.\" Automatically generated by Pod::Man 2.27 (Pod::Simple 3.28) .\" .\" Standard preamble: .\" ======================================================================== .de Sp \" Vertical space (when we can't use .PP) .if t .sp .5v .if n .sp .. .de Vb \" Begin verbatim text .ft CW .nf .ne \\$1 .. .de Ve \" End verbatim text .ft R .fi .. .\" Set up some character translations and predefined strings. \*(-- will .\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left .\" double quote, and \*(R" will give a right double quote. \*(C+ will .\" give a nicer C++. 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No user-serviceable parts. . \" fudge factors for nroff and troff .if n \{\ . ds #H 0 . ds #V .8m . ds #F .3m . ds #[ \f1 . ds #] \fP .\} .if t \{\ . ds #H ((1u-(\\\\n(.fu%2u))*.13m) . ds #V .6m . ds #F 0 . ds #[ \& . ds #] \& .\} . \" simple accents for nroff and troff .if n \{\ . ds ' \& . ds ` \& . ds ^ \& . ds , \& . ds ~ ~ . ds / .\} .if t \{\ . ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u" . ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u' . ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u' . ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u' . ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u' . ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u' .\} . \" troff and (daisy-wheel) nroff accents .ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V' .ds 8 \h'\*(#H'\(*b\h'-\*(#H' .ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#] .ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H' .ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u' .ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#] .ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#] .ds ae a\h'-(\w'a'u*4/10)'e .ds Ae A\h'-(\w'A'u*4/10)'E . \" corrections for vroff .if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u' .if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u' . \" for low resolution devices (crt and lpr) .if \n(.H>23 .if \n(.V>19 \ \{\ . ds : e . ds 8 ss . ds o a . ds d- d\h'-1'\(ga . ds D- D\h'-1'\(hy . ds th \o'bp' . ds Th \o'LP' . ds ae ae . ds Ae AE .\} .rm #[ #] #H #V #F C .\" ======================================================================== .\" .IX Title "EVP_CIPHER-AES 7ossl" .TH EVP_CIPHER-AES 7ossl "2024-01-30" "3.2.1" "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 \s-1AES\s0 symmetric encryption using the \fB\s-1EVP_CIPHER\s0\fR \s-1API.\s0 .SS "Algorithm Names" .IX Subsection "Algorithm Names" The following algorithms are available in the \s-1FIPS\s0 provider as well as the default provider: .ie n .IP """\s-1AES\-128\-CBC"", ""AES\-192\-CBC""\s0 and ""\s-1AES\-256\-CBC""\s0" 4 .el .IP "``\s-1AES\-128\-CBC'', ``AES\-192\-CBC''\s0 and ``\s-1AES\-256\-CBC''\s0" 4 .IX Item "AES-128-CBC, AES-192-CBC and AES-256-CBC" .PD 0 .ie n .IP """\s-1AES\-128\-CBC\-CTS"", ""AES\-192\-CBC\-CTS""\s0 and ""\s-1AES\-256\-CBC\-CTS""\s0" 4 .el .IP "``\s-1AES\-128\-CBC\-CTS'', ``AES\-192\-CBC\-CTS''\s0 and ``\s-1AES\-256\-CBC\-CTS''\s0" 4 .IX Item "AES-128-CBC-CTS, AES-192-CBC-CTS and AES-256-CBC-CTS" .ie n .IP """\s-1AES\-128\-CFB"", ""AES\-192\-CFB"", ""AES\-256\-CFB"", ""AES\-128\-CFB1"", ""AES\-192\-CFB1"", ""AES\-256\-CFB1"", ""AES\-128\-CFB8"", ""AES\-192\-CFB8""\s0 and ""\s-1AES\-256\-CFB8""\s0" 4 .el .IP "``\s-1AES\-128\-CFB'', ``AES\-192\-CFB'', ``AES\-256\-CFB'', ``AES\-128\-CFB1'', ``AES\-192\-CFB1'', ``AES\-256\-CFB1'', ``AES\-128\-CFB8'', ``AES\-192\-CFB8''\s0 and ``\s-1AES\-256\-CFB8''\s0" 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" .ie n .IP """\s-1AES\-128\-CTR"", ""AES\-192\-CTR""\s0 and ""\s-1AES\-256\-CTR""\s0" 4 .el .IP "``\s-1AES\-128\-CTR'', ``AES\-192\-CTR''\s0 and ``\s-1AES\-256\-CTR''\s0" 4 .IX Item "AES-128-CTR, AES-192-CTR and AES-256-CTR" .ie n .IP """\s-1AES\-128\-ECB"", ""AES\-192\-ECB""\s0 and ""\s-1AES\-256\-ECB""\s0" 4 .el .IP "``\s-1AES\-128\-ECB'', ``AES\-192\-ECB''\s0 and ``\s-1AES\-256\-ECB''\s0" 4 .IX Item "AES-128-ECB, AES-192-ECB and AES-256-ECB" .ie n .IP """\s-1AES\-192\-OFB"", ""AES\-128\-OFB""\s0 and ""\s-1AES\-256\-OFB""\s0" 4 .el .IP "``\s-1AES\-192\-OFB'', ``AES\-128\-OFB''\s0 and ``\s-1AES\-256\-OFB''\s0" 4 .IX Item "AES-192-OFB, AES-128-OFB and AES-256-OFB" .ie n .IP """\s-1AES\-128\-XTS""\s0 and ""\s-1AES\-256\-XTS""\s0" 4 .el .IP "``\s-1AES\-128\-XTS''\s0 and ``\s-1AES\-256\-XTS''\s0" 4 .IX Item "AES-128-XTS and AES-256-XTS" .ie n .IP """\s-1AES\-128\-CCM"", ""AES\-192\-CCM""\s0 and ""\s-1AES\-256\-CCM""\s0" 4 .el .IP "``\s-1AES\-128\-CCM'', ``AES\-192\-CCM''\s0 and ``\s-1AES\-256\-CCM''\s0" 4 .IX Item "AES-128-CCM, AES-192-CCM and AES-256-CCM" .ie n .IP """\s-1AES\-128\-GCM"", ""AES\-192\-GCM""\s0 and ""\s-1AES\-256\-GCM""\s0" 4 .el .IP "``\s-1AES\-128\-GCM'', ``AES\-192\-GCM''\s0 and ``\s-1AES\-256\-GCM''\s0" 4 .IX Item "AES-128-GCM, AES-192-GCM and AES-256-GCM" .ie n .IP """\s-1AES\-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""\s0 and ""\s-1AES\-256\-WRAP\-PAD\-INV""\s0" 4 .el .IP "``\s-1AES\-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''\s0 and ``\s-1AES\-256\-WRAP\-PAD\-INV''\s0" 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" .ie n .IP """\s-1AES\-128\-CBC\-HMAC\-SHA1"", ""AES\-256\-CBC\-HMAC\-SHA1"", ""AES\-128\-CBC\-HMAC\-SHA256""\s0 and ""\s-1AES\-256\-CBC\-HMAC\-SHA256""\s0" 4 .el .IP "``\s-1AES\-128\-CBC\-HMAC\-SHA1'', ``AES\-256\-CBC\-HMAC\-SHA1'', ``AES\-128\-CBC\-HMAC\-SHA256''\s0 and ``\s-1AES\-256\-CBC\-HMAC\-SHA256''\s0" 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 \&\s-1FIPS\s0 provider: .ie n .IP """\s-1AES\-128\-OCB"", ""AES\-192\-OCB""\s0 and ""\s-1AES\-256\-OCB""\s0" 4 .el .IP "``\s-1AES\-128\-OCB'', ``AES\-192\-OCB''\s0 and ``\s-1AES\-256\-OCB''\s0" 4 .IX Item "AES-128-OCB, AES-192-OCB and AES-256-OCB" .PD 0 .ie n .IP """\s-1AES\-128\-SIV"", ""AES\-192\-SIV""\s0 and ""\s-1AES\-256\-SIV""\s0" 4 .el .IP "``\s-1AES\-128\-SIV'', ``AES\-192\-SIV''\s0 and ``\s-1AES\-256\-SIV''\s0" 4 .IX Item "AES-128-SIV, AES-192-SIV and AES-256-SIV" .ie n .IP """\s-1AES\-128\-GCM\-SIV"", ""AES\-192\-GCM\-SIV""\s0 and ""\s-1AES\-256\-GCM\-SIV""\s0" 4 .el .IP "``\s-1AES\-128\-GCM\-SIV'', ``AES\-192\-GCM\-SIV''\s0 and ``\s-1AES\-256\-GCM\-SIV''\s0" 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 \&\*(L"\s-1PARAMETERS\*(R"\s0 in \fIEVP_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 \fIEVP_EncryptUpdate\fR\|(3) or \fIEVP_DecryptUpdate\fR\|(3) call after the initialization of the context. .PP The AES-XTS implementations allow streaming to be performed, but each \&\fIEVP_EncryptUpdate\fR\|(3) or \fIEVP_DecryptUpdate\fR\|(3) call requires each input to be a multiple of the blocksize. Only the final \fIEVP_EncryptUpdate()\fR or \&\fIEVP_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 (\s-1CTS\s0) is used to fill the block. .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fIprovider\-cipher\fR\|(7), \s-1\fIOSSL_PROVIDER\-FIPS\s0\fR\|(7), \fIOSSL_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 \*(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 .