'\" t
.\"     Title: kcapi_akcipher_encrypt_aio
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: November 2020
.\"    Manual: Programming Interface
.\"    Source: libkcapi Manual 1.2.1
.\"  Language: English
.\"
.TH "KCAPI_AKCIPHER_ENCRY" "3" "November 2020" "libkcapi Manual 1\&.2\&.1" "Programming Interface"
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.SH "NAME"
kcapi_akcipher_encrypt_aio \- encrypt data (asynchronous one shot)
.SH "SYNOPSIS"
.HP \w'int32_t\ kcapi_akcipher_encrypt_aio('u
.BI "int32_t kcapi_akcipher_encrypt_aio(struct\ kcapi_handle\ *\ " "handle" ", struct\ iovec\ *\ " "iniov" ", struct\ iovec\ *\ " "outiov" ", uint32_t\ " "iovlen" ", int\ " "access" ");"
.SH "ARGUMENTS"
.PP
\fIhandle\fR
.RS 4
[in] cipher handle
.RE
.PP
\fIiniov\fR
.RS 4
[in] head of scatter\-gather list array holding the plaintext
.RE
.PP
\fIoutiov\fR
.RS 4
[out] head of scatter\-gather list of the destination buffers filled with ciphertext
.RE
.PP
\fIiovlen\fR
.RS 4
[in] number of scatter\-gather list entries
.RE
.PP
\fIaccess\fR
.RS 4
[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)
.RE
.SH "DESCRIPTION"
.PP
The individual scatter\-gather list entries are processed with separate invocations of the the given cipher\&.
.PP
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\&.
.PP
\fIreturn\fR
number of bytes encrypted upon success; a negative errno\-style error code if an error occurred
.SH "AUTHOR"
.PP
\fBStephan Mueller\fR <\&smueller@chronox.de\&>
.RS 4
Author.
.RE
.SH "COPYRIGHT"
.br