NAME

       EVP_CIPHER-AES - The AES EVP_CIPHER implementations

DESCRIPTION

       Support for AES symmetric encryption using the EVP_CIPHER API.

   Algorithm Names
       The following algorithms are available in the FIPS provider as well as the default provider:

       "AES-128-CBC", "AES-192-CBC" and  "AES-256-CBC"
       "AES-128-CBC-CTS", "AES-192-CBC-CTS" and "AES-256-CBC-CTS"
       "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"
       "AES-128-CTR", "AES-192-CTR" and "AES-256-CTR"
       "AES-128-ECB", "AES-192-ECB" and "AES-256-ECB"
       "AES-192-OFB", "AES-128-OFB" and "AES-256-OFB"
       "AES-128-XTS" and "AES-256-XTS"
       "AES-128-CCM", "AES-192-CCM" and "AES-256-CCM"
       "AES-128-GCM", "AES-192-GCM" and "AES-256-GCM"
       "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"
       "AES-128-CBC-HMAC-SHA1", "AES-256-CBC-HMAC-SHA1", "AES-128-CBC-HMAC-SHA256" and "AES-256-CBC-HMAC-SHA256"

       The following algorithms are available in the default provider, but not the FIPS provider:

       "AES-128-OCB", "AES-192-OCB" and "AES-256-OCB"
       "AES-128-SIV", "AES-192-SIV" and "AES-256-SIV"
       "AES-128-GCM-SIV", "AES-192-GCM-SIV" and "AES-256-GCM-SIV"

   Parameters
       This implementation supports the parameters described in "PARAMETERS" in EVP_EncryptInit(3).

NOTES

       The  AES-SIV  and  AES-WRAP  mode  implementations do not support streaming. That means to obtain correct
       results there can be only one EVP_EncryptUpdate(3) or EVP_DecryptUpdate(3) call after the  initialization
       of the context.

       The   AES-XTS  implementations  allow  streaming  to  be  performed,  but  each  EVP_EncryptUpdate(3)  or
       EVP_DecryptUpdate(3) call requires each input  to  be  a  multiple  of  the  blocksize.  Only  the  final
       EVP_EncryptUpdate()  or  EVP_DecryptUpdate()  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.

SEE ALSO

       provider-cipher(7), OSSL_PROVIDER-FIPS(7), OSSL_PROVIDER-default(7)

HISTORY

       The GCM-SIV mode ciphers were added in OpenSSL version 3.2.

COPYRIGHT

       Copyright 2021-2023 The OpenSSL Project Authors. All Rights Reserved.

       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>.

3.4.1                                              2025-04-03                               EVP_CIPHER-AES(7SSL)