Messages in this thread | | | Date | Fri, 27 Jan 2006 08:23:45 +0100 | From | David Härdeman <> | Subject | Re: [PATCH 00/04] Add DSA key type |
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On Fri, Jan 27, 2006 at 12:22:31PM +1100, Herbert Xu wrote: >David H?rdeman <david@2gen.com> wrote: >> >> 3) Changes the keyctl syscall to accept six arguments (is it valid to do so?) >> and adds encryption as one of the supported ops for in-kernel keys. > >The asymmetric encryption support should be done inside the crypto/ >framework rather than as an extension to the key management system.
It is done inside the crypto/ framework. crypto/dsa.c implements the DSA signing as a hash crypto algorithm (since a DSA signature is two 160-bit integers, the result has a fixed size).
The above patch just adds the syscall to tell the in-kernel system that you wish to encrypt/sign something with a given key. In the case that the type of the given key is a DSA key, security/keys/dsa_key.c uses the dsa crypto alg from crypto/dsa.c to satisfy that request.
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