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+.\" -*- mode: troff; coding: utf-8 -*-
+.\" Automatically generated by Pod::Man v6.0.2 (Pod::Simple 3.45)
+.\"
+.\" Standard preamble:
+.\" ========================================================================
+.de Sp \" Vertical space (when we can't use .PP)
+.if t .sp .5v
+.if n .sp
+..
+.de Vb \" Begin verbatim text
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+..
+.de Ve \" End verbatim text
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+..
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+.ie \n(.g .ds Aq \(aq
+.el .ds Aq '
+.\"
+.\" If the F register is >0, we'll generate index entries on stderr for
+.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
+.\" entries marked with X<> in POD. Of course, you'll have to process the
+.\" output yourself in some meaningful fashion.
+.\"
+.\" Avoid warning from groff about undefined register 'F'.
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+..
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+.\}
+.rr rF
+.\"
+.\" Required to disable full justification in groff 1.23.0.
+.if n .ds AD l
+.\" ========================================================================
+.\"
+.IX Title "EVP_CIPHER-AES 7ossl"
+.TH EVP_CIPHER-AES 7ossl 2026-04-07 3.5.6 OpenSSL
+.\" For nroff, turn off justification. Always turn off hyphenation; it makes
+.\" way too many mistakes in technical documents.
+.if n .ad l
+.nh
+.SH NAME
+EVP_CIPHER\-AES \- The AES EVP_CIPHER implementations
+.SH DESCRIPTION
+.IX Header "DESCRIPTION"
+Support for AES symmetric encryption using the \fBEVP_CIPHER\fR API.
+.SS "Algorithm Names"
+.IX Subsection "Algorithm Names"
+The following algorithms are available in the FIPS provider as well as the
+default provider:
+.IP """AES\-128\-CBC"", ""AES\-192\-CBC"" and ""AES\-256\-CBC""" 4
+.IX Item """AES-128-CBC"", ""AES-192-CBC"" and ""AES-256-CBC"""
+.PD 0
+.IP """AES\-128\-CBC\-CTS"", ""AES\-192\-CBC\-CTS"" and ""AES\-256\-CBC\-CTS""" 4
+.IX Item """AES-128-CBC-CTS"", ""AES-192-CBC-CTS"" and ""AES-256-CBC-CTS"""
+.IP """AES\-128\-CFB"", ""AES\-192\-CFB"", ""AES\-256\-CFB"", ""AES\-128\-CFB1"", ""AES\-192\-CFB1"", ""AES\-256\-CFB1"", ""AES\-128\-CFB8"", ""AES\-192\-CFB8"" and ""AES\-256\-CFB8""" 4
+.IX Item """AES-128-CFB"", ""AES-192-CFB"", ""AES-256-CFB"", ""AES-128-CFB1"", ""AES-192-CFB1"", ""AES-256-CFB1"", ""AES-128-CFB8"", ""AES-192-CFB8"" and ""AES-256-CFB8"""
+.IP """AES\-128\-CTR"", ""AES\-192\-CTR"" and ""AES\-256\-CTR""" 4
+.IX Item """AES-128-CTR"", ""AES-192-CTR"" and ""AES-256-CTR"""
+.IP """AES\-128\-ECB"", ""AES\-192\-ECB"" and ""AES\-256\-ECB""" 4
+.IX Item """AES-128-ECB"", ""AES-192-ECB"" and ""AES-256-ECB"""
+.IP """AES\-192\-OFB"", ""AES\-128\-OFB"" and ""AES\-256\-OFB""" 4
+.IX Item """AES-192-OFB"", ""AES-128-OFB"" and ""AES-256-OFB"""
+.IP """AES\-128\-XTS"" and ""AES\-256\-XTS""" 4
+.IX Item """AES-128-XTS"" and ""AES-256-XTS"""
+.IP """AES\-128\-CCM"", ""AES\-192\-CCM"" and ""AES\-256\-CCM""" 4
+.IX Item """AES-128-CCM"", ""AES-192-CCM"" and ""AES-256-CCM"""
+.IP """AES\-128\-GCM"", ""AES\-192\-GCM"" and ""AES\-256\-GCM""" 4
+.IX Item """AES-128-GCM"", ""AES-192-GCM"" and ""AES-256-GCM"""
+.IP """AES\-128\-WRAP"", ""AES\-192\-WRAP"", ""AES\-256\-WRAP"", ""AES\-128\-WRAP\-PAD"", ""AES\-192\-WRAP\-PAD"", ""AES\-256\-WRAP\-PAD"", ""AES\-128\-WRAP\-INV"", ""AES\-192\-WRAP\-INV"", ""AES\-256\-WRAP\-INV"", ""AES\-128\-WRAP\-PAD\-INV"", ""AES\-192\-WRAP\-PAD\-INV"" and ""AES\-256\-WRAP\-PAD\-INV""" 4
+.IX Item """AES-128-WRAP"", ""AES-192-WRAP"", ""AES-256-WRAP"", ""AES-128-WRAP-PAD"", ""AES-192-WRAP-PAD"", ""AES-256-WRAP-PAD"", ""AES-128-WRAP-INV"", ""AES-192-WRAP-INV"", ""AES-256-WRAP-INV"", ""AES-128-WRAP-PAD-INV"", ""AES-192-WRAP-PAD-INV"" and ""AES-256-WRAP-PAD-INV"""
+.IP """AES\-128\-CBC\-HMAC\-SHA1"", ""AES\-256\-CBC\-HMAC\-SHA1"", ""AES\-128\-CBC\-HMAC\-SHA256"" and ""AES\-256\-CBC\-HMAC\-SHA256""" 4
+.IX Item """AES-128-CBC-HMAC-SHA1"", ""AES-256-CBC-HMAC-SHA1"", ""AES-128-CBC-HMAC-SHA256"" and ""AES-256-CBC-HMAC-SHA256"""
+.PD
+.PP
+The following algorithms are available in the default provider, but not the
+FIPS provider:
+.IP """AES\-128\-OCB"", ""AES\-192\-OCB"" and ""AES\-256\-OCB""" 4
+.IX Item """AES-128-OCB"", ""AES-192-OCB"" and ""AES-256-OCB"""
+.PD 0
+.IP """AES\-128\-SIV"", ""AES\-192\-SIV"" and ""AES\-256\-SIV""" 4
+.IX Item """AES-128-SIV"", ""AES-192-SIV"" and ""AES-256-SIV"""
+.IP """AES\-128\-GCM\-SIV"", ""AES\-192\-GCM\-SIV"" and ""AES\-256\-GCM\-SIV""" 4
+.IX Item """AES-128-GCM-SIV"", ""AES-192-GCM-SIV"" and ""AES-256-GCM-SIV"""
+.PD
+.SS Parameters
+.IX Subsection "Parameters"
+This implementation supports the parameters described in
+"PARAMETERS" in \fBEVP_EncryptInit\fR\|(3).
+.SH NOTES
+.IX Header "NOTES"
+The AES\-SIV and AES\-WRAP mode implementations do not support streaming. That
+means to obtain correct results there can be only one \fBEVP_EncryptUpdate\fR\|(3)
+or \fBEVP_DecryptUpdate\fR\|(3) call after the initialization of the context.
+.PP
+The AES\-XTS implementations allow streaming to be performed, but each
+\&\fBEVP_EncryptUpdate\fR\|(3) or \fBEVP_DecryptUpdate\fR\|(3) call requires each input
+to be a multiple of the blocksize. Only the final \fBEVP_EncryptUpdate()\fR or
+\&\fBEVP_DecryptUpdate()\fR call can optionally have an input that is not a multiple
+of the blocksize but is larger than one block. In that case ciphertext
+stealing (CTS) is used to fill the block.
+.SH "SEE ALSO"
+.IX Header "SEE ALSO"
+\&\fBprovider\-cipher\fR\|(7), \fBOSSL_PROVIDER\-FIPS\fR\|(7), \fBOSSL_PROVIDER\-default\fR\|(7)
+.SH HISTORY
+.IX Header "HISTORY"
+The GCM\-SIV mode ciphers were added in OpenSSL version 3.2.
+.SH COPYRIGHT
+.IX Header "COPYRIGHT"
+Copyright 2021\-2023 The OpenSSL Project Authors. All Rights Reserved.
+.PP
+Licensed under the Apache License 2.0 (the "License"). You may not use
+this file except in compliance with the License. You can obtain a copy
+in the file LICENSE in the source distribution or at
+<https://www.openssl.org/source/license.html>.