* 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 "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
+#if defined(OPENSSL_NO_SHA) || defined(OPENSSL_NO_SHA0) || defined(OPENSSL_NO_SHA1)
+#undef TEST_ENG_OPENSSL_SHA
+#undef TEST_ENG_OPENSSL_SHA_OTHERS
+#undef TEST_ENG_OPENSSL_SHA_P_INIT
+#undef TEST_ENG_OPENSSL_SHA_P_UPDATE
+#undef TEST_ENG_OPENSSL_SHA_P_FINAL
+#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";
-/* As this is only ever called once, there's no need for locking
- * (indeed - the lock will already be held by our caller!!!) */
-ENGINE *ENGINE_openssl(void)
+/* This internal function is used by ENGINE_openssl() and possibly by the
+ * "dynamic" ENGINE support too */
+static int bind_helper(ENGINE *e)
{
- ENGINE *ret = ENGINE_new();
- if(!ret)
- return NULL;
- if(!ENGINE_set_id(ret, engine_openssl_id) ||
- !ENGINE_set_name(ret, engine_openssl_name) ||
+ 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(ret, RSA_get_default_method()) ||
+ || !ENGINE_set_RSA(e, RSA_get_default_method())
#endif
#ifndef OPENSSL_NO_DSA
- !ENGINE_set_DSA(ret, DSA_get_default_method()) ||
+ || !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(ret, DH_get_default_method()) ||
+ || !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
- !ENGINE_set_RAND(ret, RAND_SSLeay()))
+ )
+ 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 int test_cipher_nids[] = {NID_rc4,NID_rc4_40};
+static 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 int test_digest_nids[] = {NID_sha1};
+static 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
projects / openssl.git / blobdiff