Restoring authorship annotation for <deshevoy@yandex-team.ru>. Commit 2 of 2.

1 files changed, 643 insertions, 643 deletions

diff --git a/contrib/libs/openssl/crypto/engine/eng_openssl.c b/contrib/libs/openssl/crypto/engine/eng_openssl.c
index 1de87eec6c..25631fb879 100644
--- a/contrib/libs/openssl/crypto/engine/eng_openssl.c
+++ b/contrib/libs/openssl/crypto/engine/eng_openssl.c
@@ -1,650 +1,650 @@
-/* 
+/*
  * Copyright 2001-2020 The OpenSSL Project Authors. All Rights Reserved.
- * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved 
- * 
- * Licensed under the OpenSSL license (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 <stdio.h> 
-#include <openssl/crypto.h> 
-#include "internal/cryptlib.h" 
+ * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
+ *
+ * Licensed under the OpenSSL license (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 <stdio.h>
+#include <openssl/crypto.h>
+#include "internal/cryptlib.h"
 #include "crypto/engine.h"
-#include <openssl/pem.h> 
-#include <openssl/evp.h> 
-#include <openssl/rand.h> 
-#include <openssl/rsa.h> 
-#include <openssl/dsa.h> 
-#include <openssl/dh.h> 
- 
-#include <openssl/hmac.h> 
-#include <openssl/x509v3.h> 
- 
-/* 
- * This testing gunk is implemented (and explained) lower down. It also 
- * assumes the application explicitly calls "ENGINE_load_openssl()" because 
- * this is no longer automatic in ENGINE_load_builtin_engines(). 
- */ 
-#define TEST_ENG_OPENSSL_RC4 
-#ifndef OPENSSL_NO_STDIO 
+#include <openssl/pem.h>
+#include <openssl/evp.h>
+#include <openssl/rand.h>
+#include <openssl/rsa.h>
+#include <openssl/dsa.h>
+#include <openssl/dh.h>
+
+#include <openssl/hmac.h>
+#include <openssl/x509v3.h>
+
+/*
+ * This testing gunk is implemented (and explained) lower down. It also
+ * assumes the application explicitly calls "ENGINE_load_openssl()" because
+ * this is no longer automatic in ENGINE_load_builtin_engines().
+ */
+#define TEST_ENG_OPENSSL_RC4
+#ifndef OPENSSL_NO_STDIO
 # define TEST_ENG_OPENSSL_PKEY
-#endif 
-/* #define TEST_ENG_OPENSSL_HMAC */ 
-/* #define TEST_ENG_OPENSSL_HMAC_INIT */ 
-/* #define TEST_ENG_OPENSSL_RC4_OTHERS */ 
+#endif
+/* #define TEST_ENG_OPENSSL_HMAC */
+/* #define TEST_ENG_OPENSSL_HMAC_INIT */
+/* #define TEST_ENG_OPENSSL_RC4_OTHERS */
 #ifndef OPENSSL_NO_STDIO
 # define TEST_ENG_OPENSSL_RC4_P_INIT
 #endif
-/* #define TEST_ENG_OPENSSL_RC4_P_CIPHER */ 
-#define TEST_ENG_OPENSSL_SHA 
-/* #define TEST_ENG_OPENSSL_SHA_OTHERS */ 
-/* #define TEST_ENG_OPENSSL_SHA_P_INIT */ 
-/* #define TEST_ENG_OPENSSL_SHA_P_UPDATE */ 
-/* #define TEST_ENG_OPENSSL_SHA_P_FINAL */ 
- 
-/* Now check what of those algorithms are actually enabled */ 
-#ifdef OPENSSL_NO_RC4 
-# undef TEST_ENG_OPENSSL_RC4 
-# undef TEST_ENG_OPENSSL_RC4_OTHERS 
-# undef TEST_ENG_OPENSSL_RC4_P_INIT 
-# undef TEST_ENG_OPENSSL_RC4_P_CIPHER 
-#endif 
- 
-static int openssl_destroy(ENGINE *e); 
- 
-#ifdef TEST_ENG_OPENSSL_RC4 
-static int openssl_ciphers(ENGINE *e, const EVP_CIPHER **cipher, 
-                           const int **nids, int nid); 
-#endif 
-#ifdef TEST_ENG_OPENSSL_SHA 
-static int openssl_digests(ENGINE *e, const EVP_MD **digest, 
-                           const int **nids, int nid); 
-#endif 
- 
-#ifdef TEST_ENG_OPENSSL_PKEY 
-static EVP_PKEY *openssl_load_privkey(ENGINE *eng, const char *key_id, 
-                                      UI_METHOD *ui_method, 
-                                      void *callback_data); 
-#endif 
- 
-#ifdef TEST_ENG_OPENSSL_HMAC 
-static int ossl_register_hmac_meth(void); 
-static int ossl_pkey_meths(ENGINE *e, EVP_PKEY_METHOD **pmeth, 
-                           const int **nids, int nid); 
-#endif 
- 
-/* The constants used when creating the ENGINE */ 
-static const char *engine_openssl_id = "openssl"; 
-static const char *engine_openssl_name = "Software engine support"; 
- 
-/* 
- * This internal function is used by ENGINE_openssl() and possibly by the 
- * "dynamic" ENGINE support too 
- */ 
-static int bind_helper(ENGINE *e) 
-{ 
-    if (!ENGINE_set_id(e, engine_openssl_id) 
-        || !ENGINE_set_name(e, engine_openssl_name) 
-        || !ENGINE_set_destroy_function(e, openssl_destroy) 
-#ifndef TEST_ENG_OPENSSL_NO_ALGORITHMS 
-# ifndef OPENSSL_NO_RSA 
-        || !ENGINE_set_RSA(e, RSA_get_default_method()) 
-# endif 
-# ifndef OPENSSL_NO_DSA 
-        || !ENGINE_set_DSA(e, DSA_get_default_method()) 
-# endif 
-# ifndef OPENSSL_NO_EC 
-        || !ENGINE_set_EC(e, EC_KEY_OpenSSL()) 
-# endif 
-# ifndef OPENSSL_NO_DH 
-        || !ENGINE_set_DH(e, DH_get_default_method()) 
-# endif 
-        || !ENGINE_set_RAND(e, RAND_OpenSSL()) 
-# ifdef TEST_ENG_OPENSSL_RC4 
-        || !ENGINE_set_ciphers(e, openssl_ciphers) 
-# endif 
-# ifdef TEST_ENG_OPENSSL_SHA 
-        || !ENGINE_set_digests(e, openssl_digests) 
-# endif 
-#endif 
-#ifdef TEST_ENG_OPENSSL_PKEY 
-        || !ENGINE_set_load_privkey_function(e, openssl_load_privkey) 
-#endif 
-#ifdef TEST_ENG_OPENSSL_HMAC 
-        || !ossl_register_hmac_meth() 
-        || !ENGINE_set_pkey_meths(e, ossl_pkey_meths) 
-#endif 
-        ) 
-        return 0; 
-    /* 
-     * If we add errors to this ENGINE, ensure the error handling is setup 
-     * here 
-     */ 
-    /* openssl_load_error_strings(); */ 
-    return 1; 
-} 
- 
-static ENGINE *engine_openssl(void) 
-{ 
-    ENGINE *ret = ENGINE_new(); 
-    if (ret == NULL) 
-        return NULL; 
-    if (!bind_helper(ret)) { 
-        ENGINE_free(ret); 
-        return NULL; 
-    } 
-    return ret; 
-} 
- 
-void engine_load_openssl_int(void) 
-{ 
-    ENGINE *toadd = engine_openssl(); 
-    if (!toadd) 
-        return; 
-    ENGINE_add(toadd); 
-    /* 
-     * If the "add" worked, it gets a structural reference. So either way, we 
-     * release our just-created reference. 
-     */ 
-    ENGINE_free(toadd); 
-    ERR_clear_error(); 
-} 
- 
-/* 
- * This stuff is needed if this ENGINE is being compiled into a 
- * self-contained shared-library. 
- */ 
-#ifdef ENGINE_DYNAMIC_SUPPORT 
-static int bind_fn(ENGINE *e, const char *id) 
-{ 
-    if (id && (strcmp(id, engine_openssl_id) != 0)) 
-        return 0; 
-    if (!bind_helper(e)) 
-        return 0; 
-    return 1; 
-} 
- 
-IMPLEMENT_DYNAMIC_CHECK_FN() 
+/* #define TEST_ENG_OPENSSL_RC4_P_CIPHER */
+#define TEST_ENG_OPENSSL_SHA
+/* #define TEST_ENG_OPENSSL_SHA_OTHERS */
+/* #define TEST_ENG_OPENSSL_SHA_P_INIT */
+/* #define TEST_ENG_OPENSSL_SHA_P_UPDATE */
+/* #define TEST_ENG_OPENSSL_SHA_P_FINAL */
+
+/* Now check what of those algorithms are actually enabled */
+#ifdef OPENSSL_NO_RC4
+# undef TEST_ENG_OPENSSL_RC4
+# undef TEST_ENG_OPENSSL_RC4_OTHERS
+# undef TEST_ENG_OPENSSL_RC4_P_INIT
+# undef TEST_ENG_OPENSSL_RC4_P_CIPHER
+#endif
+
+static int openssl_destroy(ENGINE *e);
+
+#ifdef TEST_ENG_OPENSSL_RC4
+static int openssl_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
+                           const int **nids, int nid);
+#endif
+#ifdef TEST_ENG_OPENSSL_SHA
+static int openssl_digests(ENGINE *e, const EVP_MD **digest,
+                           const int **nids, int nid);
+#endif
+
+#ifdef TEST_ENG_OPENSSL_PKEY
+static EVP_PKEY *openssl_load_privkey(ENGINE *eng, const char *key_id,
+                                      UI_METHOD *ui_method,
+                                      void *callback_data);
+#endif
+
+#ifdef TEST_ENG_OPENSSL_HMAC
+static int ossl_register_hmac_meth(void);
+static int ossl_pkey_meths(ENGINE *e, EVP_PKEY_METHOD **pmeth,
+                           const int **nids, int nid);
+#endif
+
+/* The constants used when creating the ENGINE */
+static const char *engine_openssl_id = "openssl";
+static const char *engine_openssl_name = "Software engine support";
+
+/*
+ * This internal function is used by ENGINE_openssl() and possibly by the
+ * "dynamic" ENGINE support too
+ */
+static int bind_helper(ENGINE *e)
+{
+    if (!ENGINE_set_id(e, engine_openssl_id)
+        || !ENGINE_set_name(e, engine_openssl_name)
+        || !ENGINE_set_destroy_function(e, openssl_destroy)
+#ifndef TEST_ENG_OPENSSL_NO_ALGORITHMS
+# ifndef OPENSSL_NO_RSA
+        || !ENGINE_set_RSA(e, RSA_get_default_method())
+# endif
+# ifndef OPENSSL_NO_DSA
+        || !ENGINE_set_DSA(e, DSA_get_default_method())
+# endif
+# ifndef OPENSSL_NO_EC
+        || !ENGINE_set_EC(e, EC_KEY_OpenSSL())
+# endif
+# ifndef OPENSSL_NO_DH
+        || !ENGINE_set_DH(e, DH_get_default_method())
+# endif
+        || !ENGINE_set_RAND(e, RAND_OpenSSL())
+# ifdef TEST_ENG_OPENSSL_RC4
+        || !ENGINE_set_ciphers(e, openssl_ciphers)
+# endif
+# ifdef TEST_ENG_OPENSSL_SHA
+        || !ENGINE_set_digests(e, openssl_digests)
+# endif
+#endif
+#ifdef TEST_ENG_OPENSSL_PKEY
+        || !ENGINE_set_load_privkey_function(e, openssl_load_privkey)
+#endif
+#ifdef TEST_ENG_OPENSSL_HMAC
+        || !ossl_register_hmac_meth()
+        || !ENGINE_set_pkey_meths(e, ossl_pkey_meths)
+#endif
+        )
+        return 0;
+    /*
+     * If we add errors to this ENGINE, ensure the error handling is setup
+     * here
+     */
+    /* openssl_load_error_strings(); */
+    return 1;
+}
+
+static ENGINE *engine_openssl(void)
+{
+    ENGINE *ret = ENGINE_new();
+    if (ret == NULL)
+        return NULL;
+    if (!bind_helper(ret)) {
+        ENGINE_free(ret);
+        return NULL;
+    }
+    return ret;
+}
+
+void engine_load_openssl_int(void)
+{
+    ENGINE *toadd = engine_openssl();
+    if (!toadd)
+        return;
+    ENGINE_add(toadd);
+    /*
+     * If the "add" worked, it gets a structural reference. So either way, we
+     * release our just-created reference.
+     */
+    ENGINE_free(toadd);
+    ERR_clear_error();
+}
+
+/*
+ * This stuff is needed if this ENGINE is being compiled into a
+ * self-contained shared-library.
+ */
+#ifdef ENGINE_DYNAMIC_SUPPORT
+static int bind_fn(ENGINE *e, const char *id)
+{
+    if (id && (strcmp(id, engine_openssl_id) != 0))
+        return 0;
+    if (!bind_helper(e))
+        return 0;
+    return 1;
+}
+
+IMPLEMENT_DYNAMIC_CHECK_FN()
 IMPLEMENT_DYNAMIC_BIND_FN(bind_fn)
-#endif                          /* ENGINE_DYNAMIC_SUPPORT */ 
-#ifdef TEST_ENG_OPENSSL_RC4 
-/*- 
- * This section of code compiles an "alternative implementation" of two modes of 
- * RC4 into this ENGINE. The result is that EVP_CIPHER operation for "rc4" 
- * should under normal circumstances go via this support rather than the default 
- * EVP support. There are other symbols to tweak the testing; 
- *    TEST_ENC_OPENSSL_RC4_OTHERS - print a one line message to stderr each time 
- *        we're asked for a cipher we don't support (should not happen). 
- *    TEST_ENG_OPENSSL_RC4_P_INIT - print a one line message to stderr each time 
- *        the "init_key" handler is called. 
- *    TEST_ENG_OPENSSL_RC4_P_CIPHER - ditto for the "cipher" handler. 
- */ 
-# include <openssl/rc4.h> 
-# define TEST_RC4_KEY_SIZE               16 
-typedef struct { 
-    unsigned char key[TEST_RC4_KEY_SIZE]; 
-    RC4_KEY ks; 
-} TEST_RC4_KEY; 
-# define test(ctx) ((TEST_RC4_KEY *)EVP_CIPHER_CTX_get_cipher_data(ctx)) 
-static int test_rc4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 
-                             const unsigned char *iv, int enc) 
-{ 
-# ifdef TEST_ENG_OPENSSL_RC4_P_INIT 
-    fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) test_init_key() called\n"); 
-# endif 
-    memcpy(&test(ctx)->key[0], key, EVP_CIPHER_CTX_key_length(ctx)); 
-    RC4_set_key(&test(ctx)->ks, EVP_CIPHER_CTX_key_length(ctx), 
-                test(ctx)->key); 
-    return 1; 
-} 
- 
-static int test_rc4_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 
-                           const unsigned char *in, size_t inl) 
-{ 
-# ifdef TEST_ENG_OPENSSL_RC4_P_CIPHER 
-    fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) test_cipher() called\n"); 
-# endif 
-    RC4(&test(ctx)->ks, inl, in, out); 
-    return 1; 
-} 
- 
-static EVP_CIPHER *r4_cipher = NULL; 
-static const EVP_CIPHER *test_r4_cipher(void) 
-{ 
-    if (r4_cipher == NULL) { 
-        EVP_CIPHER *cipher; 
- 
-        if ((cipher = EVP_CIPHER_meth_new(NID_rc4, 1, TEST_RC4_KEY_SIZE)) == NULL 
-            || !EVP_CIPHER_meth_set_iv_length(cipher, 0) 
-            || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_VARIABLE_LENGTH) 
-            || !EVP_CIPHER_meth_set_init(cipher, test_rc4_init_key) 
-            || !EVP_CIPHER_meth_set_do_cipher(cipher, test_rc4_cipher) 
-            || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(TEST_RC4_KEY))) { 
-            EVP_CIPHER_meth_free(cipher); 
-            cipher = NULL; 
-        } 
-        r4_cipher = cipher; 
-    } 
-    return r4_cipher; 
-} 
-static void test_r4_cipher_destroy(void) 
-{ 
-    EVP_CIPHER_meth_free(r4_cipher); 
-    r4_cipher = NULL; 
-} 
- 
-static EVP_CIPHER *r4_40_cipher = NULL; 
-static const EVP_CIPHER *test_r4_40_cipher(void) 
-{ 
-    if (r4_40_cipher == NULL) { 
-        EVP_CIPHER *cipher; 
- 
-        if ((cipher = EVP_CIPHER_meth_new(NID_rc4, 1, 5 /* 40 bits */)) == NULL 
-            || !EVP_CIPHER_meth_set_iv_length(cipher, 0) 
-            || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_VARIABLE_LENGTH) 
-            || !EVP_CIPHER_meth_set_init(cipher, test_rc4_init_key) 
-            || !EVP_CIPHER_meth_set_do_cipher(cipher, test_rc4_cipher) 
-            || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(TEST_RC4_KEY))) { 
-            EVP_CIPHER_meth_free(cipher); 
-            cipher = NULL; 
-        } 
-        r4_40_cipher = cipher; 
-    } 
-    return r4_40_cipher; 
-} 
-static void test_r4_40_cipher_destroy(void) 
-{ 
-    EVP_CIPHER_meth_free(r4_40_cipher); 
-    r4_40_cipher = NULL; 
-} 
-static int test_cipher_nids(const int **nids) 
-{ 
-    static int cipher_nids[4] = { 0, 0, 0, 0 }; 
-    static int pos = 0; 
-    static int init = 0; 
- 
-    if (!init) { 
-        const EVP_CIPHER *cipher; 
-        if ((cipher = test_r4_cipher()) != NULL) 
-            cipher_nids[pos++] = EVP_CIPHER_nid(cipher); 
-        if ((cipher = test_r4_40_cipher()) != NULL) 
-            cipher_nids[pos++] = EVP_CIPHER_nid(cipher); 
-        cipher_nids[pos] = 0; 
-        init = 1; 
-    } 
-    *nids = cipher_nids; 
-    return pos; 
-} 
- 
-static int openssl_ciphers(ENGINE *e, const EVP_CIPHER **cipher, 
-                           const int **nids, int nid) 
-{ 
-    if (!cipher) { 
-        /* We are returning a list of supported nids */ 
-        return test_cipher_nids(nids); 
-    } 
-    /* We are being asked for a specific cipher */ 
-    if (nid == NID_rc4) 
-        *cipher = test_r4_cipher(); 
-    else if (nid == NID_rc4_40) 
-        *cipher = test_r4_40_cipher(); 
-    else { 
-# ifdef TEST_ENG_OPENSSL_RC4_OTHERS 
-        fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) returning NULL for " 
-                "nid %d\n", nid); 
-# endif 
-        *cipher = NULL; 
-        return 0; 
-    } 
-    return 1; 
-} 
-#endif 
- 
-#ifdef TEST_ENG_OPENSSL_SHA 
-/* Much the same sort of comment as for TEST_ENG_OPENSSL_RC4 */ 
-# include <openssl/sha.h> 
- 
-static int test_sha1_init(EVP_MD_CTX *ctx) 
-{ 
-# ifdef TEST_ENG_OPENSSL_SHA_P_INIT 
-    fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_init() called\n"); 
-# endif 
-    return SHA1_Init(EVP_MD_CTX_md_data(ctx)); 
-} 
- 
-static int test_sha1_update(EVP_MD_CTX *ctx, const void *data, size_t count) 
-{ 
-# ifdef TEST_ENG_OPENSSL_SHA_P_UPDATE 
-    fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_update() called\n"); 
-# endif 
-    return SHA1_Update(EVP_MD_CTX_md_data(ctx), data, count); 
-} 
- 
-static int test_sha1_final(EVP_MD_CTX *ctx, unsigned char *md) 
-{ 
-# ifdef TEST_ENG_OPENSSL_SHA_P_FINAL 
-    fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_final() called\n"); 
-# endif 
-    return SHA1_Final(md, EVP_MD_CTX_md_data(ctx)); 
-} 
- 
-static EVP_MD *sha1_md = NULL; 
-static const EVP_MD *test_sha_md(void) 
-{ 
-    if (sha1_md == NULL) { 
-        EVP_MD *md; 
- 
-        if ((md = EVP_MD_meth_new(NID_sha1, NID_sha1WithRSAEncryption)) == NULL 
-            || !EVP_MD_meth_set_result_size(md, SHA_DIGEST_LENGTH) 
-            || !EVP_MD_meth_set_input_blocksize(md, SHA_CBLOCK) 
-            || !EVP_MD_meth_set_app_datasize(md, 
-                                             sizeof(EVP_MD *) + sizeof(SHA_CTX)) 
-            || !EVP_MD_meth_set_flags(md, 0) 
-            || !EVP_MD_meth_set_init(md, test_sha1_init) 
-            || !EVP_MD_meth_set_update(md, test_sha1_update) 
-            || !EVP_MD_meth_set_final(md, test_sha1_final)) { 
-            EVP_MD_meth_free(md); 
-            md = NULL; 
-        } 
-        sha1_md = md; 
-    } 
-    return sha1_md; 
-} 
-static void test_sha_md_destroy(void) 
-{ 
-    EVP_MD_meth_free(sha1_md); 
-    sha1_md = NULL; 
-} 
-static int test_digest_nids(const int **nids) 
-{ 
-    static int digest_nids[2] = { 0, 0 }; 
-    static int pos = 0; 
-    static int init = 0; 
- 
-    if (!init) { 
-        const EVP_MD *md; 
-        if ((md = test_sha_md()) != NULL) 
-            digest_nids[pos++] = EVP_MD_type(md); 
-        digest_nids[pos] = 0; 
-        init = 1; 
-    } 
-    *nids = digest_nids; 
-    return pos; 
-} 
- 
-static int openssl_digests(ENGINE *e, const EVP_MD **digest, 
-                           const int **nids, int nid) 
-{ 
-    if (!digest) { 
-        /* We are returning a list of supported nids */ 
-        return test_digest_nids(nids); 
-    } 
-    /* We are being asked for a specific digest */ 
-    if (nid == NID_sha1) 
-        *digest = test_sha_md(); 
-    else { 
-# ifdef TEST_ENG_OPENSSL_SHA_OTHERS 
-        fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) returning NULL for " 
-                "nid %d\n", nid); 
-# endif 
-        *digest = NULL; 
-        return 0; 
-    } 
-    return 1; 
-} 
-#endif 
- 
-#ifdef TEST_ENG_OPENSSL_PKEY 
-static EVP_PKEY *openssl_load_privkey(ENGINE *eng, const char *key_id, 
-                                      UI_METHOD *ui_method, 
-                                      void *callback_data) 
-{ 
-    BIO *in; 
-    EVP_PKEY *key; 
-    fprintf(stderr, "(TEST_ENG_OPENSSL_PKEY)Loading Private key %s\n", 
-            key_id); 
-    in = BIO_new_file(key_id, "r"); 
-    if (!in) 
-        return NULL; 
-    key = PEM_read_bio_PrivateKey(in, NULL, 0, NULL); 
-    BIO_free(in); 
-    return key; 
-} 
-#endif 
- 
-#ifdef TEST_ENG_OPENSSL_HMAC 
- 
-/* 
- * Experimental HMAC redirection implementation: mainly copied from 
- * hm_pmeth.c 
- */ 
- 
-/* HMAC pkey context structure */ 
- 
-typedef struct { 
-    const EVP_MD *md;           /* MD for HMAC use */ 
-    ASN1_OCTET_STRING ktmp;     /* Temp storage for key */ 
-    HMAC_CTX *ctx; 
-} OSSL_HMAC_PKEY_CTX; 
- 
-static int ossl_hmac_init(EVP_PKEY_CTX *ctx) 
-{ 
-    OSSL_HMAC_PKEY_CTX *hctx; 
- 
-    if ((hctx = OPENSSL_zalloc(sizeof(*hctx))) == NULL) { 
-        ENGINEerr(ENGINE_F_OSSL_HMAC_INIT, ERR_R_MALLOC_FAILURE); 
-        return 0; 
-    } 
-    hctx->ktmp.type = V_ASN1_OCTET_STRING; 
-    hctx->ctx = HMAC_CTX_new(); 
-    if (hctx->ctx == NULL) { 
-        OPENSSL_free(hctx); 
-        return 0; 
-    } 
-    EVP_PKEY_CTX_set_data(ctx, hctx); 
-    EVP_PKEY_CTX_set0_keygen_info(ctx, NULL, 0); 
-# ifdef TEST_ENG_OPENSSL_HMAC_INIT 
-    fprintf(stderr, "(TEST_ENG_OPENSSL_HMAC) ossl_hmac_init() called\n"); 
-# endif 
-    return 1; 
-} 
- 
-static void ossl_hmac_cleanup(EVP_PKEY_CTX *ctx); 
- 
-static int ossl_hmac_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src) 
-{ 
-    OSSL_HMAC_PKEY_CTX *sctx, *dctx; 
- 
-    /* allocate memory for dst->data and a new HMAC_CTX in dst->data->ctx */ 
-    if (!ossl_hmac_init(dst)) 
-        return 0; 
-    sctx = EVP_PKEY_CTX_get_data(src); 
-    dctx = EVP_PKEY_CTX_get_data(dst); 
-    dctx->md = sctx->md; 
-    if (!HMAC_CTX_copy(dctx->ctx, sctx->ctx)) 
-        goto err; 
-    if (sctx->ktmp.data) { 
-        if (!ASN1_OCTET_STRING_set(&dctx->ktmp, 
-                                   sctx->ktmp.data, sctx->ktmp.length)) 
-            goto err; 
-    } 
-    return 1; 
-err: 
-    /* release HMAC_CTX in dst->data->ctx and memory allocated for dst->data */ 
-    ossl_hmac_cleanup(dst); 
-    return 0; 
-} 
- 
-static void ossl_hmac_cleanup(EVP_PKEY_CTX *ctx) 
-{ 
-    OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx); 
- 
-    if (hctx) { 
-        HMAC_CTX_free(hctx->ctx); 
-        OPENSSL_clear_free(hctx->ktmp.data, hctx->ktmp.length); 
-        OPENSSL_free(hctx); 
-        EVP_PKEY_CTX_set_data(ctx, NULL); 
-    } 
-} 
- 
-static int ossl_hmac_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey) 
-{ 
-    ASN1_OCTET_STRING *hkey = NULL; 
-    OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx); 
-    if (!hctx->ktmp.data) 
-        return 0; 
-    hkey = ASN1_OCTET_STRING_dup(&hctx->ktmp); 
-    if (!hkey) 
-        return 0; 
-    EVP_PKEY_assign(pkey, EVP_PKEY_HMAC, hkey); 
- 
-    return 1; 
-} 
- 
-static int ossl_int_update(EVP_MD_CTX *ctx, const void *data, size_t count) 
-{ 
-    OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(EVP_MD_CTX_pkey_ctx(ctx)); 
-    if (!HMAC_Update(hctx->ctx, data, count)) 
-        return 0; 
-    return 1; 
-} 
- 
-static int ossl_hmac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx) 
-{ 
-    EVP_MD_CTX_set_flags(mctx, EVP_MD_CTX_FLAG_NO_INIT); 
-    EVP_MD_CTX_set_update_fn(mctx, ossl_int_update); 
-    return 1; 
-} 
- 
-static int ossl_hmac_signctx(EVP_PKEY_CTX *ctx, unsigned char *sig, 
-                             size_t *siglen, EVP_MD_CTX *mctx) 
-{ 
-    unsigned int hlen; 
-    OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx); 
-    int l = EVP_MD_CTX_size(mctx); 
- 
-    if (l < 0) 
-        return 0; 
-    *siglen = l; 
-    if (!sig) 
-        return 1; 
- 
-    if (!HMAC_Final(hctx->ctx, sig, &hlen)) 
-        return 0; 
-    *siglen = (size_t)hlen; 
-    return 1; 
-} 
- 
-static int ossl_hmac_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2) 
-{ 
-    OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx); 
-    EVP_PKEY *pk; 
-    ASN1_OCTET_STRING *key; 
-    switch (type) { 
- 
-    case EVP_PKEY_CTRL_SET_MAC_KEY: 
-        if ((!p2 && p1 > 0) || (p1 < -1)) 
-            return 0; 
-        if (!ASN1_OCTET_STRING_set(&hctx->ktmp, p2, p1)) 
-            return 0; 
-        break; 
- 
-    case EVP_PKEY_CTRL_MD: 
-        hctx->md = p2; 
-        break; 
- 
-    case EVP_PKEY_CTRL_DIGESTINIT: 
-        pk = EVP_PKEY_CTX_get0_pkey(ctx); 
-        key = EVP_PKEY_get0(pk); 
-        if (!HMAC_Init_ex(hctx->ctx, key->data, key->length, hctx->md, NULL)) 
-            return 0; 
-        break; 
- 
-    default: 
-        return -2; 
- 
-    } 
-    return 1; 
-} 
- 
-static int ossl_hmac_ctrl_str(EVP_PKEY_CTX *ctx, 
-                              const char *type, const char *value) 
-{ 
-    if (!value) { 
-        return 0; 
-    } 
-    if (strcmp(type, "key") == 0) { 
-        void *p = (void *)value; 
-        return ossl_hmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, -1, p); 
-    } 
-    if (strcmp(type, "hexkey") == 0) { 
-        unsigned char *key; 
-        int r; 
-        long keylen; 
-        key = OPENSSL_hexstr2buf(value, &keylen); 
-        if (!key) 
-            return 0; 
-        r = ossl_hmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, keylen, key); 
-        OPENSSL_free(key); 
-        return r; 
-    } 
-    return -2; 
-} 
- 
-static EVP_PKEY_METHOD *ossl_hmac_meth; 
- 
-static int ossl_register_hmac_meth(void) 
-{ 
-    EVP_PKEY_METHOD *meth; 
-    meth = EVP_PKEY_meth_new(EVP_PKEY_HMAC, 0); 
-    if (meth == NULL) 
-        return 0; 
-    EVP_PKEY_meth_set_init(meth, ossl_hmac_init); 
-    EVP_PKEY_meth_set_copy(meth, ossl_hmac_copy); 
-    EVP_PKEY_meth_set_cleanup(meth, ossl_hmac_cleanup); 
- 
-    EVP_PKEY_meth_set_keygen(meth, 0, ossl_hmac_keygen); 
- 
-    EVP_PKEY_meth_set_signctx(meth, ossl_hmac_signctx_init, 
-                              ossl_hmac_signctx); 
- 
-    EVP_PKEY_meth_set_ctrl(meth, ossl_hmac_ctrl, ossl_hmac_ctrl_str); 
-    ossl_hmac_meth = meth; 
-    return 1; 
-} 
- 
-static int ossl_pkey_meths(ENGINE *e, EVP_PKEY_METHOD **pmeth, 
-                           const int **nids, int nid) 
-{ 
-    static int ossl_pkey_nids[] = { 
-        EVP_PKEY_HMAC, 
-        0 
-    }; 
-    if (!pmeth) { 
-        *nids = ossl_pkey_nids; 
-        return 1; 
-    } 
- 
-    if (nid == EVP_PKEY_HMAC) { 
-        *pmeth = ossl_hmac_meth; 
-        return 1; 
-    } 
- 
-    *pmeth = NULL; 
-    return 0; 
-} 
- 
-#endif 
- 
-int openssl_destroy(ENGINE *e) 
-{ 
-    test_sha_md_destroy(); 
-#ifdef TEST_ENG_OPENSSL_RC4 
-    test_r4_cipher_destroy(); 
-    test_r4_40_cipher_destroy(); 
-#endif 
-    return 1; 
-} 
- 
+#endif                          /* ENGINE_DYNAMIC_SUPPORT */
+#ifdef TEST_ENG_OPENSSL_RC4
+/*-
+ * This section of code compiles an "alternative implementation" of two modes of
+ * RC4 into this ENGINE. The result is that EVP_CIPHER operation for "rc4"
+ * should under normal circumstances go via this support rather than the default
+ * EVP support. There are other symbols to tweak the testing;
+ *    TEST_ENC_OPENSSL_RC4_OTHERS - print a one line message to stderr each time
+ *        we're asked for a cipher we don't support (should not happen).
+ *    TEST_ENG_OPENSSL_RC4_P_INIT - print a one line message to stderr each time
+ *        the "init_key" handler is called.
+ *    TEST_ENG_OPENSSL_RC4_P_CIPHER - ditto for the "cipher" handler.
+ */
+# include <openssl/rc4.h>
+# define TEST_RC4_KEY_SIZE               16
+typedef struct {
+    unsigned char key[TEST_RC4_KEY_SIZE];
+    RC4_KEY ks;
+} TEST_RC4_KEY;
+# define test(ctx) ((TEST_RC4_KEY *)EVP_CIPHER_CTX_get_cipher_data(ctx))
+static int test_rc4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+                             const unsigned char *iv, int enc)
+{
+# ifdef TEST_ENG_OPENSSL_RC4_P_INIT
+    fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) test_init_key() called\n");
+# endif
+    memcpy(&test(ctx)->key[0], key, EVP_CIPHER_CTX_key_length(ctx));
+    RC4_set_key(&test(ctx)->ks, EVP_CIPHER_CTX_key_length(ctx),
+                test(ctx)->key);
+    return 1;
+}
+
+static int test_rc4_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+                           const unsigned char *in, size_t inl)
+{
+# ifdef TEST_ENG_OPENSSL_RC4_P_CIPHER
+    fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) test_cipher() called\n");
+# endif
+    RC4(&test(ctx)->ks, inl, in, out);
+    return 1;
+}
+
+static EVP_CIPHER *r4_cipher = NULL;
+static const EVP_CIPHER *test_r4_cipher(void)
+{
+    if (r4_cipher == NULL) {
+        EVP_CIPHER *cipher;
+
+        if ((cipher = EVP_CIPHER_meth_new(NID_rc4, 1, TEST_RC4_KEY_SIZE)) == NULL
+            || !EVP_CIPHER_meth_set_iv_length(cipher, 0)
+            || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_VARIABLE_LENGTH)
+            || !EVP_CIPHER_meth_set_init(cipher, test_rc4_init_key)
+            || !EVP_CIPHER_meth_set_do_cipher(cipher, test_rc4_cipher)
+            || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(TEST_RC4_KEY))) {
+            EVP_CIPHER_meth_free(cipher);
+            cipher = NULL;
+        }
+        r4_cipher = cipher;
+    }
+    return r4_cipher;
+}
+static void test_r4_cipher_destroy(void)
+{
+    EVP_CIPHER_meth_free(r4_cipher);
+    r4_cipher = NULL;
+}
+
+static EVP_CIPHER *r4_40_cipher = NULL;
+static const EVP_CIPHER *test_r4_40_cipher(void)
+{
+    if (r4_40_cipher == NULL) {
+        EVP_CIPHER *cipher;
+
+        if ((cipher = EVP_CIPHER_meth_new(NID_rc4, 1, 5 /* 40 bits */)) == NULL
+            || !EVP_CIPHER_meth_set_iv_length(cipher, 0)
+            || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_VARIABLE_LENGTH)
+            || !EVP_CIPHER_meth_set_init(cipher, test_rc4_init_key)
+            || !EVP_CIPHER_meth_set_do_cipher(cipher, test_rc4_cipher)
+            || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(TEST_RC4_KEY))) {
+            EVP_CIPHER_meth_free(cipher);
+            cipher = NULL;
+        }
+        r4_40_cipher = cipher;
+    }
+    return r4_40_cipher;
+}
+static void test_r4_40_cipher_destroy(void)
+{
+    EVP_CIPHER_meth_free(r4_40_cipher);
+    r4_40_cipher = NULL;
+}
+static int test_cipher_nids(const int **nids)
+{
+    static int cipher_nids[4] = { 0, 0, 0, 0 };
+    static int pos = 0;
+    static int init = 0;
+
+    if (!init) {
+        const EVP_CIPHER *cipher;
+        if ((cipher = test_r4_cipher()) != NULL)
+            cipher_nids[pos++] = EVP_CIPHER_nid(cipher);
+        if ((cipher = test_r4_40_cipher()) != NULL)
+            cipher_nids[pos++] = EVP_CIPHER_nid(cipher);
+        cipher_nids[pos] = 0;
+        init = 1;
+    }
+    *nids = cipher_nids;
+    return pos;
+}
+
+static int openssl_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
+                           const int **nids, int nid)
+{
+    if (!cipher) {
+        /* We are returning a list of supported nids */
+        return test_cipher_nids(nids);
+    }
+    /* We are being asked for a specific cipher */
+    if (nid == NID_rc4)
+        *cipher = test_r4_cipher();
+    else if (nid == NID_rc4_40)
+        *cipher = test_r4_40_cipher();
+    else {
+# ifdef TEST_ENG_OPENSSL_RC4_OTHERS
+        fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) returning NULL for "
+                "nid %d\n", nid);
+# endif
+        *cipher = NULL;
+        return 0;
+    }
+    return 1;
+}
+#endif
+
+#ifdef TEST_ENG_OPENSSL_SHA
+/* Much the same sort of comment as for TEST_ENG_OPENSSL_RC4 */
+# include <openssl/sha.h>
+
+static int test_sha1_init(EVP_MD_CTX *ctx)
+{
+# ifdef TEST_ENG_OPENSSL_SHA_P_INIT
+    fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_init() called\n");
+# endif
+    return SHA1_Init(EVP_MD_CTX_md_data(ctx));
+}
+
+static int test_sha1_update(EVP_MD_CTX *ctx, const void *data, size_t count)
+{
+# ifdef TEST_ENG_OPENSSL_SHA_P_UPDATE
+    fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_update() called\n");
+# endif
+    return SHA1_Update(EVP_MD_CTX_md_data(ctx), data, count);
+}
+
+static int test_sha1_final(EVP_MD_CTX *ctx, unsigned char *md)
+{
+# ifdef TEST_ENG_OPENSSL_SHA_P_FINAL
+    fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_final() called\n");
+# endif
+    return SHA1_Final(md, EVP_MD_CTX_md_data(ctx));
+}
+
+static EVP_MD *sha1_md = NULL;
+static const EVP_MD *test_sha_md(void)
+{
+    if (sha1_md == NULL) {
+        EVP_MD *md;
+
+        if ((md = EVP_MD_meth_new(NID_sha1, NID_sha1WithRSAEncryption)) == NULL
+            || !EVP_MD_meth_set_result_size(md, SHA_DIGEST_LENGTH)
+            || !EVP_MD_meth_set_input_blocksize(md, SHA_CBLOCK)
+            || !EVP_MD_meth_set_app_datasize(md,
+                                             sizeof(EVP_MD *) + sizeof(SHA_CTX))
+            || !EVP_MD_meth_set_flags(md, 0)
+            || !EVP_MD_meth_set_init(md, test_sha1_init)
+            || !EVP_MD_meth_set_update(md, test_sha1_update)
+            || !EVP_MD_meth_set_final(md, test_sha1_final)) {
+            EVP_MD_meth_free(md);
+            md = NULL;
+        }
+        sha1_md = md;
+    }
+    return sha1_md;
+}
+static void test_sha_md_destroy(void)
+{
+    EVP_MD_meth_free(sha1_md);
+    sha1_md = NULL;
+}
+static int test_digest_nids(const int **nids)
+{
+    static int digest_nids[2] = { 0, 0 };
+    static int pos = 0;
+    static int init = 0;
+
+    if (!init) {
+        const EVP_MD *md;
+        if ((md = test_sha_md()) != NULL)
+            digest_nids[pos++] = EVP_MD_type(md);
+        digest_nids[pos] = 0;
+        init = 1;
+    }
+    *nids = digest_nids;
+    return pos;
+}
+
+static int openssl_digests(ENGINE *e, const EVP_MD **digest,
+                           const int **nids, int nid)
+{
+    if (!digest) {
+        /* We are returning a list of supported nids */
+        return test_digest_nids(nids);
+    }
+    /* We are being asked for a specific digest */
+    if (nid == NID_sha1)
+        *digest = test_sha_md();
+    else {
+# ifdef TEST_ENG_OPENSSL_SHA_OTHERS
+        fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) returning NULL for "
+                "nid %d\n", nid);
+# endif
+        *digest = NULL;
+        return 0;
+    }
+    return 1;
+}
+#endif
+
+#ifdef TEST_ENG_OPENSSL_PKEY
+static EVP_PKEY *openssl_load_privkey(ENGINE *eng, const char *key_id,
+                                      UI_METHOD *ui_method,
+                                      void *callback_data)
+{
+    BIO *in;
+    EVP_PKEY *key;
+    fprintf(stderr, "(TEST_ENG_OPENSSL_PKEY)Loading Private key %s\n",
+            key_id);
+    in = BIO_new_file(key_id, "r");
+    if (!in)
+        return NULL;
+    key = PEM_read_bio_PrivateKey(in, NULL, 0, NULL);
+    BIO_free(in);
+    return key;
+}
+#endif
+
+#ifdef TEST_ENG_OPENSSL_HMAC
+
+/*
+ * Experimental HMAC redirection implementation: mainly copied from
+ * hm_pmeth.c
+ */
+
+/* HMAC pkey context structure */
+
+typedef struct {
+    const EVP_MD *md;           /* MD for HMAC use */
+    ASN1_OCTET_STRING ktmp;     /* Temp storage for key */
+    HMAC_CTX *ctx;
+} OSSL_HMAC_PKEY_CTX;
+
+static int ossl_hmac_init(EVP_PKEY_CTX *ctx)
+{
+    OSSL_HMAC_PKEY_CTX *hctx;
+
+    if ((hctx = OPENSSL_zalloc(sizeof(*hctx))) == NULL) {
+        ENGINEerr(ENGINE_F_OSSL_HMAC_INIT, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+    hctx->ktmp.type = V_ASN1_OCTET_STRING;
+    hctx->ctx = HMAC_CTX_new();
+    if (hctx->ctx == NULL) {
+        OPENSSL_free(hctx);
+        return 0;
+    }
+    EVP_PKEY_CTX_set_data(ctx, hctx);
+    EVP_PKEY_CTX_set0_keygen_info(ctx, NULL, 0);
+# ifdef TEST_ENG_OPENSSL_HMAC_INIT
+    fprintf(stderr, "(TEST_ENG_OPENSSL_HMAC) ossl_hmac_init() called\n");
+# endif
+    return 1;
+}
+
+static void ossl_hmac_cleanup(EVP_PKEY_CTX *ctx);
+
+static int ossl_hmac_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
+{
+    OSSL_HMAC_PKEY_CTX *sctx, *dctx;
+
+    /* allocate memory for dst->data and a new HMAC_CTX in dst->data->ctx */
+    if (!ossl_hmac_init(dst))
+        return 0;
+    sctx = EVP_PKEY_CTX_get_data(src);
+    dctx = EVP_PKEY_CTX_get_data(dst);
+    dctx->md = sctx->md;
+    if (!HMAC_CTX_copy(dctx->ctx, sctx->ctx))
+        goto err;
+    if (sctx->ktmp.data) {
+        if (!ASN1_OCTET_STRING_set(&dctx->ktmp,
+                                   sctx->ktmp.data, sctx->ktmp.length))
+            goto err;
+    }
+    return 1;
+err:
+    /* release HMAC_CTX in dst->data->ctx and memory allocated for dst->data */
+    ossl_hmac_cleanup(dst);
+    return 0;
+}
+
+static void ossl_hmac_cleanup(EVP_PKEY_CTX *ctx)
+{
+    OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx);
+
+    if (hctx) {
+        HMAC_CTX_free(hctx->ctx);
+        OPENSSL_clear_free(hctx->ktmp.data, hctx->ktmp.length);
+        OPENSSL_free(hctx);
+        EVP_PKEY_CTX_set_data(ctx, NULL);
+    }
+}
+
+static int ossl_hmac_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
+{
+    ASN1_OCTET_STRING *hkey = NULL;
+    OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx);
+    if (!hctx->ktmp.data)
+        return 0;
+    hkey = ASN1_OCTET_STRING_dup(&hctx->ktmp);
+    if (!hkey)
+        return 0;
+    EVP_PKEY_assign(pkey, EVP_PKEY_HMAC, hkey);
+
+    return 1;
+}
+
+static int ossl_int_update(EVP_MD_CTX *ctx, const void *data, size_t count)
+{
+    OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(EVP_MD_CTX_pkey_ctx(ctx));
+    if (!HMAC_Update(hctx->ctx, data, count))
+        return 0;
+    return 1;
+}
+
+static int ossl_hmac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx)
+{
+    EVP_MD_CTX_set_flags(mctx, EVP_MD_CTX_FLAG_NO_INIT);
+    EVP_MD_CTX_set_update_fn(mctx, ossl_int_update);
+    return 1;
+}
+
+static int ossl_hmac_signctx(EVP_PKEY_CTX *ctx, unsigned char *sig,
+                             size_t *siglen, EVP_MD_CTX *mctx)
+{
+    unsigned int hlen;
+    OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx);
+    int l = EVP_MD_CTX_size(mctx);
+
+    if (l < 0)
+        return 0;
+    *siglen = l;
+    if (!sig)
+        return 1;
+
+    if (!HMAC_Final(hctx->ctx, sig, &hlen))
+        return 0;
+    *siglen = (size_t)hlen;
+    return 1;
+}
+
+static int ossl_hmac_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
+{
+    OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx);
+    EVP_PKEY *pk;
+    ASN1_OCTET_STRING *key;
+    switch (type) {
+
+    case EVP_PKEY_CTRL_SET_MAC_KEY:
+        if ((!p2 && p1 > 0) || (p1 < -1))
+            return 0;
+        if (!ASN1_OCTET_STRING_set(&hctx->ktmp, p2, p1))
+            return 0;
+        break;
+
+    case EVP_PKEY_CTRL_MD:
+        hctx->md = p2;
+        break;
+
+    case EVP_PKEY_CTRL_DIGESTINIT:
+        pk = EVP_PKEY_CTX_get0_pkey(ctx);
+        key = EVP_PKEY_get0(pk);
+        if (!HMAC_Init_ex(hctx->ctx, key->data, key->length, hctx->md, NULL))
+            return 0;
+        break;
+
+    default:
+        return -2;
+
+    }
+    return 1;
+}
+
+static int ossl_hmac_ctrl_str(EVP_PKEY_CTX *ctx,
+                              const char *type, const char *value)
+{
+    if (!value) {
+        return 0;
+    }
+    if (strcmp(type, "key") == 0) {
+        void *p = (void *)value;
+        return ossl_hmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, -1, p);
+    }
+    if (strcmp(type, "hexkey") == 0) {
+        unsigned char *key;
+        int r;
+        long keylen;
+        key = OPENSSL_hexstr2buf(value, &keylen);
+        if (!key)
+            return 0;
+        r = ossl_hmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, keylen, key);
+        OPENSSL_free(key);
+        return r;
+    }
+    return -2;
+}
+
+static EVP_PKEY_METHOD *ossl_hmac_meth;
+
+static int ossl_register_hmac_meth(void)
+{
+    EVP_PKEY_METHOD *meth;
+    meth = EVP_PKEY_meth_new(EVP_PKEY_HMAC, 0);
+    if (meth == NULL)
+        return 0;
+    EVP_PKEY_meth_set_init(meth, ossl_hmac_init);
+    EVP_PKEY_meth_set_copy(meth, ossl_hmac_copy);
+    EVP_PKEY_meth_set_cleanup(meth, ossl_hmac_cleanup);
+
+    EVP_PKEY_meth_set_keygen(meth, 0, ossl_hmac_keygen);
+
+    EVP_PKEY_meth_set_signctx(meth, ossl_hmac_signctx_init,
+                              ossl_hmac_signctx);
+
+    EVP_PKEY_meth_set_ctrl(meth, ossl_hmac_ctrl, ossl_hmac_ctrl_str);
+    ossl_hmac_meth = meth;
+    return 1;
+}
+
+static int ossl_pkey_meths(ENGINE *e, EVP_PKEY_METHOD **pmeth,
+                           const int **nids, int nid)
+{
+    static int ossl_pkey_nids[] = {
+        EVP_PKEY_HMAC,
+        0
+    };
+    if (!pmeth) {
+        *nids = ossl_pkey_nids;
+        return 1;
+    }
+
+    if (nid == EVP_PKEY_HMAC) {
+        *pmeth = ossl_hmac_meth;
+        return 1;
+    }
+
+    *pmeth = NULL;
+    return 0;
+}
+
+#endif
+
+int openssl_destroy(ENGINE *e)
+{
+    test_sha_md_destroy();
+#ifdef TEST_ENG_OPENSSL_RC4
+    test_r4_cipher_destroy();
+    test_r4_40_cipher_destroy();
+#endif
+    return 1;
+}
+