES 3168
#define MLKEM1024_PUBLICKEYBYTES 1568
#define MLKEM1024_CIPHERTEXTBYTES 1568
/* check-magic: on */
/* Size of randomness coins in bytes (level-independent) */
#define MLKEM_SYMBYTES 32
#define MLKEM512_SYMBYTES MLKEM_SYMBYTES
#define MLKEM768_SYMBYTES MLKEM_SYMBYTES
#define MLKEM1024_SYMBYTES MLKEM_SYMBYTES
/* Size of shared secret in bytes (level-independent) */
#define MLKEM_BYTES 32
#define MLKEM512_BYTES MLKEM_BYTES
#define MLKEM768_BYTES MLKEM_BYTES
#define MLKEM1024_BYTES MLKEM_BYTES
/* Sizes of cryptographic material, as a function of LVL=512,768,1024 */
#define MLKEM_SECRETKEYBYTES_(LVL) MLKEM##LVL##_SECRETKEYBYTES
#define MLKEM_PUBLICKEYBYTES_(LVL) MLKEM##LVL##_PUBLICKEYBYTES
#define MLKEM_CIPHERTEXTBYTES_(LVL) MLKEM##LVL##_CIPHERTEXTBYTES
#define MLKEM_SECRETKEYBYTES(LVL) MLKEM_SECRETKEYBYTES_(LVL)
#define MLKEM_PUBLICKEYBYTES(LVL) MLKEM_PUBLICKEYBYTES_(LVL)
#define MLKEM_CIPHERTEXTBYTES(LVL) MLKEM_CIPHERTEXTBYTES_(LVL)
/****************************** Error codes ***********************************/
/* Generic failure condition */
#define MLK_ERR_FAIL (-1)
/* An allocation failed. This can only happen if MLK_CONFIG_CUSTOM_ALLOC_FREE
* is defined and the provided MLK_CUSTOM_ALLOC can fail. */
#define MLK_ERR_OUT_OF_MEMORY (-2)
/* An rng failure occured. Might be due to insufficient entropy or
* system misconfiguration. */
#define MLK_ERR_RNG_FAIL (-3)
/****************************** Function API **********************************/
#define MLK_API_CONCAT_(x, y) x##y
#define MLK_API_CONCAT(x, y) MLK_API_CONCAT_(x, y)
#define MLK_API_CONCAT_UNDERSCORE(x, y) MLK_API_CONCAT(MLK_API_CONCAT(x, _), y)
#if !defined(MLK_CONFIG_API_PARAMETER_SET)
/* Recommended configuration via same config file as used for the build. */
/* For now, we derive the legacy API configuration MLK_CONFIG_API_XXX from
* the config file. In mlkem-native-v2, this will be removed and we will
* exclusively work with MLK_CONFIG_XXX. */
/* You need to make sure the config file is in the include path. */
#if defined(MLK_CONFIG_FILE)
#include MLK_CONFIG_FILE
#else
#include "mlkem_native_config.h"
#endif
#define MLK_CONFIG_API_PARAMETER_SET MLK_CONFIG_PARAMETER_SET
#if defined(MLK_CONFIG_MULTILEVEL_BUILD)
#define MLK_CONFIG_API_NAMESPACE_PREFIX \
MLK_API_CONCAT(MLK_CONFIG_NAMESPACE_PREFIX, MLK_CONFIG_PARAMETER_SET)
#else
#define MLK_CONFIG_API_NAMESPACE_PREFIX MLK_CONFIG_NAMESPACE_PREFIX
#endif
#if defined(MLK_CONFIG_NO_SUPERCOP)
#define MLK_CONFIG_API_NO_SUPERCOP
#endif
#if defined(MLK_CONFIG_CONSTANTS_ONLY)
#define MLK_CONFIG_API_CONSTANTS_ONLY
#endif
#if defined(MLK_CONFIG_EXTERNAL_API_QUALIFIER)
#define MLK_CONFIG_API_QUALIFIER MLK_CONFIG_EXTERNAL_API_QUALIFIER
#endif
#else /* !MLK_CONFIG_API_PARAMETER_SET */
#define MLK_API_LEGACY_CONFIG
#endif /* MLK_CONFIG_API_PARAMETER_SET */
#define MLK_API_NAMESPACE(sym) \
MLK_API_CONCAT_UNDERSCORE(MLK_CONFIG_API_NAMESPACE_PREFIX, sym)
#if defined(__GNUC__) || defined(__clang__)
#define MLK_API_MUST_CHECK_RETURN_VALUE __attribute__((warn_unused_result))
#else
#define MLK_API_MUST_CHECK_RETURN_VALUE
#endif
#if defined(MLK_CONFIG_API_QUALIFIER)
#define MLK_API_QUALIFIER MLK_CONFIG_API_QUALIFIER
#else
#define MLK_API_QUALIFIER
#endif
#if !defined(MLK_CONFIG_API_CONSTANTS_ONLY)
#include <stdint.h>
#ifdef __cplusplus
extern "C"
{
#endif
/**
* Generate a public/private keypair for the ML-KEM key encapsulation mechanism.
*
* @spec{Implements @[FIPS203, Algorithm 16, ML-KEM.KeyGen_Internal].}
*
* @param[out] pk Output public key, an array of
* MLKEM{512,768,1024}_PUBLICKEYBYTES bytes.
* @param[out] sk Output private key, an array of
* MLKEM{512,768,1024}_SECRETKEYBYTES bytes.
* @param[in] coins Input randomness, an array of 2*MLKEM_SYMBYTES uniformly
* random bytes.
* @param context Application context. Only present when
* MLK_CONFIG_CONTEXT_PARAMETER is defined; type set by
* MLK_CONFIG_CONTEXT_PARAMETER_TYPE.
*
* @retval 0 Success.
* @retval MLK_ERR_FAIL MLK_CONFIG_KEYGEN_PCT enabled and PCT failed.
* @retval MLK_ERR_OUT_OF_MEMORY MLK_CONFIG_CUSTOM_ALLOC_FREE was used and
* MLK_CUSTOM_ALLOC returned NULL.
*/
MLK_API_QUALIFIER
MLK_API_MUST_CHECK_RETURN_VALUE
int MLK_API_NAMESPACE(keypair_derand)(
uint8_t pk[MLKEM_PUBLICKEYBYTES(MLK_CONFIG_API_PARAMETER_SET)],
uint8_t sk[MLKEM_SECRETKEYBYTES(MLK_CONFIG_API_PARAMETER_SET)],
const uint8_t coins[2 * MLKEM_SYMBYTES]
#ifdef MLK_CONFIG_CONTEXT_PARAMETER
,
MLK_CONFIG_CONTEXT_PARAMETER_TYPE context
#endif
);
#if !defined(MLK_CONFIG_NO_RANDOMIZED_API)
/**
* Generate a public/private keypair for the ML-KEM key encapsulation mechanism.
*
* @spec{Implements @[FIPS203, Algorithm 19, ML-KEM.KeyGen].}
*
* @param[out] pk Output public key, an array of
* MLKEM{512,768,1024}_PUBLICKEYBYTES bytes.
* @param[out] sk Output private key, an array of
* MLKEM{512,768,1024}_SECRETKEYBYTES bytes.
* @param context Application context. Only present when
* MLK_CONFIG_CONTEXT_PARAMETER is defined; type set by
* MLK_CONFIG_CONTEXT_PARAMETER_TYPE.
*
* @retval 0 Success.
* @retval MLK_ERR_FAIL MLK_CONFIG_KEYGEN_PCT enabled and PCT failed.
* @retval MLK_ERR_OUT_OF_MEMORY MLK_CONFIG_CUSTOM_ALLOC_FREE was used and
* MLK_CUSTOM_ALLOC returned NULL.
* @retval MLK_ERR_RNG_FAIL Random number generation failed.
*/
MLK_API_QUALIFIER
MLK_API_MUST_CHECK_RETURN_VALUE
int MLK_API_NAMESPACE(keypair)(
uint8_t pk[MLKEM_PUBLICKEYBYTES(MLK_CONFIG_API_PARAMETER_SET)],
uint8_t sk[MLKEM_SECRETKEYBYTES(MLK_CONFIG_API_PARAMETER_SET)]
#ifdef MLK_CONFIG_CONTEXT_PARAMETER
,
MLK_CONFIG_CONTEXT_PARAMETER_TYPE context
#endif
);
#endif /* !MLK_CONFIG_NO_RANDOMIZED_API */
/**
* Generate ciphertext and shared secret for a given public key.
*
* @spec{Implements @[FIPS203, Algorithm 17, ML-KEM.Encaps_Internal].}
*
* @param[out] ct Output ciphertext, an array of
* MLKEM{512,768,1024}_CIPHERTEXTBYTES bytes.
* @param[out] ss Output shared secret, an array of MLKEM_BYTES bytes.
* @param[in] pk Input public key, an array of
* MLKEM{512,768,1024}_PUBLICKEYBYTES bytes.
* @param[in] coins Input randomness, an array of MLKEM_SYMBYTES bytes.
* @param context Application context. Only present when
* MLK_CONFIG_CONTEXT_PARAMETER is defined; type set by
* MLK_CONFIG_CONTEXT_PARAMETER_TYPE.
*
* @retval 0 Success.
* @retval MLK_ERR_FAIL The 'modulus check' @[FIPS203, Section 7.2]
* for the public key failed.
* @retval MLK_ERR_OUT_OF_MEMORY MLK_CONFIG_CUSTOM_ALLOC_FREE was used and
* MLK_CUSTOM_ALLOC returned NULL.
*/
MLK_API_QUALIFIER
MLK_API_MUST_CHECK_RETURN_VALUE
int MLK_API_NAMESPACE(enc_derand)(
uint8_t ct[MLKEM_CIPHERTEXTBYTES(MLK_CONFIG_API_PARAMETER_SET)],
uint8_t ss[MLKEM_BYTES],
const uint8_t pk[MLKEM_PUBLICKEYBYTES(MLK_CONFIG_API_PARAMETER_SET)],
const uint8_t coins[MLKEM_SYMBYTES]
#ifdef MLK_CONFIG_CONTEXT_PARAMETER
,
MLK_CONFIG_CONTEXT_PARAMETER_TYPE context
#endif
);
#if !defined(MLK_CONFIG_NO_RANDOMIZED_API)
/**
* Generate ciphertext and shared secret for a given public key.
*
* @spec{Implements @[FIPS203, Algorithm 20, ML-KEM.Encaps].}
*
* @param[out] ct Output ciphertext, an array of
* MLKEM{512,768,1024}_CIPHERTEXTBYTES bytes.
* @param[out] ss Output shared secret, an array of MLKEM_BYTES bytes.
* @param[in] pk Input public key, an array of
* MLKEM{512,768,1024}_PUBLICKEYBYTES bytes.
* @param context Application context. Only present when
* MLK_CONFIG_CONTEXT_PARAMETER is defined; type set by
* MLK_CONFIG_CONTEXT_PARAMETER_TYPE.
*
* @retval 0 Success.
* @retval MLK_ERR_FAIL The 'modulus check' @[FIPS203, Section 7.2]
* for the public key failed.
* @retval MLK_ERR_OUT_OF_MEMORY MLK_CONFIG_CUSTOM_ALLOC_FREE was used and
* MLK_CUSTOM_ALLOC returned NULL.
* @retval MLK_ERR_RNG_FAIL Random number generation failed.
*/
MLK_API_QUALIFIER
MLK_API_MUST_CHECK_RETURN_VALUE
int MLK_API_NAMESPACE(enc)(
uint8_t ct[MLKEM_CIPHERTEXTBYTES(MLK_CONFIG_API_PARAMETER_SET)],
uint8_t ss[MLKEM_BYTES],
const uint8_t pk[MLKEM_PUBLICKEYBYTES(MLK_CONFIG_API_PARAMETER_SET)]
#ifdef MLK_CONFIG_CONTEXT_PARAMETER
,
MLK_CONFIG_CONTEXT_PARAMETER_TYPE context
#endif
);
#endif /* !MLK_CONFIG_NO_RANDOMIZED_API */
/**
* Generate shared secret for a given ciphertext and private key.
*
* @spec{Implements @[FIPS203, Algorithm 21, ML-KEM.Decaps].}
*
* @param[out] ss Output shared secret, an array of MLKEM_BYTES bytes.
* @param[in] ct Input ciphertext, an array of
* MLKEM{512,768,1024}_CIPHERTEXTBYTES bytes.
* @param[in] sk Input private key, an array of
* MLKEM{512,768,1024}_SECRETKEYBYTES bytes.
* @param context Application context. Only present when
* MLK_CONFIG_CONTEXT_PARAMETER is defined; type set by
* MLK_CONFIG_CONTEXT_PARAMETER_TYPE.
*
* @retval 0 Success.
* @retval MLK_ERR_FAIL The 'hash check' @[FIPS203, Section 7.3]
* for the secret key failed.
* @retval MLK_ERR_OUT_OF_MEMORY MLK_CONFIG_CUSTOM_ALLOC_FREE was used and
* MLK_CUSTOM_ALLOC returned NULL.
*/
MLK_API_QUALIFIER
MLK_API_MUST_CHECK_RETURN_VALUE
int MLK_API_NAMESPACE(dec)(
uint8_t ss[MLKEM_BYTES],
const uint8_t ct[MLKEM_CIPHERTEXTBYTES(MLK_CONFIG_API_PARAMETER_SET)],
const uint8_t sk[MLKEM_SECRETKEYBYTES(MLK_CONFIG_API_PARAMETER_SET)]
#ifdef MLK_CONFIG_CONTEXT_PARAMETER
,
MLK_CONFIG_CONTEXT_PARAMETER_TYPE context
#endif
);
/**
* Implements modulus check mandated by FIPS 203, i.e., ensures that
* coefficients are in [0,q-1].
*
* @spec{Implements @[FIPS203, Section 7.2, 'modulus check'].}
*
* @param[in] pk Input public key, an array of
* MLKEM{512,768,1024}_PUBLICKEYBYTES bytes.
* @param context Application context. Only present when
* MLK_CONFIG_CONTEXT_PARAMETER is defined; type set by
* MLK_CONFIG_CONTEXT_PARAMETER_TYPE.
*
* @retval 0 Success.
* @retval MLK_ERR_FAIL Modulus check failed.
* @retval MLK_ERR_OUT_OF_MEMORY MLK_CONFIG_CUSTOM_ALLOC_FREE was used and
* MLK_CUSTOM_ALLOC returned NULL.
*/
MLK_API_QUALIFIER
MLK_API_MUST_CHECK_RETURN_VALUE
int MLK_API_NAMESPACE(check_pk)(
const uint8_t pk[MLKEM_PUBLICKEYBYTES(MLK_CONFIG_API_PARAMETER_SET)]
#ifdef MLK_CONFIG_CONTEXT_PARAMETER
,
MLK_CONFIG_CONTEXT_PARAMETER_TYPE context
#endif
);
/**
* Implements public key hash check mandated by FIPS 203, i.e., ensures that
* sk[768𝑘+32 ∶ 768𝑘+64] = H(pk) = H(sk[384𝑘 : 768𝑘+32]).
*
* @spec{Implements @[FIPS203, Section 7.3, 'hash check'].}
*
* @param[in] sk Input private key, an array of
* MLKEM{512,768,1024}_SECRETKEYBYTES bytes.
* @param context Application context. Only present when
* MLK_CONFIG_CONTEXT_PARAMETER is defined; type set by
* MLK_CONFIG_CONTEXT_PARAMETER_TYPE.
*
* @retval 0 Success.
* @retval MLK_ERR_FAIL Public key hash check failed.
* @retval MLK_ERR_OUT_OF_MEMORY MLK_CONFIG_CUSTOM_ALLOC_FREE was used and
* MLK_CUSTOM_ALLOC returned NULL.
*/
MLK_API_QUALIFIER
MLK_API_MUST_CHECK_RETURN_VALUE
int MLK_API_NAMESPACE(check_sk)(
const uint8_t sk[MLKEM_SECRETKEYBYTES(MLK_CONFIG_API_PARAMETER_SET)]
#ifdef MLK_CONFIG_CONTEXT_PARAMETER
,
MLK_CONFIG_CONTEXT_PARAMETER_TYPE context
#endif
);
#ifdef __cplusplus
}
#endif
/****************************** SUPERCOP API *********************************/
#if !defined(MLK_CONFIG_API_NO_SUPERCOP)
/* Export API in SUPERCOP naming scheme CRYPTO_xxx / crypto_kem_xxx */
#define CRYPTO_SECRETKEYBYTES MLKEM_SECRETKEYBYTES(MLK_CONFIG_API_PARAMETER_SET)
#define CRYPTO_PUBLICKEYBYTES MLKEM_PUBLICKEYBYTES(MLK_CONFIG_API_PARAMETER_SET)
#define CRYPTO_CIPHERTEXTBYTES \
MLKEM_CIPHERTEXTBYTES(MLK_CONFIG_API_PARAMETER_SET)
#define CRYPTO_SYMBYTES MLKEM_SYMBYTES
#define CRYPTO_BYTES MLKEM_BYTES
#define crypto_kem_keypair_derand MLK_API_NAMESPACE(keypair_derand)
#define crypto_kem_keypair MLK_API_NAMESPACE(keypair)
#define crypto_kem_enc_derand MLK_API_NAMESPACE(enc_derand)
#define crypto_kem_enc MLK_API_NAMESPACE(enc)
#define crypto_kem_dec MLK_API_NAMESPACE(dec)
#define crypto_kem_check_pk MLK_API_NAMESPACE(check_pk)
#define crypto_kem_check_sk MLK_API_NAMESPACE(check_sk)
#else /* !MLK_CONFIG_API_NO_SUPERCOP */
/* If the SUPERCOP API is not needed, we can undefine the various helper macros
* above. Otherwise, they are needed for lazy evaluation of crypto_kem_xxx. */
#if !defined(MLK_API_LEGACY_CONFIG)
#undef MLK_CONFIG_API_PARAMETER_SET
#undef MLK_CONFIG_API_NAMESPACE_PREFIX
#undef MLK_CONFIG_API_NO_SUPERCOP
#undef MLK_CONFIG_API_CONSTANTS_ONLY
#undef MLK_CONFIG_API_QUALIFIER
#endif /* !MLK_API_LEGACY_CONFIG */
#undef MLK_API_CONCAT
#undef MLK_API_CONCAT_
#undef MLK_API_CONCAT_UNDERSCORE
#undef MLK_API_NAMESPACE
#undef MLK_API_MUST_CHECK_RETURN_VALUE
#undef MLK_API_QUALIFIER
#endif /* MLK_CONFIG_API_NO_SUPERCOP */
#endif /* !MLK_CONFIG_API_CONSTANTS_ONLY */
/***************************** Memory Usage **********************************/
/*
* By default mlkem-native performs all memory allocations on the stack.
* Alternatively, mlkem-native supports custom allocation of large structures
* through the `MLK_CONFIG_CUSTOM_ALLOC_FREE` configuration option.
* See mlkem_native_config.h for details.
*
* `MLK_TOTAL_ALLOC_{512,768,1024}_{KEYPAIR,ENCAPS,DECAPS}` indicates the
* maximum (accumulative) allocation via MLK_ALLOC for each parameter set and
* operation. Note that some stack allocation remains even when using custom
* allocators, so these values are lower than total stack usage with the default
* stack-only allocation.
*
* These constants may be used to implement custom allocations using a
* fixed-sized buffer and a simple allocator (e.g., bump allocator).
*/
/* check-magic: off */
#define MLK_TOTAL_ALLOC_512_KEYPAIR_NO_PCT 5824
#define MLK_TOTAL_ALLOC_512_KEYPAIR_PCT 10048
#define MLK_TOTAL_ALLOC_512_ENCAPS 8384
#define MLK_TOTAL_ALLOC_512_DECAPS 9152
#define MLK_TOTAL_ALLOC_768_KEYPAIR_NO_PCT 10176
#define MLK_TOTAL_ALLOC_768_KEYPAIR_PCT 15552
#define MLK_TOTAL_ALLOC_768_ENCAPS 13248
#define MLK_TOTAL_ALLOC_768_DECAPS 14336
#define MLK_TOTAL_ALLOC_1024_KEYPAIR_NO_PCT 15552
#define MLK_TOTAL_ALLOC_1024_KEYPAIR_PCT 22400
#define MLK_TOTAL_ALLOC_1024_ENCAPS 19136
#define MLK_TOTAL_ALLOC_1024_DECAPS 20704
/* check-magic: on */
/*
* MLK_TOTAL_ALLOC_*_KEYPAIR adapts based on MLK_CONFIG_KEYGEN_PCT.
* For legacy config, we don't know which options are used, so assume
* the worst case (PCT enabled).
*/
#if defined(MLK_API_LEGACY_CONFIG) || defined(MLK_CONFIG_KEYGEN_PCT)
#define MLK_TOTAL_ALLOC_512_KEYPAIR MLK_TOTAL_ALLOC_512_KEYPAIR_PCT
#define MLK_TOTAL_ALLOC_768_KEYPAIR MLK_TOTAL_ALLOC_768_KEYPAIR_PCT
#define MLK_TOTAL_ALLOC_1024_KEYPAIR MLK_TOTAL_ALLOC_1024_KEYPAIR_PCT
#else
#define MLK_TOTAL_ALLOC_512_KEYPAIR MLK_TOTAL_ALLOC_512_KEYPAIR_NO_PCT
#define MLK_TOTAL_ALLOC_768_KEYPAIR MLK_TOTAL_ALLOC_768_KEYPAIR_NO_PCT
#define MLK_TOTAL_ALLOC_1024_KEYPAIR MLK_TOTAL_ALLOC_1024_KEYPAIR_NO_PCT
#endif
#define MLK_MAX3_(a, b, c) \
((a) > (b) ? ((a) > (c) ? (a) : (c)) : ((b) > (c) ? (b) : (c)))
/*
* `MLK_TOTAL_ALLOC_{512,768,1024}` is the maximum across all operations for
* each parameter set.
*/
#define MLK_TOTAL_ALLOC_512 \
MLK_MAX3_(MLK_TOTAL_ALLOC_512_KEYPAIR, MLK_TOTAL_ALLOC_512_ENCAPS, \
MLK_TOTAL_ALLOC_512_DECAPS)
#define MLK_TOTAL_ALLOC_768 \
MLK_MAX3_(MLK_TOTAL_ALLOC_768_KEYPAIR, MLK_TOTAL_ALLOC_768_ENCAPS, \
MLK_TOTAL_ALLOC_768_DECAPS)
#define MLK_TOTAL_ALLOC_1024 \
MLK_MAX3_(MLK_TOTAL_ALLOC_1024_KEYPAIR, MLK_TOTAL_ALLOC_1024_ENCAPS, \
MLK_TOTAL_ALLOC_1024_DECAPS)
#undef MLK_API_LEGACY_CONFIG
#endif /* !MLK_H */