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-rw-r--r--crypto/ics/Android.mk25
-rw-r--r--crypto/ics/cryptfs.c729
-rw-r--r--crypto/ics/cryptfs.h86
3 files changed, 0 insertions, 840 deletions
diff --git a/crypto/ics/Android.mk b/crypto/ics/Android.mk
deleted file mode 100644
index 5616c195a..000000000
--- a/crypto/ics/Android.mk
+++ /dev/null
@@ -1,25 +0,0 @@
-LOCAL_PATH := $(call my-dir)
-ifeq ($(TW_INCLUDE_CRYPTO), true)
-include $(CLEAR_VARS)
-
-LOCAL_MODULE := libcryptfsics
-LOCAL_MODULE_TAGS := eng optional
-LOCAL_CFLAGS :=
-LOCAL_CFLAGS += -DCRYPTO_FS_TYPE=\"$(TW_CRYPTO_FS_TYPE)\"
-ifeq ($(TW_INCLUDE_CRYPTO_SAMSUNG), true)
- LOCAL_CFLAGS += -DTW_INCLUDE_CRYPTO_SAMSUNG=\"$(TW_INCLUDE_CRYPTO_SAMSUNG)\"
- LOCAL_LDFLAGS += -ldl
- LOCAL_STATIC_LIBRARIES += libcrypt_samsung
-endif
-ifneq ($(TW_INTERNAL_STORAGE_PATH),)
- LOCAL_CFLAGS += -DTW_INTERNAL_STORAGE_PATH=$(TW_INTERNAL_STORAGE_PATH)
-endif
-ifneq ($(TW_EXTERNAL_STORAGE_PATH),)
- LOCAL_CFLAGS += -DTW_EXTERNAL_STORAGE_PATH=$(TW_EXTERNAL_STORAGE_PATH)
-endif
-LOCAL_SRC_FILES = cryptfs.c
-LOCAL_C_INCLUDES += system/extras/ext4_utils external/openssl/include
-LOCAL_SHARED_LIBRARIES += libc liblog libcutils libcrypto
-
-include $(BUILD_SHARED_LIBRARY)
-endif
diff --git a/crypto/ics/cryptfs.c b/crypto/ics/cryptfs.c
deleted file mode 100644
index 4f3d5d01a..000000000
--- a/crypto/ics/cryptfs.c
+++ /dev/null
@@ -1,729 +0,0 @@
-/*
- * Copyright (C) 2010 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/* TO DO:
- * 1. Perhaps keep several copies of the encrypted key, in case something
- * goes horribly wrong?
- *
- */
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <sys/ioctl.h>
-#include <linux/dm-ioctl.h>
-#include <libgen.h>
-#include <stdlib.h>
-#include <sys/param.h>
-#include <string.h>
-#include <sys/mount.h>
-#include <openssl/evp.h>
-#include <openssl/sha.h>
-#include <errno.h>
-#include <cutils/android_reboot.h>
-#include <ext4.h>
-#include <linux/kdev_t.h>
-#include "cryptfs.h"
-#define LOG_TAG "Cryptfs"
-#include "cutils/log.h"
-#include "cutils/properties.h"
-#include "hardware_legacy/power.h"
-//#include "VolumeManager.h"
-
-#define DM_CRYPT_BUF_SIZE 4096
-#define DATA_MNT_POINT "/data"
-
-#define HASH_COUNT 2000
-#ifdef TW_INCLUDE_CRYPTO_SAMSUNG
-#define KEY_LEN_BYTES_SAMSUNG (sizeof(edk_t))
-#endif
-#define KEY_LEN_BYTES 16
-#define IV_LEN_BYTES 16
-
-#define KEY_LOC_PROP "ro.crypto.keyfile.userdata"
-#define KEY_IN_FOOTER "footer"
-
-#define EXT4_FS 1
-#define FAT_FS 2
-
-#ifndef EXPAND
-#define STRINGIFY(x) #x
-#define EXPAND(x) STRINGIFY(x)
-#endif
-
-char *me = "cryptfs";
-
-static char *saved_data_blkdev;
-static char *saved_mount_point;
-static int master_key_saved = 0;
-#ifdef TW_INCLUDE_CRYPTO_SAMSUNG
-static int using_samsung_encryption = 0;
-//static edk_t saved_master_key;
-static unsigned char saved_master_key[KEY_LEN_BYTES_SAMSUNG];
-edk_payload_t edk_payload;
-#else
-static unsigned char saved_master_key[KEY_LEN_BYTES];
-#endif
-
-int cryptfs_setup_volume(const char *label, const char *real_blkdev, char *crypto_blkdev);
-
-
-static void ioctl_init(struct dm_ioctl *io, size_t dataSize, const char *name, unsigned flags)
-{
- memset(io, 0, dataSize);
- io->data_size = dataSize;
- io->data_start = sizeof(struct dm_ioctl);
- io->version[0] = 4;
- io->version[1] = 0;
- io->version[2] = 0;
- io->flags = flags;
- if (name) {
- strncpy(io->name, name, sizeof(io->name));
- }
-}
-
-static unsigned int get_blkdev_size(int fd)
-{
- unsigned int nr_sec;
-
- if ( (ioctl(fd, BLKGETSIZE, &nr_sec)) == -1) {
- nr_sec = 0;
- }
-
- return nr_sec;
-}
-
-/* key or salt can be NULL, in which case just skip writing that value. Useful to
- * update the failed mount count but not change the key.
- */
-static int put_crypt_ftr_and_key(char *real_blk_name, struct crypt_mnt_ftr *crypt_ftr,
- unsigned char *key, unsigned char *salt)
-{
- // we don't need to update it...
- return 0;
-}
-
-static int get_crypt_ftr_and_key(char *real_blk_name, struct crypt_mnt_ftr *crypt_ftr,
- unsigned char *key, unsigned char *salt)
-{
- int fd;
- unsigned int nr_sec, cnt;
- off64_t off;
- int rc = -1;
- char key_loc[PROPERTY_VALUE_MAX];
- char *fname;
- struct stat statbuf;
-
- property_get(KEY_LOC_PROP, key_loc, KEY_IN_FOOTER);
-
- if (!strcmp(key_loc, KEY_IN_FOOTER)) {
- fname = real_blk_name;
- if ( (fd = open(fname, O_RDONLY)) < 0) {
- printf("Cannot open real block device %s\n", fname);
- return -1;
- }
-
- if ( (nr_sec = get_blkdev_size(fd)) == 0) {
- SLOGE("Cannot get size of block device %s\n", fname);
- goto errout;
- }
-
- /* If it's an encrypted Android partition, the last 16 Kbytes contain the
- * encryption info footer and key, and plenty of bytes to spare for future
- * growth.
- */
- off = ((off64_t)nr_sec * 512) - CRYPT_FOOTER_OFFSET;
-
- if (lseek64(fd, off, SEEK_SET) == -1) {
- printf("Cannot seek to real block device footer\n");
- goto errout;
- }
- } else if (key_loc[0] == '/') {
- fname = key_loc;
- if ( (fd = open(fname, O_RDONLY)) < 0) {
- printf("Cannot open footer file %s\n", fname);
- return -1;
- }
-
- /* Make sure it's 16 Kbytes in length */
- fstat(fd, &statbuf);
- if (S_ISREG(statbuf.st_mode) && (statbuf.st_size != 0x4000
-#ifdef TW_INCLUDE_CRYPTO_SAMSUNG
- && statbuf.st_size != 0x8000
-#endif
- )) {
- printf("footer file %s is not the expected size!\n", fname);
- goto errout;
- }
- } else {
- printf("Unexpected value for" KEY_LOC_PROP "\n");
- return -1;;
- }
-
- if ( (cnt = read(fd, crypt_ftr, sizeof(struct crypt_mnt_ftr))) != sizeof(struct crypt_mnt_ftr)) {
- printf("Cannot read real block device footer\n");
- goto errout;
- }
-
- if (crypt_ftr->magic != CRYPT_MNT_MAGIC) {
-#ifdef TW_INCLUDE_CRYPTO_SAMSUNG
- if (crypt_ftr->magic != CRYPT_MNT_MAGIC_SAMSUNG) {
- printf("Bad magic for real block device %s\n", fname);
- goto errout;
- } else {
- printf("Using Samsung encryption.\n");
- using_samsung_encryption = 1;
- if ( (cnt = read(fd, &edk_payload, sizeof(edk_payload_t))) != sizeof(edk_payload_t)) {
- printf("Cannot read EDK payload from real block device footer\n");
- goto errout;
- }
- if (lseek64(fd, sizeof(__le32), SEEK_CUR) == -1) {
- printf("Cannot seek past unknown data from real block device footer\n");
- goto errout;
- }
- memcpy(key, &edk_payload, sizeof(edk_payload_t));
- }
-#else
- printf("Bad magic for real block device %s\n", fname);
- goto errout;
-#endif
- }
-
- if (crypt_ftr->major_version != 1) {
- printf("Cannot understand major version %d real block device footer\n",
- crypt_ftr->major_version);
- goto errout;
- }
-
- if (crypt_ftr->minor_version != 0) {
- printf("Warning: crypto footer minor version %d, expected 0, continuing...\n",
- crypt_ftr->minor_version);
- }
-
- if (crypt_ftr->ftr_size > sizeof(struct crypt_mnt_ftr)) {
- /* the footer size is bigger than we expected.
- * Skip to it's stated end so we can read the key.
- */
- if (lseek64(fd, crypt_ftr->ftr_size - sizeof(struct crypt_mnt_ftr), SEEK_CUR) == -1) {
- printf("Cannot seek to start of key\n");
- goto errout;
- }
- }
-
- if (crypt_ftr->keysize > sizeof(saved_master_key)) {
- printf("Keysize of %d bits not supported for real block device %s\n",
- crypt_ftr->keysize * 8, fname);
- goto errout;
- }
-
- if ( (cnt = read(fd, key, crypt_ftr->keysize)) != crypt_ftr->keysize) {
- printf("Cannot read key for real block device %s\n", fname);
- goto errout;
- }
-
- if (lseek64(fd, KEY_TO_SALT_PADDING, SEEK_CUR) == -1) {
- printf("Cannot seek to real block device salt\n");
- goto errout;
- }
-
- if ( (cnt = read(fd, salt, SALT_LEN)) != SALT_LEN) {
- printf("Cannot read salt for real block device %s\n", fname);
- goto errout;
- }
-
- /* Success! */
- rc = 0;
-
-errout:
- close(fd);
- return rc;
-}
-
-/* Convert a binary key of specified length into an ascii hex string equivalent,
- * without the leading 0x and with null termination
- */
-void convert_key_to_hex_ascii(unsigned char *master_key, unsigned int keysize,
- char *master_key_ascii)
-{
- unsigned int i, a;
- unsigned char nibble;
-
- for (i=0, a=0; i<keysize; i++, a+=2) {
- /* For each byte, write out two ascii hex digits */
- nibble = (master_key[i] >> 4) & 0xf;
- master_key_ascii[a] = nibble + (nibble > 9 ? 0x37 : 0x30);
-
- nibble = master_key[i] & 0xf;
- master_key_ascii[a+1] = nibble + (nibble > 9 ? 0x37 : 0x30);
- }
-
- /* Add the null termination */
- master_key_ascii[a] = '\0';
-
-}
-
-static int create_crypto_blk_dev(struct crypt_mnt_ftr *crypt_ftr, unsigned char *master_key,
- const char *real_blk_name, char *crypto_blk_name, const char *name)
-{
- char buffer[DM_CRYPT_BUF_SIZE];
- char master_key_ascii[129]; /* Large enough to hold 512 bit key and null */
- char *crypt_params;
- struct dm_ioctl *io;
- struct dm_target_spec *tgt;
- unsigned int minor;
- int fd;
- int retval = -1;
-
- if ((fd = open("/dev/device-mapper", O_RDWR)) < 0 ) {
- printf("Cannot open device-mapper\n");
- goto errout;
- }
-
- io = (struct dm_ioctl *) buffer;
-
- ioctl_init(io, DM_CRYPT_BUF_SIZE, name, 0);
- if (ioctl(fd, DM_DEV_CREATE, io)) {
- printf("Cannot create dm-crypt device\n");
- goto errout;
- }
-
- /* Get the device status, in particular, the name of it's device file */
- ioctl_init(io, DM_CRYPT_BUF_SIZE, name, 0);
- if (ioctl(fd, DM_DEV_STATUS, io)) {
- printf("Cannot retrieve dm-crypt device status\n");
- goto errout;
- }
- minor = (io->dev & 0xff) | ((io->dev >> 12) & 0xfff00);
- snprintf(crypto_blk_name, MAXPATHLEN, "/dev/block/dm-%u", minor);
-
- /* Load the mapping table for this device */
- tgt = (struct dm_target_spec *) &buffer[sizeof(struct dm_ioctl)];
-
- ioctl_init(io, 4096, name, 0);
- io->target_count = 1;
- tgt->status = 0;
- tgt->sector_start = 0;
- tgt->length = crypt_ftr->fs_size;
- strcpy(tgt->target_type, "crypt");
-
- crypt_params = buffer + sizeof(struct dm_ioctl) + sizeof(struct dm_target_spec);
- convert_key_to_hex_ascii(master_key, crypt_ftr->keysize, master_key_ascii);
- sprintf(crypt_params, "%s %s 0 %s 0", crypt_ftr->crypto_type_name,
- master_key_ascii, real_blk_name);
- //printf("cryptsetup params: '%s'\n", crypt_params);
- crypt_params += strlen(crypt_params) + 1;
- crypt_params = (char *) (((unsigned long)crypt_params + 7) & ~8); /* Align to an 8 byte boundary */
- tgt->next = crypt_params - buffer;
-
- if (ioctl(fd, DM_TABLE_LOAD, io)) {
- printf("Cannot load dm-crypt mapping table.\n");
- goto errout;
- }
-
- /* Resume this device to activate it */
- ioctl_init(io, 4096, name, 0);
-
- if (ioctl(fd, DM_DEV_SUSPEND, io)) {
- printf("Cannot resume the dm-crypt device\n");
- goto errout;
- }
-
- /* We made it here with no errors. Woot! */
- retval = 0;
-
-errout:
- close(fd); /* If fd is <0 from a failed open call, it's safe to just ignore the close error */
-
- return retval;
-}
-
-static int delete_crypto_blk_dev(const char *name)
-{
- int fd;
- char buffer[DM_CRYPT_BUF_SIZE];
- struct dm_ioctl *io;
- int retval = -1;
-
- if ((fd = open("/dev/device-mapper", O_RDWR)) < 0 ) {
- printf("Cannot open device-mapper\n");
- goto errout;
- }
-
- io = (struct dm_ioctl *) buffer;
-
- ioctl_init(io, DM_CRYPT_BUF_SIZE, name, 0);
- if (ioctl(fd, DM_DEV_REMOVE, io)) {
- printf("Cannot remove dm-crypt device\n");
- goto errout;
- }
-
- /* We made it here with no errors. Woot! */
- retval = 0;
-
-errout:
- close(fd); /* If fd is <0 from a failed open call, it's safe to just ignore the close error */
-
- return retval;
-
-}
-
-static void pbkdf2(char *passwd, unsigned char *salt, unsigned char *ikey)
-{
- /* Turn the password into a key and IV that can decrypt the master key */
- PKCS5_PBKDF2_HMAC_SHA1(passwd, strlen(passwd), salt, SALT_LEN,
- HASH_COUNT, KEY_LEN_BYTES+IV_LEN_BYTES, ikey);
-}
-
-static int decrypt_master_key(char *passwd, unsigned char *salt,
- unsigned char *encrypted_master_key,
- unsigned char *decrypted_master_key)
-{
-#ifdef TW_INCLUDE_CRYPTO_SAMSUNG
- if (using_samsung_encryption) {
- property_set("rw.km_fips_status", "ready");
- return decrypt_EDK((dek_t*)decrypted_master_key, (edk_payload_t*)encrypted_master_key, passwd);
- }
-#endif
-
- unsigned char ikey[32+32] = { 0 }; /* Big enough to hold a 256 bit key and 256 bit IV */
- EVP_CIPHER_CTX d_ctx;
- int decrypted_len, final_len;
-
- /* Turn the password into a key and IV that can decrypt the master key */
- pbkdf2(passwd, salt, ikey);
-
- /* Initialize the decryption engine */
- if (! EVP_DecryptInit(&d_ctx, EVP_aes_128_cbc(), ikey, ikey+KEY_LEN_BYTES)) {
- return -1;
- }
- EVP_CIPHER_CTX_set_padding(&d_ctx, 0); /* Turn off padding as our data is block aligned */
- /* Decrypt the master key */
- if (! EVP_DecryptUpdate(&d_ctx, decrypted_master_key, &decrypted_len,
- encrypted_master_key, KEY_LEN_BYTES)) {
- return -1;
- }
- if (! EVP_DecryptFinal(&d_ctx, decrypted_master_key + decrypted_len, &final_len)) {
- return -1;
- }
-
- if (decrypted_len + final_len != KEY_LEN_BYTES) {
- return -1;
- } else {
- return 0;
- }
-}
-
-static int get_orig_mount_parms(
- const char *mount_point, char *fs_type, char *real_blkdev,
- unsigned long *mnt_flags, char *fs_options)
-{
- char mount_point2[PROPERTY_VALUE_MAX];
- char fs_flags[PROPERTY_VALUE_MAX];
-
- property_get("ro.crypto.fs_type", fs_type, "");
- property_get("ro.crypto.fs_real_blkdev", real_blkdev, "");
- property_get("ro.crypto.fs_mnt_point", mount_point2, "");
- property_get("ro.crypto.fs_options", fs_options, "");
- property_get("ro.crypto.fs_flags", fs_flags, "");
- *mnt_flags = strtol(fs_flags, 0, 0);
-
- if (strcmp(mount_point, mount_point2)) {
- /* Consistency check. These should match. If not, something odd happened. */
- return -1;
- }
-
- return 0;
-}
-
-static int get_orig_mount_parms_sd(
- const char *mount_point, char *fs_type, char *real_blkdev)
-{
- char mount_point2[PROPERTY_VALUE_MAX];
-
- property_get("ro.crypto.sd_fs_type", fs_type, "");
- property_get("ro.crypto.sd_fs_real_blkdev", real_blkdev, "");
- property_get("ro.crypto.sd_fs_mnt_point", mount_point2, "");
-
- if (strcmp(mount_point, mount_point2)) {
- /* Consistency check. These should match. If not, something odd happened. */
- return -1;
- }
-
- return 0;
-}
-
-static int test_mount_encrypted_fs(
- char *passwd, char *mount_point, char *label, char *crypto_blkdev)
-{
- struct crypt_mnt_ftr crypt_ftr;
- /* Allocate enough space for a 256 bit key, but we may use less */
- unsigned char encrypted_master_key[256], decrypted_master_key[32];
- unsigned char salt[SALT_LEN];
- char real_blkdev[MAXPATHLEN];
- char fs_type[PROPERTY_VALUE_MAX];
- char fs_options[PROPERTY_VALUE_MAX];
- char tmp_mount_point[MAXPATHLEN];
- unsigned long mnt_flags;
- unsigned int orig_failed_decrypt_count;
- char encrypted_state[PROPERTY_VALUE_MAX];
- int rc;
-
- property_get("ro.crypto.state", encrypted_state, "");
- if ( master_key_saved || strcmp(encrypted_state, "encrypted") ) {
- printf("encrypted fs already validated or not running with encryption, aborting %s\n", encrypted_state);
- return -1;
- }
-
- if (get_orig_mount_parms(mount_point, fs_type, real_blkdev, &mnt_flags, fs_options)) {
- printf("Error reading original mount parms for mount point %s\n", mount_point);
- return -1;
- }
-
- if (get_crypt_ftr_and_key(real_blkdev, &crypt_ftr, encrypted_master_key, salt)) {
- printf("Error getting crypt footer and key\n");
- return -1;
- }
-
- //printf("crypt_ftr->fs_size = %lld\n", crypt_ftr.fs_size);
- orig_failed_decrypt_count = crypt_ftr.failed_decrypt_count;
-
- if (! (crypt_ftr.flags & CRYPT_MNT_KEY_UNENCRYPTED) ) {
- decrypt_master_key(passwd, salt, encrypted_master_key, decrypted_master_key);
- }
-
- if (create_crypto_blk_dev(&crypt_ftr, decrypted_master_key, real_blkdev,
- crypto_blkdev, label)) {
- printf("Error creating decrypted block device\n");
- return -1;
- }
-
- /* If init detects an encrypted filesystme, it writes a file for each such
- * encrypted fs into the tmpfs /data filesystem, and then the framework finds those
- * files and passes that data to me */
- /* Create a tmp mount point to try mounting the decryptd fs
- * Since we're here, the mount_point should be a tmpfs filesystem, so make
- * a directory in it to test mount the decrypted filesystem.
- */
- sprintf(tmp_mount_point, "%s/tmp_mnt", mount_point);
- mkdir(tmp_mount_point, 0755);
- if ( mount(crypto_blkdev, tmp_mount_point, fs_type, MS_RDONLY, "") ) {
- printf("Error temp mounting decrypted block device\n");
- delete_crypto_blk_dev(label);
- crypt_ftr.failed_decrypt_count++;
- } else {
- /* Success, so just umount and we'll mount it properly when we restart
- * the framework.
- */
- umount(tmp_mount_point);
- crypt_ftr.failed_decrypt_count = 0;
- }
-
- rmdir(tmp_mount_point);
-
- if (crypt_ftr.failed_decrypt_count) {
- /* We failed to mount the device, so return an error */
- rc = crypt_ftr.failed_decrypt_count;
-
- } else {
- /* Woot! Success! Save the name of the crypto block device
- * so we can mount it when restarting the framework.
- */
- property_set("ro.crypto.fs_crypto_blkdev", crypto_blkdev);
-
- /* Also save a the master key so we can reencrypted the key
- * the key when we want to change the password on it.
- */
- memcpy(saved_master_key, decrypted_master_key, sizeof(saved_master_key));
- saved_data_blkdev = strdup(real_blkdev);
- saved_mount_point = strdup(mount_point);
- master_key_saved = 1;
- rc = 0;
- }
-
- return rc;
-}
-
-static int test_mount_encrypted_fs_sd(
- const char *passwd, const char *mount_point, const char *label)
-{
- char real_blkdev[MAXPATHLEN];
- char crypto_blkdev[MAXPATHLEN];
- char tmp_mount_point[MAXPATHLEN];
- char encrypted_state[PROPERTY_VALUE_MAX];
- char fs_type[PROPERTY_VALUE_MAX];
- int rc;
-
- property_get("ro.crypto.state", encrypted_state, "");
- if ( !master_key_saved || strcmp(encrypted_state, "encrypted") ) {
- printf("encrypted fs not yet validated or not running with encryption, aborting\n");
- return -1;
- }
-
- if (get_orig_mount_parms_sd(mount_point, fs_type, real_blkdev)) {
- printf("Error reading original mount parms for mount point %s\n", mount_point);
- return -1;
- }
-
- rc = cryptfs_setup_volume(label, real_blkdev, crypto_blkdev);
- if(rc){
- printf("Error setting up cryptfs volume %s\n", real_blkdev);
- return -1;
- }
-
- sprintf(tmp_mount_point, "%s/tmp_mnt", mount_point);
- mkdir(tmp_mount_point, 0755);
- if ( mount(crypto_blkdev, tmp_mount_point, fs_type, MS_RDONLY, "") ) {
- printf("Error temp mounting decrypted block device\n");
- delete_crypto_blk_dev(label);
- } else {
- /* Success, so just umount and we'll mount it properly when we restart
- * the framework.
- */
- umount(tmp_mount_point);
-
- property_set("ro.crypto.sd_fs_crypto_blkdev", crypto_blkdev);
- }
-
- rmdir(tmp_mount_point);
-
- return rc;
-}
-
-/*
- * Called by vold when it's asked to mount an encrypted, nonremovable volume.
- * Setup a dm-crypt mapping, use the saved master key from
- * setting up the /data mapping, and return the new device path.
- */
-int cryptfs_setup_volume(const char *label, const char *real_blkdev, char *crypto_blkdev)
-{
- struct crypt_mnt_ftr sd_crypt_ftr;
- unsigned char key[256], salt[32];
- struct stat statbuf;
- int nr_sec, fd, rc;
-
- /* Just want the footer, but gotta get it all */
- get_crypt_ftr_and_key(saved_data_blkdev, &sd_crypt_ftr, key, salt);
-
- /* Update the fs_size field to be the size of the volume */
- fd = open(real_blkdev, O_RDONLY);
- nr_sec = get_blkdev_size(fd);
- close(fd);
- if (nr_sec == 0) {
- SLOGE("Cannot get size of volume %s\n", real_blkdev);
- return -1;
- }
-
-#ifdef TW_INCLUDE_CRYPTO_SAMSUNG
- if(using_samsung_encryption) {
- if(!access("/efs/essiv", R_OK)){
- strcpy(sd_crypt_ftr.crypto_type_name, "aes-cbc-plain:sha1");
- }
- else if(!access("/efs/cryptprop_essiv", R_OK)){
- strcpy(sd_crypt_ftr.crypto_type_name, "aes-cbc-essiv:sha256");
- }
- }
-#endif
-
- sd_crypt_ftr.fs_size = nr_sec;
- rc = create_crypto_blk_dev(
- &sd_crypt_ftr, saved_master_key, real_blkdev, crypto_blkdev, label);
-
- stat(crypto_blkdev, &statbuf);
-
- return rc;
-}
-
-int cryptfs_crypto_complete(void)
-{
- return -1;
-}
-
-int cryptfs_check_footer(void)
-{
- int rc = -1;
- char fs_type[PROPERTY_VALUE_MAX];
- char real_blkdev[MAXPATHLEN];
- char fs_options[PROPERTY_VALUE_MAX];
- unsigned long mnt_flags;
- struct crypt_mnt_ftr crypt_ftr;
- /* Allocate enough space for a 256 bit key, but we may use less */
- unsigned char encrypted_master_key[256];
- unsigned char salt[SALT_LEN];
-
- if (get_orig_mount_parms(DATA_MNT_POINT, fs_type, real_blkdev, &mnt_flags, fs_options)) {
- printf("Error reading original mount parms for mount point %s\n", DATA_MNT_POINT);
- return rc;
- }
-
- rc = get_crypt_ftr_and_key(real_blkdev, &crypt_ftr, encrypted_master_key, salt);
-
- return rc;
-}
-
-int cryptfs_check_passwd(const char *passwd)
-{
- char pwbuf[256];
- char crypto_blkdev_data[MAXPATHLEN];
- int rc = -1;
-
- strcpy(pwbuf, passwd);
- rc = test_mount_encrypted_fs(pwbuf, DATA_MNT_POINT, "userdata", crypto_blkdev_data);
-
-#ifdef TW_INCLUDE_CRYPTO_SAMSUNG
- if(using_samsung_encryption) {
-
- int rc2 = 1;
-#ifndef RECOVERY_SDCARD_ON_DATA
-#ifdef TW_INTERNAL_STORAGE_PATH
- // internal storage for non data/media devices
- if(!rc) {
- strcpy(pwbuf, passwd);
- rc2 = test_mount_encrypted_fs_sd(
- pwbuf, EXPAND(TW_INTERNAL_STORAGE_PATH),
- EXPAND(TW_INTERNAL_STORAGE_MOUNT_POINT));
- }
-#endif
-#endif
-#ifdef TW_EXTERNAL_STORAGE_PATH
- printf("Temp mounting /data\n");
- // mount data so mount_ecryptfs_drive can access edk in /data/system/
- rc2 = mount(crypto_blkdev_data, DATA_MNT_POINT, CRYPTO_FS_TYPE, MS_RDONLY, "");
- // external sd
- char decrypt_external[256], external_blkdev[256];
- property_get("ro.crypto.external_encrypted", decrypt_external, "0");
- // Mount the external storage as ecryptfs so that ecryptfs can act as a pass-through
- if (!rc2 && strcmp(decrypt_external, "1") == 0) {
- printf("Mounting external with ecryptfs...\n");
- strcpy(pwbuf, passwd);
- rc2 = mount_ecryptfs_drive(
- pwbuf, EXPAND(TW_EXTERNAL_STORAGE_PATH),
- EXPAND(TW_EXTERNAL_STORAGE_PATH), 0);
- if (rc2 == 0)
- property_set("ro.crypto.external_use_ecryptfs", "1");
- else
- property_set("ro.crypto.external_use_ecryptfs", "0");
- } else {
- printf("Unable to mount external storage with ecryptfs.\n");
- umount(EXPAND(TW_EXTERNAL_STORAGE_PATH));
- }
- umount(DATA_MNT_POINT);
- }
-#endif // #ifdef TW_EXTERNAL_STORAGE_PATH
-#endif // #ifdef TW_INCLUDE_CRYPTO_SAMSUNG
- return rc;
-}
diff --git a/crypto/ics/cryptfs.h b/crypto/ics/cryptfs.h
deleted file mode 100644
index 8c8037659..000000000
--- a/crypto/ics/cryptfs.h
+++ /dev/null
@@ -1,86 +0,0 @@
-/*
- * Copyright (C) 2010 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/* This structure starts 16,384 bytes before the end of a hardware
- * partition that is encrypted.
- * Immediately following this structure is the encrypted key.
- * The keysize field tells how long the key is, in bytes.
- * Then there is 32 bytes of padding,
- * Finally there is the salt used with the user password.
- * The salt is fixed at 16 bytes long.
- * Obviously, the filesystem does not include the last 16 kbytes
- * of the partition.
- */
-
-#ifndef __CRYPTFS_H__
-#define __CRYPTFS_H__
-
-#ifdef TW_INCLUDE_CRYPTO_SAMSUNG
-#include "../libcrypt_samsung/include/libcrypt_samsung.h"
-#endif
-
-#define CRYPT_FOOTER_OFFSET 0x4000
-
-#define MAX_CRYPTO_TYPE_NAME_LEN 64
-
-#define SALT_LEN 16
-#define KEY_TO_SALT_PADDING 32
-
-/* definitions of flags in the structure below */
-#define CRYPT_MNT_KEY_UNENCRYPTED 0x1 /* The key for the partition is not encrypted. */
-#define CRYPT_ENCRYPTION_IN_PROGRESS 0x2 /* Set when starting encryption,
- * clear when done before rebooting */
-
-#ifdef TW_INCLUDE_CRYPTO_SAMSUNG
-#define CRYPT_MNT_MAGIC_SAMSUNG 0xD0B5B1C5
-#endif
-#define CRYPT_MNT_MAGIC 0xD0B5B1C4
-
-#define __le32 unsigned int
-#define __le16 unsigned short int
-
-#pragma pack(1)
-
-struct crypt_mnt_ftr {
- __le32 magic; /* See above */
- __le16 major_version;
- __le16 minor_version;
- __le32 ftr_size; /* in bytes, not including key following */
- __le32 flags; /* See above */
- __le32 keysize; /* in bytes */
- __le32 spare1; /* ignored */
- __le64 fs_size; /* Size of the encrypted fs, in 512 byte sectors */
- __le32 failed_decrypt_count; /* count of # of failed attempts to decrypt and
- mount, set to 0 on successful mount */
- char crypto_type_name[MAX_CRYPTO_TYPE_NAME_LEN]; /* The type of encryption
- needed to decrypt this
- partition, null terminated */
-};
-
-#pragma pack()
-
-
-#ifdef __cplusplus
-extern "C" {
-#endif
- int cryptfs_check_footer(void);
- int cryptfs_check_passwd(const char *pw);
-#ifdef __cplusplus
-}
-#endif
-
-#endif // __CRYPTFS_H__
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-03 23:54:36 +0100