/src/openssl/crypto/engine/eng_openssl.c

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/*
 * Copyright 2001-2018 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"
#include "internal/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
#define TEST_ENG_OPENSSL_PKEY
#endif
/* #define TEST_ENG_OPENSSL_HMAC */
/* #define TEST_ENG_OPENSSL_HMAC_INIT */
/* #define TEST_ENG_OPENSSL_RC4_OTHERS */
#define TEST_ENG_OPENSSL_RC4_P_INIT
/* #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;
}


Coverage Report

Created: 2018-08-29 13:53

Line	Count	Source (jump to first uncovered line)
1		/*
2		* Copyright 2001-2018 The OpenSSL Project Authors. All Rights Reserved.
3		* Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4		*
5		* Licensed under the OpenSSL license (the "License"). You may not use
6		* this file except in compliance with the License. You can obtain a copy
7		* in the file LICENSE in the source distribution or at
8		* https://www.openssl.org/source/license.html
9		*/
10
11		#include <stdio.h>
12		#include <openssl/crypto.h>
13		#include "internal/cryptlib.h"
14		#include "internal/engine.h"
15		#include <openssl/pem.h>
16		#include <openssl/evp.h>
17		#include <openssl/rand.h>
18		#include <openssl/rsa.h>
19		#include <openssl/dsa.h>
20		#include <openssl/dh.h>
21
22		#include <openssl/hmac.h>
23		#include <openssl/x509v3.h>
24
25		/*
26		* This testing gunk is implemented (and explained) lower down. It also
27		* assumes the application explicitly calls "ENGINE_load_openssl()" because
28		* this is no longer automatic in ENGINE_load_builtin_engines().
29		*/
30		#define TEST_ENG_OPENSSL_RC4
31		#ifndef OPENSSL_NO_STDIO
32		#define TEST_ENG_OPENSSL_PKEY
33		#endif
34		/* #define TEST_ENG_OPENSSL_HMAC */
35		/* #define TEST_ENG_OPENSSL_HMAC_INIT */
36		/* #define TEST_ENG_OPENSSL_RC4_OTHERS */
37		#define TEST_ENG_OPENSSL_RC4_P_INIT
38		/* #define TEST_ENG_OPENSSL_RC4_P_CIPHER */
39		#define TEST_ENG_OPENSSL_SHA
40		/* #define TEST_ENG_OPENSSL_SHA_OTHERS */
41		/* #define TEST_ENG_OPENSSL_SHA_P_INIT */
42		/* #define TEST_ENG_OPENSSL_SHA_P_UPDATE */
43		/* #define TEST_ENG_OPENSSL_SHA_P_FINAL */
44
45		/* Now check what of those algorithms are actually enabled */
46		#ifdef OPENSSL_NO_RC4
47		# undef TEST_ENG_OPENSSL_RC4
48		# undef TEST_ENG_OPENSSL_RC4_OTHERS
49		# undef TEST_ENG_OPENSSL_RC4_P_INIT
50		# undef TEST_ENG_OPENSSL_RC4_P_CIPHER
51		#endif
52
53		static int openssl_destroy(ENGINE *e);
54
55		#ifdef TEST_ENG_OPENSSL_RC4
56		static int openssl_ciphers(ENGINE e, const EVP_CIPHER *cipher,
57		const int **nids, int nid);
58		#endif
59		#ifdef TEST_ENG_OPENSSL_SHA
60		static int openssl_digests(ENGINE e, const EVP_MD *digest,
61		const int **nids, int nid);
62		#endif
63
64		#ifdef TEST_ENG_OPENSSL_PKEY
65		static EVP_PKEY openssl_load_privkey(ENGINE eng, const char *key_id,
66		UI_METHOD *ui_method,
67		void *callback_data);
68		#endif
69
70		#ifdef TEST_ENG_OPENSSL_HMAC
71		static int ossl_register_hmac_meth(void);
72		static int ossl_pkey_meths(ENGINE e, EVP_PKEY_METHOD *pmeth,
73		const int **nids, int nid);
74		#endif
75
76		/* The constants used when creating the ENGINE */
77		static const char *engine_openssl_id = "openssl";
78		static const char *engine_openssl_name = "Software engine support";
79
80		/*
81		* This internal function is used by ENGINE_openssl() and possibly by the
82		* "dynamic" ENGINE support too
83		*/
84		static int bind_helper(ENGINE *e)
85	0	{
86	0	if (!ENGINE_set_id(e, engine_openssl_id)
87	0	\|\| !ENGINE_set_name(e, engine_openssl_name)
88	0	\|\| !ENGINE_set_destroy_function(e, openssl_destroy)
89	0	#ifndef TEST_ENG_OPENSSL_NO_ALGORITHMS
90	0	# ifndef OPENSSL_NO_RSA
91	0	\|\| !ENGINE_set_RSA(e, RSA_get_default_method())
92	0	# endif
93	0	# ifndef OPENSSL_NO_DSA
94	0	\|\| !ENGINE_set_DSA(e, DSA_get_default_method())
95	0	# endif
96	0	# ifndef OPENSSL_NO_EC
97	0	\|\| !ENGINE_set_EC(e, EC_KEY_OpenSSL())
98	0	# endif
99	0	# ifndef OPENSSL_NO_DH
100	0	\|\| !ENGINE_set_DH(e, DH_get_default_method())
101	0	# endif
102	0	\|\| !ENGINE_set_RAND(e, RAND_OpenSSL())
103	0	# ifdef TEST_ENG_OPENSSL_RC4
104	0	\|\| !ENGINE_set_ciphers(e, openssl_ciphers)
105	0	# endif
106	0	# ifdef TEST_ENG_OPENSSL_SHA
107	0	\|\| !ENGINE_set_digests(e, openssl_digests)
108	0	# endif
109	0	#endif
110	0	#ifdef TEST_ENG_OPENSSL_PKEY
111	0	\|\| !ENGINE_set_load_privkey_function(e, openssl_load_privkey)
112	0	#endif
113		#ifdef TEST_ENG_OPENSSL_HMAC
114		\|\| !ossl_register_hmac_meth()
115		\|\| !ENGINE_set_pkey_meths(e, ossl_pkey_meths)
116		#endif
117		)
118	0	return 0;
119	0	/*
120	0	* If we add errors to this ENGINE, ensure the error handling is setup
121	0	* here
122	0	*/
123	0	/* openssl_load_error_strings(); */
124	0	return 1;
125	0	}
126
127		static ENGINE *engine_openssl(void)
128	0	{
129	0	ENGINE *ret = ENGINE_new();
130	0	if (ret == NULL)
131	0	return NULL;
132	0	if (!bind_helper(ret)) {
133	0	ENGINE_free(ret);
134	0	return NULL;
135	0	}
136	0	return ret;
137	0	}
138
139		void engine_load_openssl_int(void)
140	0	{
141	0	ENGINE *toadd = engine_openssl();
142	0	if (!toadd)
143	0	return;
144	0	ENGINE_add(toadd);
145	0	/*
146	0	* If the "add" worked, it gets a structural reference. So either way, we
147	0	* release our just-created reference.
148	0	*/
149	0	ENGINE_free(toadd);
150	0	ERR_clear_error();
151	0	}
152
153		/*
154		* This stuff is needed if this ENGINE is being compiled into a
155		* self-contained shared-library.
156		*/
157		#ifdef ENGINE_DYNAMIC_SUPPORT
158		static int bind_fn(ENGINE e, const char id)
159		{
160		if (id && (strcmp(id, engine_openssl_id) != 0))
161		return 0;
162		if (!bind_helper(e))
163		return 0;
164		return 1;
165		}
166
167		IMPLEMENT_DYNAMIC_CHECK_FN()
168		IMPLEMENT_DYNAMIC_BIND_FN(bind_fn)
169		#endif /* ENGINE_DYNAMIC_SUPPORT */
170		#ifdef TEST_ENG_OPENSSL_RC4
171		/*-
172		* This section of code compiles an "alternative implementation" of two modes of
173		* RC4 into this ENGINE. The result is that EVP_CIPHER operation for "rc4"
174		* should under normal circumstances go via this support rather than the default
175		* EVP support. There are other symbols to tweak the testing;
176		* TEST_ENC_OPENSSL_RC4_OTHERS - print a one line message to stderr each time
177		* we're asked for a cipher we don't support (should not happen).
178		* TEST_ENG_OPENSSL_RC4_P_INIT - print a one line message to stderr each time
179		* the "init_key" handler is called.
180		* TEST_ENG_OPENSSL_RC4_P_CIPHER - ditto for the "cipher" handler.
181		*/
182		# include <openssl/rc4.h>
183	0	# define TEST_RC4_KEY_SIZE 16
184		typedef struct {
185		unsigned char key[TEST_RC4_KEY_SIZE];
186		RC4_KEY ks;
187		} TEST_RC4_KEY;
188	0	# define test(ctx) ((TEST_RC4_KEY *)EVP_CIPHER_CTX_get_cipher_data(ctx))
189		static int test_rc4_init_key(EVP_CIPHER_CTX ctx, const unsigned char key,
190		const unsigned char *iv, int enc)
191	0	{
192	0	# ifdef TEST_ENG_OPENSSL_RC4_P_INIT
193	0	fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) test_init_key() called\n");
194	0	# endif
195	0	memcpy(&test(ctx)->key[0], key, EVP_CIPHER_CTX_key_length(ctx));
196	0	RC4_set_key(&test(ctx)->ks, EVP_CIPHER_CTX_key_length(ctx),
197	0	test(ctx)->key);
198	0	return 1;
199	0	}
200
201		static int test_rc4_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
202		const unsigned char *in, size_t inl)
203	0	{
204		# ifdef TEST_ENG_OPENSSL_RC4_P_CIPHER
205		fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) test_cipher() called\n");
206		# endif
207	0	RC4(&test(ctx)->ks, inl, in, out);
208	0	return 1;
209	0	}
210
211		static EVP_CIPHER *r4_cipher = NULL;
212		static const EVP_CIPHER *test_r4_cipher(void)
213	0	{
214	0	if (r4_cipher == NULL) {
215	0	EVP_CIPHER *cipher;
216	0
217	0	if ((cipher = EVP_CIPHER_meth_new(NID_rc4, 1, TEST_RC4_KEY_SIZE)) == NULL
218	0	\|\| !EVP_CIPHER_meth_set_iv_length(cipher, 0)
219	0	\|\| !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_VARIABLE_LENGTH)
220	0	\|\| !EVP_CIPHER_meth_set_init(cipher, test_rc4_init_key)
221	0	\|\| !EVP_CIPHER_meth_set_do_cipher(cipher, test_rc4_cipher)
222	0	\|\| !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(TEST_RC4_KEY))) {
223	0	EVP_CIPHER_meth_free(cipher);
224	0	cipher = NULL;
225	0	}
226	0	r4_cipher = cipher;
227	0	}
228	0	return r4_cipher;
229	0	}
230		static void test_r4_cipher_destroy(void)
231	0	{
232	0	EVP_CIPHER_meth_free(r4_cipher);
233	0	r4_cipher = NULL;
234	0	}
235
236		static EVP_CIPHER *r4_40_cipher = NULL;
237		static const EVP_CIPHER *test_r4_40_cipher(void)
238	0	{
239	0	if (r4_40_cipher == NULL) {
240	0	EVP_CIPHER *cipher;
241	0
242	0	if ((cipher = EVP_CIPHER_meth_new(NID_rc4, 1, 5 /* 40 bits */)) == NULL
243	0	\|\| !EVP_CIPHER_meth_set_iv_length(cipher, 0)
244	0	\|\| !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_VARIABLE_LENGTH)
245	0	\|\| !EVP_CIPHER_meth_set_init(cipher, test_rc4_init_key)
246	0	\|\| !EVP_CIPHER_meth_set_do_cipher(cipher, test_rc4_cipher)
247	0	\|\| !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(TEST_RC4_KEY))) {
248	0	EVP_CIPHER_meth_free(cipher);
249	0	cipher = NULL;
250	0	}
251	0	r4_40_cipher = cipher;
252	0	}
253	0	return r4_40_cipher;
254	0	}
255		static void test_r4_40_cipher_destroy(void)
256	0	{
257	0	EVP_CIPHER_meth_free(r4_40_cipher);
258	0	r4_40_cipher = NULL;
259	0	}
260		static int test_cipher_nids(const int **nids)
261	0	{
262	0	static int cipher_nids[4] = { 0, 0, 0, 0 };
263	0	static int pos = 0;
264	0	static int init = 0;
265	0
266	0	if (!init) {
267	0	const EVP_CIPHER *cipher;
268	0	if ((cipher = test_r4_cipher()) != NULL)
269	0	cipher_nids[pos++] = EVP_CIPHER_nid(cipher);
270	0	if ((cipher = test_r4_40_cipher()) != NULL)
271	0	cipher_nids[pos++] = EVP_CIPHER_nid(cipher);
272	0	cipher_nids[pos] = 0;
273	0	init = 1;
274	0	}
275	0	*nids = cipher_nids;
276	0	return pos;
277	0	}
278
279		static int openssl_ciphers(ENGINE e, const EVP_CIPHER *cipher,
280		const int **nids, int nid)
281	0	{
282	0	if (!cipher) {
283	0	/* We are returning a list of supported nids */
284	0	return test_cipher_nids(nids);
285	0	}
286	0	/* We are being asked for a specific cipher */
287	0	if (nid == NID_rc4)
288	0	*cipher = test_r4_cipher();
289	0	else if (nid == NID_rc4_40)
290	0	*cipher = test_r4_40_cipher();
291	0	else {
292		# ifdef TEST_ENG_OPENSSL_RC4_OTHERS
293		fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) returning NULL for "
294		"nid %d\n", nid);
295		# endif
296		*cipher = NULL;
297	0	return 0;
298	0	}
299	0	return 1;
300	0	}
301		#endif
302
303		#ifdef TEST_ENG_OPENSSL_SHA
304		/* Much the same sort of comment as for TEST_ENG_OPENSSL_RC4 */
305		# include <openssl/sha.h>
306
307		static int test_sha1_init(EVP_MD_CTX *ctx)
308	0	{
309		# ifdef TEST_ENG_OPENSSL_SHA_P_INIT
310		fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_init() called\n");
311		# endif
312		return SHA1_Init(EVP_MD_CTX_md_data(ctx));
313	0	}
314
315		static int test_sha1_update(EVP_MD_CTX ctx, const void data, size_t count)
316	0	{
317		# ifdef TEST_ENG_OPENSSL_SHA_P_UPDATE
318		fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_update() called\n");
319		# endif
320		return SHA1_Update(EVP_MD_CTX_md_data(ctx), data, count);
321	0	}
322
323		static int test_sha1_final(EVP_MD_CTX ctx, unsigned char md)
324	0	{
325		# ifdef TEST_ENG_OPENSSL_SHA_P_FINAL
326		fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_final() called\n");
327		# endif
328		return SHA1_Final(md, EVP_MD_CTX_md_data(ctx));
329	0	}
330
331		static EVP_MD *sha1_md = NULL;
332		static const EVP_MD *test_sha_md(void)
333	0	{
334	0	if (sha1_md == NULL) {
335	0	EVP_MD *md;
336	0
337	0	if ((md = EVP_MD_meth_new(NID_sha1, NID_sha1WithRSAEncryption)) == NULL
338	0	\|\| !EVP_MD_meth_set_result_size(md, SHA_DIGEST_LENGTH)
339	0	\|\| !EVP_MD_meth_set_input_blocksize(md, SHA_CBLOCK)
340	0	\|\| !EVP_MD_meth_set_app_datasize(md,
341	0	sizeof(EVP_MD *) + sizeof(SHA_CTX))
342	0	\|\| !EVP_MD_meth_set_flags(md, 0)
343	0	\|\| !EVP_MD_meth_set_init(md, test_sha1_init)
344	0	\|\| !EVP_MD_meth_set_update(md, test_sha1_update)
345	0	\|\| !EVP_MD_meth_set_final(md, test_sha1_final)) {
346	0	EVP_MD_meth_free(md);
347	0	md = NULL;
348	0	}
349	0	sha1_md = md;
350	0	}
351	0	return sha1_md;
352	0	}
353		static void test_sha_md_destroy(void)
354	0	{
355	0	EVP_MD_meth_free(sha1_md);
356	0	sha1_md = NULL;
357	0	}
358		static int test_digest_nids(const int **nids)
359	0	{
360	0	static int digest_nids[2] = { 0, 0 };
361	0	static int pos = 0;
362	0	static int init = 0;
363	0
364	0	if (!init) {
365	0	const EVP_MD *md;
366	0	if ((md = test_sha_md()) != NULL)
367	0	digest_nids[pos++] = EVP_MD_type(md);
368	0	digest_nids[pos] = 0;
369	0	init = 1;
370	0	}
371	0	*nids = digest_nids;
372	0	return pos;
373	0	}
374
375		static int openssl_digests(ENGINE e, const EVP_MD *digest,
376		const int **nids, int nid)
377	0	{
378	0	if (!digest) {
379	0	/* We are returning a list of supported nids */
380	0	return test_digest_nids(nids);
381	0	}
382	0	/* We are being asked for a specific digest */
383	0	if (nid == NID_sha1)
384	0	*digest = test_sha_md();
385	0	else {
386		# ifdef TEST_ENG_OPENSSL_SHA_OTHERS
387		fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) returning NULL for "
388		"nid %d\n", nid);
389		# endif
390		*digest = NULL;
391	0	return 0;
392	0	}
393	0	return 1;
394	0	}
395		#endif
396
397		#ifdef TEST_ENG_OPENSSL_PKEY
398		static EVP_PKEY openssl_load_privkey(ENGINE eng, const char *key_id,
399		UI_METHOD *ui_method,
400		void *callback_data)
401	0	{
402	0	BIO *in;
403	0	EVP_PKEY *key;
404	0	fprintf(stderr, "(TEST_ENG_OPENSSL_PKEY)Loading Private key %s\n",
405	0	key_id);
406	0	in = BIO_new_file(key_id, "r");
407	0	if (!in)
408	0	return NULL;
409	0	key = PEM_read_bio_PrivateKey(in, NULL, 0, NULL);
410	0	BIO_free(in);
411	0	return key;
412	0	}
413		#endif
414
415		#ifdef TEST_ENG_OPENSSL_HMAC
416
417		/*
418		* Experimental HMAC redirection implementation: mainly copied from
419		* hm_pmeth.c
420		*/
421
422		/* HMAC pkey context structure */
423
424		typedef struct {
425		const EVP_MD md; / MD for HMAC use */
426		ASN1_OCTET_STRING ktmp; /* Temp storage for key */
427		HMAC_CTX *ctx;
428		} OSSL_HMAC_PKEY_CTX;
429
430		static int ossl_hmac_init(EVP_PKEY_CTX *ctx)
431		{
432		OSSL_HMAC_PKEY_CTX *hctx;
433
434		if ((hctx = OPENSSL_zalloc(sizeof(*hctx))) == NULL) {
435		ENGINEerr(ENGINE_F_OSSL_HMAC_INIT, ERR_R_MALLOC_FAILURE);
436		return 0;
437		}
438		hctx->ktmp.type = V_ASN1_OCTET_STRING;
439		hctx->ctx = HMAC_CTX_new();
440		if (hctx->ctx == NULL) {
441		OPENSSL_free(hctx);
442		return 0;
443		}
444		EVP_PKEY_CTX_set_data(ctx, hctx);
445		EVP_PKEY_CTX_set0_keygen_info(ctx, NULL, 0);
446		# ifdef TEST_ENG_OPENSSL_HMAC_INIT
447		fprintf(stderr, "(TEST_ENG_OPENSSL_HMAC) ossl_hmac_init() called\n");
448		# endif
449		return 1;
450		}
451
452		static void ossl_hmac_cleanup(EVP_PKEY_CTX *ctx);
453
454		static int ossl_hmac_copy(EVP_PKEY_CTX dst, EVP_PKEY_CTX src)
455		{
456		OSSL_HMAC_PKEY_CTX sctx, dctx;
457
458		/* allocate memory for dst->data and a new HMAC_CTX in dst->data->ctx */
459		if (!ossl_hmac_init(dst))
460		return 0;
461		sctx = EVP_PKEY_CTX_get_data(src);
462		dctx = EVP_PKEY_CTX_get_data(dst);
463		dctx->md = sctx->md;
464		if (!HMAC_CTX_copy(dctx->ctx, sctx->ctx))
465		goto err;
466		if (sctx->ktmp.data) {
467		if (!ASN1_OCTET_STRING_set(&dctx->ktmp,
468		sctx->ktmp.data, sctx->ktmp.length))
469		goto err;
470		}
471		return 1;
472		err:
473		/* release HMAC_CTX in dst->data->ctx and memory allocated for dst->data */
474		ossl_hmac_cleanup(dst);
475		return 0;
476		}
477
478		static void ossl_hmac_cleanup(EVP_PKEY_CTX *ctx)
479		{
480		OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx);
481
482		if (hctx) {
483		HMAC_CTX_free(hctx->ctx);
484		OPENSSL_clear_free(hctx->ktmp.data, hctx->ktmp.length);
485		OPENSSL_free(hctx);
486		EVP_PKEY_CTX_set_data(ctx, NULL);
487		}
488		}
489
490		static int ossl_hmac_keygen(EVP_PKEY_CTX ctx, EVP_PKEY pkey)
491		{
492		ASN1_OCTET_STRING *hkey = NULL;
493		OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx);
494		if (!hctx->ktmp.data)
495		return 0;
496		hkey = ASN1_OCTET_STRING_dup(&hctx->ktmp);
497		if (!hkey)
498		return 0;
499		EVP_PKEY_assign(pkey, EVP_PKEY_HMAC, hkey);
500
501		return 1;
502		}
503
504		static int ossl_int_update(EVP_MD_CTX ctx, const void data, size_t count)
505		{
506		OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(EVP_MD_CTX_pkey_ctx(ctx));
507		if (!HMAC_Update(hctx->ctx, data, count))
508		return 0;
509		return 1;
510		}
511
512		static int ossl_hmac_signctx_init(EVP_PKEY_CTX ctx, EVP_MD_CTX mctx)
513		{
514		EVP_MD_CTX_set_flags(mctx, EVP_MD_CTX_FLAG_NO_INIT);
515		EVP_MD_CTX_set_update_fn(mctx, ossl_int_update);
516		return 1;
517		}
518
519		static int ossl_hmac_signctx(EVP_PKEY_CTX ctx, unsigned char sig,
520		size_t siglen, EVP_MD_CTX mctx)
521		{
522		unsigned int hlen;
523		OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx);
524		int l = EVP_MD_CTX_size(mctx);
525
526		if (l < 0)
527		return 0;
528		*siglen = l;
529		if (!sig)
530		return 1;
531
532		if (!HMAC_Final(hctx->ctx, sig, &hlen))
533		return 0;
534		*siglen = (size_t)hlen;
535		return 1;
536		}
537
538		static int ossl_hmac_ctrl(EVP_PKEY_CTX ctx, int type, int p1, void p2)
539		{
540		OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx);
541		EVP_PKEY *pk;
542		ASN1_OCTET_STRING *key;
543		switch (type) {
544
545		case EVP_PKEY_CTRL_SET_MAC_KEY:
546		if ((!p2 && p1 > 0) \|\| (p1 < -1))
547		return 0;
548		if (!ASN1_OCTET_STRING_set(&hctx->ktmp, p2, p1))
549		return 0;
550		break;
551
552		case EVP_PKEY_CTRL_MD:
553		hctx->md = p2;
554		break;
555
556		case EVP_PKEY_CTRL_DIGESTINIT:
557		pk = EVP_PKEY_CTX_get0_pkey(ctx);
558		key = EVP_PKEY_get0(pk);
559		if (!HMAC_Init_ex(hctx->ctx, key->data, key->length, hctx->md, NULL))
560		return 0;
561		break;
562
563		default:
564		return -2;
565
566		}
567		return 1;
568		}
569
570		static int ossl_hmac_ctrl_str(EVP_PKEY_CTX *ctx,
571		const char type, const char value)
572		{
573		if (!value) {
574		return 0;
575		}
576		if (strcmp(type, "key") == 0) {
577		void p = (void )value;
578		return ossl_hmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, -1, p);
579		}
580		if (strcmp(type, "hexkey") == 0) {
581		unsigned char *key;
582		int r;
583		long keylen;
584		key = OPENSSL_hexstr2buf(value, &keylen);
585		if (!key)
586		return 0;
587		r = ossl_hmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, keylen, key);
588		OPENSSL_free(key);
589		return r;
590		}
591		return -2;
592		}
593
594		static EVP_PKEY_METHOD *ossl_hmac_meth;
595
596		static int ossl_register_hmac_meth(void)
597		{
598		EVP_PKEY_METHOD *meth;
599		meth = EVP_PKEY_meth_new(EVP_PKEY_HMAC, 0);
600		if (meth == NULL)
601		return 0;
602		EVP_PKEY_meth_set_init(meth, ossl_hmac_init);
603		EVP_PKEY_meth_set_copy(meth, ossl_hmac_copy);
604		EVP_PKEY_meth_set_cleanup(meth, ossl_hmac_cleanup);
605
606		EVP_PKEY_meth_set_keygen(meth, 0, ossl_hmac_keygen);
607
608		EVP_PKEY_meth_set_signctx(meth, ossl_hmac_signctx_init,
609		ossl_hmac_signctx);
610
611		EVP_PKEY_meth_set_ctrl(meth, ossl_hmac_ctrl, ossl_hmac_ctrl_str);
612		ossl_hmac_meth = meth;
613		return 1;
614		}
615
616		static int ossl_pkey_meths(ENGINE e, EVP_PKEY_METHOD *pmeth,
617		const int **nids, int nid)
618		{
619		static int ossl_pkey_nids[] = {
620		EVP_PKEY_HMAC,
621		0
622		};
623		if (!pmeth) {
624		*nids = ossl_pkey_nids;
625		return 1;
626		}
627
628		if (nid == EVP_PKEY_HMAC) {
629		*pmeth = ossl_hmac_meth;
630		return 1;
631		}
632
633		*pmeth = NULL;
634		return 0;
635		}
636
637		#endif
638
639		int openssl_destroy(ENGINE *e)
640	0	{
641	0	test_sha_md_destroy();
642	0	#ifdef TEST_ENG_OPENSSL_RC4
643	0	test_r4_cipher_destroy();
644	0	test_r4_40_cipher_destroy();
645	0	#endif
646	0	return 1;
647	0	}
648