'\" t
.\"     Title: crypto_alloc_rng
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: April 2019
.\"    Manual: Programming Interface
.\"    Source: Kernel Hackers Manual 4.9.168
.\"  Language: English
.\"
.TH "CRYPTO_ALLOC_RNG" "9" "April 2019" "Kernel Hackers Manual 4\&.9\&." "Programming Interface"
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.SH "NAME"
crypto_alloc_rng \- \- allocate RNG handle
.SH "SYNOPSIS"
.HP \w'struct\ crypto_rng\ *\ crypto_alloc_rng('u
.BI "struct crypto_rng * crypto_alloc_rng(const\ char\ *\ " "alg_name" ", u32\ " "type" ", u32\ " "mask" ");"
.SH "ARGUMENTS"
.PP
\fIalg_name\fR
.RS 4
is the cra_name / name or cra_driver_name / driver name of the message digest cipher
.RE
.PP
\fItype\fR
.RS 4
specifies the type of the cipher
.RE
.PP
\fImask\fR
.RS 4
specifies the mask for the cipher
.RE
.SH "DESCRIPTION"
.PP
Allocate a cipher handle for a random number generator\&. The returned struct crypto_rng is the cipher handle that is required for any subsequent API invocation for that random number generator\&.
.PP
For all random number generators, this call creates a new private copy of the random number generator that does not share a state with other instances\&. The only exception is the
\(lqkrng\(rq
random number generator which is a kernel crypto API use case for the
\fBget_random_bytes\fR
function of the /dev/random driver\&.
.SH "RETURN"
.PP
allocated cipher handle in case of success;
\fBIS_ERR\fR
is true in case of an error,
\fBPTR_ERR\fR
returns the error code\&.
.SH "AUTHORS"
.PP
\fBStephan Mueller\fR <\&smueller@chronox.de\&>
.RS 4
Author.
.RE
.PP
\fBMarek Vasut\fR <\&marek@denx.de\&>
.RS 4
Author.
.RE
.SH "COPYRIGHT"
.br