On 14 Jan 2014, at 20:44, Charles Srstka <[email protected]> wrote:

> On Jan 14, 2014, at 1:09 PM, Jens Alfke <[email protected]> wrote:
> 
>> On Jan 14, 2014, at 9:37 AM, Jean-Daniel Dupas <[email protected]> 
>> wrote:
>> 
>>> Just in case it was not mentioned in the thread, SecTransform supports RSA. 
>>> You can use SecEncryptTransformCreate() with an asymmetric key.
>> 
>> Great! But there was a previous assertion in this thread (by whom?) that the 
>> Apple docs say SecTransform doesn't support public-key crypto. I quickly 
>> looked through some docs but didn’t see a statement one way or another.
> 
> That was me, and here's the link:
> 
> https://developer.apple.com/library/mac/documentation/security/conceptual/SecTransformPG/EncryptionandDecryption/EncryptionandDecryption.html
> 
> "Note: The security transforms API supports only symmetric encryption and 
> decryption. For asymmetric encryption and decryption, you must use a 
> lower-level API, such as [the deprecated] CDSA. For more information, see the 
> CryptoSample sample project."
> 
> If transforms are actually capable of working with RSA, this needs a 
> documentation bug filed post-haste.
> 
Jean-Daniel is right. RSA crypto is doable on OS X with security.framework.
The CryptoCompatibility sample is actually very comprehensive.

I have submitted feedback regarding the flawed note above.

Jonathan



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