diff options
Diffstat (limited to 'src/libstrongswan/plugins/padlock')
| -rw-r--r-- | src/libstrongswan/plugins/padlock/Makefile.am | 12 | ||||
| -rw-r--r-- | src/libstrongswan/plugins/padlock/Makefile.in | 500 | ||||
| -rw-r--r-- | src/libstrongswan/plugins/padlock/padlock_aes_crypter.c | 201 | ||||
| -rw-r--r-- | src/libstrongswan/plugins/padlock/padlock_aes_crypter.h | 50 | ||||
| -rw-r--r-- | src/libstrongswan/plugins/padlock/padlock_plugin.c | 64 | ||||
| -rw-r--r-- | src/libstrongswan/plugins/padlock/padlock_plugin.h | 47 | ||||
| -rw-r--r-- | src/libstrongswan/plugins/padlock/padlock_sha1_hasher.c | 177 | ||||
| -rw-r--r-- | src/libstrongswan/plugins/padlock/padlock_sha1_hasher.h | 48 |
8 files changed, 1099 insertions, 0 deletions
diff --git a/src/libstrongswan/plugins/padlock/Makefile.am b/src/libstrongswan/plugins/padlock/Makefile.am new file mode 100644 index 000000000..e2e76e9e6 --- /dev/null +++ b/src/libstrongswan/plugins/padlock/Makefile.am @@ -0,0 +1,12 @@ + +INCLUDES = -I$(top_srcdir)/src/libstrongswan + +AM_CFLAGS = -rdynamic + +plugin_LTLIBRARIES = libstrongswan-padlock.la + +libstrongswan_padlock_la_SOURCES = padlock_plugin.h padlock_plugin.c \ + padlock_aes_crypter.c padlock_aes_crypter.h \ + padlock_sha1_hasher.c padlock_sha1_hasher.h +libstrongswan_padlock_la_LDFLAGS = -module + diff --git a/src/libstrongswan/plugins/padlock/Makefile.in b/src/libstrongswan/plugins/padlock/Makefile.in new file mode 100644 index 000000000..d96b2cf6d --- /dev/null +++ b/src/libstrongswan/plugins/padlock/Makefile.in @@ -0,0 +1,500 @@ +# Makefile.in generated by automake 1.10.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +subdir = src/libstrongswan/plugins/padlock +DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 +am__aclocal_m4_deps = $(top_srcdir)/configure.in +am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \ + $(ACLOCAL_M4) +mkinstalldirs = $(install_sh) -d +CONFIG_CLEAN_FILES = +am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; +am__vpath_adj = case $$p in \ + $(srcdir)/*) f=`echo "$$p" | sed "s|^$$srcdirstrip/||"`;; \ + *) f=$$p;; \ + esac; +am__strip_dir = `echo $$p | sed -e 's|^.*/||'`; +am__installdirs = "$(DESTDIR)$(plugindir)" +pluginLTLIBRARIES_INSTALL = $(INSTALL) +LTLIBRARIES = $(plugin_LTLIBRARIES) +libstrongswan_padlock_la_LIBADD = +am_libstrongswan_padlock_la_OBJECTS = padlock_plugin.lo \ + padlock_aes_crypter.lo padlock_sha1_hasher.lo +libstrongswan_padlock_la_OBJECTS = \ + $(am_libstrongswan_padlock_la_OBJECTS) +libstrongswan_padlock_la_LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) \ + $(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \ + $(libstrongswan_padlock_la_LDFLAGS) $(LDFLAGS) -o $@ +DEFAULT_INCLUDES = -I.@am__isrc@ +depcomp = $(SHELL) $(top_srcdir)/depcomp +am__depfiles_maybe = depfiles +COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \ + $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) +LTCOMPILE = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \ + --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \ + $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) +CCLD = $(CC) +LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \ + --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) \ + $(LDFLAGS) -o $@ +SOURCES = $(libstrongswan_padlock_la_SOURCES) +DIST_SOURCES = $(libstrongswan_padlock_la_SOURCES) +ETAGS = etags +CTAGS = ctags +DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST) +ACLOCAL = @ACLOCAL@ +AMTAR = @AMTAR@ +AR = @AR@ +AUTOCONF = @AUTOCONF@ +AUTOHEADER = @AUTOHEADER@ 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+.PRECIOUS: Makefile +Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status + @case '$?' in \ + *config.status*) \ + cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \ + *) \ + echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \ + cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \ + esac; + +$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES) + cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh + +$(top_srcdir)/configure: $(am__configure_deps) + cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh +$(ACLOCAL_M4): $(am__aclocal_m4_deps) + cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh +install-pluginLTLIBRARIES: $(plugin_LTLIBRARIES) + @$(NORMAL_INSTALL) + test -z "$(plugindir)" || $(MKDIR_P) "$(DESTDIR)$(plugindir)" + @list='$(plugin_LTLIBRARIES)'; for p in $$list; do \ + if test -f $$p; then \ + f=$(am__strip_dir) \ + echo " $(LIBTOOL) 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install +mostlyclean-generic: + +clean-generic: + +distclean-generic: + -test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES) + +maintainer-clean-generic: + @echo "This command is intended for maintainers to use" + @echo "it deletes files that may require special tools to rebuild." +clean: clean-am + +clean-am: clean-generic clean-libtool clean-pluginLTLIBRARIES \ + mostlyclean-am + +distclean: distclean-am + -rm -rf ./$(DEPDIR) + -rm -f Makefile +distclean-am: clean-am distclean-compile distclean-generic \ + distclean-tags + +dvi: dvi-am + +dvi-am: + +html: html-am + +info: info-am + +info-am: + +install-data-am: install-pluginLTLIBRARIES + +install-dvi: install-dvi-am + +install-exec-am: + +install-html: install-html-am + +install-info: install-info-am + +install-man: + +install-pdf: install-pdf-am + +install-ps: install-ps-am + +installcheck-am: + +maintainer-clean: maintainer-clean-am + -rm -rf ./$(DEPDIR) + -rm -f Makefile +maintainer-clean-am: distclean-am maintainer-clean-generic + +mostlyclean: mostlyclean-am + +mostlyclean-am: mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool + +pdf: pdf-am + +pdf-am: + +ps: ps-am + +ps-am: + +uninstall-am: uninstall-pluginLTLIBRARIES + +.MAKE: install-am install-strip + +.PHONY: CTAGS GTAGS all all-am check check-am clean clean-generic \ + clean-libtool clean-pluginLTLIBRARIES ctags distclean \ + distclean-compile distclean-generic distclean-libtool \ + distclean-tags distdir dvi dvi-am html html-am info info-am \ + install install-am install-data install-data-am install-dvi \ + install-dvi-am install-exec install-exec-am install-html \ + install-html-am install-info install-info-am install-man \ + install-pdf install-pdf-am install-pluginLTLIBRARIES \ + install-ps install-ps-am install-strip installcheck \ + installcheck-am installdirs maintainer-clean \ + maintainer-clean-generic mostlyclean mostlyclean-compile \ + mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \ + tags uninstall uninstall-am uninstall-pluginLTLIBRARIES + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/src/libstrongswan/plugins/padlock/padlock_aes_crypter.c b/src/libstrongswan/plugins/padlock/padlock_aes_crypter.c new file mode 100644 index 000000000..f6f9b3501 --- /dev/null +++ b/src/libstrongswan/plugins/padlock/padlock_aes_crypter.c @@ -0,0 +1,201 @@ +/* + * Copyright (C) 2008 Thomas Kallenberg + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * $Id$ + */ + +#include "padlock_aes_crypter.h" +#include <stdio.h> + +#define AES_BLOCK_SIZE 16 +#define PADLOCK_ALIGN __attribute__ ((__aligned__(16))) + +typedef struct private_padlock_aes_crypter_t private_padlock_aes_crypter_t; + +/** + * Private data of padlock_aes_crypter_t + */ +struct private_padlock_aes_crypter_t { + + /** + * Public part of this class. + */ + padlock_aes_crypter_t public; + + /* + * the key + */ + chunk_t key; +}; + +/** + * Control word structure to pass to crypt operations + */ +typedef struct { + u_int __attribute__ ((__packed__)) + rounds:4, + algo:3, + keygen:1, + interm:1, + encdec:1, + ksize:2; + /* microcode needs additional bytes for calculation */ + u_char buf[124]; +} cword; + +/** + * Invoke the actual de/encryption + */ +static void padlock_crypt(void *key, void *ctrl, void *src, void *dst, + int count, void *iv) +{ + asm volatile( + "pushl %%eax\n pushl %%ebx\n pushl %%ecx\n" + "pushl %%edx\n pushl %%esi\n pushl %%edi\n" + "pushfl\n popfl\n" + "movl %0, %%eax\n" + "movl %1, %%ebx\n" + "movl %2, %%ecx\n" + "movl %3, %%edx\n" + "movl %4, %%esi\n" + "movl %5, %%edi\n" + "rep\n" + ".byte 0x0f, 0xa7, 0xd0\n" + "popl %%edi\n popl %%esi\n popl %%edx\n" + "popl %%ecx\n popl %%ebx\n popl %%eax\n" + : + : "m"(iv),"m"(key), "m"(count), "m"(ctrl), "m"(src), "m"(dst) + : "eax", "ecx", "edx", "esi", "edi"); +} + +/* + * Implementation of crypter_t.crypt + */ +static void crypt(private_padlock_aes_crypter_t *this, char *iv, + chunk_t src, chunk_t *dst, bool enc) +{ + cword cword PADLOCK_ALIGN; + u_char key_aligned[256] PADLOCK_ALIGN; + u_char iv_aligned[16] PADLOCK_ALIGN; + + memset(&cword, 0, sizeof(cword)); + + /* set encryption/decryption flag */ + cword.encdec = enc; + /* calculate rounds and key size */ + cword.rounds = 10 + (this->key.len - 16) / 4; + cword.ksize = (this->key.len - 16) / 8; + /* enable autoalign */ + cword.algo |= 2; + + /* move data to aligned buffers */ + memcpy(iv_aligned, iv, sizeof(iv_aligned)); + memcpy(key_aligned, this->key.ptr, this->key.len); + + *dst = chunk_alloc(src.len); + padlock_crypt(key_aligned, &cword, src.ptr, dst->ptr, + src.len / AES_BLOCK_SIZE, iv_aligned); +} + +/** + * Implementation of crypter_t.decrypt. + */ +static void decrypt(private_padlock_aes_crypter_t *this, chunk_t data, + chunk_t iv, chunk_t *dst) +{ + crypt(this, iv.ptr, data, dst, TRUE); +} + + +/** + * Implementation of crypter_t.encrypt. + */ +static void encrypt (private_padlock_aes_crypter_t *this, chunk_t data, + chunk_t iv, chunk_t *dst) +{ + crypt(this, iv.ptr, data, dst, FALSE); +} + +/** + * Implementation of crypter_t.get_block_size. + */ +static size_t get_block_size(private_padlock_aes_crypter_t *this) +{ + return AES_BLOCK_SIZE; +} + +/** + * Implementation of crypter_t.get_key_size. + */ +static size_t get_key_size(private_padlock_aes_crypter_t *this) +{ + return this->key.len; +} + +/** + * Implementation of crypter_t.set_key. + */ +static void set_key(private_padlock_aes_crypter_t *this, chunk_t key) +{ + memcpy(this->key.ptr, key.ptr, min(key.len, this->key.len)); +} + +/** + * Implementation of crypter_t.destroy and aes_crypter_t.destroy. + */ +static void destroy (private_padlock_aes_crypter_t *this) +{ + free(this->key.ptr); + free(this); +} + +/* + * Described in header + */ +padlock_aes_crypter_t *padlock_aes_crypter_create(encryption_algorithm_t algo, + size_t key_size) +{ + private_padlock_aes_crypter_t *this; + + if (algo != ENCR_AES_CBC) + { + return NULL; + } + + this = malloc_thing(private_padlock_aes_crypter_t); + + switch (key_size) + { + case 16: /* AES 128 */ + break; + case 24: /* AES-192 */ + case 32: /* AES-256 */ + /* These need an expanded key, currently not supported, FALL */ + default: + free(this); + return NULL; + } + + this->key = chunk_alloc(key_size); + + this->public.crypter_interface.encrypt = (void (*) (crypter_t *, chunk_t,chunk_t, chunk_t *)) encrypt; + this->public.crypter_interface.decrypt = (void (*) (crypter_t *, chunk_t , chunk_t, chunk_t *)) decrypt; + this->public.crypter_interface.get_block_size = (size_t (*) (crypter_t *)) get_block_size; + this->public.crypter_interface.get_key_size = (size_t (*) (crypter_t *)) get_key_size; + this->public.crypter_interface.set_key = (void (*) (crypter_t *,chunk_t)) set_key; + this->public.crypter_interface.destroy = (void (*) (crypter_t *)) destroy; + + return &this->public; +} diff --git a/src/libstrongswan/plugins/padlock/padlock_aes_crypter.h b/src/libstrongswan/plugins/padlock/padlock_aes_crypter.h new file mode 100644 index 000000000..e8b01633d --- /dev/null +++ b/src/libstrongswan/plugins/padlock/padlock_aes_crypter.h @@ -0,0 +1,50 @@ +/* + * Copyright (C) 2008 Thomas Kallenberg + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup padlock_aes_crypter padlock_aes_crypter + * @{ @ingroup padlock_p + */ + +#ifndef PADLOCK_AES_CRYPTER_H_ +#define PADLOCK_AES_CRYPTER_H_ + +typedef struct padlock_aes_crypter_t padlock_aes_crypter_t; + +#include <crypto/crypters/crypter.h> + +/** + * Implementation of AES-128 using VIA Padlock. + */ +struct padlock_aes_crypter_t { + + /** + * The crypter_t interface. + */ + crypter_t crypter_interface; +}; + +/** + * Constructor to create padlock_aes_crypter_t. + * + * @param key_size key size in bytes, currently supports only 16. + * @param algo algorithm to implement, must be ENCR_AES_CBC + * @return padlock_aes_crypter_t, NULL if not supported + */ +padlock_aes_crypter_t *padlock_aes_crypter_create(encryption_algorithm_t algo, + size_t key_size); + +#endif /* PADLOCK_AES_CRYPTER_H_ @}*/ diff --git a/src/libstrongswan/plugins/padlock/padlock_plugin.c b/src/libstrongswan/plugins/padlock/padlock_plugin.c new file mode 100644 index 000000000..822acc4a2 --- /dev/null +++ b/src/libstrongswan/plugins/padlock/padlock_plugin.c @@ -0,0 +1,64 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * $Id$ + */ + +#include "padlock_plugin.h" + +#include <library.h> +#include "padlock_aes_crypter.h" +#include "padlock_sha1_hasher.h" + +typedef struct private_padlock_plugin_t private_padlock_plugin_t; + +/** + * private data of aes_plugin + */ +struct private_padlock_plugin_t { + + /** + * public functions + */ + padlock_plugin_t public; +}; + +/** + * Implementation of aes_plugin_t.destroy + */ +static void destroy(private_padlock_plugin_t *this) +{ + lib->crypto->remove_crypter(lib->crypto, + (crypter_constructor_t)padlock_aes_crypter_create); + lib->crypto->remove_hasher(lib->crypto, + (hasher_constructor_t)padlock_sha1_hasher_create); + free(this); +} + +/* + * see header file + */ +plugin_t *plugin_create() +{ + private_padlock_plugin_t *this = malloc_thing(private_padlock_plugin_t); + + this->public.plugin.destroy = (void(*)(plugin_t*))destroy; + + lib->crypto->add_crypter(lib->crypto, ENCR_AES_CBC, + (crypter_constructor_t)padlock_aes_crypter_create); + lib->crypto->add_hasher(lib->crypto, HASH_SHA1, + (hasher_constructor_t)padlock_sha1_hasher_create); + + return &this->public.plugin; +} diff --git a/src/libstrongswan/plugins/padlock/padlock_plugin.h b/src/libstrongswan/plugins/padlock/padlock_plugin.h new file mode 100644 index 000000000..7e013a5f7 --- /dev/null +++ b/src/libstrongswan/plugins/padlock/padlock_plugin.h @@ -0,0 +1,47 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup padlock_p padlock + * @ingroup plugins + * + * @defgroup padlock_plugin padlock_plugin + * @{ @ingroup padlock_p + */ + +#ifndef PADLOCK_PLUGIN_H_ +#define PADLOCK_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct padlock_plugin_t padlock_plugin_t; + +/** + * Plugin implementing VIA Padlock crypto functions + */ +struct padlock_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +/** + * Create a padlock_plugin instance. + */ +plugin_t *plugin_create(); + +#endif /* PADLOCK_PLUGIN_H_ @}*/ diff --git a/src/libstrongswan/plugins/padlock/padlock_sha1_hasher.c b/src/libstrongswan/plugins/padlock/padlock_sha1_hasher.c new file mode 100644 index 000000000..4ac5ddf4d --- /dev/null +++ b/src/libstrongswan/plugins/padlock/padlock_sha1_hasher.c @@ -0,0 +1,177 @@ +/* + * Copyright (C) 2008 Thomas Kallenberg + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * $Id$ + */ + +#include <string.h> +#include <arpa/inet.h> +#include <byteswap.h> + +#include "padlock_sha1_hasher.h" + +#define PADLOCK_ALIGN __attribute__ ((__aligned__(16))) + +typedef struct private_padlock_sha1_hasher_t private_padlock_sha1_hasher_t; + +/** + * Private data structure with hasing context. + */ +struct private_padlock_sha1_hasher_t { + /** + * Public interface for this hasher. + */ + padlock_sha1_hasher_t public; + + /** + * data collected to hash + */ + chunk_t data; +}; + +/** + * Invoke the actual padlock sha1() operation + */ +static void padlock_sha1(int len, u_char *in, u_char *out) +{ + /* rep xsha1 */ + asm volatile ( + ".byte 0xf3, 0x0f, 0xa6, 0xc8" + : "+S"(in), "+D"(out) + : "c"(len), "a"(0)); +} + +/** + * sha1() a buffer of data into digest + */ +static void sha1(chunk_t data, u_int32_t *digest) +{ + u_int32_t hash[128] PADLOCK_ALIGN; + + hash[0] = 0x67452301; + hash[1] = 0xefcdab89; + hash[2] = 0x98badcfe; + hash[3] = 0x10325476; + hash[4] = 0xc3d2e1f0; + + padlock_sha1(data.len, data.ptr, (u_char*)hash); + + digest[0] = bswap_32(hash[0]); + digest[1] = bswap_32(hash[1]); + digest[2] = bswap_32(hash[2]); + digest[3] = bswap_32(hash[3]); + digest[4] = bswap_32(hash[4]); +} + +/** + * append data to the to-be-hashed buffer + */ +static void append_data(private_padlock_sha1_hasher_t *this, chunk_t data) +{ + this->data.ptr = realloc(this->data.ptr, this->data.len + data.len); + memcpy(this->data.ptr + this->data.len, data.ptr, data.len); + this->data.len += data.len; +} + +/** + * Implementation of hasher_t.reset. + */ +static void reset(private_padlock_sha1_hasher_t *this) +{ + chunk_free(&this->data); +} + +/** + * Implementation of hasher_t.get_hash. + */ +static void get_hash(private_padlock_sha1_hasher_t *this, chunk_t chunk, + u_int8_t *hash) +{ + if (hash) + { + if (this->data.len) + { + append_data(this, chunk); + sha1(this->data, (u_int32_t*)hash); + } + else + { /* hash directly if no previous data found */ + sha1(chunk, (u_int32_t*)hash); + } + reset(this); + } + else + { + append_data(this, chunk); + } +} + +/** + * Implementation of hasher_t.allocate_hash. + */ +static void allocate_hash(private_padlock_sha1_hasher_t *this, chunk_t chunk, + chunk_t *hash) +{ + if (hash) + { + *hash = chunk_alloc(HASH_SIZE_SHA1); + get_hash(this, chunk, hash->ptr); + } + else + { + get_hash(this, chunk, NULL); + } +} + +/** + * Implementation of hasher_t.get_hash_size. + */ +static size_t get_hash_size(private_padlock_sha1_hasher_t *this) +{ + return HASH_SIZE_SHA1; +} + +/** + * Implementation of hasher_t.destroy. + */ +static void destroy(private_padlock_sha1_hasher_t *this) +{ + free(this->data.ptr); + free(this); +} + +/* + * Described in header. + */ +padlock_sha1_hasher_t *padlock_sha1_hasher_create(hash_algorithm_t algo) +{ + private_padlock_sha1_hasher_t *this; + + if (algo != HASH_SHA1) + { + return NULL; + } + + this = malloc_thing(private_padlock_sha1_hasher_t); + this->public.hasher_interface.get_hash = (void (*) (hasher_t*, chunk_t, u_int8_t*))get_hash; + this->public.hasher_interface.allocate_hash = (void (*) (hasher_t*, chunk_t, chunk_t*))allocate_hash; + this->public.hasher_interface.get_hash_size = (size_t (*) (hasher_t*))get_hash_size; + this->public.hasher_interface.reset = (void (*) (hasher_t*))reset; + this->public.hasher_interface.destroy = (void (*) (hasher_t*))destroy; + + this->data = chunk_empty; + + return &(this->public); +} diff --git a/src/libstrongswan/plugins/padlock/padlock_sha1_hasher.h b/src/libstrongswan/plugins/padlock/padlock_sha1_hasher.h new file mode 100644 index 000000000..6855b827f --- /dev/null +++ b/src/libstrongswan/plugins/padlock/padlock_sha1_hasher.h @@ -0,0 +1,48 @@ +/* + * Copyright (C) 2008 Thomas Kallenberg + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup sha1_hasher sha1_hasher + * @{ @ingroup sha1_p + */ + +#ifndef PADLOCK_SHA1_HASHER_H_ +#define PADLOCK_SHA1_HASHER_H_ + +typedef struct padlock_sha1_hasher_t padlock_sha1_hasher_t; + +#include <crypto/hashers/hasher.h> + +/** + * Implementation of hasher_t interface using the SHA1 algorithm. + */ +struct padlock_sha1_hasher_t { + + /** + * Implements hasher_t interface. + */ + hasher_t hasher_interface; +}; + +/** + * Creates a new sha1_hasher_t. + * + * @param algo algorithm, must be HASH_SHA1 + * @return sha1_hasher_t object + */ +padlock_sha1_hasher_t *padlock_sha1_hasher_create(hash_algorithm_t algo); + +#endif /*SHA1_HASHER_H_ @}*/ |