Move EVP_PKEY algorithm implementations into a union
[openssl.git] / crypto / evp / evp_locl.h
index 2453effe1d0f786314bd1d90872c617bebb9fe6f..fd684c4b4cfc950673b2de7183c95bdf9aab156c 100644 (file)
@@ -9,6 +9,11 @@
 
 /* EVP_MD_CTX related stuff */
 
+#include <openssl/core_numbers.h>
+
+#define EVP_CTRL_RET_UNSUPPORTED -1
+
+
 struct evp_md_ctx_st {
     const EVP_MD *reqdigest;    /* The original requested digest */
     const EVP_MD *digest;
@@ -44,18 +49,94 @@ struct evp_cipher_ctx_st {
     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 {
-    const EVP_MAC *meth;         /* Method structure */
+    EVP_MAC *meth;               /* Method structure */
     void *data;                  /* Individual method data */
 } /* EVP_MAC_CTX */;
 
 struct evp_kdf_ctx_st {
-    const EVP_KDF_METHOD *kmeth;
-    EVP_KDF_IMPL *impl;          /* Algorithm-specific data */
+    EVP_KDF *meth;              /* Method structure */
+    void *data;                 /* Algorithm-specific data */
 } /* EVP_KDF_CTX */ ;
 
+struct evp_keymgmt_st {
+    int id;                      /* libcrypto internal */
+
+    char *name;
+    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 {
+    char *name;
+    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 {
+    char *name;
+    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,
@@ -87,7 +168,69 @@ int is_partially_overlapping(const void *ptr1, const void *ptr2, int len);
 
 void *evp_generic_fetch(OPENSSL_CTX *ctx, int operation_id,
                         const char *algorithm, const char *properties,
-                        void *(*new_method)(int nid, const OSSL_DISPATCH *fns,
-                                            OSSL_PROVIDER *prov),
-                        int (*upref_method)(void *),
+                        void *(*new_method)(const char *name,
+                                            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)(const char *name,
+                                            const OSSL_DISPATCH *fns,
+                                            OSSL_PROVIDER *prov,
+                                            void *method_data),
+                        void *method_data,
+                        void (*free_method)(void *));
+
+/* 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);