kcapi_cipher_decrypt_aio - decrypt data (asynchronous one shot)

handle
           [in] cipher handle

       iniov
           [in] head of scatter-gather list array holding the ciphertext

       outiov
           [out] head of scatter-gather list with the destination buffers for the plaintext

       iovlen
           [in] number of scatter-gather list entries

       iv
           [in] IV to be used for cipher operation

       access
           [in] kernel access type (KCAPI_ACCESS_HEURISTIC - use internal heuristic for fastest kernel access;
           KCAPI_ACCESS_VMSPLICE - use vmsplice access; KCAPI_ACCESS_SENDMSG - sendmsg access)

StephanMueller <smueller@chronox.de>
           Author.

libkcapi Manual 1.5.0                              April 2024                            KCAPI_CIPHER_DECRYPT(3)

       The individual scatter-gather list entries are processed with separate invocations of the the given
       cipher.

       The memory should be aligned at the page boundary using posix_memalign(sysconf(_SC_PAGESIZE)), If it is
       not aligned at the page boundary, the vmsplice call may not send all data to the kernel.

       The IV buffer must be exactly kcapi_cipher_ivsize bytes in size.

       return number of bytes decrypted upon success; a negative errno-style error code if an error occurred

       kcapi_cipher_decrypt_aio - decrypt data (asynchronous one shot)

ssize_tkcapi_cipher_decrypt_aio(structkcapi_handle*handle,structiovec*iniov,structiovec*outiov,size_tiovlen,constuint8_t*iv,intaccess);