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.\" ========================================================================
.\"
.IX Title "EVP_KEM-RSA 7SSL"
.TH EVP_KEM-RSA 7SSL "2023-10-23" "3.0.11" "OpenSSL"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.SH "NAME"
EVP_KEM\-RSA
\&\- EVP_KEM RSA keytype and algorithm support
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
The \fB\s-1RSA\s0\fR keytype and its parameters are described in \s-1\fBEVP_PKEY\-RSA\s0\fR\|(7).
See \fBEVP_PKEY_encapsulate\fR\|(3) and \fBEVP_PKEY_decapsulate\fR\|(3) for more info.
.SS "\s-1RSA KEM\s0 parameters"
.IX Subsection "RSA KEM parameters"
.ie n .IP """operation"" (\fB\s-1OSSL_KEM_PARAM_OPERATION\s0\fR) <\s-1UTF8\s0 string>" 4
.el .IP "``operation'' (\fB\s-1OSSL_KEM_PARAM_OPERATION\s0\fR) <\s-1UTF8\s0 string>" 4
.IX Item "operation (OSSL_KEM_PARAM_OPERATION) <UTF8 string>"
The OpenSSL \s-1RSA\s0 Key Encapsulation Mechanism only currently supports the
following operation
.RS 4
.ie n .IP """\s-1RSASVE""\s0" 4
.el .IP "``\s-1RSASVE''\s0" 4
.IX Item "RSASVE"
The encapsulate function simply generates a secret using random bytes and then
encrypts the secret using the \s-1RSA\s0 public key (with no padding).
The decapsulate function recovers the secret using the \s-1RSA\s0 private key.
.RE
.RS 4
.Sp
This can be set using \fBEVP_PKEY_CTX_set_kem_op()\fR.
.RE
.SH "CONFORMING TO"
.IX Header "CONFORMING TO"
.IP "SP800\-56Br2" 4
.IX Item "SP800-56Br2"
Section 7.2.1.2 \s-1RSASVE\s0 Generate Operation (\s-1RSASVE.GENERATE\s0).
Section 7.2.1.3 \s-1RSASVE\s0 Recovery Operation (\s-1RSASVE.RECOVER\s0).
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBEVP_PKEY_CTX_set_kem_op\fR\|(3),
\&\fBEVP_PKEY_encapsulate\fR\|(3),
\&\fBEVP_PKEY_decapsulate\fR\|(3)
\&\s-1\fBEVP_KEYMGMT\s0\fR\|(3),
\&\s-1\fBEVP_PKEY\s0\fR\|(3),
\&\fBprovider\-keymgmt\fR\|(7)
.SH "HISTORY"
.IX Header "HISTORY"
This functionality was added in OpenSSL 3.0.
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.
.PP
Licensed under the Apache License 2.0 (the \*(L"License\*(R").  You may not use
this file except in compliance with the License.  You can obtain a copy
in the file \s-1LICENSE\s0 in the source distribution or at
<https://www.openssl.org/source/license.html>.