一、下载代码
sqlcipher赖openssl库，首先下载openssl:
[fulinux@ubuntu ~]$ git clone https://github.com/openssl/openssl.git
下载sqlcipher:
网站：http://git.oschina.net/fulinux/sqlcipher.git或者https://github.com/sqlcipher/sqlcipher.git
[fulinux@ubuntu ~]$ git clone http://git.oschina.net/fulinux/sqlcipher.git
或者
[fulinux@ubuntu ~]$ git clone https://github.com/sqlcipher/sqlcipher.git
二、编译
编译openssl:
[fulinux@ubuntu openssl]$ ./config
[fulinux@ubuntu openssl]$ sudo make install
编译sqlcipher:
[fulinux@ubuntu sqlcipher]$mkdir install
[fulinux@ubuntu sqlcipher]$./configure --enable-tempstore=yes CFLAGS="-DSQLITE_HAS_CODEC" LDFLAGS="-lcrypto" --prefix=$PWD/install && make install
假设遇到编译问题，请checkout到发行版本号
[fulinux@ubuntu sqlcipher]$git checkout v3.1.0
编译成功后。project根文件夹的下install/bin/中有一个sqlcipher运行文件,为了方便复制到project根文件夹下：
[fulinux@ubuntu sqlcipher]$ ls install/bin/
sqlcipher
[fulinux@ubuntu sqlcipher]$ cp install/bin/sqlcipher .
三、測试
新建一个数据库：
[fulinux@ubuntu sqlcipher]$ ./sqlcipher test.db
SQLCipher version 3.8.4.3 2014-04-03 16:53:12
Enter ".help" for instructions
Enter SQL statements terminated with a ";"
sqlite> PRAGMA KEY = '12345';
sqlite> create table film (number,name);
sqlite> insert into film values (1,'aaa');
sqlite> insert into film values (2,'bbb');
sqlite> select * from film;
1|aaa
2|bbb
sqlite> .quit
打开上面创建的数据库：
[fulinux@ubuntu sqlcipher]$ ./sqlcipher test.db
SQLCipher version 3.8.4.3 2014-04-03 16:53:12
Enter ".help" for instructions
Enter SQL statements terminated with a ";"
sqlite> PRAGMA KEY = '12345';
sqlite> .schema
CREATE TABLE film (number,name);
sqlite> select * from film;
1|aaa
2|bbb
sqlite>
错误測试：
[fulinux@ubuntu sqlcipher]$ ./sqlcipher test.db
SQLCipher version 3.8.4.3 2014-04-03 16:53:12
Enter ".help" for instructions
Enter SQL statements terminated with a ";"
sqlite> select * from film;
Error: file is encrypted or is not a database
sqlite>
四、加密前后測试
用sqlite3查看数据：
[fulinux@ubuntu sqlite]$ sqlite3 test.db
SQLite version 3.8.5 2014-06-04 14:06:34
Enter ".help" for usage hints.
sqlite> select * from test;
1|hxl
2|sqlite
3|test
4|for
5|linux
sqlite>
用vim -b test.db，然后用xxd把文件转换成十六进制格式
:%!xxd
能够看到数据是没有加密的，显而易见：
00007d0: 0000 0805 0300 176c 696e 7578 0604 0300 .......linux....
00007e0: 1366 6f72 0703 0300 1574 6573 7409 0203 .for.....test...
00007f0: 0019 7371 6c69 7465 0601 0300 1368 786c ..sqlite.....hxl
再把这个没有加密的test.db数据库文件通过sqlcipher转换为加密格式的。
1、用sqlcipher或者sqlite打开未加密的test.db文件：
[fulinux@ubuntu sqlcipher]$ ./sqlcipher test.db
SQLCipher version 3.8.4.3 2014-04-03 16:53:12
Enter ".help" for instructions
Enter SQL statements terminated with a ";"
sqlite> select * from test;
1|hxl
2|sqlite
3|test
4|for
5|linux
sqlite>
2、把数据导成sql格式文件：
sqlite> .output test.sql
sqlite> .dump
sqlite> .exit
3、结合test.sql文件生成一个加密的数据库文件test1.db：
[fulinux@ubuntu sqlcipher]$ ./sqlcipher test1.db
SQLCipher version 3.8.4.3 2014-04-03 16:53:12
Enter ".help" for instructions
Enter SQL statements terminated with a ";"
sqlite> PRAGMA key = 'test';
sqlite> .read test.sql
sqlite>
sqlite> select * from test;
1|hxl
2|sqlite
3|test
4|for
5|linux
sqlite> .exit
4、导入成功后，我们在用vim -b打开test1.db数据库文件。能够觉得你看到的基本上都是乱码：
00001b0: 913c 52e4 5809 83b9 153a 8d5d 4b84 9715 .<R.X....:.]K...
00001c0: a552 f8fb 9e3f 9637 4c9a 4b00 2259 a95b .R...?.7L.K."Y.[
00001d0: 91d6 95da ce34 f9f2 5b05 2bea 439b 7cae .....4..[.+.C.|.
00001e0: 1e60 333f 5323 21a9 989b a08a ad4f ea78 .`3?S#!......O.x
五、C代码測试
编辑一个C代码文件test.c。代码能够：
/*********************************************************************************
* Copyright: (C) 2014 EAST
* All rights reserved.
*
* Filename: test.c
* Description: This file
*
* Version: 1.0.0(07/25/2014)
* Author: fulinux <fulinux@sina.com>
* ChangeLog: 1, Release initial version on "07/25/2014 05:15:05 PM"
*
********************************************************************************/ #include <stdio.h>
#include <stdlib.h>
#include <sqlite3.h> static int callback(void *notused, int argc, char **argv, char **azcolname)
{
int i;
for(i = 0; i < argc; i++){
printf ("%s = %s\n", azcolname[i], argv[i]?argv[i]:"NULL");
} printf ("\n");
return 0;
} /********************************************************************************
* Description:
* Input Args:
* Output Args:
* Return Value:
********************************************************************************/
int main (int argc, char **argv)
{
sqlite3 *db;
char *zerrmsg = 0;
int rc; if(argc != 3){
fprintf(stderr, "Usage: %s DATABASE SQL-STATEMENT\n", argv[0]);
exit(0);
} rc = sqlite3_open(argv[1], &db);
if(rc){
fprintf(stderr, "Can't open database: %s\n", sqlite3_errmsg(db));
return 1;
} sqlite3_key(db, "test", 4);
rc = sqlite3_exec(db, argv[2], callback, 0, &zerrmsg);
if(rc != SQLITE_OK){
fprintf(stderr, "SQL error: %s\n", zerrmsg);
sqlite3_free(zerrmsg);
} sqlite3_close(db);
return 0;
} /* ----- End of main() ----- */
代码上面的代码能够在这里下载：
[fulinux@ubuntu ~]$ git clone http://git.oschina.net/fulinux/jupiter.git
[fulinux@ubuntu jupiter]$ git checkout sqlcipher
编译test.c文件，由于库和头文件都在/home/fulinux/sqlcipher/install文件夹下，所以以下參数例如以下：
[fulinux@ubuntu jupiter]$ gcc -g test.c -o test -lsqlcipher -L /home/fulinux/sqlcipher/install/lib/ -I /home/fulinux/sqlcipher/install/include/sqlcipher/
运行測试程序：
[fulinux@ubuntu jupiter]$./test test1.db "select * from test;"
id = 1
value = hxl
id = 2
value = sqlite
id = 3
value = test
id = 4
value = for
id = 5
value = linux
相关网址：http://sqlcipher.net/sqlcipher-api/
author: fulinux
e-mail:fulinux@sina.com
blog: blog.csdn.net/fulinus
版权声明：本文博主原创文章，博客，未经同意不得转载。