Are there some good examples out there that show how to use Keychain Services in Mac OS X?

Answer 1

Not sure about where to find better documentation, but sometimes good place to find example code is Google code search:

http://www.google.com/codesearch?q=SecKeychainFindGenericPassword&hl=en

Answer 2

When I wrote the 24 Deadly Sins of Software Security, I added a section on using the KeyChain, but to be honest the documentation from Apple is very hard to find. I used the OpenDarwin site (opendarwin.org) but that has since died a death. Here's the code from the book:

// Set password SecKeychainRef keychain = NULL; // User's default keychain OSStatus status= SecKeychainAddGenericPassword(keychain, strlen(serviceName), serviceName, strlen(accountName), accountName, strlen(passwordData), passwordData, NULL);

if (status == noErr) { // cool! }

// Get password char *password = NULL; u_int_32_t passwordLen = 0;

status = SecKeychainFindGenericPassword(keychain, strlen(serviceName), serviceName, strlen(accountName), accountName, &passwordLen, &password, NULL);

if (status == noErr) { // Cool! Use pwd ...

// Now Cleanup
guaranteed_memset(password,42,passwordLen);
SecKeychainItemFreeContent(NULL, (void*)password);

}

Answer 3

found the info

http://developer.apple.com/mac/library/documentation/Security/Conceptual/keychainServConcepts/01introduction/introduction.html

Answer 4

Advanced Mac OS X Programming has a nice chapter on Keychain service. The authors also complained about the documentation which looks like it was put together in the last minute before release, as you did.

That book is a bit dated, and not that advanced if you already have a unix background, but I found it still worth having on my bookshelf. Recommended.