/* * Copyright 2000-2019 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 */ /* EVP_MD_CTX related stuff */ #include #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); /* Provider ctx */ void *provctx; 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 */ 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 */ /* Provider ctx */ void *provctx; EVP_CIPHER *fetched_cipher; } /* EVP_CIPHER_CTX */ ; struct evp_mac_ctx_st { EVP_MAC *meth; /* Method structure */ void *data; /* Individual method data */ } /* EVP_MAC_CTX */; struct evp_kdf_ctx_st { EVP_KDF *meth; /* Method structure */ void *data; /* Algorithm-specific data */ } /* EVP_KDF_CTX */ ; struct evp_keymgmt_st { int id; /* libcrypto internal */ int name_id; OSSL_PROVIDER *prov; CRYPTO_REF_COUNT refcnt; CRYPTO_RWLOCK *lock; /* Domain parameter routines */ OSSL_OP_keymgmt_importdomparams_fn *importdomparams; OSSL_OP_keymgmt_gendomparams_fn *gendomparams; OSSL_OP_keymgmt_freedomparams_fn *freedomparams; OSSL_OP_keymgmt_exportdomparams_fn *exportdomparams; OSSL_OP_keymgmt_importdomparam_types_fn *importdomparam_types; OSSL_OP_keymgmt_exportdomparam_types_fn *exportdomparam_types; /* Key routines */ OSSL_OP_keymgmt_importkey_fn *importkey; OSSL_OP_keymgmt_genkey_fn *genkey; OSSL_OP_keymgmt_loadkey_fn *loadkey; OSSL_OP_keymgmt_freekey_fn *freekey; OSSL_OP_keymgmt_exportkey_fn *exportkey; OSSL_OP_keymgmt_importkey_types_fn *importkey_types; OSSL_OP_keymgmt_exportkey_types_fn *exportkey_types; } /* EVP_KEYMGMT */ ; struct keymgmt_data_st { OPENSSL_CTX *ctx; const char *properties; }; struct evp_keyexch_st { int name_id; OSSL_PROVIDER *prov; CRYPTO_REF_COUNT refcnt; CRYPTO_RWLOCK *lock; EVP_KEYMGMT *keymgmt; OSSL_OP_keyexch_newctx_fn *newctx; OSSL_OP_keyexch_init_fn *init; OSSL_OP_keyexch_set_peer_fn *set_peer; OSSL_OP_keyexch_derive_fn *derive; OSSL_OP_keyexch_freectx_fn *freectx; OSSL_OP_keyexch_dupctx_fn *dupctx; OSSL_OP_keyexch_set_ctx_params_fn *set_ctx_params; OSSL_OP_keyexch_settable_ctx_params_fn *settable_ctx_params; } /* EVP_KEYEXCH */; struct evp_signature_st { int name_id; OSSL_PROVIDER *prov; CRYPTO_REF_COUNT refcnt; CRYPTO_RWLOCK *lock; EVP_KEYMGMT *keymgmt; OSSL_OP_signature_newctx_fn *newctx; OSSL_OP_signature_sign_init_fn *sign_init; OSSL_OP_signature_sign_fn *sign; OSSL_OP_signature_verify_init_fn *verify_init; OSSL_OP_signature_verify_fn *verify; OSSL_OP_signature_verify_recover_init_fn *verify_recover_init; OSSL_OP_signature_verify_recover_fn *verify_recover; OSSL_OP_signature_freectx_fn *freectx; OSSL_OP_signature_dupctx_fn *dupctx; OSSL_OP_signature_get_ctx_params_fn *get_ctx_params; OSSL_OP_signature_gettable_ctx_params_fn *gettable_ctx_params; OSSL_OP_signature_set_ctx_params_fn *set_ctx_params; OSSL_OP_signature_settable_ctx_params_fn *settable_ctx_params; } /* EVP_SIGNATURE */; 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); 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 is_partially_overlapping(const void *ptr1, const void *ptr2, int len); #include #include void *evp_generic_fetch(OPENSSL_CTX *ctx, int operation_id, const char *name, const char *properties, void *(*new_method)(int name_id, const OSSL_DISPATCH *fns, OSSL_PROVIDER *prov, void *method_data), void *method_data, int (*up_ref_method)(void *), void (*free_method)(void *)); void *evp_generic_fetch_by_number(OPENSSL_CTX *ctx, int operation_id, int name_id, const char *properties, void *(*new_method)(int name_id, const OSSL_DISPATCH *fns, OSSL_PROVIDER *prov, void *method_data), void *method_data, int (*up_ref_method)(void *), void (*free_method)(void *)); void evp_generic_do_all(OPENSSL_CTX *libctx, int operation_id, void (*user_fn)(void *method, void *arg), void *user_arg, void *(*new_method)(int name_id, const OSSL_DISPATCH *fns, OSSL_PROVIDER *prov, void *method_data), void *method_data, void (*free_method)(void *)); /* Internal fetchers for method types that are to be combined with others */ EVP_KEYMGMT *evp_keymgmt_fetch_by_number(OPENSSL_CTX *ctx, int name_id, const char *properties); /* Internal structure constructors for fetched methods */ EVP_MD *evp_md_new(void); EVP_CIPHER *evp_cipher_new(void); /* 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_size(ctx->pkey); \ \ if (pksize == 0) { \ EVPerr(err, EVP_R_INVALID_KEY); /*ckerr_ignore*/ \ return 0; \ } \ if (arg == NULL) { \ *arglen = pksize; \ return 1; \ } \ if (*arglen < pksize) { \ EVPerr(err, EVP_R_BUFFER_TOO_SMALL); /*ckerr_ignore*/ \ return 0; \ } \ } void evp_pkey_ctx_free_old_ops(EVP_PKEY_CTX *ctx); /* OSSL_PROVIDER * is only used to get the library context */ const char *evp_first_name(OSSL_PROVIDER *prov, int name_id); int evp_is_a(OSSL_PROVIDER *prov, int number, const char *name);