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openssl/crypto/engine/eng_openssl.c
Rich Salz 474e469bbd OPENSSL_NO_xxx cleanup: SHA 
Remove support for SHA0 and DSS0 (they were broken), and remove
the ability to attempt to build without SHA (it didn't work).
For simplicity, remove the option of not building various SHA algorithms;
you could argue that SHA_224/256/384/512 should be kept, since they're
like crypto algorithms, but I decided to go the other way.
So these options are gone:
	GENUINE_DSA         OPENSSL_NO_SHA0
	OPENSSL_NO_SHA      OPENSSL_NO_SHA1
	OPENSSL_NO_SHA224   OPENSSL_NO_SHA256
	OPENSSL_NO_SHA384   OPENSSL_NO_SHA512

Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-01-27 12:34:45 -05:00

627 lines
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/* crypto/engine/eng_openssl.c */
/*
* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL project
* 2000.
*/
/* ====================================================================
* Copyright (c) 1999-2001 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* licensing@OpenSSL.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
/* ====================================================================
* Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
* ECDH support in OpenSSL originally developed by
* SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
*/
#include <stdio.h>
#include <openssl/crypto.h>
#include "cryptlib.h"
#include <openssl/engine.h>
#include <openssl/dso.h>
#include <openssl/pem.h>
#include <openssl/evp.h>
#include <openssl/rand.h>
#ifndef OPENSSL_NO_RSA
# include <openssl/rsa.h>
#endif
#ifndef OPENSSL_NO_DSA
# include <openssl/dsa.h>
#endif
#ifndef OPENSSL_NO_DH
# include <openssl/dh.h>
#endif
#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
#define TEST_ENG_OPENSSL_PKEY
/* #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
#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)
#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_ECDH
|| !ENGINE_set_ECDH(e, ECDH_OpenSSL())
# endif
# ifndef OPENSSL_NO_ECDSA
|| !ENGINE_set_ECDSA(e, ECDSA_OpenSSL())
# endif
# ifndef OPENSSL_NO_DH
|| !ENGINE_set_DH(e, DH_get_default_method())
# endif
|| !ENGINE_set_RAND(e, RAND_SSLeay())
# 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)
return NULL;
if (!bind_helper(ret)) {
ENGINE_free(ret);
return NULL;
}
return ret;
}
void ENGINE_load_openssl(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
static const int test_cipher_nids[] = { NID_rc4, NID_rc4_40 };
static const int test_cipher_nids_number = 2;
typedef struct {
unsigned char key[TEST_RC4_KEY_SIZE];
RC4_KEY ks;
} TEST_RC4_KEY;
# define test(ctx) ((TEST_RC4_KEY *)(ctx)->cipher_data)
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 const EVP_CIPHER test_r4_cipher = {
NID_rc4,
1, TEST_RC4_KEY_SIZE, 0,
EVP_CIPH_VARIABLE_LENGTH,
test_rc4_init_key,
test_rc4_cipher,
NULL,
sizeof(TEST_RC4_KEY),
NULL,
NULL,
NULL,
NULL
};
static const EVP_CIPHER test_r4_40_cipher = {
NID_rc4_40,
1, 5 /* 40 bit */ , 0,
EVP_CIPH_VARIABLE_LENGTH,
test_rc4_init_key,
test_rc4_cipher,
NULL,
sizeof(TEST_RC4_KEY),
NULL,
NULL,
NULL,
NULL
};
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 */
*nids = test_cipher_nids;
return test_cipher_nids_number;
}
/* 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 const int test_digest_nids[] = { NID_sha1 };
static const int test_digest_nids_number = 1;
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(ctx->md_data);
}
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(ctx->md_data, 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, ctx->md_data);
}
static const EVP_MD test_sha_md = {
NID_sha1,
NID_sha1WithRSAEncryption,
SHA_DIGEST_LENGTH,
0,
test_sha1_init,
test_sha1_update,
test_sha1_final,
NULL,
NULL,
EVP_PKEY_RSA_method,
SHA_CBLOCK,
sizeof(EVP_MD *) + sizeof(SHA_CTX),
};
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 */
*nids = test_digest_nids;
return test_digest_nids_number;
}
/* 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;
hctx = OPENSSL_malloc(sizeof(OSSL_HMAC_PKEY_CTX));
if (!hctx)
return 0;
hctx->md = NULL;
hctx->ktmp.data = NULL;
hctx->ktmp.length = 0;
hctx->ktmp.flags = 0;
hctx->ktmp.type = V_ASN1_OCTET_STRING;
HMAC_CTX_init(&hctx->ctx);
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 int ossl_hmac_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
{
OSSL_HMAC_PKEY_CTX *sctx, *dctx;
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;
HMAC_CTX_init(&dctx->ctx);
if (!HMAC_CTX_copy(&dctx->ctx, &sctx->ctx))
return 0;
if (sctx->ktmp.data) {
if (!ASN1_OCTET_STRING_set(&dctx->ktmp,
sctx->ktmp.data, sctx->ktmp.length))
return 0;
}
return 1;
}
static void ossl_hmac_cleanup(EVP_PKEY_CTX *ctx)
{
OSSL_HMAC_PKEY_CTX *hctx;
hctx = EVP_PKEY_CTX_get_data(ctx);
HMAC_CTX_cleanup(&hctx->ctx);
if (hctx->ktmp.data) {
if (hctx->ktmp.length)
OPENSSL_cleanse(hctx->ktmp.data, hctx->ktmp.length);
OPENSSL_free(hctx->ktmp.data);
hctx->ktmp.data = NULL;
}
OPENSSL_free(hctx);
}
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(ctx->pctx);
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);
mctx->update = 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")) {
void *p = (void *)value;
return ossl_hmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, -1, p);
}
if (!strcmp(type, "hexkey")) {
unsigned char *key;
int r;
long keylen;
key = string_to_hex(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)
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
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