1229 lines
36 KiB
C
1229 lines
36 KiB
C
/*
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* Copyright 2009 Henri Verbeet for CodeWeavers
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*
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*/
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#include "config.h"
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#include "wine/port.h"
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#include <stdarg.h>
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#ifdef HAVE_COMMONCRYPTO_COMMONCRYPTOR_H
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#include <AvailabilityMacros.h>
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#include <CommonCrypto/CommonCryptor.h>
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#elif defined(SONAME_LIBGNUTLS)
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#include <gnutls/gnutls.h>
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#include <gnutls/crypto.h>
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#endif
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#include "ntstatus.h"
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#define WIN32_NO_STATUS
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#include "windef.h"
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#include "winbase.h"
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#include "ntsecapi.h"
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#include "bcrypt.h"
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#include "bcrypt_internal.h"
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#include "wine/debug.h"
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#include "wine/library.h"
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#include "wine/unicode.h"
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WINE_DEFAULT_DEBUG_CHANNEL(bcrypt);
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static HINSTANCE instance;
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#if defined(HAVE_GNUTLS_CIPHER_INIT) && !defined(HAVE_COMMONCRYPTO_COMMONCRYPTOR_H)
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WINE_DECLARE_DEBUG_CHANNEL(winediag);
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static void *libgnutls_handle;
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#define MAKE_FUNCPTR(f) static typeof(f) * p##f
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MAKE_FUNCPTR(gnutls_cipher_decrypt2);
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MAKE_FUNCPTR(gnutls_cipher_deinit);
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MAKE_FUNCPTR(gnutls_cipher_encrypt2);
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MAKE_FUNCPTR(gnutls_cipher_init);
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MAKE_FUNCPTR(gnutls_global_deinit);
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MAKE_FUNCPTR(gnutls_global_init);
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MAKE_FUNCPTR(gnutls_global_set_log_function);
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MAKE_FUNCPTR(gnutls_global_set_log_level);
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MAKE_FUNCPTR(gnutls_perror);
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#undef MAKE_FUNCPTR
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static void gnutls_log( int level, const char *msg )
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{
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TRACE( "<%d> %s", level, msg );
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}
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static BOOL gnutls_initialize(void)
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{
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int ret;
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if (!(libgnutls_handle = wine_dlopen( SONAME_LIBGNUTLS, RTLD_NOW, NULL, 0 )))
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{
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ERR_(winediag)( "failed to load libgnutls, no support for encryption\n" );
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return FALSE;
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}
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#define LOAD_FUNCPTR(f) \
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if (!(p##f = wine_dlsym( libgnutls_handle, #f, NULL, 0 ))) \
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{ \
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ERR( "failed to load %s\n", #f ); \
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goto fail; \
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}
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LOAD_FUNCPTR(gnutls_cipher_decrypt2)
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LOAD_FUNCPTR(gnutls_cipher_deinit)
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LOAD_FUNCPTR(gnutls_cipher_encrypt2)
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LOAD_FUNCPTR(gnutls_cipher_init)
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LOAD_FUNCPTR(gnutls_global_deinit)
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LOAD_FUNCPTR(gnutls_global_init)
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LOAD_FUNCPTR(gnutls_global_set_log_function)
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LOAD_FUNCPTR(gnutls_global_set_log_level)
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LOAD_FUNCPTR(gnutls_perror)
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#undef LOAD_FUNCPTR
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if ((ret = pgnutls_global_init()) != GNUTLS_E_SUCCESS)
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{
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pgnutls_perror( ret );
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goto fail;
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}
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if (TRACE_ON( bcrypt ))
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{
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pgnutls_global_set_log_level( 4 );
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pgnutls_global_set_log_function( gnutls_log );
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}
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return TRUE;
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fail:
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wine_dlclose( libgnutls_handle, NULL, 0 );
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libgnutls_handle = NULL;
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return FALSE;
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}
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static void gnutls_uninitialize(void)
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{
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pgnutls_global_deinit();
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wine_dlclose( libgnutls_handle, NULL, 0 );
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libgnutls_handle = NULL;
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}
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#endif /* HAVE_GNUTLS_CIPHER_INIT && !HAVE_COMMONCRYPTO_COMMONCRYPTOR_H */
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NTSTATUS WINAPI BCryptAddContextFunction(ULONG table, LPCWSTR context, ULONG iface, LPCWSTR function, ULONG pos)
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{
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FIXME("%08x, %s, %08x, %s, %u: stub\n", table, debugstr_w(context), iface, debugstr_w(function), pos);
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return STATUS_SUCCESS;
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}
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NTSTATUS WINAPI BCryptAddContextFunctionProvider(ULONG table, LPCWSTR context, ULONG iface, LPCWSTR function, LPCWSTR provider, ULONG pos)
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{
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FIXME("%08x, %s, %08x, %s, %s, %u: stub\n", table, debugstr_w(context), iface, debugstr_w(function), debugstr_w(provider), pos);
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return STATUS_SUCCESS;
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}
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NTSTATUS WINAPI BCryptRemoveContextFunction(ULONG table, LPCWSTR context, ULONG iface, LPCWSTR function)
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{
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FIXME("%08x, %s, %08x, %s: stub\n", table, debugstr_w(context), iface, debugstr_w(function));
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return STATUS_NOT_IMPLEMENTED;
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}
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NTSTATUS WINAPI BCryptRemoveContextFunctionProvider(ULONG table, LPCWSTR context, ULONG iface, LPCWSTR function, LPCWSTR provider)
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{
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FIXME("%08x, %s, %08x, %s, %s: stub\n", table, debugstr_w(context), iface, debugstr_w(function), debugstr_w(provider));
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return STATUS_NOT_IMPLEMENTED;
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}
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NTSTATUS WINAPI BCryptRegisterProvider(LPCWSTR provider, ULONG flags, PCRYPT_PROVIDER_REG reg)
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{
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FIXME("%s, %08x, %p: stub\n", debugstr_w(provider), flags, reg);
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return STATUS_SUCCESS;
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}
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NTSTATUS WINAPI BCryptUnregisterProvider(LPCWSTR provider)
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{
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FIXME("%s: stub\n", debugstr_w(provider));
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return STATUS_NOT_IMPLEMENTED;
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}
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NTSTATUS WINAPI BCryptEnumAlgorithms(ULONG dwAlgOperations, ULONG *pAlgCount,
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BCRYPT_ALGORITHM_IDENTIFIER **ppAlgList, ULONG dwFlags)
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{
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FIXME("%08x, %p, %p, %08x - stub\n", dwAlgOperations, pAlgCount, ppAlgList, dwFlags);
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*ppAlgList=NULL;
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*pAlgCount=0;
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return STATUS_NOT_IMPLEMENTED;
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}
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#define MAGIC_ALG (('A' << 24) | ('L' << 16) | ('G' << 8) | '0')
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#define MAGIC_HASH (('H' << 24) | ('A' << 16) | ('S' << 8) | 'H')
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#define MAGIC_KEY (('K' << 24) | ('E' << 16) | ('Y' << 8) | '0')
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struct object
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{
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ULONG magic;
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};
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enum alg_id
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{
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ALG_ID_AES,
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ALG_ID_MD2,
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ALG_ID_MD4,
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ALG_ID_MD5,
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ALG_ID_RNG,
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ALG_ID_SHA1,
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ALG_ID_SHA256,
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ALG_ID_SHA384,
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ALG_ID_SHA512
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};
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#define MAX_HASH_OUTPUT_BYTES 64
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#define MAX_HASH_BLOCK_BITS 1024
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static const struct {
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ULONG object_length;
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ULONG hash_length;
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ULONG block_bits;
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const WCHAR *alg_name;
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} alg_props[] = {
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/* ALG_ID_AES */ { 654, 0, 0, BCRYPT_AES_ALGORITHM },
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/* ALG_ID_MD2 */ { 270, 16, 128, BCRYPT_MD2_ALGORITHM },
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/* ALG_ID_MD4 */ { 270, 16, 512, BCRYPT_MD4_ALGORITHM },
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/* ALG_ID_MD5 */ { 274, 16, 512, BCRYPT_MD5_ALGORITHM },
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/* ALG_ID_RNG */ { 0, 0, 0, BCRYPT_RNG_ALGORITHM },
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/* ALG_ID_SHA1 */ { 278, 20, 512, BCRYPT_SHA1_ALGORITHM },
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/* ALG_ID_SHA256 */ { 286, 32, 512, BCRYPT_SHA256_ALGORITHM },
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/* ALG_ID_SHA384 */ { 382, 48, 1024, BCRYPT_SHA384_ALGORITHM },
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/* ALG_ID_SHA512 */ { 382, 64, 1024, BCRYPT_SHA512_ALGORITHM }
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};
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struct algorithm
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{
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struct object hdr;
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enum alg_id id;
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BOOL hmac;
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};
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NTSTATUS WINAPI BCryptGenRandom(BCRYPT_ALG_HANDLE handle, UCHAR *buffer, ULONG count, ULONG flags)
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{
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const DWORD supported_flags = BCRYPT_USE_SYSTEM_PREFERRED_RNG;
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struct algorithm *algorithm = handle;
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TRACE("%p, %p, %u, %08x - semi-stub\n", handle, buffer, count, flags);
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if (!algorithm)
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{
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/* It's valid to call without an algorithm if BCRYPT_USE_SYSTEM_PREFERRED_RNG
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* is set. In this case the preferred system RNG is used.
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*/
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if (!(flags & BCRYPT_USE_SYSTEM_PREFERRED_RNG))
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return STATUS_INVALID_HANDLE;
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}
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else if (algorithm->hdr.magic != MAGIC_ALG || algorithm->id != ALG_ID_RNG)
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return STATUS_INVALID_HANDLE;
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if (!buffer)
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return STATUS_INVALID_PARAMETER;
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if (flags & ~supported_flags)
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FIXME("unsupported flags %08x\n", flags & ~supported_flags);
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if (algorithm)
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FIXME("ignoring selected algorithm\n");
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/* When zero bytes are requested the function returns success too. */
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if (!count)
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return STATUS_SUCCESS;
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if (algorithm || (flags & BCRYPT_USE_SYSTEM_PREFERRED_RNG))
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{
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if (RtlGenRandom(buffer, count))
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return STATUS_SUCCESS;
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}
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FIXME("called with unsupported parameters, returning error\n");
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return STATUS_NOT_IMPLEMENTED;
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}
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NTSTATUS WINAPI BCryptOpenAlgorithmProvider( BCRYPT_ALG_HANDLE *handle, LPCWSTR id, LPCWSTR implementation, DWORD flags )
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{
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const DWORD supported_flags = BCRYPT_ALG_HANDLE_HMAC_FLAG;
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struct algorithm *alg;
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enum alg_id alg_id;
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TRACE( "%p, %s, %s, %08x\n", handle, wine_dbgstr_w(id), wine_dbgstr_w(implementation), flags );
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if (!handle || !id) return STATUS_INVALID_PARAMETER;
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if (flags & ~supported_flags)
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{
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FIXME( "unsupported flags %08x\n", flags & ~supported_flags);
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return STATUS_NOT_IMPLEMENTED;
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}
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if (!strcmpW( id, BCRYPT_AES_ALGORITHM )) alg_id = ALG_ID_AES;
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else if (!strcmpW( id, BCRYPT_MD2_ALGORITHM )) alg_id = ALG_ID_MD2;
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else if (!strcmpW( id, BCRYPT_MD4_ALGORITHM )) alg_id = ALG_ID_MD4;
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else if (!strcmpW( id, BCRYPT_MD5_ALGORITHM )) alg_id = ALG_ID_MD5;
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else if (!strcmpW( id, BCRYPT_RNG_ALGORITHM )) alg_id = ALG_ID_RNG;
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else if (!strcmpW( id, BCRYPT_SHA1_ALGORITHM )) alg_id = ALG_ID_SHA1;
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else if (!strcmpW( id, BCRYPT_SHA256_ALGORITHM )) alg_id = ALG_ID_SHA256;
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else if (!strcmpW( id, BCRYPT_SHA384_ALGORITHM )) alg_id = ALG_ID_SHA384;
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else if (!strcmpW( id, BCRYPT_SHA512_ALGORITHM )) alg_id = ALG_ID_SHA512;
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else
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{
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FIXME( "algorithm %s not supported\n", debugstr_w(id) );
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return STATUS_NOT_IMPLEMENTED;
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}
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if (implementation && strcmpW( implementation, MS_PRIMITIVE_PROVIDER ))
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{
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FIXME( "implementation %s not supported\n", debugstr_w(implementation) );
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return STATUS_NOT_IMPLEMENTED;
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}
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if (!(alg = HeapAlloc( GetProcessHeap(), 0, sizeof(*alg) ))) return STATUS_NO_MEMORY;
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alg->hdr.magic = MAGIC_ALG;
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alg->id = alg_id;
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alg->hmac = flags & BCRYPT_ALG_HANDLE_HMAC_FLAG;
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*handle = alg;
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return STATUS_SUCCESS;
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}
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NTSTATUS WINAPI BCryptCloseAlgorithmProvider( BCRYPT_ALG_HANDLE handle, DWORD flags )
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{
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struct algorithm *alg = handle;
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TRACE( "%p, %08x\n", handle, flags );
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if (!alg || alg->hdr.magic != MAGIC_ALG) return STATUS_INVALID_HANDLE;
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HeapFree( GetProcessHeap(), 0, alg );
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return STATUS_SUCCESS;
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}
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NTSTATUS WINAPI BCryptGetFipsAlgorithmMode(BOOLEAN *enabled)
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{
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FIXME("%p - semi-stub\n", enabled);
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if (!enabled)
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return STATUS_INVALID_PARAMETER;
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*enabled = FALSE;
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return STATUS_SUCCESS;
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}
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struct hash_impl
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{
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union
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{
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MD2_CTX md2;
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MD4_CTX md4;
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MD5_CTX md5;
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SHA_CTX sha1;
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SHA256_CTX sha256;
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SHA512_CTX sha512;
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} u;
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};
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static NTSTATUS hash_init( struct hash_impl *hash, enum alg_id alg_id )
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{
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switch (alg_id)
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{
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case ALG_ID_MD2:
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md2_init( &hash->u.md2 );
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break;
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case ALG_ID_MD4:
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MD4Init( &hash->u.md4 );
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break;
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case ALG_ID_MD5:
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MD5Init( &hash->u.md5 );
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break;
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case ALG_ID_SHA1:
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A_SHAInit( &hash->u.sha1 );
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break;
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case ALG_ID_SHA256:
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sha256_init( &hash->u.sha256 );
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break;
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case ALG_ID_SHA384:
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sha384_init( &hash->u.sha512 );
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break;
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case ALG_ID_SHA512:
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sha512_init( &hash->u.sha512 );
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break;
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default:
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ERR( "unhandled id %u\n", alg_id );
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return STATUS_NOT_IMPLEMENTED;
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}
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return STATUS_SUCCESS;
|
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}
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static NTSTATUS hash_update( struct hash_impl *hash, enum alg_id alg_id,
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UCHAR *input, ULONG size )
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{
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switch (alg_id)
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{
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case ALG_ID_MD2:
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md2_update( &hash->u.md2, input, size );
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break;
|
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|
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case ALG_ID_MD4:
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MD4Update( &hash->u.md4, input, size );
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break;
|
|
|
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case ALG_ID_MD5:
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MD5Update( &hash->u.md5, input, size );
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break;
|
|
|
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case ALG_ID_SHA1:
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A_SHAUpdate( &hash->u.sha1, input, size );
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break;
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case ALG_ID_SHA256:
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sha256_update( &hash->u.sha256, input, size );
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break;
|
|
|
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case ALG_ID_SHA384:
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sha384_update( &hash->u.sha512, input, size );
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break;
|
|
|
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case ALG_ID_SHA512:
|
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sha512_update( &hash->u.sha512, input, size );
|
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break;
|
|
|
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default:
|
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ERR( "unhandled id %u\n", alg_id );
|
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return STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
static NTSTATUS hash_finish( struct hash_impl *hash, enum alg_id alg_id,
|
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UCHAR *output, ULONG size )
|
|
{
|
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switch (alg_id)
|
|
{
|
|
case ALG_ID_MD2:
|
|
md2_finalize( &hash->u.md2, output );
|
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break;
|
|
|
|
case ALG_ID_MD4:
|
|
MD4Final( &hash->u.md4 );
|
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memcpy( output, hash->u.md4.digest, 16 );
|
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break;
|
|
|
|
case ALG_ID_MD5:
|
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MD5Final( &hash->u.md5 );
|
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memcpy( output, hash->u.md5.digest, 16 );
|
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break;
|
|
|
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case ALG_ID_SHA1:
|
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A_SHAFinal( &hash->u.sha1, (ULONG *)output );
|
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break;
|
|
|
|
case ALG_ID_SHA256:
|
|
sha256_finalize( &hash->u.sha256, output );
|
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break;
|
|
|
|
case ALG_ID_SHA384:
|
|
sha384_finalize( &hash->u.sha512, output );
|
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break;
|
|
|
|
case ALG_ID_SHA512:
|
|
sha512_finalize( &hash->u.sha512, output );
|
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break;
|
|
|
|
default:
|
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ERR( "unhandled id %u\n", alg_id );
|
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return STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
struct hash
|
|
{
|
|
struct object hdr;
|
|
enum alg_id alg_id;
|
|
BOOL hmac;
|
|
struct hash_impl outer;
|
|
struct hash_impl inner;
|
|
};
|
|
|
|
#define BLOCK_LENGTH_AES 16
|
|
|
|
static NTSTATUS generic_alg_property( enum alg_id id, const WCHAR *prop, UCHAR *buf, ULONG size, ULONG *ret_size )
|
|
{
|
|
if (!strcmpW( prop, BCRYPT_OBJECT_LENGTH ))
|
|
{
|
|
if (!alg_props[id].object_length)
|
|
return STATUS_NOT_SUPPORTED;
|
|
*ret_size = sizeof(ULONG);
|
|
if (size < sizeof(ULONG))
|
|
return STATUS_BUFFER_TOO_SMALL;
|
|
if (buf)
|
|
*(ULONG *)buf = alg_props[id].object_length;
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
if (!strcmpW( prop, BCRYPT_HASH_LENGTH ))
|
|
{
|
|
if (!alg_props[id].hash_length)
|
|
return STATUS_NOT_SUPPORTED;
|
|
*ret_size = sizeof(ULONG);
|
|
if (size < sizeof(ULONG))
|
|
return STATUS_BUFFER_TOO_SMALL;
|
|
if(buf)
|
|
*(ULONG*)buf = alg_props[id].hash_length;
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
if (!strcmpW( prop, BCRYPT_ALGORITHM_NAME ))
|
|
{
|
|
*ret_size = (strlenW(alg_props[id].alg_name)+1)*sizeof(WCHAR);
|
|
if (size < *ret_size)
|
|
return STATUS_BUFFER_TOO_SMALL;
|
|
if(buf)
|
|
memcpy(buf, alg_props[id].alg_name, *ret_size);
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
static NTSTATUS get_alg_property( enum alg_id id, const WCHAR *prop, UCHAR *buf, ULONG size, ULONG *ret_size )
|
|
{
|
|
NTSTATUS status;
|
|
|
|
status = generic_alg_property( id, prop, buf, size, ret_size );
|
|
if (status != STATUS_NOT_IMPLEMENTED)
|
|
return status;
|
|
|
|
switch (id)
|
|
{
|
|
case ALG_ID_AES:
|
|
if (!strcmpW( prop, BCRYPT_BLOCK_LENGTH ))
|
|
{
|
|
*ret_size = sizeof(ULONG);
|
|
if (size < sizeof(ULONG))
|
|
return STATUS_BUFFER_TOO_SMALL;
|
|
if (buf)
|
|
*(ULONG *)buf = BLOCK_LENGTH_AES;
|
|
return STATUS_SUCCESS;
|
|
}
|
|
if (!strcmpW( prop, BCRYPT_CHAINING_MODE ))
|
|
{
|
|
if (size >= sizeof(BCRYPT_CHAIN_MODE_CBC))
|
|
{
|
|
memcpy(buf, BCRYPT_CHAIN_MODE_CBC, sizeof(BCRYPT_CHAIN_MODE_CBC));
|
|
*ret_size = sizeof(BCRYPT_CHAIN_MODE_CBC) * sizeof(WCHAR);
|
|
return STATUS_SUCCESS;
|
|
}
|
|
else
|
|
{
|
|
*ret_size = sizeof(BCRYPT_CHAIN_MODE_CBC) * sizeof(WCHAR);
|
|
return STATUS_BUFFER_TOO_SMALL;
|
|
}
|
|
}
|
|
if (!strcmpW( prop, BCRYPT_KEY_LENGTHS ))
|
|
{
|
|
BCRYPT_KEY_LENGTHS_STRUCT *key_lengths = (void *)buf;
|
|
*ret_size = sizeof(*key_lengths);
|
|
if (key_lengths && size < *ret_size) return STATUS_BUFFER_TOO_SMALL;
|
|
if (key_lengths)
|
|
{
|
|
key_lengths->dwMinLength = 128;
|
|
key_lengths->dwMaxLength = 256;
|
|
key_lengths->dwIncrement = 64;
|
|
}
|
|
return STATUS_SUCCESS;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
FIXME( "unsupported property %s\n", debugstr_w(prop) );
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
static NTSTATUS get_hash_property( enum alg_id id, const WCHAR *prop, UCHAR *buf, ULONG size, ULONG *ret_size )
|
|
{
|
|
NTSTATUS status;
|
|
|
|
status = generic_alg_property( id, prop, buf, size, ret_size );
|
|
if (status == STATUS_NOT_IMPLEMENTED)
|
|
FIXME( "unsupported property %s\n", debugstr_w(prop) );
|
|
return status;
|
|
}
|
|
|
|
NTSTATUS WINAPI BCryptGetProperty( BCRYPT_HANDLE handle, LPCWSTR prop, UCHAR *buffer, ULONG count, ULONG *res, ULONG flags )
|
|
{
|
|
struct object *object = handle;
|
|
|
|
TRACE( "%p, %s, %p, %u, %p, %08x\n", handle, wine_dbgstr_w(prop), buffer, count, res, flags );
|
|
|
|
if (!object) return STATUS_INVALID_HANDLE;
|
|
if (!prop || !res) return STATUS_INVALID_PARAMETER;
|
|
|
|
switch (object->magic)
|
|
{
|
|
case MAGIC_ALG:
|
|
{
|
|
const struct algorithm *alg = (const struct algorithm *)object;
|
|
return get_alg_property( alg->id, prop, buffer, count, res );
|
|
}
|
|
case MAGIC_HASH:
|
|
{
|
|
const struct hash *hash = (const struct hash *)object;
|
|
return get_hash_property( hash->alg_id, prop, buffer, count, res );
|
|
}
|
|
default:
|
|
WARN( "unknown magic %08x\n", object->magic );
|
|
return STATUS_INVALID_HANDLE;
|
|
}
|
|
}
|
|
|
|
NTSTATUS WINAPI BCryptSetProperty( BCRYPT_HANDLE handle, const WCHAR *prop, UCHAR *value, ULONG size, ULONG flags )
|
|
{
|
|
FIXME( "%p, %s, %p, %u, %08x\n", handle, debugstr_w(prop), value, size, flags );
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NTSTATUS WINAPI BCryptCreateHash( BCRYPT_ALG_HANDLE algorithm, BCRYPT_HASH_HANDLE *handle, UCHAR *object, ULONG objectlen,
|
|
UCHAR *secret, ULONG secretlen, ULONG flags )
|
|
{
|
|
struct algorithm *alg = algorithm;
|
|
UCHAR buffer[MAX_HASH_BLOCK_BITS / 8] = {0};
|
|
struct hash *hash;
|
|
int block_bytes;
|
|
NTSTATUS status;
|
|
int i;
|
|
|
|
TRACE( "%p, %p, %p, %u, %p, %u, %08x - stub\n", algorithm, handle, object, objectlen,
|
|
secret, secretlen, flags );
|
|
if (flags)
|
|
{
|
|
FIXME( "unimplemented flags %08x\n", flags );
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
if (!alg || alg->hdr.magic != MAGIC_ALG) return STATUS_INVALID_HANDLE;
|
|
if (object) FIXME( "ignoring object buffer\n" );
|
|
|
|
if (!(hash = HeapAlloc( GetProcessHeap(), 0, sizeof(*hash) ))) return STATUS_NO_MEMORY;
|
|
hash->hdr.magic = MAGIC_HASH;
|
|
hash->alg_id = alg->id;
|
|
hash->hmac = alg->hmac;
|
|
|
|
/* initialize hash */
|
|
if ((status = hash_init( &hash->inner, hash->alg_id ))) goto end;
|
|
if (!hash->hmac) goto end;
|
|
|
|
/* initialize hmac */
|
|
if ((status = hash_init( &hash->outer, hash->alg_id ))) goto end;
|
|
block_bytes = alg_props[hash->alg_id].block_bits / 8;
|
|
if (secretlen > block_bytes)
|
|
{
|
|
struct hash_impl temp;
|
|
if ((status = hash_init( &temp, hash->alg_id ))) goto end;
|
|
if ((status = hash_update( &temp, hash->alg_id, secret, secretlen ))) goto end;
|
|
if ((status = hash_finish( &temp, hash->alg_id, buffer,
|
|
alg_props[hash->alg_id].hash_length ))) goto end;
|
|
}
|
|
else
|
|
{
|
|
memcpy( buffer, secret, secretlen );
|
|
}
|
|
for (i = 0; i < block_bytes; i++) buffer[i] ^= 0x5c;
|
|
if ((status = hash_update( &hash->outer, hash->alg_id, buffer, block_bytes ))) goto end;
|
|
for (i = 0; i < block_bytes; i++) buffer[i] ^= (0x5c ^ 0x36);
|
|
status = hash_update( &hash->inner, hash->alg_id, buffer, block_bytes );
|
|
|
|
end:
|
|
if (status != STATUS_SUCCESS)
|
|
{
|
|
HeapFree( GetProcessHeap(), 0, hash );
|
|
return status;
|
|
}
|
|
|
|
*handle = hash;
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
NTSTATUS WINAPI BCryptDuplicateHash( BCRYPT_HASH_HANDLE handle, BCRYPT_HASH_HANDLE *handle_copy,
|
|
UCHAR *object, ULONG objectlen, ULONG flags )
|
|
{
|
|
struct hash *hash_orig = handle;
|
|
struct hash *hash_copy;
|
|
|
|
TRACE( "%p, %p, %p, %u, %u\n", handle, handle_copy, object, objectlen, flags );
|
|
|
|
if (!hash_orig || hash_orig->hdr.magic != MAGIC_HASH) return STATUS_INVALID_HANDLE;
|
|
if (!handle_copy) return STATUS_INVALID_PARAMETER;
|
|
if (object) FIXME( "ignoring object buffer\n" );
|
|
|
|
if (!(hash_copy = HeapAlloc( GetProcessHeap(), 0, sizeof(*hash_copy) )))
|
|
return STATUS_NO_MEMORY;
|
|
|
|
memcpy( hash_copy, hash_orig, sizeof(*hash_orig) );
|
|
|
|
*handle_copy = hash_copy;
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
NTSTATUS WINAPI BCryptDestroyHash( BCRYPT_HASH_HANDLE handle )
|
|
{
|
|
struct hash *hash = handle;
|
|
|
|
TRACE( "%p\n", handle );
|
|
|
|
if (!hash || hash->hdr.magic != MAGIC_HASH) return STATUS_INVALID_HANDLE;
|
|
HeapFree( GetProcessHeap(), 0, hash );
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
NTSTATUS WINAPI BCryptHashData( BCRYPT_HASH_HANDLE handle, UCHAR *input, ULONG size, ULONG flags )
|
|
{
|
|
struct hash *hash = handle;
|
|
|
|
TRACE( "%p, %p, %u, %08x\n", handle, input, size, flags );
|
|
|
|
if (!hash || hash->hdr.magic != MAGIC_HASH) return STATUS_INVALID_HANDLE;
|
|
if (!input) return STATUS_SUCCESS;
|
|
|
|
return hash_update( &hash->inner, hash->alg_id, input, size );
|
|
}
|
|
|
|
NTSTATUS WINAPI BCryptFinishHash( BCRYPT_HASH_HANDLE handle, UCHAR *output, ULONG size, ULONG flags )
|
|
{
|
|
UCHAR buffer[MAX_HASH_OUTPUT_BYTES];
|
|
struct hash *hash = handle;
|
|
NTSTATUS status;
|
|
int hash_length;
|
|
|
|
TRACE( "%p, %p, %u, %08x\n", handle, output, size, flags );
|
|
|
|
if (!hash || hash->hdr.magic != MAGIC_HASH) return STATUS_INVALID_HANDLE;
|
|
if (!output) return STATUS_INVALID_PARAMETER;
|
|
|
|
if (!hash->hmac)
|
|
return hash_finish( &hash->inner, hash->alg_id, output, size );
|
|
|
|
hash_length = alg_props[hash->alg_id].hash_length;
|
|
if ((status = hash_finish( &hash->inner, hash->alg_id, buffer, hash_length ))) return status;
|
|
if ((status = hash_update( &hash->outer, hash->alg_id, buffer, hash_length ))) return status;
|
|
return hash_finish( &hash->outer, hash->alg_id, output, size );
|
|
}
|
|
|
|
NTSTATUS WINAPI BCryptHash( BCRYPT_ALG_HANDLE algorithm, UCHAR *secret, ULONG secretlen,
|
|
UCHAR *input, ULONG inputlen, UCHAR *output, ULONG outputlen )
|
|
{
|
|
NTSTATUS status;
|
|
BCRYPT_HASH_HANDLE handle;
|
|
|
|
TRACE( "%p, %p, %u, %p, %u, %p, %u\n", algorithm, secret, secretlen,
|
|
input, inputlen, output, outputlen );
|
|
|
|
status = BCryptCreateHash( algorithm, &handle, NULL, 0, secret, secretlen, 0);
|
|
if (status != STATUS_SUCCESS)
|
|
{
|
|
return status;
|
|
}
|
|
|
|
status = BCryptHashData( handle, input, inputlen, 0 );
|
|
if (status != STATUS_SUCCESS)
|
|
{
|
|
BCryptDestroyHash( handle );
|
|
return status;
|
|
}
|
|
|
|
status = BCryptFinishHash( handle, output, outputlen, 0 );
|
|
if (status != STATUS_SUCCESS)
|
|
{
|
|
BCryptDestroyHash( handle );
|
|
return status;
|
|
}
|
|
|
|
return BCryptDestroyHash( handle );
|
|
}
|
|
|
|
#if defined(HAVE_GNUTLS_CIPHER_INIT) || defined(HAVE_COMMONCRYPTO_COMMONCRYPTOR_H) && MAC_OS_X_VERSION_MAX_ALLOWED >= 1070
|
|
static ULONG get_block_size( enum alg_id alg )
|
|
{
|
|
ULONG ret = 0, size = sizeof(ret);
|
|
get_alg_property( alg, BCRYPT_BLOCK_LENGTH, (UCHAR *)&ret, sizeof(ret), &size );
|
|
return ret;
|
|
}
|
|
#endif
|
|
|
|
#if defined(HAVE_GNUTLS_CIPHER_INIT) && !defined(HAVE_COMMONCRYPTO_COMMONCRYPTOR_H)
|
|
struct key
|
|
{
|
|
struct object hdr;
|
|
enum alg_id alg_id;
|
|
ULONG block_size;
|
|
gnutls_cipher_hd_t handle;
|
|
UCHAR *secret;
|
|
ULONG secret_len;
|
|
};
|
|
|
|
static NTSTATUS key_init( struct key *key, enum alg_id id, const UCHAR *secret, ULONG secret_len )
|
|
{
|
|
UCHAR *buffer;
|
|
|
|
if (!libgnutls_handle) return STATUS_INTERNAL_ERROR;
|
|
|
|
switch (id)
|
|
{
|
|
case ALG_ID_AES:
|
|
break;
|
|
|
|
default:
|
|
FIXME( "algorithm %u not supported\n", id );
|
|
return STATUS_NOT_SUPPORTED;
|
|
}
|
|
|
|
if (!(key->block_size = get_block_size( id ))) return STATUS_INVALID_PARAMETER;
|
|
if (!(buffer = HeapAlloc( GetProcessHeap(), 0, secret_len ))) return STATUS_NO_MEMORY;
|
|
memcpy( buffer, secret, secret_len );
|
|
|
|
key->alg_id = id;
|
|
key->handle = 0; /* initialized on first use */
|
|
key->secret = buffer;
|
|
key->secret_len = secret_len;
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
static gnutls_cipher_algorithm_t get_gnutls_cipher( const struct key *key )
|
|
{
|
|
switch (key->alg_id)
|
|
{
|
|
case ALG_ID_AES:
|
|
FIXME( "handle block size and chaining mode\n" );
|
|
return GNUTLS_CIPHER_AES_128_CBC;
|
|
|
|
default:
|
|
FIXME( "algorithm %u not supported\n", key->alg_id );
|
|
return GNUTLS_CIPHER_UNKNOWN;
|
|
}
|
|
}
|
|
|
|
static NTSTATUS key_set_params( struct key *key, UCHAR *iv, ULONG iv_len )
|
|
{
|
|
gnutls_cipher_algorithm_t cipher;
|
|
gnutls_datum_t secret, vector;
|
|
int ret;
|
|
|
|
if (key->handle)
|
|
{
|
|
pgnutls_cipher_deinit( key->handle );
|
|
key->handle = NULL;
|
|
}
|
|
|
|
if ((cipher = get_gnutls_cipher( key )) == GNUTLS_CIPHER_UNKNOWN)
|
|
return STATUS_NOT_SUPPORTED;
|
|
|
|
secret.data = key->secret;
|
|
secret.size = key->secret_len;
|
|
if (iv)
|
|
{
|
|
vector.data = iv;
|
|
vector.size = iv_len;
|
|
}
|
|
|
|
if ((ret = pgnutls_cipher_init( &key->handle, cipher, &secret, iv ? &vector : NULL )))
|
|
{
|
|
pgnutls_perror( ret );
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
static NTSTATUS key_encrypt( struct key *key, const UCHAR *input, ULONG input_len, UCHAR *output,
|
|
ULONG output_len )
|
|
{
|
|
int ret;
|
|
|
|
if ((ret = pgnutls_cipher_encrypt2( key->handle, input, input_len, output, output_len )))
|
|
{
|
|
pgnutls_perror( ret );
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
static NTSTATUS key_decrypt( struct key *key, const UCHAR *input, ULONG input_len, UCHAR *output,
|
|
ULONG output_len )
|
|
{
|
|
int ret;
|
|
|
|
if ((ret = pgnutls_cipher_decrypt2( key->handle, input, input_len, output, output_len )))
|
|
{
|
|
pgnutls_perror( ret );
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
static NTSTATUS key_destroy( struct key *key )
|
|
{
|
|
if (key->handle) pgnutls_cipher_deinit( key->handle );
|
|
HeapFree( GetProcessHeap(), 0, key->secret );
|
|
HeapFree( GetProcessHeap(), 0, key );
|
|
return STATUS_SUCCESS;
|
|
}
|
|
#elif defined(HAVE_COMMONCRYPTO_COMMONCRYPTOR_H) && MAC_OS_X_VERSION_MAX_ALLOWED >= 1070
|
|
struct key
|
|
{
|
|
struct object hdr;
|
|
enum alg_id alg_id;
|
|
ULONG block_size;
|
|
CCCryptorRef ref_encrypt;
|
|
CCCryptorRef ref_decrypt;
|
|
UCHAR *secret;
|
|
ULONG secret_len;
|
|
};
|
|
|
|
static NTSTATUS key_init( struct key *key, enum alg_id id, const UCHAR *secret, ULONG secret_len )
|
|
{
|
|
UCHAR *buffer;
|
|
|
|
switch (id)
|
|
{
|
|
case ALG_ID_AES:
|
|
break;
|
|
|
|
default:
|
|
FIXME( "algorithm %u not supported\n", id );
|
|
return STATUS_NOT_SUPPORTED;
|
|
}
|
|
|
|
if (!(key->block_size = get_block_size( id ))) return STATUS_INVALID_PARAMETER;
|
|
if (!(buffer = HeapAlloc( GetProcessHeap(), 0, secret_len ))) return STATUS_NO_MEMORY;
|
|
memcpy( buffer, secret, secret_len );
|
|
|
|
key->alg_id = id;
|
|
key->ref_encrypt = NULL; /* initialized on first use */
|
|
key->ref_decrypt = NULL;
|
|
key->secret = buffer;
|
|
key->secret_len = secret_len;
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
static NTSTATUS key_set_params( struct key *key, UCHAR *iv, ULONG iv_len )
|
|
{
|
|
CCCryptorStatus status;
|
|
|
|
if (key->ref_encrypt)
|
|
{
|
|
CCCryptorRelease( key->ref_encrypt );
|
|
key->ref_encrypt = NULL;
|
|
}
|
|
if (key->ref_decrypt)
|
|
{
|
|
CCCryptorRelease( key->ref_decrypt );
|
|
key->ref_decrypt = NULL;
|
|
}
|
|
|
|
if ((status = CCCryptorCreateWithMode( kCCEncrypt, kCCModeCBC, kCCAlgorithmAES128, ccNoPadding, iv,
|
|
key->secret, key->secret_len, NULL, 0, 0, 0, &key->ref_encrypt )) != kCCSuccess)
|
|
{
|
|
WARN( "CCCryptorCreateWithMode failed %d\n", status );
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
if ((status = CCCryptorCreateWithMode( kCCDecrypt, kCCModeCBC, kCCAlgorithmAES128, ccNoPadding, iv,
|
|
key->secret, key->secret_len, NULL, 0, 0, 0, &key->ref_decrypt )) != kCCSuccess)
|
|
{
|
|
WARN( "CCCryptorCreateWithMode failed %d\n", status );
|
|
CCCryptorRelease( key->ref_encrypt );
|
|
key->ref_encrypt = NULL;
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
static NTSTATUS key_encrypt( struct key *key, const UCHAR *input, ULONG input_len, UCHAR *output,
|
|
ULONG output_len )
|
|
{
|
|
CCCryptorStatus status;
|
|
|
|
if ((status = CCCryptorUpdate( key->ref_encrypt, input, input_len, output, output_len, NULL )) != kCCSuccess)
|
|
{
|
|
WARN( "CCCryptorUpdate failed %d\n", status );
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
static NTSTATUS key_decrypt( struct key *key, const UCHAR *input, ULONG input_len, UCHAR *output,
|
|
ULONG output_len )
|
|
{
|
|
CCCryptorStatus status;
|
|
|
|
if ((status = CCCryptorUpdate( key->ref_decrypt, input, input_len, output, output_len, NULL )) != kCCSuccess)
|
|
{
|
|
WARN( "CCCryptorUpdate failed %d\n", status );
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
static NTSTATUS key_destroy( struct key *key )
|
|
{
|
|
if (key->ref_encrypt) CCCryptorRelease( key->ref_encrypt );
|
|
if (key->ref_decrypt) CCCryptorRelease( key->ref_decrypt );
|
|
HeapFree( GetProcessHeap(), 0, key->secret );
|
|
HeapFree( GetProcessHeap(), 0, key );
|
|
return STATUS_SUCCESS;
|
|
}
|
|
#else
|
|
struct key
|
|
{
|
|
struct object hdr;
|
|
ULONG block_size;
|
|
};
|
|
|
|
static NTSTATUS key_init( struct key *key, enum alg_id id, const UCHAR *secret, ULONG secret_len )
|
|
{
|
|
ERR( "support for keys not available at build time\n" );
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
static NTSTATUS key_set_params( struct key *key, UCHAR *iv, ULONG iv_len )
|
|
{
|
|
ERR( "support for keys not available at build time\n" );
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
static NTSTATUS key_encrypt( struct key *key, const UCHAR *input, ULONG input_len, UCHAR *output,
|
|
ULONG output_len )
|
|
{
|
|
ERR( "support for keys not available at build time\n" );
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
static NTSTATUS key_decrypt( struct key *key, const UCHAR *input, ULONG input_len, UCHAR *output,
|
|
ULONG output_len )
|
|
{
|
|
ERR( "support for keys not available at build time\n" );
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
static NTSTATUS key_destroy( struct key *key )
|
|
{
|
|
ERR( "support for keys not available at build time\n" );
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
#endif
|
|
|
|
NTSTATUS WINAPI BCryptGenerateSymmetricKey( BCRYPT_ALG_HANDLE algorithm, BCRYPT_KEY_HANDLE *handle,
|
|
UCHAR *object, ULONG object_len, UCHAR *secret, ULONG secret_len,
|
|
ULONG flags )
|
|
{
|
|
struct algorithm *alg = algorithm;
|
|
struct key *key;
|
|
NTSTATUS status;
|
|
|
|
TRACE( "%p, %p, %p, %u, %p, %u, %08x\n", algorithm, handle, object, object_len, secret, secret_len, flags );
|
|
|
|
if (!alg || alg->hdr.magic != MAGIC_ALG) return STATUS_INVALID_HANDLE;
|
|
if (object) FIXME( "ignoring object buffer\n" );
|
|
|
|
if (!(key = HeapAlloc( GetProcessHeap(), 0, sizeof(*key) ))) return STATUS_NO_MEMORY;
|
|
key->hdr.magic = MAGIC_KEY;
|
|
|
|
if ((status = key_init( key, alg->id, secret, secret_len )))
|
|
{
|
|
HeapFree( GetProcessHeap(), 0, key );
|
|
return status;
|
|
}
|
|
|
|
*handle = key;
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
NTSTATUS WINAPI BCryptDestroyKey( BCRYPT_KEY_HANDLE handle )
|
|
{
|
|
struct key *key = handle;
|
|
|
|
TRACE( "%p\n", handle );
|
|
|
|
if (!key || key->hdr.magic != MAGIC_KEY) return STATUS_INVALID_HANDLE;
|
|
return key_destroy( key );
|
|
}
|
|
|
|
NTSTATUS WINAPI BCryptEncrypt( BCRYPT_KEY_HANDLE handle, UCHAR *input, ULONG input_len,
|
|
void *padding, UCHAR *iv, ULONG iv_len, UCHAR *output,
|
|
ULONG output_len, ULONG *ret_len, ULONG flags )
|
|
{
|
|
struct key *key = handle;
|
|
ULONG bytes_left = input_len;
|
|
UCHAR *buf, *src, *dst;
|
|
NTSTATUS status;
|
|
|
|
TRACE( "%p, %p, %u, %p, %p, %u, %p, %u, %p, %08x\n", handle, input, input_len,
|
|
padding, iv, iv_len, output, output_len, ret_len, flags );
|
|
|
|
if (!key || key->hdr.magic != MAGIC_KEY) return STATUS_INVALID_HANDLE;
|
|
if (padding)
|
|
{
|
|
FIXME( "padding info not implemented\n" );
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
if (flags & ~BCRYPT_BLOCK_PADDING)
|
|
{
|
|
FIXME( "flags %08x not implemented\n", flags );
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
if ((status = key_set_params( key, iv, iv_len ))) return status;
|
|
|
|
*ret_len = input_len;
|
|
|
|
if (flags & BCRYPT_BLOCK_PADDING)
|
|
*ret_len = (input_len + key->block_size) & ~(key->block_size - 1);
|
|
else if (input_len & (key->block_size - 1))
|
|
return STATUS_INVALID_BUFFER_SIZE;
|
|
|
|
if (!output) return STATUS_SUCCESS;
|
|
if (output_len < *ret_len) return STATUS_BUFFER_TOO_SMALL;
|
|
|
|
src = input;
|
|
dst = output;
|
|
while (bytes_left >= key->block_size)
|
|
{
|
|
if ((status = key_encrypt( key, src, key->block_size, dst, key->block_size ))) return status;
|
|
bytes_left -= key->block_size;
|
|
src += key->block_size;
|
|
dst += key->block_size;
|
|
}
|
|
|
|
if (flags & BCRYPT_BLOCK_PADDING)
|
|
{
|
|
if (!(buf = HeapAlloc( GetProcessHeap(), 0, key->block_size ))) return STATUS_NO_MEMORY;
|
|
memcpy( buf, src, bytes_left );
|
|
memset( buf + bytes_left, key->block_size - bytes_left, key->block_size - bytes_left );
|
|
status = key_encrypt( key, buf, key->block_size, dst, key->block_size );
|
|
HeapFree( GetProcessHeap(), 0, buf );
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
NTSTATUS WINAPI BCryptDecrypt( BCRYPT_KEY_HANDLE handle, UCHAR *input, ULONG input_len,
|
|
void *padding, UCHAR *iv, ULONG iv_len, UCHAR *output,
|
|
ULONG output_len, ULONG *ret_len, ULONG flags )
|
|
{
|
|
struct key *key = handle;
|
|
ULONG bytes_left = input_len;
|
|
UCHAR *buf, *src, *dst;
|
|
NTSTATUS status;
|
|
|
|
TRACE( "%p, %p, %u, %p, %p, %u, %p, %u, %p, %08x\n", handle, input, input_len,
|
|
padding, iv, iv_len, output, output_len, ret_len, flags );
|
|
|
|
if (!key || key->hdr.magic != MAGIC_KEY) return STATUS_INVALID_HANDLE;
|
|
if (padding)
|
|
{
|
|
FIXME( "padding info not implemented\n" );
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
if (flags & ~BCRYPT_BLOCK_PADDING)
|
|
{
|
|
FIXME( "flags %08x not supported\n", flags );
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
if ((status = key_set_params( key, iv, iv_len ))) return status;
|
|
|
|
*ret_len = input_len;
|
|
|
|
if (input_len & (key->block_size - 1)) return STATUS_INVALID_BUFFER_SIZE;
|
|
if (!output) return STATUS_SUCCESS;
|
|
if (flags & BCRYPT_BLOCK_PADDING)
|
|
{
|
|
if (output_len + key->block_size < *ret_len) return STATUS_BUFFER_TOO_SMALL;
|
|
if (input_len < key->block_size) return STATUS_BUFFER_TOO_SMALL;
|
|
bytes_left -= key->block_size;
|
|
}
|
|
else if (output_len < *ret_len)
|
|
return STATUS_BUFFER_TOO_SMALL;
|
|
|
|
src = input;
|
|
dst = output;
|
|
while (bytes_left >= key->block_size)
|
|
{
|
|
if ((status = key_decrypt( key, src, key->block_size, dst, key->block_size ))) return status;
|
|
bytes_left -= key->block_size;
|
|
src += key->block_size;
|
|
dst += key->block_size;
|
|
}
|
|
|
|
if (flags & BCRYPT_BLOCK_PADDING)
|
|
{
|
|
if (!(buf = HeapAlloc( GetProcessHeap(), 0, key->block_size ))) return STATUS_NO_MEMORY;
|
|
status = key_decrypt( key, src, key->block_size, buf, key->block_size );
|
|
if (!status && buf[ key->block_size - 1 ] <= key->block_size)
|
|
{
|
|
*ret_len -= buf[ key->block_size - 1 ];
|
|
if (output_len < *ret_len) status = STATUS_BUFFER_TOO_SMALL;
|
|
else memcpy( dst, buf, key->block_size - buf[ key->block_size - 1 ] );
|
|
}
|
|
else
|
|
status = STATUS_UNSUCCESSFUL; /* FIXME: invalid padding */
|
|
HeapFree( GetProcessHeap(), 0, buf );
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
BOOL WINAPI DllMain( HINSTANCE hinst, DWORD reason, LPVOID reserved )
|
|
{
|
|
switch (reason)
|
|
{
|
|
case DLL_PROCESS_ATTACH:
|
|
instance = hinst;
|
|
DisableThreadLibraryCalls( hinst );
|
|
#if defined(HAVE_GNUTLS_CIPHER_INIT) && !defined(HAVE_COMMONCRYPTO_COMMONCRYPTOR_H)
|
|
gnutls_initialize();
|
|
#endif
|
|
break;
|
|
|
|
case DLL_PROCESS_DETACH:
|
|
if (reserved) break;
|
|
#if defined(HAVE_GNUTLS_CIPHER_INIT) && !defined(HAVE_COMMONCRYPTO_COMMONCRYPTOR_H)
|
|
gnutls_uninitialize();
|
|
#endif
|
|
break;
|
|
}
|
|
return TRUE;
|
|
}
|