iPhone App with compiled OpenSSL 1.0.0a Library

This is a tutorial for using self-compiled builds of the OpenSSL-library on the iPhone. You can build apps with XCode and the official SDK from Apple with this. I also made a small example-app for using the libraries with XCode and the iPhone/iPhone-Simulator. You can also download the precompiled OpenSSL-library (1.0.0a).

This tutorial works with OpenSSL 1.0.0a and Xcode 3.2.3 with iOS 4.

You can find the tutorial for OpenSSL 0.9.8 at http://www.x2on.de/2010/02/01/tutorial-iphone-app-with-compiled-openssl-library/

You can get the Source of the example app with compiled OpenSSL at http://github.com/x2on/OpenSSL-for-iPhone

Create OpenSSL Libary:

Download OpenSSL SourcecodeChange in crypto/ui/ui_openssl.c

static volatile sig_atomic_t intr_signal;

to

static volatile int intr_signal;

for preventing building error

Build OpenSSL for i368 iPhoneSimulator:

mkdir ssllibs cd openssl-1.0.0a mkdir openssl_armv6 openssl_armv7 openssl_i386 ./configure BSD-generic32 --openssldir=/Users/<username>/openssl-1.0.0a/openssl_i386

Edit Makefile:

Change CC = cc to:

CC= /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc -arch i386

Add as first item to CFLAG:

-isysroot /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.0.sdk

Build it:

make make install

Your libcrypto.a and libssl.a are in the folder openssl_i368/lib

Build OpenSSL for armv6 iOS:

mv openssl_i386 ../ssllibs make clean ./configure BSD-generic32 --openssldir=/Users/<username>/openssl-1.0.0a/openssl_armv6

Edit Makefile:

Change CC = cc to:

CC= /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc -arch armv6

Add as first item to CFLAG:

-isysroot /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.0.sdk

Build it:

make make install

Your libcrypto.a and libssl.a are in the folder openssl_armv6/lib

Build OpenSSL for armv7 iOS:

mv openssl_armv6 ../ssllibs make clean ./configure BSD-generic32 --openssldir=/Users/<username>/openssl-1.0.0a/openssl_armv7

Edit Makefile:

Change CC = cc to:

CC= /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc -arch armv7

Add as first item to CFLAG:

-isysroot /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.0.sdk

Build it:

make make install

Your libcrypto.a and libssl.a are in the folder openssl_armv7/lib

Create universal libs:

cp -r openssl_armv7/include ../ssllibs/ lipo -create ../ssllibs/openssl_i386/lib/libcrypto.a ../ssllibs/openssl_armv6/lib/libcrypto.a openssl_armv7/lib/libcrypto.a -output ../ssllibs/libcrypto.a lipo -create ../ssllibs/openssl_i386/lib/libssl.a ../ssllibs/openssl_armv6/lib/libssl.a openssl_armv7/lib/libssl.a -output ../ssllibs/libssl.a

Edit your iPhone-XCode project:

Copy the “include” folder from OpenSSL into your project-folderCopy the libcrypto.a and libssl.a files into your project-folderDrag the libcrypto.a and libssl.a files into your XCode Framework Folder-TreeOpen the Build-Info from your “Target” (Righclick on Target – Get Info)Change Library Search Paths to

$(inherited) "$(SRCROOT)"

Change User Header Search Paths to includeActivate Always Search User Paths

Enjoy OpenSSL on the iPhone!

I have made an iOS 3.2/4.0 XCode Project with OpenSSL 1.0.0a libaries. The examples uses the MD5-algorithm to calculate an md5 hash from an UITextfield.

Download: http://github.com/x2on/OpenSSL-for-iPhone

Disclaimer: Use this at your own risk.

Links:

http://www.therareair.com/2009/01/01/tutorial-how-to-compile-openssl-for-the-iphone/ http://www.openssl.org/ http://cocoawithlove.com/2009/06/base64-encoding-options-on