Re: RSA and libcrypto
Re: RSA and libcrypto
On 14 Jan 2014, at 20:44, Charles Srstka <email@hidden> wrote:
> On Jan 14, 2014, at 1:09 PM, Jens Alfke <email@hidden> wrote:
>
>> On Jan 14, 2014, at 9:37 AM, Jean-Daniel Dupas <email@hidden> 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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