--- /dev/null
+/* crypto/engine/e_chil.c -*- mode: C; c-file-style: "eay" -*- */
+/* Written by Richard Levitte (richard@levitte.org), Geoff Thorpe
+ * (geoff@geoffthorpe.net) and Dr Stephen N Henson (steve@openssl.org)
+ * 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).
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <openssl/crypto.h>
+#include <openssl/pem.h>
+#include <openssl/dso.h>
+#include <openssl/engine.h>
+#include <openssl/ui.h>
+#include <openssl/rand.h>
+#ifndef OPENSSL_NO_RSA
+#include <openssl/rsa.h>
+#endif
+#ifndef OPENSSL_NO_DH
+#include <openssl/dh.h>
+#endif
+#include <openssl/bn.h>
+
+#ifndef OPENSSL_NO_HW
+#ifndef OPENSSL_NO_HW_CHIL
+
+/* Attribution notice: nCipher have said several times that it's OK for
+ * us to implement a general interface to their boxes, and recently declared
+ * their HWCryptoHook to be public, and therefore available for us to use.
+ * Thanks, nCipher.
+ *
+ * The hwcryptohook.h included here is from May 2000.
+ * [Richard Levitte]
+ */
+#ifdef FLAT_INC
+#include "hwcryptohook.h"
+#else
+#include "vendor_defns/hwcryptohook.h"
+#endif
+
+#define HWCRHK_LIB_NAME "CHIL engine"
+#include "e_chil_err.c"
+
+static int hwcrhk_destroy(ENGINE *e);
+static int hwcrhk_init(ENGINE *e);
+static int hwcrhk_finish(ENGINE *e);
+static int hwcrhk_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)(void));
+
+/* Functions to handle mutexes */
+static int hwcrhk_mutex_init(HWCryptoHook_Mutex*, HWCryptoHook_CallerContext*);
+static int hwcrhk_mutex_lock(HWCryptoHook_Mutex*);
+static void hwcrhk_mutex_unlock(HWCryptoHook_Mutex*);
+static void hwcrhk_mutex_destroy(HWCryptoHook_Mutex*);
+
+/* BIGNUM stuff */
+static int hwcrhk_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
+ const BIGNUM *m, BN_CTX *ctx);
+
+#ifndef OPENSSL_NO_RSA
+/* RSA stuff */
+static int hwcrhk_rsa_mod_exp(BIGNUM *r, const BIGNUM *I, RSA *rsa, BN_CTX *ctx);
+/* This function is aliased to mod_exp (with the mont stuff dropped). */
+static int hwcrhk_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
+ const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
+static int hwcrhk_rsa_finish(RSA *rsa);
+#endif
+
+#ifndef OPENSSL_NO_DH
+/* DH stuff */
+/* This function is alised to mod_exp (with the DH and mont dropped). */
+static int hwcrhk_mod_exp_dh(const DH *dh, BIGNUM *r,
+ const BIGNUM *a, const BIGNUM *p,
+ const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
+#endif
+
+/* RAND stuff */
+static int hwcrhk_rand_bytes(unsigned char *buf, int num);
+static int hwcrhk_rand_status(void);
+
+/* KM stuff */
+static EVP_PKEY *hwcrhk_load_privkey(ENGINE *eng, const char *key_id,
+ UI_METHOD *ui_method, void *callback_data);
+static EVP_PKEY *hwcrhk_load_pubkey(ENGINE *eng, const char *key_id,
+ UI_METHOD *ui_method, void *callback_data);
+
+/* Interaction stuff */
+static int hwcrhk_insert_card(const char *prompt_info,
+ const char *wrong_info,
+ HWCryptoHook_PassphraseContext *ppctx,
+ HWCryptoHook_CallerContext *cactx);
+static int hwcrhk_get_pass(const char *prompt_info,
+ int *len_io, char *buf,
+ HWCryptoHook_PassphraseContext *ppctx,
+ HWCryptoHook_CallerContext *cactx);
+static void hwcrhk_log_message(void *logstr, const char *message);
+
+/* The definitions for control commands specific to this engine */
+#define HWCRHK_CMD_SO_PATH ENGINE_CMD_BASE
+#define HWCRHK_CMD_FORK_CHECK (ENGINE_CMD_BASE + 1)
+#define HWCRHK_CMD_THREAD_LOCKING (ENGINE_CMD_BASE + 2)
+#define HWCRHK_CMD_SET_USER_INTERFACE (ENGINE_CMD_BASE + 3)
+#define HWCRHK_CMD_SET_CALLBACK_DATA (ENGINE_CMD_BASE + 4)
+static const ENGINE_CMD_DEFN hwcrhk_cmd_defns[] = {
+ {HWCRHK_CMD_SO_PATH,
+ "SO_PATH",
+ "Specifies the path to the 'hwcrhk' shared library",
+ ENGINE_CMD_FLAG_STRING},
+ {HWCRHK_CMD_FORK_CHECK,
+ "FORK_CHECK",
+ "Turns fork() checking on (non-zero) or off (zero)",
+ ENGINE_CMD_FLAG_NUMERIC},
+ {HWCRHK_CMD_THREAD_LOCKING,
+ "THREAD_LOCKING",
+ "Turns thread-safe locking on (zero) or off (non-zero)",
+ ENGINE_CMD_FLAG_NUMERIC},
+ {HWCRHK_CMD_SET_USER_INTERFACE,
+ "SET_USER_INTERFACE",
+ "Set the global user interface (internal)",
+ ENGINE_CMD_FLAG_INTERNAL},
+ {HWCRHK_CMD_SET_CALLBACK_DATA,
+ "SET_CALLBACK_DATA",
+ "Set the global user interface extra data (internal)",
+ ENGINE_CMD_FLAG_INTERNAL},
+ {0, NULL, NULL, 0}
+ };
+
+#ifndef OPENSSL_NO_RSA
+/* Our internal RSA_METHOD that we provide pointers to */
+static RSA_METHOD hwcrhk_rsa =
+ {
+ "CHIL RSA method",
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ hwcrhk_rsa_mod_exp,
+ hwcrhk_mod_exp_mont,
+ NULL,
+ hwcrhk_rsa_finish,
+ 0,
+ NULL,
+ NULL,
+ NULL,
+ NULL
+ };
+#endif
+
+#ifndef OPENSSL_NO_DH
+/* Our internal DH_METHOD that we provide pointers to */
+static DH_METHOD hwcrhk_dh =
+ {
+ "CHIL DH method",
+ NULL,
+ NULL,
+ hwcrhk_mod_exp_dh,
+ NULL,
+ NULL,
+ 0,
+ NULL,
+ NULL
+ };
+#endif
+
+static RAND_METHOD hwcrhk_rand =
+ {
+ /* "CHIL RAND method", */
+ NULL,
+ hwcrhk_rand_bytes,
+ NULL,
+ NULL,
+ hwcrhk_rand_bytes,
+ hwcrhk_rand_status,
+ };
+
+/* Constants used when creating the ENGINE */
+static const char *engine_hwcrhk_id = "chil";
+static const char *engine_hwcrhk_name = "CHIL hardware engine support";
+#ifndef OPENSSL_NO_DYNAMIC_ENGINE
+/* Compatibility hack, the dynamic library uses this form in the path */
+static const char *engine_hwcrhk_id_alt = "ncipher";
+#endif
+
+/* Internal stuff for HWCryptoHook */
+
+/* Some structures needed for proper use of thread locks */
+/* hwcryptohook.h has some typedefs that turn struct HWCryptoHook_MutexValue
+ into HWCryptoHook_Mutex */
+struct HWCryptoHook_MutexValue
+ {
+ int lockid;
+ };
+
+/* hwcryptohook.h has some typedefs that turn
+ struct HWCryptoHook_PassphraseContextValue
+ into HWCryptoHook_PassphraseContext */
+struct HWCryptoHook_PassphraseContextValue
+ {
+ UI_METHOD *ui_method;
+ void *callback_data;
+ };
+
+/* hwcryptohook.h has some typedefs that turn
+ struct HWCryptoHook_CallerContextValue
+ into HWCryptoHook_CallerContext */
+struct HWCryptoHook_CallerContextValue
+ {
+ pem_password_cb *password_callback; /* Deprecated! Only present for
+ backward compatibility! */
+ UI_METHOD *ui_method;
+ void *callback_data;
+ };
+
+/* The MPI structure in HWCryptoHook is pretty compatible with OpenSSL
+ BIGNUM's, so lets define a couple of conversion macros */
+#define BN2MPI(mp, bn) \
+ {mp.size = bn->top * sizeof(BN_ULONG); mp.buf = (unsigned char *)bn->d;}
+#define MPI2BN(bn, mp) \
+ {mp.size = bn->dmax * sizeof(BN_ULONG); mp.buf = (unsigned char *)bn->d;}
+
+static BIO *logstream = NULL;
+static int disable_mutex_callbacks = 0;
+
+/* One might wonder why these are needed, since one can pass down at least
+ a UI_METHOD and a pointer to callback data to the key-loading functions.
+ The thing is that the ModExp and RSAImmed functions can load keys as well,
+ if the data they get is in a special, nCipher-defined format (hint: if you
+ look at the private exponent of the RSA data as a string, you'll see this
+ string: "nCipher KM tool key id", followed by some bytes, followed a key
+ identity string, followed by more bytes. This happens when you use "embed"
+ keys instead of "hwcrhk" keys). Unfortunately, those functions do not take
+ any passphrase or caller context, and our functions can't really take any
+ callback data either. Still, the "insert_card" and "get_passphrase"
+ callbacks may be called down the line, and will need to know what user
+ interface callbacks to call, and having callback data from the application
+ may be a nice thing as well, so we need to keep track of that globally. */
+static HWCryptoHook_CallerContext password_context = { NULL, NULL, NULL };
+
+/* Stuff to pass to the HWCryptoHook library */
+static HWCryptoHook_InitInfo hwcrhk_globals = {
+ HWCryptoHook_InitFlags_SimpleForkCheck, /* Flags */
+ &logstream, /* logstream */
+ sizeof(BN_ULONG), /* limbsize */
+ 0, /* mslimb first: false for BNs */
+ -1, /* msbyte first: use native */
+ 0, /* Max mutexes, 0 = no small limit */
+ 0, /* Max simultaneous, 0 = default */
+
+ /* The next few are mutex stuff: we write wrapper functions
+ around the OS mutex functions. We initialise them to 0
+ here, and change that to actual function pointers in hwcrhk_init()
+ if dynamic locks are supported (that is, if the application
+ programmer has made sure of setting up callbacks bafore starting
+ this engine) *and* if disable_mutex_callbacks hasn't been set by
+ a call to ENGINE_ctrl(ENGINE_CTRL_CHIL_NO_LOCKING). */
+ sizeof(HWCryptoHook_Mutex),
+ 0,
+ 0,
+ 0,
+ 0,
+
+ /* The next few are condvar stuff: we write wrapper functions
+ round the OS functions. Currently not implemented and not
+ and absolute necessity even in threaded programs, therefore
+ 0'ed. Will hopefully be implemented some day, since it
+ enhances the efficiency of HWCryptoHook. */
+ 0, /* sizeof(HWCryptoHook_CondVar), */
+ 0, /* hwcrhk_cv_init, */
+ 0, /* hwcrhk_cv_wait, */
+ 0, /* hwcrhk_cv_signal, */
+ 0, /* hwcrhk_cv_broadcast, */
+ 0, /* hwcrhk_cv_destroy, */
+
+ hwcrhk_get_pass, /* pass phrase */
+ hwcrhk_insert_card, /* insert a card */
+ hwcrhk_log_message /* Log message */
+};
+
+
+/* Now, to our own code */
+
+/* This internal function is used by ENGINE_chil() and possibly by the
+ * "dynamic" ENGINE support too */
+static int bind_helper(ENGINE *e)
+ {
+#ifndef OPENSSL_NO_RSA
+ const RSA_METHOD *meth1;
+#endif
+#ifndef OPENSSL_NO_DH
+ const DH_METHOD *meth2;
+#endif
+ if(!ENGINE_set_id(e, engine_hwcrhk_id) ||
+ !ENGINE_set_name(e, engine_hwcrhk_name) ||
+#ifndef OPENSSL_NO_RSA
+ !ENGINE_set_RSA(e, &hwcrhk_rsa) ||
+#endif
+#ifndef OPENSSL_NO_DH
+ !ENGINE_set_DH(e, &hwcrhk_dh) ||
+#endif
+ !ENGINE_set_RAND(e, &hwcrhk_rand) ||
+ !ENGINE_set_destroy_function(e, hwcrhk_destroy) ||
+ !ENGINE_set_init_function(e, hwcrhk_init) ||
+ !ENGINE_set_finish_function(e, hwcrhk_finish) ||
+ !ENGINE_set_ctrl_function(e, hwcrhk_ctrl) ||
+ !ENGINE_set_load_privkey_function(e, hwcrhk_load_privkey) ||
+ !ENGINE_set_load_pubkey_function(e, hwcrhk_load_pubkey) ||
+ !ENGINE_set_cmd_defns(e, hwcrhk_cmd_defns))
+ return 0;
+
+#ifndef OPENSSL_NO_RSA
+ /* We know that the "PKCS1_SSLeay()" functions hook properly
+ * to the cswift-specific mod_exp and mod_exp_crt so we use
+ * those functions. NB: We don't use ENGINE_openssl() or
+ * anything "more generic" because something like the RSAref
+ * code may not hook properly, and if you own one of these
+ * cards then you have the right to do RSA operations on it
+ * anyway! */
+ meth1 = RSA_PKCS1_SSLeay();
+ hwcrhk_rsa.rsa_pub_enc = meth1->rsa_pub_enc;
+ hwcrhk_rsa.rsa_pub_dec = meth1->rsa_pub_dec;
+ hwcrhk_rsa.rsa_priv_enc = meth1->rsa_priv_enc;
+ hwcrhk_rsa.rsa_priv_dec = meth1->rsa_priv_dec;
+#endif
+
+#ifndef OPENSSL_NO_DH
+ /* Much the same for Diffie-Hellman */
+ meth2 = DH_OpenSSL();
+ hwcrhk_dh.generate_key = meth2->generate_key;
+ hwcrhk_dh.compute_key = meth2->compute_key;
+#endif
+
+ /* Ensure the hwcrhk error handling is set up */
+ ERR_load_HWCRHK_strings();
+ return 1;
+ }
+
+#ifdef OPENSSL_NO_DYNAMIC_ENGINE
+static ENGINE *engine_chil(void)
+ {
+ ENGINE *ret = ENGINE_new();
+ if(!ret)
+ return NULL;
+ if(!bind_helper(ret))
+ {
+ ENGINE_free(ret);
+ return NULL;
+ }
+ return ret;
+ }
+
+void ENGINE_load_chil(void)
+ {
+ /* Copied from eng_[openssl|dyn].c */
+ ENGINE *toadd = engine_chil();
+ if(!toadd) return;
+ ENGINE_add(toadd);
+ ENGINE_free(toadd);
+ ERR_clear_error();
+ }
+#endif
+
+/* This is a process-global DSO handle used for loading and unloading
+ * the HWCryptoHook library. NB: This is only set (or unset) during an
+ * init() or finish() call (reference counts permitting) and they're
+ * operating with global locks, so this should be thread-safe
+ * implicitly. */
+static DSO *hwcrhk_dso = NULL;
+static HWCryptoHook_ContextHandle hwcrhk_context = 0;
+#ifndef OPENSSL_NO_RSA
+static int hndidx_rsa = -1; /* Index for KM handle. Not really used yet. */
+#endif
+
+/* These are the function pointers that are (un)set when the library has
+ * successfully (un)loaded. */
+static HWCryptoHook_Init_t *p_hwcrhk_Init = NULL;
+static HWCryptoHook_Finish_t *p_hwcrhk_Finish = NULL;
+static HWCryptoHook_ModExp_t *p_hwcrhk_ModExp = NULL;
+#ifndef OPENSSL_NO_RSA
+static HWCryptoHook_RSA_t *p_hwcrhk_RSA = NULL;
+#endif
+static HWCryptoHook_RandomBytes_t *p_hwcrhk_RandomBytes = NULL;
+#ifndef OPENSSL_NO_RSA
+static HWCryptoHook_RSALoadKey_t *p_hwcrhk_RSALoadKey = NULL;
+static HWCryptoHook_RSAGetPublicKey_t *p_hwcrhk_RSAGetPublicKey = NULL;
+static HWCryptoHook_RSAUnloadKey_t *p_hwcrhk_RSAUnloadKey = NULL;
+#endif
+static HWCryptoHook_ModExpCRT_t *p_hwcrhk_ModExpCRT = NULL;
+
+/* Used in the DSO operations. */
+static const char *HWCRHK_LIBNAME = NULL;
+static void free_HWCRHK_LIBNAME(void)
+ {
+ if(HWCRHK_LIBNAME)
+ OPENSSL_free((void*)HWCRHK_LIBNAME);
+ HWCRHK_LIBNAME = NULL;
+ }
+static const char *get_HWCRHK_LIBNAME(void)
+ {
+ if(HWCRHK_LIBNAME)
+ return HWCRHK_LIBNAME;
+ return "nfhwcrhk";
+ }
+static long set_HWCRHK_LIBNAME(const char *name)
+ {
+ free_HWCRHK_LIBNAME();
+ return (((HWCRHK_LIBNAME = BUF_strdup(name)) != NULL) ? 1 : 0);
+ }
+static const char *n_hwcrhk_Init = "HWCryptoHook_Init";
+static const char *n_hwcrhk_Finish = "HWCryptoHook_Finish";
+static const char *n_hwcrhk_ModExp = "HWCryptoHook_ModExp";
+#ifndef OPENSSL_NO_RSA
+static const char *n_hwcrhk_RSA = "HWCryptoHook_RSA";
+#endif
+static const char *n_hwcrhk_RandomBytes = "HWCryptoHook_RandomBytes";
+#ifndef OPENSSL_NO_RSA
+static const char *n_hwcrhk_RSALoadKey = "HWCryptoHook_RSALoadKey";
+static const char *n_hwcrhk_RSAGetPublicKey = "HWCryptoHook_RSAGetPublicKey";
+static const char *n_hwcrhk_RSAUnloadKey = "HWCryptoHook_RSAUnloadKey";
+#endif
+static const char *n_hwcrhk_ModExpCRT = "HWCryptoHook_ModExpCRT";
+
+/* HWCryptoHook library functions and mechanics - these are used by the
+ * higher-level functions further down. NB: As and where there's no
+ * error checking, take a look lower down where these functions are
+ * called, the checking and error handling is probably down there. */
+
+/* utility function to obtain a context */
+static int get_context(HWCryptoHook_ContextHandle *hac,
+ HWCryptoHook_CallerContext *cac)
+ {
+ char tempbuf[1024];
+ HWCryptoHook_ErrMsgBuf rmsg;
+
+ rmsg.buf = tempbuf;
+ rmsg.size = sizeof(tempbuf);
+
+ *hac = p_hwcrhk_Init(&hwcrhk_globals, sizeof(hwcrhk_globals), &rmsg,
+ cac);
+ if (!*hac)
+ return 0;
+ return 1;
+ }
+
+/* similarly to release one. */
+static void release_context(HWCryptoHook_ContextHandle hac)
+ {
+ p_hwcrhk_Finish(hac);
+ }
+
+/* Destructor (complements the "ENGINE_chil()" constructor) */
+static int hwcrhk_destroy(ENGINE *e)
+ {
+ free_HWCRHK_LIBNAME();
+ ERR_unload_HWCRHK_strings();
+ return 1;
+ }
+
+/* (de)initialisation functions. */
+static int hwcrhk_init(ENGINE *e)
+ {
+ HWCryptoHook_Init_t *p1;
+ HWCryptoHook_Finish_t *p2;
+ HWCryptoHook_ModExp_t *p3;
+#ifndef OPENSSL_NO_RSA
+ HWCryptoHook_RSA_t *p4;
+ HWCryptoHook_RSALoadKey_t *p5;
+ HWCryptoHook_RSAGetPublicKey_t *p6;
+ HWCryptoHook_RSAUnloadKey_t *p7;
+#endif
+ HWCryptoHook_RandomBytes_t *p8;
+ HWCryptoHook_ModExpCRT_t *p9;
+
+ if(hwcrhk_dso != NULL)
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_INIT,HWCRHK_R_ALREADY_LOADED);
+ goto err;
+ }
+ /* Attempt to load libnfhwcrhk.so/nfhwcrhk.dll/whatever. */
+ hwcrhk_dso = DSO_load(NULL, get_HWCRHK_LIBNAME(), NULL, 0);
+ if(hwcrhk_dso == NULL)
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_INIT,HWCRHK_R_DSO_FAILURE);
+ goto err;
+ }
+ if(!(p1 = (HWCryptoHook_Init_t *)
+ DSO_bind_func(hwcrhk_dso, n_hwcrhk_Init)) ||
+ !(p2 = (HWCryptoHook_Finish_t *)
+ DSO_bind_func(hwcrhk_dso, n_hwcrhk_Finish)) ||
+ !(p3 = (HWCryptoHook_ModExp_t *)
+ DSO_bind_func(hwcrhk_dso, n_hwcrhk_ModExp)) ||
+#ifndef OPENSSL_NO_RSA
+ !(p4 = (HWCryptoHook_RSA_t *)
+ DSO_bind_func(hwcrhk_dso, n_hwcrhk_RSA)) ||
+ !(p5 = (HWCryptoHook_RSALoadKey_t *)
+ DSO_bind_func(hwcrhk_dso, n_hwcrhk_RSALoadKey)) ||
+ !(p6 = (HWCryptoHook_RSAGetPublicKey_t *)
+ DSO_bind_func(hwcrhk_dso, n_hwcrhk_RSAGetPublicKey)) ||
+ !(p7 = (HWCryptoHook_RSAUnloadKey_t *)
+ DSO_bind_func(hwcrhk_dso, n_hwcrhk_RSAUnloadKey)) ||
+#endif
+ !(p8 = (HWCryptoHook_RandomBytes_t *)
+ DSO_bind_func(hwcrhk_dso, n_hwcrhk_RandomBytes)) ||
+ !(p9 = (HWCryptoHook_ModExpCRT_t *)
+ DSO_bind_func(hwcrhk_dso, n_hwcrhk_ModExpCRT)))
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_INIT,HWCRHK_R_DSO_FAILURE);
+ goto err;
+ }
+ /* Copy the pointers */
+ p_hwcrhk_Init = p1;
+ p_hwcrhk_Finish = p2;
+ p_hwcrhk_ModExp = p3;
+#ifndef OPENSSL_NO_RSA
+ p_hwcrhk_RSA = p4;
+ p_hwcrhk_RSALoadKey = p5;
+ p_hwcrhk_RSAGetPublicKey = p6;
+ p_hwcrhk_RSAUnloadKey = p7;
+#endif
+ p_hwcrhk_RandomBytes = p8;
+ p_hwcrhk_ModExpCRT = p9;
+
+ /* Check if the application decided to support dynamic locks,
+ and if it does, use them. */
+ if (disable_mutex_callbacks == 0)
+ {
+ if (CRYPTO_get_dynlock_create_callback() != NULL &&
+ CRYPTO_get_dynlock_lock_callback() != NULL &&
+ CRYPTO_get_dynlock_destroy_callback() != NULL)
+ {
+ hwcrhk_globals.mutex_init = hwcrhk_mutex_init;
+ hwcrhk_globals.mutex_acquire = hwcrhk_mutex_lock;
+ hwcrhk_globals.mutex_release = hwcrhk_mutex_unlock;
+ hwcrhk_globals.mutex_destroy = hwcrhk_mutex_destroy;
+ }
+ }
+
+ /* Try and get a context - if not, we may have a DSO but no
+ * accelerator! */
+ if(!get_context(&hwcrhk_context, &password_context))
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_INIT,HWCRHK_R_UNIT_FAILURE);
+ goto err;
+ }
+ /* Everything's fine. */
+#ifndef OPENSSL_NO_RSA
+ if (hndidx_rsa == -1)
+ hndidx_rsa = RSA_get_ex_new_index(0,
+ "nFast HWCryptoHook RSA key handle",
+ NULL, NULL, NULL);
+#endif
+ return 1;
+err:
+ if(hwcrhk_dso)
+ DSO_free(hwcrhk_dso);
+ hwcrhk_dso = NULL;
+ p_hwcrhk_Init = NULL;
+ p_hwcrhk_Finish = NULL;
+ p_hwcrhk_ModExp = NULL;
+#ifndef OPENSSL_NO_RSA
+ p_hwcrhk_RSA = NULL;
+ p_hwcrhk_RSALoadKey = NULL;
+ p_hwcrhk_RSAGetPublicKey = NULL;
+ p_hwcrhk_RSAUnloadKey = NULL;
+#endif
+ p_hwcrhk_ModExpCRT = NULL;
+ p_hwcrhk_RandomBytes = NULL;
+ return 0;
+ }
+
+static int hwcrhk_finish(ENGINE *e)
+ {
+ int to_return = 1;
+ free_HWCRHK_LIBNAME();
+ if(hwcrhk_dso == NULL)
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_FINISH,HWCRHK_R_NOT_LOADED);
+ to_return = 0;
+ goto err;
+ }
+ release_context(hwcrhk_context);
+ if(!DSO_free(hwcrhk_dso))
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_FINISH,HWCRHK_R_DSO_FAILURE);
+ to_return = 0;
+ goto err;
+ }
+ err:
+ if (logstream)
+ BIO_free(logstream);
+ hwcrhk_dso = NULL;
+ p_hwcrhk_Init = NULL;
+ p_hwcrhk_Finish = NULL;
+ p_hwcrhk_ModExp = NULL;
+#ifndef OPENSSL_NO_RSA
+ p_hwcrhk_RSA = NULL;
+ p_hwcrhk_RSALoadKey = NULL;
+ p_hwcrhk_RSAGetPublicKey = NULL;
+ p_hwcrhk_RSAUnloadKey = NULL;
+#endif
+ p_hwcrhk_ModExpCRT = NULL;
+ p_hwcrhk_RandomBytes = NULL;
+ return to_return;
+ }
+
+static int hwcrhk_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)(void))
+ {
+ int to_return = 1;
+
+ switch(cmd)
+ {
+ case HWCRHK_CMD_SO_PATH:
+ if(hwcrhk_dso)
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_CTRL,HWCRHK_R_ALREADY_LOADED);
+ return 0;
+ }
+ if(p == NULL)
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_CTRL,ERR_R_PASSED_NULL_PARAMETER);
+ return 0;
+ }
+ return set_HWCRHK_LIBNAME((const char *)p);
+ case ENGINE_CTRL_SET_LOGSTREAM:
+ {
+ BIO *bio = (BIO *)p;
+
+ CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
+ if (logstream)
+ {
+ BIO_free(logstream);
+ logstream = NULL;
+ }
+ if (CRYPTO_add(&bio->references,1,CRYPTO_LOCK_BIO) > 1)
+ logstream = bio;
+ else
+ HWCRHKerr(HWCRHK_F_HWCRHK_CTRL,HWCRHK_R_BIO_WAS_FREED);
+ }
+ CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
+ break;
+ case ENGINE_CTRL_SET_PASSWORD_CALLBACK:
+ CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
+ password_context.password_callback = (pem_password_cb *)f;
+ CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
+ break;
+ case ENGINE_CTRL_SET_USER_INTERFACE:
+ case HWCRHK_CMD_SET_USER_INTERFACE:
+ CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
+ password_context.ui_method = (UI_METHOD *)p;
+ CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
+ break;
+ case ENGINE_CTRL_SET_CALLBACK_DATA:
+ case HWCRHK_CMD_SET_CALLBACK_DATA:
+ CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
+ password_context.callback_data = p;
+ CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
+ break;
+ /* this enables or disables the "SimpleForkCheck" flag used in the
+ * initialisation structure. */
+ case ENGINE_CTRL_CHIL_SET_FORKCHECK:
+ case HWCRHK_CMD_FORK_CHECK:
+ CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
+ if(i)
+ hwcrhk_globals.flags |=
+ HWCryptoHook_InitFlags_SimpleForkCheck;
+ else
+ hwcrhk_globals.flags &=
+ ~HWCryptoHook_InitFlags_SimpleForkCheck;
+ CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
+ break;
+ /* This will prevent the initialisation function from "installing"
+ * the mutex-handling callbacks, even if they are available from
+ * within the library (or were provided to the library from the
+ * calling application). This is to remove any baggage for
+ * applications not using multithreading. */
+ case ENGINE_CTRL_CHIL_NO_LOCKING:
+ CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
+ disable_mutex_callbacks = 1;
+ CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
+ break;
+ case HWCRHK_CMD_THREAD_LOCKING:
+ CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
+ disable_mutex_callbacks = ((i == 0) ? 0 : 1);
+ CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
+ break;
+
+ /* The command isn't understood by this engine */
+ default:
+ HWCRHKerr(HWCRHK_F_HWCRHK_CTRL,
+ HWCRHK_R_CTRL_COMMAND_NOT_IMPLEMENTED);
+ to_return = 0;
+ break;
+ }
+
+ return to_return;
+ }
+
+static EVP_PKEY *hwcrhk_load_privkey(ENGINE *eng, const char *key_id,
+ UI_METHOD *ui_method, void *callback_data)
+ {
+#ifndef OPENSSL_NO_RSA
+ RSA *rtmp = NULL;
+#endif
+ EVP_PKEY *res = NULL;
+#ifndef OPENSSL_NO_RSA
+ HWCryptoHook_MPI e, n;
+ HWCryptoHook_RSAKeyHandle *hptr;
+#endif
+#if !defined(OPENSSL_NO_RSA)
+ char tempbuf[1024];
+ HWCryptoHook_ErrMsgBuf rmsg;
+ HWCryptoHook_PassphraseContext ppctx;
+#endif
+
+#if !defined(OPENSSL_NO_RSA)
+ rmsg.buf = tempbuf;
+ rmsg.size = sizeof(tempbuf);
+#endif
+
+ if(!hwcrhk_context)
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_LOAD_PRIVKEY,
+ HWCRHK_R_NOT_INITIALISED);
+ goto err;
+ }
+#ifndef OPENSSL_NO_RSA
+ hptr = OPENSSL_malloc(sizeof(HWCryptoHook_RSAKeyHandle));
+ if (!hptr)
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_LOAD_PRIVKEY,
+ ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ ppctx.ui_method = ui_method;
+ ppctx.callback_data = callback_data;
+ if (p_hwcrhk_RSALoadKey(hwcrhk_context, key_id, hptr,
+ &rmsg, &ppctx))
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_LOAD_PRIVKEY,
+ HWCRHK_R_CHIL_ERROR);
+ ERR_add_error_data(1,rmsg.buf);
+ goto err;
+ }
+ if (!*hptr)
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_LOAD_PRIVKEY,
+ HWCRHK_R_NO_KEY);
+ goto err;
+ }
+#endif
+#ifndef OPENSSL_NO_RSA
+ rtmp = RSA_new_method(eng);
+ RSA_set_ex_data(rtmp, hndidx_rsa, (char *)hptr);
+ rtmp->e = BN_new();
+ rtmp->n = BN_new();
+ rtmp->flags |= RSA_FLAG_EXT_PKEY;
+ MPI2BN(rtmp->e, e);
+ MPI2BN(rtmp->n, n);
+ if (p_hwcrhk_RSAGetPublicKey(*hptr, &n, &e, &rmsg)
+ != HWCRYPTOHOOK_ERROR_MPISIZE)
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_LOAD_PRIVKEY,HWCRHK_R_CHIL_ERROR);
+ ERR_add_error_data(1,rmsg.buf);
+ goto err;
+ }
+
+ bn_expand2(rtmp->e, e.size/sizeof(BN_ULONG));
+ bn_expand2(rtmp->n, n.size/sizeof(BN_ULONG));
+ MPI2BN(rtmp->e, e);
+ MPI2BN(rtmp->n, n);
+
+ if (p_hwcrhk_RSAGetPublicKey(*hptr, &n, &e, &rmsg))
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_LOAD_PRIVKEY,
+ HWCRHK_R_CHIL_ERROR);
+ ERR_add_error_data(1,rmsg.buf);
+ goto err;
+ }
+ rtmp->e->top = e.size / sizeof(BN_ULONG);
+ bn_fix_top(rtmp->e);
+ rtmp->n->top = n.size / sizeof(BN_ULONG);
+ bn_fix_top(rtmp->n);
+
+ res = EVP_PKEY_new();
+ EVP_PKEY_assign_RSA(res, rtmp);
+#endif
+
+ if (!res)
+ HWCRHKerr(HWCRHK_F_HWCRHK_LOAD_PRIVKEY,
+ HWCRHK_R_PRIVATE_KEY_ALGORITHMS_DISABLED);
+
+ return res;
+ err:
+#ifndef OPENSSL_NO_RSA
+ if (rtmp)
+ RSA_free(rtmp);
+#endif
+ return NULL;
+ }
+
+static EVP_PKEY *hwcrhk_load_pubkey(ENGINE *eng, const char *key_id,
+ UI_METHOD *ui_method, void *callback_data)
+ {
+ EVP_PKEY *res = NULL;
+
+#ifndef OPENSSL_NO_RSA
+ res = hwcrhk_load_privkey(eng, key_id,
+ ui_method, callback_data);
+#endif
+
+ if (res)
+ switch(res->type)
+ {
+#ifndef OPENSSL_NO_RSA
+ case EVP_PKEY_RSA:
+ {
+ RSA *rsa = NULL;
+
+ CRYPTO_w_lock(CRYPTO_LOCK_EVP_PKEY);
+ rsa = res->pkey.rsa;
+ res->pkey.rsa = RSA_new();
+ res->pkey.rsa->n = rsa->n;
+ res->pkey.rsa->e = rsa->e;
+ rsa->n = NULL;
+ rsa->e = NULL;
+ CRYPTO_w_unlock(CRYPTO_LOCK_EVP_PKEY);
+ RSA_free(rsa);
+ }
+ break;
+#endif
+ default:
+ HWCRHKerr(HWCRHK_F_HWCRHK_LOAD_PUBKEY,
+ HWCRHK_R_CTRL_COMMAND_NOT_IMPLEMENTED);
+ goto err;
+ }
+
+ return res;
+ err:
+ if (res)
+ EVP_PKEY_free(res);
+ return NULL;
+ }
+
+/* A little mod_exp */
+static int hwcrhk_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
+ const BIGNUM *m, BN_CTX *ctx)
+ {
+ char tempbuf[1024];
+ HWCryptoHook_ErrMsgBuf rmsg;
+ /* Since HWCryptoHook_MPI is pretty compatible with BIGNUM's,
+ we use them directly, plus a little macro magic. We only
+ thing we need to make sure of is that enough space is allocated. */
+ HWCryptoHook_MPI m_a, m_p, m_n, m_r;
+ int to_return, ret;
+
+ to_return = 0; /* expect failure */
+ rmsg.buf = tempbuf;
+ rmsg.size = sizeof(tempbuf);
+
+ if(!hwcrhk_context)
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_MOD_EXP,HWCRHK_R_NOT_INITIALISED);
+ goto err;
+ }
+ /* Prepare the params */
+ bn_expand2(r, m->top); /* Check for error !! */
+ BN2MPI(m_a, a);
+ BN2MPI(m_p, p);
+ BN2MPI(m_n, m);
+ MPI2BN(r, m_r);
+
+ /* Perform the operation */
+ ret = p_hwcrhk_ModExp(hwcrhk_context, m_a, m_p, m_n, &m_r, &rmsg);
+
+ /* Convert the response */
+ r->top = m_r.size / sizeof(BN_ULONG);
+ bn_fix_top(r);
+
+ if (ret < 0)
+ {
+ /* FIXME: When this error is returned, HWCryptoHook is
+ telling us that falling back to software computation
+ might be a good thing. */
+ if(ret == HWCRYPTOHOOK_ERROR_FALLBACK)
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_MOD_EXP,HWCRHK_R_REQUEST_FALLBACK);
+ }
+ else
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_MOD_EXP,HWCRHK_R_REQUEST_FAILED);
+ }
+ ERR_add_error_data(1,rmsg.buf);
+ goto err;
+ }
+
+ to_return = 1;
+err:
+ return to_return;
+ }
+
+#ifndef OPENSSL_NO_RSA
+static int hwcrhk_rsa_mod_exp(BIGNUM *r, const BIGNUM *I, RSA *rsa, BN_CTX *ctx)
+ {
+ char tempbuf[1024];
+ HWCryptoHook_ErrMsgBuf rmsg;
+ HWCryptoHook_RSAKeyHandle *hptr;
+ int to_return = 0, ret;
+
+ rmsg.buf = tempbuf;
+ rmsg.size = sizeof(tempbuf);
+
+ if(!hwcrhk_context)
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_RSA_MOD_EXP,HWCRHK_R_NOT_INITIALISED);
+ goto err;
+ }
+
+ /* This provides support for nForce keys. Since that's opaque data
+ all we do is provide a handle to the proper key and let HWCryptoHook
+ take care of the rest. */
+ if ((hptr = (HWCryptoHook_RSAKeyHandle *) RSA_get_ex_data(rsa, hndidx_rsa))
+ != NULL)
+ {
+ HWCryptoHook_MPI m_a, m_r;
+
+ if(!rsa->n)
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_RSA_MOD_EXP,
+ HWCRHK_R_MISSING_KEY_COMPONENTS);
+ goto err;
+ }
+
+ /* Prepare the params */
+ bn_expand2(r, rsa->n->top); /* Check for error !! */
+ BN2MPI(m_a, I);
+ MPI2BN(r, m_r);
+
+ /* Perform the operation */
+ ret = p_hwcrhk_RSA(m_a, *hptr, &m_r, &rmsg);
+
+ /* Convert the response */
+ r->top = m_r.size / sizeof(BN_ULONG);
+ bn_fix_top(r);
+
+ if (ret < 0)
+ {
+ /* FIXME: When this error is returned, HWCryptoHook is
+ telling us that falling back to software computation
+ might be a good thing. */
+ if(ret == HWCRYPTOHOOK_ERROR_FALLBACK)
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_RSA_MOD_EXP,
+ HWCRHK_R_REQUEST_FALLBACK);
+ }
+ else
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_RSA_MOD_EXP,
+ HWCRHK_R_REQUEST_FAILED);
+ }
+ ERR_add_error_data(1,rmsg.buf);
+ goto err;
+ }
+ }
+ else
+ {
+ HWCryptoHook_MPI m_a, m_p, m_q, m_dmp1, m_dmq1, m_iqmp, m_r;
+
+ if(!rsa->p || !rsa->q || !rsa->dmp1 || !rsa->dmq1 || !rsa->iqmp)
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_RSA_MOD_EXP,
+ HWCRHK_R_MISSING_KEY_COMPONENTS);
+ goto err;
+ }
+
+ /* Prepare the params */
+ bn_expand2(r, rsa->n->top); /* Check for error !! */
+ BN2MPI(m_a, I);
+ BN2MPI(m_p, rsa->p);
+ BN2MPI(m_q, rsa->q);
+ BN2MPI(m_dmp1, rsa->dmp1);
+ BN2MPI(m_dmq1, rsa->dmq1);
+ BN2MPI(m_iqmp, rsa->iqmp);
+ MPI2BN(r, m_r);
+
+ /* Perform the operation */
+ ret = p_hwcrhk_ModExpCRT(hwcrhk_context, m_a, m_p, m_q,
+ m_dmp1, m_dmq1, m_iqmp, &m_r, &rmsg);
+
+ /* Convert the response */
+ r->top = m_r.size / sizeof(BN_ULONG);
+ bn_fix_top(r);
+
+ if (ret < 0)
+ {
+ /* FIXME: When this error is returned, HWCryptoHook is
+ telling us that falling back to software computation
+ might be a good thing. */
+ if(ret == HWCRYPTOHOOK_ERROR_FALLBACK)
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_RSA_MOD_EXP,
+ HWCRHK_R_REQUEST_FALLBACK);
+ }
+ else
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_RSA_MOD_EXP,
+ HWCRHK_R_REQUEST_FAILED);
+ }
+ ERR_add_error_data(1,rmsg.buf);
+ goto err;
+ }
+ }
+ /* If we're here, we must be here with some semblance of success :-) */
+ to_return = 1;
+err:
+ return to_return;
+ }
+#endif
+
+#ifndef OPENSSL_NO_RSA
+/* This function is aliased to mod_exp (with the mont stuff dropped). */
+static int hwcrhk_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
+ const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
+ {
+ return hwcrhk_mod_exp(r, a, p, m, ctx);
+ }
+
+static int hwcrhk_rsa_finish(RSA *rsa)
+ {
+ HWCryptoHook_RSAKeyHandle *hptr;
+
+ hptr = RSA_get_ex_data(rsa, hndidx_rsa);
+ if (hptr)
+ {
+ p_hwcrhk_RSAUnloadKey(*hptr, NULL);
+ OPENSSL_free(hptr);
+ RSA_set_ex_data(rsa, hndidx_rsa, NULL);
+ }
+ return 1;
+ }
+
+#endif
+
+#ifndef OPENSSL_NO_DH
+/* This function is aliased to mod_exp (with the dh and mont dropped). */
+static int hwcrhk_mod_exp_dh(const DH *dh, BIGNUM *r,
+ const BIGNUM *a, const BIGNUM *p,
+ const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
+ {
+ return hwcrhk_mod_exp(r, a, p, m, ctx);
+ }
+#endif
+
+/* Random bytes are good */
+static int hwcrhk_rand_bytes(unsigned char *buf, int num)
+ {
+ char tempbuf[1024];
+ HWCryptoHook_ErrMsgBuf rmsg;
+ int to_return = 0; /* assume failure */
+ int ret;
+
+ rmsg.buf = tempbuf;
+ rmsg.size = sizeof(tempbuf);
+
+ if(!hwcrhk_context)
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_RAND_BYTES,HWCRHK_R_NOT_INITIALISED);
+ goto err;
+ }
+
+ ret = p_hwcrhk_RandomBytes(hwcrhk_context, buf, num, &rmsg);
+ if (ret < 0)
+ {
+ /* FIXME: When this error is returned, HWCryptoHook is
+ telling us that falling back to software computation
+ might be a good thing. */
+ if(ret == HWCRYPTOHOOK_ERROR_FALLBACK)
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_RAND_BYTES,
+ HWCRHK_R_REQUEST_FALLBACK);
+ }
+ else
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_RAND_BYTES,
+ HWCRHK_R_REQUEST_FAILED);
+ }
+ ERR_add_error_data(1,rmsg.buf);
+ goto err;
+ }
+ to_return = 1;
+ err:
+ return to_return;
+ }
+
+static int hwcrhk_rand_status(void)
+ {
+ return 1;
+ }
+
+/* Mutex calls: since the HWCryptoHook model closely follows the POSIX model
+ * these just wrap the POSIX functions and add some logging.
+ */
+
+static int hwcrhk_mutex_init(HWCryptoHook_Mutex* mt,
+ HWCryptoHook_CallerContext *cactx)
+ {
+ mt->lockid = CRYPTO_get_new_dynlockid();
+ if (mt->lockid == 0)
+ return 1; /* failure */
+ return 0; /* success */
+ }
+
+static int hwcrhk_mutex_lock(HWCryptoHook_Mutex *mt)
+ {
+ CRYPTO_w_lock(mt->lockid);
+ return 0;
+ }
+
+static void hwcrhk_mutex_unlock(HWCryptoHook_Mutex * mt)
+ {
+ CRYPTO_w_unlock(mt->lockid);
+ }
+
+static void hwcrhk_mutex_destroy(HWCryptoHook_Mutex *mt)
+ {
+ CRYPTO_destroy_dynlockid(mt->lockid);
+ }
+
+static int hwcrhk_get_pass(const char *prompt_info,
+ int *len_io, char *buf,
+ HWCryptoHook_PassphraseContext *ppctx,
+ HWCryptoHook_CallerContext *cactx)
+ {
+ pem_password_cb *callback = NULL;
+ void *callback_data = NULL;
+ UI_METHOD *ui_method = NULL;
+ /* Despite what the documentation says prompt_info can be
+ * an empty string.
+ */
+ if (prompt_info && !*prompt_info)
+ prompt_info = NULL;
+
+ if (cactx)
+ {
+ if (cactx->ui_method)
+ ui_method = cactx->ui_method;
+ if (cactx->password_callback)
+ callback = cactx->password_callback;
+ if (cactx->callback_data)
+ callback_data = cactx->callback_data;
+ }
+ if (ppctx)
+ {
+ if (ppctx->ui_method)
+ {
+ ui_method = ppctx->ui_method;
+ callback = NULL;
+ }
+ if (ppctx->callback_data)
+ callback_data = ppctx->callback_data;
+ }
+ if (callback == NULL && ui_method == NULL)
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_GET_PASS,HWCRHK_R_NO_CALLBACK);
+ return -1;
+ }
+
+ if (ui_method)
+ {
+ UI *ui = UI_new_method(ui_method);
+ if (ui)
+ {
+ int ok;
+ char *prompt = UI_construct_prompt(ui,
+ "pass phrase", prompt_info);
+
+ ok = UI_add_input_string(ui,prompt,
+ UI_INPUT_FLAG_DEFAULT_PWD,
+ buf,0,(*len_io) - 1);
+ UI_add_user_data(ui, callback_data);
+ UI_ctrl(ui, UI_CTRL_PRINT_ERRORS, 1, 0, 0);
+
+ if (ok >= 0)
+ do
+ {
+ ok=UI_process(ui);
+ }
+ while (ok < 0 && UI_ctrl(ui, UI_CTRL_IS_REDOABLE, 0, 0, 0));
+
+ if (ok >= 0)
+ *len_io = strlen(buf);
+
+ UI_free(ui);
+ OPENSSL_free(prompt);
+ }
+ }
+ else
+ {
+ *len_io = callback(buf, *len_io, 0, callback_data);
+ }
+ if(!*len_io)
+ return -1;
+ return 0;
+ }
+
+static int hwcrhk_insert_card(const char *prompt_info,
+ const char *wrong_info,
+ HWCryptoHook_PassphraseContext *ppctx,
+ HWCryptoHook_CallerContext *cactx)
+ {
+ int ok = -1;
+ UI *ui;
+ void *callback_data = NULL;
+ UI_METHOD *ui_method = NULL;
+
+ if (cactx)
+ {
+ if (cactx->ui_method)
+ ui_method = cactx->ui_method;
+ if (cactx->callback_data)
+ callback_data = cactx->callback_data;
+ }
+ if (ppctx)
+ {
+ if (ppctx->ui_method)
+ ui_method = ppctx->ui_method;
+ if (ppctx->callback_data)
+ callback_data = ppctx->callback_data;
+ }
+ if (ui_method == NULL)
+ {
+ HWCRHKerr(HWCRHK_F_HWCRHK_INSERT_CARD,
+ HWCRHK_R_NO_CALLBACK);
+ return -1;
+ }
+
+ ui = UI_new_method(ui_method);
+
+ if (ui)
+ {
+ char answer;
+ char buf[BUFSIZ];
+ /* Despite what the documentation says wrong_info can be
+ * an empty string.
+ */
+ if (wrong_info && *wrong_info)
+ BIO_snprintf(buf, sizeof(buf)-1,
+ "Current card: \"%s\"\n", wrong_info);
+ else
+ buf[0] = 0;
+ ok = UI_dup_info_string(ui, buf);
+ if (ok >= 0 && prompt_info)
+ {
+ BIO_snprintf(buf, sizeof(buf)-1,
+ "Insert card \"%s\"", prompt_info);
+ ok = UI_dup_input_boolean(ui, buf,
+ "\n then hit <enter> or C<enter> to cancel\n",
+ "\r\n", "Cc", UI_INPUT_FLAG_ECHO, &answer);
+ }
+ UI_add_user_data(ui, callback_data);
+
+ if (ok >= 0)
+ ok = UI_process(ui);
+ UI_free(ui);
+
+ if (ok == -2 || (ok >= 0 && answer == 'C'))
+ ok = 1;
+ else if (ok < 0)
+ ok = -1;
+ else
+ ok = 0;
+ }
+ return ok;
+ }
+
+static void hwcrhk_log_message(void *logstr, const char *message)
+ {
+ BIO *lstream = NULL;
+
+ CRYPTO_w_lock(CRYPTO_LOCK_BIO);
+ if (logstr)
+ lstream=*(BIO **)logstr;
+ if (lstream)
+ {
+ BIO_printf(lstream, "%s\n", message);
+ }
+ CRYPTO_w_unlock(CRYPTO_LOCK_BIO);
+ }
+
+/* This stuff is needed if this ENGINE is being compiled into a self-contained
+ * shared-library. */
+#ifndef OPENSSL_NO_DYNAMIC_ENGINE
+static int bind_fn(ENGINE *e, const char *id)
+ {
+ if(id && (strcmp(id, engine_hwcrhk_id) != 0) &&
+ (strcmp(id, engine_hwcrhk_id_alt) != 0))
+ return 0;
+ if(!bind_helper(e))
+ return 0;
+ return 1;
+ }
+IMPLEMENT_DYNAMIC_CHECK_FN()
+IMPLEMENT_DYNAMIC_BIND_FN(bind_fn)
+#endif /* OPENSSL_NO_DYNAMIC_ENGINE */
+
+#endif /* !OPENSSL_NO_HW_CHIL */
+#endif /* !OPENSSL_NO_HW */
projects / cassiopeia.git / blobdiff