NAME

       kcapi_akcipher_stream_init_dec - start an decryption operation (stream)

SYNOPSIS

       int32_t kcapi_akcipher_stream_init_dec(struct kcapi_handle * handle, struct iovec * iov,
                                              uint32_t iovlen);

ARGUMENTS

       handle
           [in] cipher handle

       iov
           [in] scatter/gather list with data to be decrypted. This is the pointer to the first iov entry if an
           array of iov entries is supplied. See sendmsg(2) for details on how iov is to be used. This pointer
           may be NULL if no data to be decrypted is available at the point of the call.

       iovlen
           [in] number of scatter/gather list elements. If iov is NULL, this value must be zero.

DESCRIPTION

       A stream decryption operation is started with this call. Multiple successive kcapi_akcipher_stream_update
       function calls can be invoked to send more plaintext data to be decrypted. The last invocation to supply
       data must be done with kcapi_akcipher_stream_update_last. The kernel buffers the input until
       kcapi_akcipher_stream_op picks up the encrypted data. Once plaintext is decrypted during the
       kcapi_cipher_stream_op it is removed from the kernel buffer.

       The function calls of kcapi_akcipher_stream_update and kcapi_akcipher_stream_op can be mixed, even by
       multiple threads of an application.

       return number of bytes sent to the kernel upon success; a negative errno-style error code if an error
       occurred

AUTHOR

       Stephan Mueller <smueller@chronox.de>
           Author.

COPYRIGHT

libkcapi Manual 1.0.3                             February 2018                          KCAPI_AKCIPHER_STREA(3)