NAME

       EVP_aes_128_cbc, EVP_aes_192_cbc, EVP_aes_256_cbc, EVP_aes_128_cfb, EVP_aes_192_cfb, EVP_aes_256_cfb,
       EVP_aes_128_cfb1, EVP_aes_192_cfb1, EVP_aes_256_cfb1, EVP_aes_128_cfb8, EVP_aes_192_cfb8,
       EVP_aes_256_cfb8, EVP_aes_128_cfb128, EVP_aes_192_cfb128, EVP_aes_256_cfb128, EVP_aes_128_ctr,
       EVP_aes_192_ctr, EVP_aes_256_ctr, EVP_aes_128_ecb, EVP_aes_192_ecb, EVP_aes_256_ecb, EVP_aes_128_ofb,
       EVP_aes_192_ofb, EVP_aes_256_ofb, EVP_aes_128_cbc_hmac_sha1, EVP_aes_256_cbc_hmac_sha1,
       EVP_aes_128_cbc_hmac_sha256, EVP_aes_256_cbc_hmac_sha256, EVP_aes_128_ccm, EVP_aes_192_ccm,
       EVP_aes_256_ccm, EVP_aes_128_gcm, EVP_aes_192_gcm, EVP_aes_256_gcm, EVP_aes_128_ocb, EVP_aes_192_ocb,
       EVP_aes_256_ocb, EVP_aes_128_wrap, EVP_aes_192_wrap, EVP_aes_256_wrap, EVP_aes_128_wrap_pad,
       EVP_aes_192_wrap_pad, EVP_aes_256_wrap_pad, EVP_aes_128_xts, EVP_aes_256_xts - EVP AES cipher

SYNOPSIS

        #include <openssl/evp.h>

        const EVP_CIPHER *EVP_ciphername(void)

       EVP_ciphername is used a placeholder for any of the described cipher functions, such as EVP_aes_128_cbc.

DESCRIPTION

       The AES encryption algorithm for EVP.

       EVP_aes_128_cbc(), EVP_aes_192_cbc(), EVP_aes_256_cbc(), EVP_aes_128_cfb(), EVP_aes_192_cfb(),
       EVP_aes_256_cfb(), EVP_aes_128_cfb1(), EVP_aes_192_cfb1(), EVP_aes_256_cfb1(), EVP_aes_128_cfb8(),
       EVP_aes_192_cfb8(), EVP_aes_256_cfb8(), EVP_aes_128_cfb128(), EVP_aes_192_cfb128(), EVP_aes_256_cfb128(),
       EVP_aes_128_ctr(), EVP_aes_192_ctr(), EVP_aes_256_ctr(), EVP_aes_128_ecb(), EVP_aes_192_ecb(),
       EVP_aes_256_ecb(), EVP_aes_128_ofb(), EVP_aes_192_ofb(), EVP_aes_256_ofb()
           AES for 128, 192 and 256 bit keys in the following modes: CBC, CFB with 128-bit shift, CFB with 1-bit
           shift, CFB with 8-bit shift, CTR, ECB, and OFB.

       EVP_aes_128_cbc_hmac_sha1(), EVP_aes_256_cbc_hmac_sha1()
           Authenticated  encryption  with  AES  in  CBC mode using SHA-1 as HMAC, with keys of 128 and 256 bits
           length respectively. The authentication tag is 160 bits long.

           WARNING: this is not intended for usage outside of TLS and requires calling of some undocumented ctrl
           functions. These ciphers do not conform to the EVP AEAD interface.

       EVP_aes_128_cbc_hmac_sha256(), EVP_aes_256_cbc_hmac_sha256()
           Authenticated encryption with AES in CBC mode using SHA256 (SHA-2, 256-bits) as HMAC,  with  keys  of
           128 and 256 bits length respectively. The authentication tag is 256 bits long.

           WARNING: this is not intended for usage outside of TLS and requires calling of some undocumented ctrl
           functions. These ciphers do not conform to the EVP AEAD interface.

       EVP_aes_128_ccm(), EVP_aes_192_ccm(), EVP_aes_256_ccm(), EVP_aes_128_gcm(), EVP_aes_192_gcm(),
       EVP_aes_256_gcm(), EVP_aes_128_ocb(), EVP_aes_192_ocb(), EVP_aes_256_ocb()
           AES  for  128,  192  and  256  bit keys in CBC-MAC Mode (CCM), Galois Counter Mode (GCM) and OCB Mode
           respectively. These ciphers require additional control operations  to  function  correctly,  see  the
           "AEAD Interface" in EVP_EncryptInit(3) section for details.

       EVP_aes_128_wrap(), EVP_aes_192_wrap(), EVP_aes_256_wrap(), EVP_aes_128_wrap_pad(), EVP_aes_128_wrap(),
       EVP_aes_192_wrap(), EVP_aes_256_wrap(), EVP_aes_192_wrap_pad(), EVP_aes_128_wrap(), EVP_aes_192_wrap(),
       EVP_aes_256_wrap(), EVP_aes_256_wrap_pad()
           AES  key wrap with 128, 192 and 256 bit keys, as according to RFC 3394 section 2.2.1 ("wrap") and RFC
           5649 section 4.1 ("wrap with padding") respectively.

       EVP_aes_128_xts(), EVP_aes_256_xts()
           AES XTS mode (XTS-AES) is standardized in IEEE Std. 1619-2007 and described in NIST SP  800-38E.  The
           XTS  (XEX-based  tweaked-codebook  mode  with ciphertext stealing) mode was designed by Prof. Phillip
           Rogaway of University of California, Davis, intended for encrypting data on a storage device.

           XTS-AES provides confidentiality but not authentication of data. It also requires a  key  of  double-
           length  for  protection  of  a  certain key size.  In particular, XTS-AES-128 (EVP_aes_128_xts) takes
           input of a 256-bit key to achieve AES 128-bit security, and XTS-AES-256 (EVP_aes_256_xts) takes input
           of a 512-bit key to achieve AES 256-bit security.

RETURN VALUES

       These functions return an EVP_CIPHER structure that contains the implementation of the symmetric  cipher.
       See EVP_CIPHER_meth_new(3) for details of the EVP_CIPHER structure.

SEE ALSO

       evp(7), EVP_EncryptInit(3), EVP_CIPHER_meth_new(3)

COPYRIGHT

       Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.

       Licensed  under the OpenSSL license (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>.

1.1.1f                                             2025-02-05                                      EVP_AES(3SSL)