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/**
* \file mbedtls/config_adjust_legacy_crypto.h
* \brief Adjust legacy configuration configuration
*
* Automatically enable certain dependencies. Generally, MBEDLTS_xxx
* configurations need to be explicitly enabled by the user: enabling
* MBEDTLS_xxx_A but not MBEDTLS_xxx_B when A requires B results in a
* compilation error. However, we do automatically enable certain options
* in some circumstances. One case is if MBEDTLS_xxx_B is an internal option
* used to identify parts of a module that are used by other module, and we
* don't want to make the symbol MBEDTLS_xxx_B part of the public API.
* Another case is if A didn't depend on B in earlier versions, and we
* want to use B in A but we need to preserve backward compatibility with
* configurations that explicitly activate MBEDTLS_xxx_A but not
* MBEDTLS_xxx_B.
*/
/*
* Copyright The Mbed TLS Contributors
* SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
*/
#ifndef MBEDTLS_CONFIG_ADJUST_LEGACY_CRYPTO_H
#define MBEDTLS_CONFIG_ADJUST_LEGACY_CRYPTO_H
/* Auto-enable MBEDTLS_MD_LIGHT based on MBEDTLS_MD_C.
* This allows checking for MD_LIGHT rather than MD_LIGHT || MD_C.
*/
#if defined(MBEDTLS_MD_C)
#define MBEDTLS_MD_LIGHT
#endif
/* Auto-enable MBEDTLS_MD_LIGHT if needed by a module that didn't require it
* in a previous release, to ensure backwards compatibility.
*/
#if defined(MBEDTLS_ECJPAKE_C) || \
defined(MBEDTLS_PEM_PARSE_C) || \
defined(MBEDTLS_ENTROPY_C) || \
defined(MBEDTLS_PK_C) || \
defined(MBEDTLS_PKCS12_C) || \
defined(MBEDTLS_RSA_C) || \
defined(MBEDTLS_SSL_TLS_C) || \
defined(MBEDTLS_X509_USE_C) || \
defined(MBEDTLS_X509_CREATE_C)
#define MBEDTLS_MD_LIGHT
#endif
/* MBEDTLS_ECP_LIGHT is auto-enabled by the following symbols:
* - MBEDTLS_ECP_C because now it consists of MBEDTLS_ECP_LIGHT plus functions
* for curve arithmetic. As a consequence if MBEDTLS_ECP_C is required for
* some reason, then MBEDTLS_ECP_LIGHT should be enabled as well.
* - MBEDTLS_PK_PARSE_EC_EXTENDED and MBEDTLS_PK_PARSE_EC_COMPRESSED because
* these features are not supported in PSA so the only way to have them is
* to enable the built-in solution.
* Both of them are temporary dependencies:
* - PK_PARSE_EC_EXTENDED will be removed after #7779 and #7789
* - support for compressed points should also be added to PSA, but in this
* case there is no associated issue to track it yet.
* - PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_DERIVE because Weierstrass key derivation
* still depends on ECP_LIGHT.
* - PK_C + USE_PSA + PSA_WANT_ALG_ECDSA is a temporary dependency which will
* be fixed by #7453.
*/
#if defined(MBEDTLS_ECP_C) || \
defined(MBEDTLS_PK_PARSE_EC_EXTENDED) || \
defined(MBEDTLS_PK_PARSE_EC_COMPRESSED) || \
defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR_DERIVE)
#define MBEDTLS_ECP_LIGHT
#endif
/* MBEDTLS_PK_PARSE_EC_COMPRESSED is introduced in MbedTLS version 3.5, while
* in previous version compressed points were automatically supported as long
* as PK_PARSE_C and ECP_C were enabled. As a consequence, for backward
* compatibility, we auto-enable PK_PARSE_EC_COMPRESSED when these conditions
* are met. */
#if defined(MBEDTLS_PK_PARSE_C) && defined(MBEDTLS_ECP_C)
#define MBEDTLS_PK_PARSE_EC_COMPRESSED
#endif
/* Helper symbol to state that there is support for ECDH, either through
* library implementation (ECDH_C) or through PSA. */
#if (defined(MBEDTLS_USE_PSA_CRYPTO) && defined(PSA_WANT_ALG_ECDH)) || \
(!defined(MBEDTLS_USE_PSA_CRYPTO) && defined(MBEDTLS_ECDH_C))
#define MBEDTLS_CAN_ECDH
#endif
/* PK module can achieve ECDSA functionalities by means of either software
* implementations (ECDSA_C) or through a PSA driver. The following defines
* are meant to list these capabilities in a general way which abstracts how
* they are implemented under the hood. */
#if !defined(MBEDTLS_USE_PSA_CRYPTO)
#if defined(MBEDTLS_ECDSA_C)
#define MBEDTLS_PK_CAN_ECDSA_SIGN
#define MBEDTLS_PK_CAN_ECDSA_VERIFY
#endif /* MBEDTLS_ECDSA_C */
#else /* MBEDTLS_USE_PSA_CRYPTO */
#if defined(PSA_WANT_ALG_ECDSA)
#if defined(PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_BASIC)
#define MBEDTLS_PK_CAN_ECDSA_SIGN
#endif /* PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_BASIC */
#if defined(PSA_WANT_KEY_TYPE_ECC_PUBLIC_KEY)
#define MBEDTLS_PK_CAN_ECDSA_VERIFY
#endif /* PSA_WANT_KEY_TYPE_ECC_PUBLIC_KEY */
#endif /* PSA_WANT_ALG_ECDSA */
#endif /* MBEDTLS_USE_PSA_CRYPTO */
#if defined(MBEDTLS_PK_CAN_ECDSA_VERIFY) || defined(MBEDTLS_PK_CAN_ECDSA_SIGN)
#define MBEDTLS_PK_CAN_ECDSA_SOME
#endif
/* If MBEDTLS_PSA_CRYPTO_C is defined, make sure MBEDTLS_PSA_CRYPTO_CLIENT
* is defined as well to include all PSA code.
*/
#if defined(MBEDTLS_PSA_CRYPTO_C)
#define MBEDTLS_PSA_CRYPTO_CLIENT
#endif /* MBEDTLS_PSA_CRYPTO_C */
/* The PK wrappers need pk_write functions to format RSA key objects
* when they are dispatching to the PSA API. This happens under USE_PSA_CRYPTO,
* and also even without USE_PSA_CRYPTO for mbedtls_pk_sign_ext(). */
#if defined(MBEDTLS_PSA_CRYPTO_C) && defined(MBEDTLS_RSA_C)
#define MBEDTLS_PK_C
#define MBEDTLS_PK_WRITE_C
#define MBEDTLS_PK_PARSE_C
#endif
/* Helpers to state that each key is supported either on the builtin or PSA side. */
#if defined(MBEDTLS_ECP_DP_SECP521R1_ENABLED) || defined(PSA_WANT_ECC_SECP_R1_521)
#define MBEDTLS_ECP_HAVE_SECP521R1
#endif
#if defined(MBEDTLS_ECP_DP_BP512R1_ENABLED) || defined(PSA_WANT_ECC_BRAINPOOL_P_R1_512)
#define MBEDTLS_ECP_HAVE_BP512R1
#endif
#if defined(MBEDTLS_ECP_DP_CURVE448_ENABLED) || defined(PSA_WANT_ECC_MONTGOMERY_448)
#define MBEDTLS_ECP_HAVE_CURVE448
#endif
#if defined(MBEDTLS_ECP_DP_BP384R1_ENABLED) || defined(PSA_WANT_ECC_BRAINPOOL_P_R1_384)
#define MBEDTLS_ECP_HAVE_BP384R1
#endif
#if defined(MBEDTLS_ECP_DP_SECP384R1_ENABLED) || defined(PSA_WANT_ECC_SECP_R1_384)
#define MBEDTLS_ECP_HAVE_SECP384R1
#endif
#if defined(MBEDTLS_ECP_DP_BP256R1_ENABLED) || defined(PSA_WANT_ECC_BRAINPOOL_P_R1_256)
#define MBEDTLS_ECP_HAVE_BP256R1
#endif
#if defined(MBEDTLS_ECP_DP_SECP256K1_ENABLED) || defined(PSA_WANT_ECC_SECP_K1_256)
#define MBEDTLS_ECP_HAVE_SECP256K1
#endif
#if defined(MBEDTLS_ECP_DP_SECP256R1_ENABLED) || defined(PSA_WANT_ECC_SECP_R1_256)
#define MBEDTLS_ECP_HAVE_SECP256R1
#endif
#if defined(MBEDTLS_ECP_DP_CURVE25519_ENABLED) || defined(PSA_WANT_ECC_MONTGOMERY_255)
#define MBEDTLS_ECP_HAVE_CURVE25519
#endif
#if defined(MBEDTLS_ECP_DP_SECP224K1_ENABLED) || defined(PSA_WANT_ECC_SECP_K1_224)
#define MBEDTLS_ECP_HAVE_SECP224K1
#endif
#if defined(MBEDTLS_ECP_DP_SECP224R1_ENABLED) || defined(PSA_WANT_ECC_SECP_R1_224)
#define MBEDTLS_ECP_HAVE_SECP224R1
#endif
#if defined(MBEDTLS_ECP_DP_SECP192K1_ENABLED) || defined(PSA_WANT_ECC_SECP_K1_192)
#define MBEDTLS_ECP_HAVE_SECP192K1
#endif
#if defined(MBEDTLS_ECP_DP_SECP192R1_ENABLED) || defined(PSA_WANT_ECC_SECP_R1_192)
#define MBEDTLS_ECP_HAVE_SECP192R1
#endif
/* Helper symbol to state that the PK module has support for EC keys. This
* can either be provided through the legacy ECP solution or through the
* PSA friendly MBEDTLS_PK_USE_PSA_EC_DATA (see pk.h for its description). */
#if defined(MBEDTLS_ECP_C) || \
(defined(MBEDTLS_USE_PSA_CRYPTO) && defined(PSA_WANT_KEY_TYPE_ECC_PUBLIC_KEY))
#define MBEDTLS_PK_HAVE_ECC_KEYS
#endif /* MBEDTLS_PK_USE_PSA_EC_DATA || MBEDTLS_ECP_C */
/* Historically pkparse did not check the CBC padding when decrypting
* a key. This was a bug, which is now fixed. As a consequence, pkparse
* now needs PKCS7 padding support, but existing configurations might not
* enable it, so we enable it here. */
#if defined(MBEDTLS_PK_PARSE_C) && defined(MBEDTLS_PKCS5_C) && defined(MBEDTLS_CIPHER_MODE_CBC)
#define MBEDTLS_CIPHER_PADDING_PKCS7
#endif
#endif /* MBEDTLS_CONFIG_ADJUST_LEGACY_CRYPTO_H */
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