I am looking to make use of MD5 or SHA-1 in my iOS application targeted at iOS 4 and later. I use the CC_MD5() and CC_SHA1() functions from CommonCrypto/CommonDigest.h. It seems
In the header file at path : /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk/usr/include/CommonCrypto/CommonDigest.h
we can see :
extern unsigned char *CC_MD5(const void *data, CC_LONG len, unsigned char *md)
__OSX_AVAILABLE_STARTING(__MAC_10_4, __IPHONE_2_0);
So, Apple now tell us it is supported :-)