/* * Copyright 2000-2022 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 */ #include #include "internal/refcount.h" #define EVP_CTRL_RET_UNSUPPORTED -1 struct evp_md_ctx_st { const EVP_MD *reqdigest; /* The original requested digest */ const EVP_MD *digest; ENGINE *engine; /* functional reference if 'digest' is * ENGINE-provided */ unsigned long flags; void *md_data; /* Public key context for sign/verify */ EVP_PKEY_CTX *pctx; /* Update function: usually copied from EVP_MD */ int (*update) (EVP_MD_CTX *ctx, const void *data, size_t count); /* * Opaque ctx returned from a providers digest algorithm implementation * OSSL_FUNC_digest_newctx() */ void *algctx; EVP_MD *fetched_digest; } /* EVP_MD_CTX */ ; struct evp_cipher_ctx_st { const EVP_CIPHER *cipher; ENGINE *engine; /* functional reference if 'cipher' is * ENGINE-provided */ int encrypt; /* encrypt or decrypt */ int buf_len; /* number we have left */ unsigned char oiv[EVP_MAX_IV_LENGTH]; /* original iv */ unsigned char iv[EVP_MAX_IV_LENGTH]; /* working iv */ unsigned char buf[EVP_MAX_BLOCK_LENGTH]; /* saved partial block */ int num; /* used by cfb/ofb/ctr mode */ /* FIXME: Should this even exist? It appears unused */ void *app_data; /* application stuff */ int key_len; /* May change for variable length cipher */ int iv_len; /* IV length */ unsigned long flags; /* Various flags */ void *cipher_data; /* per EVP data */ int final_used; int block_mask; unsigned char final[EVP_MAX_BLOCK_LENGTH]; /* possible final block */ /* * Opaque ctx returned from a providers cipher algorithm implementation * OSSL_FUNC_cipher_newctx() */ void *algctx; EVP_CIPHER *fetched_cipher; } /* EVP_CIPHER_CTX */ ; struct evp_mac_ctx_st { EVP_MAC *meth; /* Method structure */ /* * Opaque ctx returned from a providers MAC algorithm implementation * OSSL_FUNC_mac_newctx() */ void *algctx; } /* EVP_MAC_CTX */; struct evp_kdf_ctx_st { EVP_KDF *meth; /* Method structure */ /* * Opaque ctx returned from a providers KDF algorithm implementation * OSSL_FUNC_kdf_newctx() */ void *algctx; } /* EVP_KDF_CTX */ ; struct evp_rand_ctx_st { EVP_RAND *meth; /* Method structure */ /* * Opaque ctx returned from a providers rand algorithm implementation * OSSL_FUNC_rand_newctx() */ void *algctx; EVP_RAND_CTX *parent; /* Parent EVP_RAND or NULL if none */ CRYPTO_REF_COUNT refcnt; /* Context reference count */ CRYPTO_RWLOCK *refcnt_lock; } /* EVP_RAND_CTX */ ; struct evp_keymgmt_st { int id; /* libcrypto internal */ int name_id; char *type_name; const char *description; OSSL_PROVIDER *prov; CRYPTO_REF_COUNT refcnt; CRYPTO_RWLOCK *lock; /* Constructor(s), destructor, information */ OSSL_FUNC_keymgmt_new_fn *new; OSSL_FUNC_keymgmt_free_fn *free; OSSL_FUNC_keymgmt_get_params_fn *get_params; OSSL_FUNC_keymgmt_gettable_params_fn *gettable_params; OSSL_FUNC_keymgmt_set_params_fn *set_params; OSSL_FUNC_keymgmt_settable_params_fn *settable_params; /* Generation, a complex constructor */ OSSL_FUNC_keymgmt_gen_init_fn *gen_init; OSSL_FUNC_keymgmt_gen_set_template_fn *gen_set_template; OSSL_FUNC_keymgmt_gen_set_params_fn *gen_set_params; OSSL_FUNC_keymgmt_gen_settable_params_fn *gen_settable_params; OSSL_FUNC_keymgmt_gen_fn *gen; OSSL_FUNC_keymgmt_gen_cleanup_fn *gen_cleanup; OSSL_FUNC_keymgmt_load_fn *load; /* Key object checking */ OSSL_FUNC_keymgmt_query_operation_name_fn *query_operation_name; OSSL_FUNC_keymgmt_has_fn *has; OSSL_FUNC_keymgmt_validate_fn *validate; OSSL_FUNC_keymgmt_match_fn *match; /* Import and export routines */ OSSL_FUNC_keymgmt_import_fn *import; OSSL_FUNC_keymgmt_import_types_fn *import_types; OSSL_FUNC_keymgmt_import_types_ex_fn *import_types_ex; OSSL_FUNC_keymgmt_export_fn *export; OSSL_FUNC_keymgmt_export_types_fn *export_types; OSSL_FUNC_keymgmt_export_types_ex_fn *export_types_ex; OSSL_FUNC_keymgmt_dup_fn *dup; } /* EVP_KEYMGMT */ ; struct evp_keyexch_st { int name_id; char *type_name; const char *description; OSSL_PROVIDER *prov; CRYPTO_REF_COUNT refcnt; CRYPTO_RWLOCK *lock; OSSL_FUNC_keyexch_newctx_fn *newctx; OSSL_FUNC_keyexch_init_fn *init; OSSL_FUNC_keyexch_set_peer_fn *set_peer; OSSL_FUNC_keyexch_derive_fn *derive; OSSL_FUNC_keyexch_freectx_fn *freectx; OSSL_FUNC_keyexch_dupctx_fn *dupctx; OSSL_FUNC_keyexch_set_ctx_params_fn *set_ctx_params; OSSL_FUNC_keyexch_settable_ctx_params_fn *settable_ctx_params; OSSL_FUNC_keyexch_get_ctx_params_fn *get_ctx_params; OSSL_FUNC_keyexch_gettable_ctx_params_fn *gettable_ctx_params; } /* EVP_KEYEXCH */; struct evp_signature_st { int name_id; char *type_name; const char *description; OSSL_PROVIDER *prov; CRYPTO_REF_COUNT refcnt; CRYPTO_RWLOCK *lock; OSSL_FUNC_signature_newctx_fn *newctx; OSSL_FUNC_signature_sign_init_fn *sign_init; OSSL_FUNC_signature_sign_fn *sign; OSSL_FUNC_signature_verify_init_fn *verify_init; OSSL_FUNC_signature_verify_fn *verify; OSSL_FUNC_signature_verify_recover_init_fn *verify_recover_init; OSSL_FUNC_signature_verify_recover_fn *verify_recover; OSSL_FUNC_signature_digest_sign_init_fn *digest_sign_init; OSSL_FUNC_signature_digest_sign_update_fn *digest_sign_update; OSSL_FUNC_signature_digest_sign_final_fn *digest_sign_final; OSSL_FUNC_signature_digest_sign_fn *digest_sign; OSSL_FUNC_signature_digest_verify_init_fn *digest_verify_init; OSSL_FUNC_signature_digest_verify_update_fn *digest_verify_update; OSSL_FUNC_signature_digest_verify_final_fn *digest_verify_final; OSSL_FUNC_signature_digest_verify_fn *digest_verify; OSSL_FUNC_signature_freectx_fn *freectx; OSSL_FUNC_signature_dupctx_fn *dupctx; OSSL_FUNC_signature_get_ctx_params_fn *get_ctx_params; OSSL_FUNC_signature_gettable_ctx_params_fn *gettable_ctx_params; OSSL_FUNC_signature_set_ctx_params_fn *set_ctx_params; OSSL_FUNC_signature_settable_ctx_params_fn *settable_ctx_params; OSSL_FUNC_signature_get_ctx_md_params_fn *get_ctx_md_params; OSSL_FUNC_signature_gettable_ctx_md_params_fn *gettable_ctx_md_params; OSSL_FUNC_signature_set_ctx_md_params_fn *set_ctx_md_params; OSSL_FUNC_signature_settable_ctx_md_params_fn *settable_ctx_md_params; } /* EVP_SIGNATURE */; struct evp_asym_cipher_st { int name_id; char *type_name; const char *description; OSSL_PROVIDER *prov; CRYPTO_REF_COUNT refcnt; CRYPTO_RWLOCK *lock; OSSL_FUNC_asym_cipher_newctx_fn *newctx; OSSL_FUNC_asym_cipher_encrypt_init_fn *encrypt_init; OSSL_FUNC_asym_cipher_encrypt_fn *encrypt; OSSL_FUNC_asym_cipher_decrypt_init_fn *decrypt_init; OSSL_FUNC_asym_cipher_decrypt_fn *decrypt; OSSL_FUNC_asym_cipher_freectx_fn *freectx; OSSL_FUNC_asym_cipher_dupctx_fn *dupctx; OSSL_FUNC_asym_cipher_get_ctx_params_fn *get_ctx_params; OSSL_FUNC_asym_cipher_gettable_ctx_params_fn *gettable_ctx_params; OSSL_FUNC_asym_cipher_set_ctx_params_fn *set_ctx_params; OSSL_FUNC_asym_cipher_settable_ctx_params_fn *settable_ctx_params; } /* EVP_ASYM_CIPHER */; struct evp_kem_st { int name_id; char *type_name; const char *description; OSSL_PROVIDER *prov; CRYPTO_REF_COUNT refcnt; CRYPTO_RWLOCK *lock; OSSL_FUNC_kem_newctx_fn *newctx; OSSL_FUNC_kem_encapsulate_init_fn *encapsulate_init; OSSL_FUNC_kem_encapsulate_fn *encapsulate; OSSL_FUNC_kem_decapsulate_init_fn *decapsulate_init; OSSL_FUNC_kem_decapsulate_fn *decapsulate; OSSL_FUNC_kem_freectx_fn *freectx; OSSL_FUNC_kem_dupctx_fn *dupctx; OSSL_FUNC_kem_get_ctx_params_fn *get_ctx_params; OSSL_FUNC_kem_gettable_ctx_params_fn *gettable_ctx_params; OSSL_FUNC_kem_set_ctx_params_fn *set_ctx_params; OSSL_FUNC_kem_settable_ctx_params_fn *settable_ctx_params; OSSL_FUNC_kem_auth_encapsulate_init_fn *auth_encapsulate_init; OSSL_FUNC_kem_auth_decapsulate_init_fn *auth_decapsulate_init; } /* EVP_KEM */; int PKCS5_v2_PBKDF2_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen, ASN1_TYPE *param, const EVP_CIPHER *c, const EVP_MD *md, int en_de); int PKCS5_v2_PBKDF2_keyivgen_ex(EVP_CIPHER_CTX *ctx, const char *pass, int passlen, ASN1_TYPE *param, const EVP_CIPHER *c, const EVP_MD *md, int en_de, OSSL_LIB_CTX *libctx, const char *propq); struct evp_Encode_Ctx_st { /* number saved in a partial encode/decode */ int num; /* * The length is either the output line length (in input bytes) or the * shortest input line length that is ok. Once decoding begins, the * length is adjusted up each time a longer line is decoded */ int length; /* data to encode */ unsigned char enc_data[80]; /* number read on current line */ int line_num; unsigned int flags; }; typedef struct evp_pbe_st EVP_PBE_CTL; DEFINE_STACK_OF(EVP_PBE_CTL) int ossl_is_partially_overlapping(const void *ptr1, const void *ptr2, int len); #include #include void *evp_generic_fetch(OSSL_LIB_CTX *ctx, int operation_id, const char *name, const char *properties, void *(*new_method)(int name_id, const OSSL_ALGORITHM *algodef, OSSL_PROVIDER *prov), int (*up_ref_method)(void *), void (*free_method)(void *)); void *evp_generic_fetch_from_prov(OSSL_PROVIDER *prov, int operation_id, const char *name, const char *properties, void *(*new_method)(int name_id, const OSSL_ALGORITHM *algodef, OSSL_PROVIDER *prov), int (*up_ref_method)(void *), void (*free_method)(void *)); void evp_generic_do_all_prefetched(OSSL_LIB_CTX *libctx, int operation_id, void (*user_fn)(void *method, void *arg), void *user_arg); void evp_generic_do_all(OSSL_LIB_CTX *libctx, int operation_id, void (*user_fn)(void *method, void *arg), void *user_arg, void *(*new_method)(int name_id, const OSSL_ALGORITHM *algodef, OSSL_PROVIDER *prov), int (*up_ref_method)(void *), void (*free_method)(void *)); /* Internal fetchers for method types that are to be combined with others */ EVP_KEYMGMT *evp_keymgmt_fetch_by_number(OSSL_LIB_CTX *ctx, int name_id, const char *properties); EVP_SIGNATURE *evp_signature_fetch_from_prov(OSSL_PROVIDER *prov, const char *name, const char *properties); EVP_ASYM_CIPHER *evp_asym_cipher_fetch_from_prov(OSSL_PROVIDER *prov, const char *name, const char *properties); EVP_KEYEXCH *evp_keyexch_fetch_from_prov(OSSL_PROVIDER *prov, const char *name, const char *properties); EVP_KEM *evp_kem_fetch_from_prov(OSSL_PROVIDER *prov, const char *name, const char *properties); /* Internal structure constructors for fetched methods */ EVP_MD *evp_md_new(void); EVP_CIPHER *evp_cipher_new(void); int evp_cipher_get_asn1_aead_params(EVP_CIPHER_CTX *c, ASN1_TYPE *type, evp_cipher_aead_asn1_params *asn1_params); int evp_cipher_set_asn1_aead_params(EVP_CIPHER_CTX *c, ASN1_TYPE *type, evp_cipher_aead_asn1_params *asn1_params); /* Helper functions to avoid duplicating code */ /* * These methods implement different ways to pass a params array to the * provider. They will return one of these values: * * -2 if the method doesn't come from a provider * (evp_do_param will return this to the called) * -1 if the provider doesn't offer the desired function * (evp_do_param will raise an error and return 0) * or the return value from the desired function * (evp_do_param will return it to the caller) */ int evp_do_ciph_getparams(const EVP_CIPHER *ciph, OSSL_PARAM params[]); int evp_do_ciph_ctx_getparams(const EVP_CIPHER *ciph, void *provctx, OSSL_PARAM params[]); int evp_do_ciph_ctx_setparams(const EVP_CIPHER *ciph, void *provctx, OSSL_PARAM params[]); int evp_do_md_getparams(const EVP_MD *md, OSSL_PARAM params[]); int evp_do_md_ctx_getparams(const EVP_MD *md, void *provctx, OSSL_PARAM params[]); int evp_do_md_ctx_setparams(const EVP_MD *md, void *provctx, OSSL_PARAM params[]); OSSL_PARAM *evp_pkey_to_param(EVP_PKEY *pkey, size_t *sz); #define M_check_autoarg(ctx, arg, arglen, err) \ if (ctx->pmeth->flags & EVP_PKEY_FLAG_AUTOARGLEN) { \ size_t pksize = (size_t)EVP_PKEY_get_size(ctx->pkey); \ \ if (pksize == 0) { \ ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY); /*ckerr_ignore*/ \ return 0; \ } \ if (arg == NULL) { \ *arglen = pksize; \ return 1; \ } \ if (*arglen < pksize) { \ ERR_raise(ERR_LIB_EVP, EVP_R_BUFFER_TOO_SMALL); /*ckerr_ignore*/ \ return 0; \ } \ } void evp_pkey_ctx_free_old_ops(EVP_PKEY_CTX *ctx); void evp_cipher_free_int(EVP_CIPHER *md); void evp_md_free_int(EVP_MD *md); /* OSSL_PROVIDER * is only used to get the library context */ int evp_is_a(OSSL_PROVIDER *prov, int number, const char *legacy_name, const char *name); int evp_names_do_all(OSSL_PROVIDER *prov, int number, void (*fn)(const char *name, void *data), void *data); int evp_cipher_cache_constants(EVP_CIPHER *cipher);