This document discusses how to build and use SQLCipher, an SQLite extension that provides encryption of database files. It describes compiling SQLCipher and OpenSSL from source, configuring an Xcode project to include the libraries, setting an encryption key for databases, and provides links for further information.

1. 5
SQLite
Taro Matsuzawa aka. btm (@smellman)
sumaben@kanto #11 Lightning Talk

2. SQLite
• iPhone SQL
•
• Firefox

3. • JB
• Blob

4. sqlcipher
• SQLite
• SQLite
• iPhone

5. 1
$ sudo mkdir -p /opt/smartphone/lib
$ sudo chown -R btm:staff /opt/smartphone
$ cd /opt/smartphone/lib/
$ git clone git://github.com/sjlombardo/sqlcipher.git
$ curl -O ftp://ftp.infoscience.co.jp/pub/Crypto/SSL/openssl/source/openssl-1.0.0a.tar.gz
$ git clone git://github.com/sjlombardo/openssl-xcode.git
$ tar zxf openssl-1.0.0a.tar.gz
$ cp -fr openssl-xcode/openssl.xcodeproj openssl-1.0.0a/
$ mv openssl-1.0.0a openssl

6. 2
• XCode
•
• SQLCIPHER_SRC SQLCipher
• SQLCIPHER_SRC:/opt/smartphone/lib/sqlcipher
• OPENSSL_SRC OpenSSL
• OPENSSL_SRC:/opt/smartphone/lib/openssl

7. 3
• XCode ->
• OpenSSL openssl.xcodeproj
•
• SQLCipher sqlcipher.xcodeproj

8. 4
• SQLCipher OpenSSL
• sqlcipher.xcodeproj ->
• SQLCIPHER_SRC
• openssl.xcodeproj ->
• OPENSSL_SRC

9. 5
• XCode ->
"SQLCipherTest"
• +
• OpenSSL crypto SQLCipher sqlcipher
•
•
• $(SQLCIPHER_SRC) $(OPENSSL_SRC)

10. 6
• sqlcipher.xcodeproj libsqlcipher.a
• openssl.xcodeproj libcrypto.a
• SQLITE_HAS_CODEC=1

11. • SQL
• PRAGMA key = 'default_key';
• sqlcipher
•
• FMDatabase
• FMDatabase setKey

12. ! NSString* key = @"TaroMatsuzawaIsDead";
! NSString* newKey = [key stringByAppendingString:
[[UIDevice currentDevice] uniqueIdentifier]];
! if (![rootViewController.encdb setKey:key])
! ! NSLog(@"> Could not set key.");

13. URL
• sqlcipher
• http://sqlcipher.net/
• sqlcipher document
• http://sqlcipher.net/documentation
• openssl-xcode
• https://github.com/sjlombardo/openssl-xcode
• FMDatabase
• https://github.com/ccgus/fmdb

14. •
$ sudo port install openssl
$ mkdir -p ~/develop/sqlcipher
$ cd ~/develop/sqlcipher
$ git clone git://github.com/sjlombardo/sqlcipher.git
$ cd sqlcipher
$ ./configure CFLAGS="-DSQLITE_HAS_CODEC" LDFLAGS="/opt/local/lib/libcrypto.a"
$ make
$ ~/develop/sqlcipher/sqlcipher/sqlite3 sqlite3.db
SQLite version 3.7.2
Enter ".help" for instructions
Enter SQL statements terminated with a ";"
sqlite> .read /Users/btm/develop/( )/schema.sql
sqlite> PRAGMA key = 'default_key';