From: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Date: Thu, 04 Nov 2010 12:36:20 -0500 > crypto: algif_skcipher - User-space interface for skcipher operations > > This patch adds the af_alg plugin for symmetric key ciphers, > corresponding to the ablkcipher kernel operation type. > > Keys can optionally be set through the setsockopt interface. > > Once a sendmsg call occurs without MSG_MORE no further writes > may be made to the socket until all previous data has been read. > > IVs and and whether encryption/decryption is performed can be > set through the setsockopt interface or as a control message > to sendmsg. > > The interface is completely synchronous, all operations are > carried out in recvmsg(2) and will complete prior to the system > call returning. > > The splice(2) interface support reading the user-space data directly > without copying (except that the Crypto API itself may copy the data > if alignment is off). > > The recvmsg(2) interface supports directly writing to user-space > without additional copying, i.e., the kernel crypto interface will > receive the user-space address as its output SG list. > > Thakns to Miloslav Trmac for reviewing this and contributing > fixes and improvements. > > Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Acked-by: David S. Miller <davem@xxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
