/* * Copyright 2020-2023 The OpenSSL Project Authors. All Rights Reserved. * * Licensed under the Apache License 2.0 (the "License"). You may not use * this file except in compliance with the License. You can obtain a copy * in the file LICENSE in the source distribution or at * https://www.openssl.org/source/license.html */ /* * low level APIs are deprecated for public use, but still ok for * internal use. */ #include "internal/deprecated.h" #include #include #include #include #include #include #include /* PEM_BUFSIZE and public PEM functions */ #include #include #include #include "internal/cryptlib.h" /* ossl_assert() */ #include "internal/asn1.h" #include "crypto/dh.h" #include "crypto/dsa.h" #include "crypto/ec.h" #include "crypto/evp.h" #include "crypto/ecx.h" #include "crypto/rsa.h" #include "crypto/x509.h" #include "prov/bio.h" #include "prov/implementations.h" #include "endecoder_local.h" #include "internal/nelem.h" struct der2key_ctx_st; /* Forward declaration */ typedef int check_key_fn(void *, struct der2key_ctx_st *ctx); typedef void adjust_key_fn(void *, struct der2key_ctx_st *ctx); typedef void free_key_fn(void *); typedef void *d2i_PKCS8_fn(void **, const unsigned char **, long, struct der2key_ctx_st *); struct keytype_desc_st { const char *keytype_name; const OSSL_DISPATCH *fns; /* Keymgmt (to pilfer functions from) */ /* The input structure name */ const char *structure_name; /* * The EVP_PKEY_xxx type macro. Should be zero for type specific * structures, non-zero when the outermost structure is PKCS#8 or * SubjectPublicKeyInfo. This determines which of the function * pointers below will be used. */ int evp_type; /* The selection mask for OSSL_FUNC_decoder_does_selection() */ int selection_mask; /* For type specific decoders, we use the corresponding d2i */ d2i_of_void *d2i_private_key; /* From type-specific DER */ d2i_of_void *d2i_public_key; /* From type-specific DER */ d2i_of_void *d2i_key_params; /* From type-specific DER */ d2i_PKCS8_fn *d2i_PKCS8; /* Wrapped in a PrivateKeyInfo */ d2i_of_void *d2i_PUBKEY; /* Wrapped in a SubjectPublicKeyInfo */ /* * For any key, we may need to check that the key meets expectations. * This is useful when the same functions can decode several variants * of a key. */ check_key_fn *check_key; /* * For any key, we may need to make provider specific adjustments, such * as ensure the key carries the correct library context. */ adjust_key_fn *adjust_key; /* {type}_free() */ free_key_fn *free_key; }; /* * Context used for DER to key decoding. */ struct der2key_ctx_st { PROV_CTX *provctx; char propq[OSSL_MAX_PROPQUERY_SIZE]; const struct keytype_desc_st *desc; /* The selection that is passed to der2key_decode() */ int selection; /* Flag used to signal that a failure is fatal */ unsigned int flag_fatal : 1; }; typedef void *key_from_pkcs8_t(const PKCS8_PRIV_KEY_INFO *p8inf, OSSL_LIB_CTX *libctx, const char *propq); static void *der2key_decode_p8(const unsigned char **input_der, long input_der_len, struct der2key_ctx_st *ctx, key_from_pkcs8_t *key_from_pkcs8) { PKCS8_PRIV_KEY_INFO *p8inf = NULL; const X509_ALGOR *alg = NULL; void *key = NULL; if ((p8inf = d2i_PKCS8_PRIV_KEY_INFO(NULL, input_der, input_der_len)) != NULL && PKCS8_pkey_get0(NULL, NULL, NULL, &alg, p8inf) && OBJ_obj2nid(alg->algorithm) == ctx->desc->evp_type) key = key_from_pkcs8(p8inf, PROV_LIBCTX_OF(ctx->provctx), ctx->propq); PKCS8_PRIV_KEY_INFO_free(p8inf); return key; } /* ---------------------------------------------------------------------- */ static OSSL_FUNC_decoder_freectx_fn der2key_freectx; static OSSL_FUNC_decoder_decode_fn der2key_decode; static OSSL_FUNC_decoder_export_object_fn der2key_export_object; static OSSL_FUNC_decoder_settable_ctx_params_fn der2key_settable_ctx_params; static OSSL_FUNC_decoder_set_ctx_params_fn der2key_set_ctx_params; static struct der2key_ctx_st * der2key_newctx(void *provctx, const struct keytype_desc_st *desc) { struct der2key_ctx_st *ctx = OPENSSL_zalloc(sizeof(*ctx)); if (ctx != NULL) { ctx->provctx = provctx; ctx->desc = desc; } return ctx; } static const OSSL_PARAM *der2key_settable_ctx_params(ossl_unused void *provctx) { static const OSSL_PARAM settables[] = { OSSL_PARAM_utf8_string(OSSL_DECODER_PARAM_PROPERTIES, NULL, 0), OSSL_PARAM_END }; return settables; } static int der2key_set_ctx_params(void *vctx, const OSSL_PARAM params[]) { struct der2key_ctx_st *ctx = vctx; const OSSL_PARAM *p; char *str = ctx->propq; p = OSSL_PARAM_locate_const(params, OSSL_DECODER_PARAM_PROPERTIES); if (p != NULL && !OSSL_PARAM_get_utf8_string(p, &str, sizeof(ctx->propq))) return 0; return 1; } static void der2key_freectx(void *vctx) { struct der2key_ctx_st *ctx = vctx; OPENSSL_free(ctx); } static int der2key_check_selection(int selection, const struct keytype_desc_st *desc) { /* * The selections are kinda sorta "levels", i.e. each selection given * here is assumed to include those following. */ int checks[] = { OSSL_KEYMGMT_SELECT_PRIVATE_KEY, OSSL_KEYMGMT_SELECT_PUBLIC_KEY, OSSL_KEYMGMT_SELECT_ALL_PARAMETERS }; size_t i; /* The decoder implementations made here support guessing */ if (selection == 0) return 1; for (i = 0; i < OSSL_NELEM(checks); i++) { int check1 = (selection & checks[i]) != 0; int check2 = (desc->selection_mask & checks[i]) != 0; /* * If the caller asked for the currently checked bit(s), return * whether the decoder description says it's supported. */ if (check1) return check2; } /* This should be dead code, but just to be safe... */ return 0; } static int der2key_decode(void *vctx, OSSL_CORE_BIO *cin, int selection, OSSL_CALLBACK *data_cb, void *data_cbarg, OSSL_PASSPHRASE_CALLBACK *pw_cb, void *pw_cbarg) { struct der2key_ctx_st *ctx = vctx; unsigned char *der = NULL; const unsigned char *derp; long der_len = 0; void *key = NULL; int ok = 0; ctx->selection = selection; /* * The caller is allowed to specify 0 as a selection mark, to have the * structure and key type guessed. For type-specific structures, this * is not recommended, as some structures are very similar. * Note that 0 isn't the same as OSSL_KEYMGMT_SELECT_ALL, as the latter * signifies a private key structure, where everything else is assumed * to be present as well. */ if (selection == 0) selection = ctx->desc->selection_mask; if ((selection & ctx->desc->selection_mask) == 0) { ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_INVALID_ARGUMENT); return 0; } ok = ossl_read_der(ctx->provctx, cin, &der, &der_len); if (!ok) goto next; ok = 0; /* Assume that we fail */ ERR_set_mark(); if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0) { derp = der; if (ctx->desc->d2i_PKCS8 != NULL) { key = ctx->desc->d2i_PKCS8(NULL, &derp, der_len, ctx); if (ctx->flag_fatal) { ERR_clear_last_mark(); goto end; } } else if (ctx->desc->d2i_private_key != NULL) { key = ctx->desc->d2i_private_key(NULL, &derp, der_len); } if (key == NULL && ctx->selection != 0) { ERR_clear_last_mark(); goto next; } } if (key == NULL && (selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0) { derp = der; if (ctx->desc->d2i_PUBKEY != NULL) key = ctx->desc->d2i_PUBKEY(NULL, &derp, der_len); else if (ctx->desc->d2i_public_key != NULL) key = ctx->desc->d2i_public_key(NULL, &derp, der_len); if (key == NULL && ctx->selection != 0) { ERR_clear_last_mark(); goto next; } } if (key == NULL && (selection & OSSL_KEYMGMT_SELECT_ALL_PARAMETERS) != 0) { derp = der; if (ctx->desc->d2i_key_params != NULL) key = ctx->desc->d2i_key_params(NULL, &derp, der_len); if (key == NULL && ctx->selection != 0) { ERR_clear_last_mark(); goto next; } } if (key == NULL) ERR_clear_last_mark(); else ERR_pop_to_mark(); /* * Last minute check to see if this was the correct type of key. This * should never lead to a fatal error, i.e. the decoding itself was * correct, it was just an unexpected key type. This is generally for * classes of key types that have subtle variants, like RSA-PSS keys as * opposed to plain RSA keys. */ if (key != NULL && ctx->desc->check_key != NULL && !ctx->desc->check_key(key, ctx)) { ctx->desc->free_key(key); key = NULL; } if (key != NULL && ctx->desc->adjust_key != NULL) ctx->desc->adjust_key(key, ctx); next: /* * Indicated that we successfully decoded something, or not at all. * Ending up "empty handed" is not an error. */ ok = 1; /* * We free memory here so it's not held up during the callback, because * we know the process is recursive and the allocated chunks of memory * add up. */ OPENSSL_free(der); der = NULL; if (key != NULL) { OSSL_PARAM params[4]; int object_type = OSSL_OBJECT_PKEY; params[0] = OSSL_PARAM_construct_int(OSSL_OBJECT_PARAM_TYPE, &object_type); params[1] = OSSL_PARAM_construct_utf8_string(OSSL_OBJECT_PARAM_DATA_TYPE, (char *)ctx->desc->keytype_name, 0); /* The address of the key becomes the octet string */ params[2] = OSSL_PARAM_construct_octet_string(OSSL_OBJECT_PARAM_REFERENCE, &key, sizeof(key)); params[3] = OSSL_PARAM_construct_end(); ok = data_cb(params, data_cbarg); } end: ctx->desc->free_key(key); OPENSSL_free(der); return ok; } static int der2key_export_object(void *vctx, const void *reference, size_t reference_sz, OSSL_CALLBACK *export_cb, void *export_cbarg) { struct der2key_ctx_st *ctx = vctx; OSSL_FUNC_keymgmt_export_fn *export = ossl_prov_get_keymgmt_export(ctx->desc->fns); void *keydata; if (reference_sz == sizeof(keydata) && export != NULL) { int selection = ctx->selection; if (selection == 0) selection = OSSL_KEYMGMT_SELECT_ALL; /* The contents of the reference is the address to our object */ keydata = *(void **)reference; return export(keydata, selection, export_cb, export_cbarg); } return 0; } /* ---------------------------------------------------------------------- */ #ifndef OPENSSL_NO_DH # define dh_evp_type EVP_PKEY_DH # define dh_d2i_private_key NULL # define dh_d2i_public_key NULL # define dh_d2i_key_params (d2i_of_void *)d2i_DHparams static void *dh_d2i_PKCS8(void **key, const unsigned char **der, long der_len, struct der2key_ctx_st *ctx) { return der2key_decode_p8(der, der_len, ctx, (key_from_pkcs8_t *)ossl_dh_key_from_pkcs8); } # define dh_d2i_PUBKEY (d2i_of_void *)ossl_d2i_DH_PUBKEY # define dh_free (free_key_fn *)DH_free # define dh_check NULL static void dh_adjust(void *key, struct der2key_ctx_st *ctx) { ossl_dh_set0_libctx(key, PROV_LIBCTX_OF(ctx->provctx)); } # define dhx_evp_type EVP_PKEY_DHX # define dhx_d2i_private_key NULL # define dhx_d2i_public_key NULL # define dhx_d2i_key_params (d2i_of_void *)d2i_DHxparams # define dhx_d2i_PKCS8 dh_d2i_PKCS8 # define dhx_d2i_PUBKEY (d2i_of_void *)ossl_d2i_DHx_PUBKEY # define dhx_free (free_key_fn *)DH_free # define dhx_check NULL # define dhx_adjust dh_adjust #endif /* ---------------------------------------------------------------------- */ #ifndef OPENSSL_NO_DSA # define dsa_evp_type EVP_PKEY_DSA # define dsa_d2i_private_key (d2i_of_void *)d2i_DSAPrivateKey # define dsa_d2i_public_key (d2i_of_void *)d2i_DSAPublicKey # define dsa_d2i_key_params (d2i_of_void *)d2i_DSAparams static void *dsa_d2i_PKCS8(void **key, const unsigned char **der, long der_len, struct der2key_ctx_st *ctx) { return der2key_decode_p8(der, der_len, ctx, (key_from_pkcs8_t *)ossl_dsa_key_from_pkcs8); } # define dsa_d2i_PUBKEY (d2i_of_void *)ossl_d2i_DSA_PUBKEY # define dsa_free (free_key_fn *)DSA_free # define dsa_check NULL static void dsa_adjust(void *key, struct der2key_ctx_st *ctx) { ossl_dsa_set0_libctx(key, PROV_LIBCTX_OF(ctx->provctx)); } #endif /* ---------------------------------------------------------------------- */ #ifndef OPENSSL_NO_EC # define ec_evp_type EVP_PKEY_EC # define ec_d2i_private_key (d2i_of_void *)d2i_ECPrivateKey # define ec_d2i_public_key NULL # define ec_d2i_key_params (d2i_of_void *)d2i_ECParameters static void *ec_d2i_PKCS8(void **key, const unsigned char **der, long der_len, struct der2key_ctx_st *ctx) { return der2key_decode_p8(der, der_len, ctx, (key_from_pkcs8_t *)ossl_ec_key_from_pkcs8); } # define ec_d2i_PUBKEY (d2i_of_void *)d2i_EC_PUBKEY # define ec_free (free_key_fn *)EC_KEY_free static int ec_check(void *key, struct der2key_ctx_st *ctx) { /* We're trying to be clever by comparing two truths */ int sm2 = (EC_KEY_get_flags(key) & EC_FLAG_SM2_RANGE) != 0; return sm2 == (ctx->desc->evp_type == EVP_PKEY_SM2); } static void ec_adjust(void *key, struct der2key_ctx_st *ctx) { ossl_ec_key_set0_libctx(key, PROV_LIBCTX_OF(ctx->provctx)); } # ifndef OPENSSL_NO_ECX /* * ED25519, ED448, X25519, X448 only implement PKCS#8 and SubjectPublicKeyInfo, * so no d2i functions to be had. */ static void *ecx_d2i_PKCS8(void **key, const unsigned char **der, long der_len, struct der2key_ctx_st *ctx) { return der2key_decode_p8(der, der_len, ctx, (key_from_pkcs8_t *)ossl_ecx_key_from_pkcs8); } static void ecx_key_adjust(void *key, struct der2key_ctx_st *ctx) { ossl_ecx_key_set0_libctx(key, PROV_LIBCTX_OF(ctx->provctx)); } # define ed25519_evp_type EVP_PKEY_ED25519 # define ed25519_d2i_private_key NULL # define ed25519_d2i_public_key NULL # define ed25519_d2i_key_params NULL # define ed25519_d2i_PKCS8 ecx_d2i_PKCS8 # define ed25519_d2i_PUBKEY (d2i_of_void *)ossl_d2i_ED25519_PUBKEY # define ed25519_free (free_key_fn *)ossl_ecx_key_free # define ed25519_check NULL # define ed25519_adjust ecx_key_adjust # define ed448_evp_type EVP_PKEY_ED448 # define ed448_d2i_private_key NULL # define ed448_d2i_public_key NULL # define ed448_d2i_key_params NULL # define ed448_d2i_PKCS8 ecx_d2i_PKCS8 # define ed448_d2i_PUBKEY (d2i_of_void *)ossl_d2i_ED448_PUBKEY # define ed448_free (free_key_fn *)ossl_ecx_key_free # define ed448_check NULL # define ed448_adjust ecx_key_adjust # define x25519_evp_type EVP_PKEY_X25519 # define x25519_d2i_private_key NULL # define x25519_d2i_public_key NULL # define x25519_d2i_key_params NULL # define x25519_d2i_PKCS8 ecx_d2i_PKCS8 # define x25519_d2i_PUBKEY (d2i_of_void *)ossl_d2i_X25519_PUBKEY # define x25519_free (free_key_fn *)ossl_ecx_key_free # define x25519_check NULL # define x25519_adjust ecx_key_adjust # define x448_evp_type EVP_PKEY_X448 # define x448_d2i_private_key NULL # define x448_d2i_public_key NULL # define x448_d2i_key_params NULL # define x448_d2i_PKCS8 ecx_d2i_PKCS8 # define x448_d2i_PUBKEY (d2i_of_void *)ossl_d2i_X448_PUBKEY # define x448_free (free_key_fn *)ossl_ecx_key_free # define x448_check NULL # define x448_adjust ecx_key_adjust # endif /* OPENSSL_NO_ECX */ # ifndef OPENSSL_NO_SM2 # define sm2_evp_type EVP_PKEY_SM2 # define sm2_d2i_private_key (d2i_of_void *)d2i_ECPrivateKey # define sm2_d2i_public_key NULL # define sm2_d2i_key_params (d2i_of_void *)d2i_ECParameters static void *sm2_d2i_PKCS8(void **key, const unsigned char **der, long der_len, struct der2key_ctx_st *ctx) { return der2key_decode_p8(der, der_len, ctx, (key_from_pkcs8_t *)ossl_ec_key_from_pkcs8); } # define sm2_d2i_PUBKEY (d2i_of_void *)d2i_EC_PUBKEY # define sm2_free (free_key_fn *)EC_KEY_free # define sm2_check ec_check # define sm2_adjust ec_adjust # endif #endif /* ---------------------------------------------------------------------- */ #define rsa_evp_type EVP_PKEY_RSA #define rsa_d2i_private_key (d2i_of_void *)d2i_RSAPrivateKey #define rsa_d2i_public_key (d2i_of_void *)d2i_RSAPublicKey #define rsa_d2i_key_params NULL static void *rsa_d2i_PKCS8(void **key, const unsigned char **der, long der_len, struct der2key_ctx_st *ctx) { return der2key_decode_p8(der, der_len, ctx, (key_from_pkcs8_t *)ossl_rsa_key_from_pkcs8); } #define rsa_d2i_PUBKEY (d2i_of_void *)d2i_RSA_PUBKEY #define rsa_free (free_key_fn *)RSA_free static int rsa_check(void *key, struct der2key_ctx_st *ctx) { switch (RSA_test_flags(key, RSA_FLAG_TYPE_MASK)) { case RSA_FLAG_TYPE_RSA: return ctx->desc->evp_type == EVP_PKEY_RSA; case RSA_FLAG_TYPE_RSASSAPSS: return ctx->desc->evp_type == EVP_PKEY_RSA_PSS; } /* Currently unsupported RSA key type */ return 0; } static void rsa_adjust(void *key, struct der2key_ctx_st *ctx) { ossl_rsa_set0_libctx(key, PROV_LIBCTX_OF(ctx->provctx)); } #define rsapss_evp_type EVP_PKEY_RSA_PSS #define rsapss_d2i_private_key (d2i_of_void *)d2i_RSAPrivateKey #define rsapss_d2i_public_key (d2i_of_void *)d2i_RSAPublicKey #define rsapss_d2i_key_params NULL #define rsapss_d2i_PKCS8 rsa_d2i_PKCS8 #define rsapss_d2i_PUBKEY (d2i_of_void *)d2i_RSA_PUBKEY #define rsapss_free (free_key_fn *)RSA_free #define rsapss_check rsa_check #define rsapss_adjust rsa_adjust /* ---------------------------------------------------------------------- */ /* * The DO_ macros help define the selection mask and the method functions * for each kind of object we want to decode. */ #define DO_type_specific_keypair(keytype) \ "type-specific", keytype##_evp_type, \ ( OSSL_KEYMGMT_SELECT_KEYPAIR ), \ keytype##_d2i_private_key, \ keytype##_d2i_public_key, \ NULL, \ NULL, \ NULL, \ keytype##_check, \ keytype##_adjust, \ keytype##_free #define DO_type_specific_pub(keytype) \ "type-specific", keytype##_evp_type, \ ( OSSL_KEYMGMT_SELECT_PUBLIC_KEY ), \ NULL, \ keytype##_d2i_public_key, \ NULL, \ NULL, \ NULL, \ keytype##_check, \ keytype##_adjust, \ keytype##_free #define DO_type_specific_priv(keytype) \ "type-specific", keytype##_evp_type, \ ( OSSL_KEYMGMT_SELECT_PRIVATE_KEY ), \ keytype##_d2i_private_key, \ NULL, \ NULL, \ NULL, \ NULL, \ keytype##_check, \ keytype##_adjust, \ keytype##_free #define DO_type_specific_params(keytype) \ "type-specific", keytype##_evp_type, \ ( OSSL_KEYMGMT_SELECT_ALL_PARAMETERS ), \ NULL, \ NULL, \ keytype##_d2i_key_params, \ NULL, \ NULL, \ keytype##_check, \ keytype##_adjust, \ keytype##_free #define DO_type_specific(keytype) \ "type-specific", keytype##_evp_type, \ ( OSSL_KEYMGMT_SELECT_ALL ), \ keytype##_d2i_private_key, \ keytype##_d2i_public_key, \ keytype##_d2i_key_params, \ NULL, \ NULL, \ keytype##_check, \ keytype##_adjust, \ keytype##_free #define DO_type_specific_no_pub(keytype) \ "type-specific", keytype##_evp_type, \ ( OSSL_KEYMGMT_SELECT_PRIVATE_KEY \ | OSSL_KEYMGMT_SELECT_ALL_PARAMETERS ), \ keytype##_d2i_private_key, \ NULL, \ keytype##_d2i_key_params, \ NULL, \ NULL, \ keytype##_check, \ keytype##_adjust, \ keytype##_free #define DO_PrivateKeyInfo(keytype) \ "PrivateKeyInfo", keytype##_evp_type, \ ( OSSL_KEYMGMT_SELECT_PRIVATE_KEY ), \ NULL, \ NULL, \ NULL, \ keytype##_d2i_PKCS8, \ NULL, \ keytype##_check, \ keytype##_adjust, \ keytype##_free #define DO_SubjectPublicKeyInfo(keytype) \ "SubjectPublicKeyInfo", keytype##_evp_type, \ ( OSSL_KEYMGMT_SELECT_PUBLIC_KEY ), \ NULL, \ NULL, \ NULL, \ NULL, \ keytype##_d2i_PUBKEY, \ keytype##_check, \ keytype##_adjust, \ keytype##_free #define DO_DH(keytype) \ "DH", keytype##_evp_type, \ ( OSSL_KEYMGMT_SELECT_ALL_PARAMETERS ), \ NULL, \ NULL, \ keytype##_d2i_key_params, \ NULL, \ NULL, \ keytype##_check, \ keytype##_adjust, \ keytype##_free #define DO_DHX(keytype) \ "DHX", keytype##_evp_type, \ ( OSSL_KEYMGMT_SELECT_ALL_PARAMETERS ), \ NULL, \ NULL, \ keytype##_d2i_key_params, \ NULL, \ NULL, \ keytype##_check, \ keytype##_adjust, \ keytype##_free #define DO_DSA(keytype) \ "DSA", keytype##_evp_type, \ ( OSSL_KEYMGMT_SELECT_ALL ), \ keytype##_d2i_private_key, \ keytype##_d2i_public_key, \ keytype##_d2i_key_params, \ NULL, \ NULL, \ keytype##_check, \ keytype##_adjust, \ keytype##_free #define DO_EC(keytype) \ "EC", keytype##_evp_type, \ ( OSSL_KEYMGMT_SELECT_PRIVATE_KEY \ | OSSL_KEYMGMT_SELECT_ALL_PARAMETERS ), \ keytype##_d2i_private_key, \ NULL, \ keytype##_d2i_key_params, \ NULL, \ NULL, \ keytype##_check, \ keytype##_adjust, \ keytype##_free #define DO_RSA(keytype) \ "RSA", keytype##_evp_type, \ ( OSSL_KEYMGMT_SELECT_KEYPAIR ), \ keytype##_d2i_private_key, \ keytype##_d2i_public_key, \ NULL, \ NULL, \ NULL, \ keytype##_check, \ keytype##_adjust, \ keytype##_free /* * MAKE_DECODER is the single driver for creating OSSL_DISPATCH tables. * It takes the following arguments: * * keytype_name The implementation key type as a string. * keytype The implementation key type. This must correspond exactly * to our existing keymgmt keytype names... in other words, * there must exist an ossl_##keytype##_keymgmt_functions. * type The type name for the set of functions that implement the * decoder for the key type. This isn't necessarily the same * as keytype. For example, the key types ed25519, ed448, * x25519 and x448 are all handled by the same functions with * the common type name ecx. * kind The kind of support to implement. This translates into * the DO_##kind macros above, to populate the keytype_desc_st * structure. */ #define MAKE_DECODER(keytype_name, keytype, type, kind) \ static const struct keytype_desc_st kind##_##keytype##_desc = \ { keytype_name, ossl_##keytype##_keymgmt_functions, \ DO_##kind(keytype) }; \ \ static OSSL_FUNC_decoder_newctx_fn kind##_der2##keytype##_newctx; \ \ static void *kind##_der2##keytype##_newctx(void *provctx) \ { \ return der2key_newctx(provctx, &kind##_##keytype##_desc); \ } \ static int kind##_der2##keytype##_does_selection(void *provctx, \ int selection) \ { \ return der2key_check_selection(selection, \ &kind##_##keytype##_desc); \ } \ const OSSL_DISPATCH \ ossl_##kind##_der_to_##keytype##_decoder_functions[] = { \ { OSSL_FUNC_DECODER_NEWCTX, \ (void (*)(void))kind##_der2##keytype##_newctx }, \ { OSSL_FUNC_DECODER_FREECTX, \ (void (*)(void))der2key_freectx }, \ { OSSL_FUNC_DECODER_DOES_SELECTION, \ (void (*)(void))kind##_der2##keytype##_does_selection }, \ { OSSL_FUNC_DECODER_DECODE, \ (void (*)(void))der2key_decode }, \ { OSSL_FUNC_DECODER_EXPORT_OBJECT, \ (void (*)(void))der2key_export_object }, \ { OSSL_FUNC_DECODER_SETTABLE_CTX_PARAMS, \ (void (*)(void))der2key_settable_ctx_params }, \ { OSSL_FUNC_DECODER_SET_CTX_PARAMS, \ (void (*)(void))der2key_set_ctx_params }, \ OSSL_DISPATCH_END \ } #ifndef OPENSSL_NO_DH MAKE_DECODER("DH", dh, dh, PrivateKeyInfo); MAKE_DECODER("DH", dh, dh, SubjectPublicKeyInfo); MAKE_DECODER("DH", dh, dh, type_specific_params); MAKE_DECODER("DH", dh, dh, DH); MAKE_DECODER("DHX", dhx, dhx, PrivateKeyInfo); MAKE_DECODER("DHX", dhx, dhx, SubjectPublicKeyInfo); MAKE_DECODER("DHX", dhx, dhx, type_specific_params); MAKE_DECODER("DHX", dhx, dhx, DHX); #endif #ifndef OPENSSL_NO_DSA MAKE_DECODER("DSA", dsa, dsa, PrivateKeyInfo); MAKE_DECODER("DSA", dsa, dsa, SubjectPublicKeyInfo); MAKE_DECODER("DSA", dsa, dsa, type_specific); MAKE_DECODER("DSA", dsa, dsa, DSA); #endif #ifndef OPENSSL_NO_EC MAKE_DECODER("EC", ec, ec, PrivateKeyInfo); MAKE_DECODER("EC", ec, ec, SubjectPublicKeyInfo); MAKE_DECODER("EC", ec, ec, type_specific_no_pub); MAKE_DECODER("EC", ec, ec, EC); # ifndef OPENSSL_NO_ECX MAKE_DECODER("X25519", x25519, ecx, PrivateKeyInfo); MAKE_DECODER("X25519", x25519, ecx, SubjectPublicKeyInfo); MAKE_DECODER("X448", x448, ecx, PrivateKeyInfo); MAKE_DECODER("X448", x448, ecx, SubjectPublicKeyInfo); MAKE_DECODER("ED25519", ed25519, ecx, PrivateKeyInfo); MAKE_DECODER("ED25519", ed25519, ecx, SubjectPublicKeyInfo); MAKE_DECODER("ED448", ed448, ecx, PrivateKeyInfo); MAKE_DECODER("ED448", ed448, ecx, SubjectPublicKeyInfo); # endif # ifndef OPENSSL_NO_SM2 MAKE_DECODER("SM2", sm2, ec, PrivateKeyInfo); MAKE_DECODER("SM2", sm2, ec, SubjectPublicKeyInfo); MAKE_DECODER("SM2", sm2, sm2, type_specific_no_pub); # endif #endif MAKE_DECODER("RSA", rsa, rsa, PrivateKeyInfo); MAKE_DECODER("RSA", rsa, rsa, SubjectPublicKeyInfo); MAKE_DECODER("RSA", rsa, rsa, type_specific_keypair); MAKE_DECODER("RSA", rsa, rsa, RSA); MAKE_DECODER("RSA-PSS", rsapss, rsapss, PrivateKeyInfo); MAKE_DECODER("RSA-PSS", rsapss, rsapss, SubjectPublicKeyInfo);