% cd ~/Documents/code//命令行cd到你要下載的目錄 
% curl -o openssl-1.0.0e.tar.gz http://www.openssl.org/source/openssl-1.0.0e.tar.gz//下載 
% tar xzf openssl-1.0.0e.tar.gz //解壓縮 

% cd ~/Documents/code/SQLCipherApp 
% git clone https://github.com/sqlcipher/sqlcipher.git 

% cd ~/Documents/code/SQLCipherApp 
% git clone https://github.com/sqlcipher/openssl-xcode.git 

-(BOOL) openDatabase 
{ 
  if (sqlite3_open([[self dataFilePath:DB_NAME] UTF8String], &_database) == SQLITE_OK) { 
    const char* key = [@",66c9a^N" UTF8String];  //數(shù)據(jù)庫文件加密 
    sqlite3_key(_database, key, (int)strlen(key));   //數(shù)據(jù)庫文件加密 
    NSLog(@"\n===數(shù)據(jù)庫打開or創(chuàng)建成功===\n"); 
    return YES; 
  }else{ 
    NSLog(@"\n===數(shù)據(jù)庫打開失敗===\n"); 
  } 
  return NO; 
} 
DB_NAME 是定義的 數(shù)據(jù)庫文件名的宏",66c9a^N" 是你要設(shè)置的數(shù)據(jù)庫密鑰 sqlite3_key(_database, key, (int)strlen(key));這個方法里就包含了 加解密的過程！～是不是非常簡單呢嘿嘿接下來 附上自己的工程 源代碼有需要的童鞋，就自己看看吧！里面有詳細(xì)的注釋， 也簡單的實現(xiàn)了幾個方便數(shù)據(jù)庫操作的函數(shù)
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#import <Foundation/Foundation.h> 
#import <sqlite3.h> 
#define DB_NAME @"xxxxxxx.db"              //數(shù)據(jù)庫文件名 
@interface SqliteHelp :NSObject 
@propertysqlite3 *database;            //數(shù)據(jù)庫句柄 
@propertysqlite3_stmt *statement;         //sql語句 
@property char *errmsg; 
-(BOOL) openDatabase;               //打開數(shù)據(jù)庫 這個函數(shù)一般不直接調(diào)用，而是直接調(diào)用對數(shù)據(jù)庫操作的函數(shù) 
-(void) closeDataBase;               //關(guān)閉數(shù)據(jù)庫 這個函數(shù)一般不直接調(diào)用，而是直接調(diào)用對數(shù)據(jù)庫操作的函數(shù) 
-(NSString *) dataFilePath:(NSString *)fileName;  //返回數(shù)據(jù)庫存儲路徑 這個函數(shù)一般不直接調(diào)用，而是直接調(diào)用對數(shù)據(jù)庫操作的函數(shù) 
/** 
 * 說明： 給定一個SQL語句 插入或者編輯一個數(shù)據(jù) 
 * 語句格式 ： 
 * 插入：［insert （文件名）values(data1, data2, data3, ...);］ 
 * 編輯：［update（文件名） set (字段名)=(修改后的數(shù)據(jù)) where（字段名）=（修改前的數(shù)據(jù)）;］ 
 */ 
-(BOOL) insertOrUpdateData:(NSString *)sql; 
      
-(NSMutableArray *) getUsers;           //以數(shù)組的形勢，獲取所有用戶 
-(int) getCountOfDatabase;             //獲取當(dāng)前數(shù)據(jù)庫的數(shù)量 
@end 
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#import "SqliteHelp.h" 
@implementation SqliteHelp 
@synthesize database =_database; 
@synthesize statement =_statement; 
@synthesize errmsg =_errmsg; 
-(BOOL) openDatabase 
{ 
  if (sqlite3_open([[selfdataFilePath:DB_NAME]UTF8String], &_database) ==SQLITE_OK) { 
    constchar* key = [@",66c9a^N"UTF8String];  //數(shù)據(jù)庫文件加密 
    sqlite3_key(_database, key, (int)strlen(key));   //數(shù)據(jù)庫文件加密 
    NSLog(@"\n===數(shù)據(jù)庫打開or創(chuàng)建成功===\n"); 
    returnYES; 
  }else{ 
    NSLog(@"\n===數(shù)據(jù)庫打開失敗===\n"); 
  } 
  return NO; 
   
} 
-(void) closeDataBase 
{ 
  sqlite3_close(_database); 
} 
-(NSString *) dataFilePath:(NSString *)fileName 
{ 
  NSArray *paths =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, 
                            NSUserDomainMask, 
                            YES); 
  NSString *documentsDirectory = [pathsobjectAtIndex:0]; 
  return [documentsDirectorystringByAppendingPathComponent:fileName]; 
} 
-(BOOL) insertOrUpdateData:(NSString *)sql 
{ 
  if ([selfopenDatabase]) { 
    if (sqlite3_exec(_database, [sqlUTF8String],nil, &_statement, &_errmsg) !=SQLITE_OK) { 
      NSLog(@"\n===插入數(shù)據(jù)失敗===\n"); 
      NSLog(@"\n==sql Error:%s",_errmsg); 
      returnNO; 
    }else{ 
      NSLog(@"\n===插入數(shù)據(jù)成功===\n"); 
      returnYES; 
    } 
     
  } 
  sqlite3_close(_database); 
  return NO; 
} 
-(NSMutableArray *) seeDatabase 
{ 
  NSMutableArray *users = [[NSMutableArrayalloc]init]; 
  NSString *sql = [NSStringstringWithFormat:@"SELECT * FROM t_relive"]; 
  if ([selfopenDatabase]) { 
    if (sqlite3_prepare_v2(_database, [sqlUTF8String], -1, &_statement,nil) ==SQLITE_OK) { 
      while (sqlite3_step(_statement) ==SQLITE_ROW ) { 
//        User *user = [[Question alloc] init]; 
        int name =sqlite3_column_int(_statement,0); 
//        [user setName:[NSString stringWithUTF8String:name]]; 
        int index =sqlite3_column_int(_statement,1); 
//        [user setId:[[NSString stringWithUTF8String:index] intValue]]; 
//        [users addObject: user]; 
        NSLog(@"%i=%i",name,index); 
      } 
      sqlite3_finalize(_statement); 
    } 
  } 
  sqlite3_close(_database); 
  return users; 
} 
-(int) getCountOfDatabase 
{ 
  int count =0; 
  NSString *sql = [NSStringstringWithFormat:@"SELECT * FROM User"]; 
  if ([selfopenDatabase]) { 
    if (sqlite3_prepare_v2(_database, [sqlUTF8String], -1, &_statement,nil) ==SQLITE_OK) { 
      while (sqlite3_step(_statement) ==SQLITE_ROW) { 
        count ++; 
      } 
      sqlite3_finalize(_statement); 
    } 
  } 
  return count; 
} 
@end 
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這里實現(xiàn) 輸入sql表 生成數(shù)據(jù)庫，可以在控制臺查錯 
#import "AppDelegate.h" 
#import "SqliteHelp.h" 
@implementation AppDelegate 
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification 
{ 
  // Insert code here to initialize your application 
  [selfbuildDatabase]; 
  [selfinsertDatabase]; 
} 
- (void) buildDatabase 
{ 
  NSError *error; 
  NSString *textFile = [NSStringstringWithContentsOfFile:[[NSBundlemainBundle]pathForResource:@"schema.sqlite.tables.sql"ofType:nil]encoding:NSUTF8StringEncodingerror:&error]; 
  if (textFile ==nil) { 
    NSLog(@"Error reading text file. %@", [errorlocalizedFailureReason]); 
  } 
  NSArray *row = [textFilecomponentsSeparatedByString:@";"]; 
  NSInteger count = [rowcount]; 
  SqliteHelp *t = [SqliteHelpnew]; 
  for (int i=0; i<count; i++) { 
    NSString *tempString = [NSStringstringWithFormat:@"%@;",row[i]]; 
    NSLog(@"%@",tempString); 
    [tinsertOrUpdateData:tempString]; 
  } 
   
   
   
} 
-(void) insertDatabase 
{ 
  NSError *error; 
  NSString *textFile = [NSStringstringWithContentsOfFile:[[NSBundlemainBundle]pathForResource:@"schema.sqlite.data.sql"ofType:nil]encoding:NSUTF8StringEncodingerror:&error]; 
  if (textFile ==nil) { 
    NSLog(@"Error reading text file. %@", [errorlocalizedFailureReason]); 
  } 
  NSArray *row = [textFilecomponentsSeparatedByString:@";"]; 
  NSInteger count = [rowcount]; 
  SqliteHelp *t = [SqliteHelpnew]; 
  for (int i=0; i<count; i++) { 
    NSString *tempString = [NSStringstringWithFormat:@"%@;",row[i]]; 
    NSLog(@"%@",tempString); 
    [tinsertOrUpdateData:tempString]; 
  } 
   
} 
@end