Provided by: libkcapi-dev_1.4.0-1ubuntu4_amd64
NAME
kcapi_cipher_encrypt_aio - encrypt data (asynchronous one shot)
SYNOPSIS
ssize_t kcapi_cipher_encrypt_aio(struct kcapi_handle * handle, struct iovec * iniov, struct iovec * outiov, size_t iovlen, const uint8_t * iv, int access);
ARGUMENTS
handle [in] cipher handle iniov [in] head of scatter-gather list array holding the plaintext outiov [out] head of scatter-gather list of the destination buffers filled with ciphertext 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)
DESCRIPTION
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 encrypted upon success; a negative errno-style error code if an error occurred
AUTHOR
Stephan Mueller <smueller@chronox.de> Author.