1EVP_AES(3) OpenSSL EVP_AES(3)
2
6 EVP_aes_128_cbc, EVP_aes_192_cbc, EVP_aes_256_cbc, EVP_aes_128_cfb,
7 EVP_aes_192_cfb, EVP_aes_256_cfb, EVP_aes_128_cfb1, EVP_aes_192_cfb1,
8 EVP_aes_256_cfb1, EVP_aes_128_cfb8, EVP_aes_192_cfb8, EVP_aes_256_cfb8,
9 EVP_aes_128_cfb128, EVP_aes_192_cfb128, EVP_aes_256_cfb128,
10 EVP_aes_128_ctr, EVP_aes_192_ctr, EVP_aes_256_ctr, EVP_aes_128_ecb,
11 EVP_aes_192_ecb, EVP_aes_256_ecb, EVP_aes_128_ofb, EVP_aes_192_ofb,
12 EVP_aes_256_ofb, EVP_aes_128_cbc_hmac_sha1, EVP_aes_256_cbc_hmac_sha1,
13 EVP_aes_128_cbc_hmac_sha256, EVP_aes_256_cbc_hmac_sha256,
14 EVP_aes_128_ccm, EVP_aes_192_ccm, EVP_aes_256_ccm, EVP_aes_128_gcm,
15 EVP_aes_192_gcm, EVP_aes_256_gcm, EVP_aes_128_ocb, EVP_aes_192_ocb,
16 EVP_aes_256_ocb, EVP_aes_128_wrap, EVP_aes_192_wrap, EVP_aes_256_wrap,
17 EVP_aes_128_wrap_pad, EVP_aes_192_wrap_pad, EVP_aes_256_wrap_pad,
18 EVP_aes_128_xts, EVP_aes_256_xts - EVP AES cipher
19
21 #include <openssl/evp.h>
22 const EVP_CIPHER *EVP_ciphername(void)
24 EVP_ciphername is used a placeholder for any of the described cipher
26 functions, such as EVP_aes_128_cbc.
27
29 The AES encryption algorithm for EVP.
30 EVP_aes_128_cbc(), EVP_aes_192_cbc(), EVP_aes_256_cbc(),
32 EVP_aes_128_cfb(), EVP_aes_192_cfb(), EVP_aes_256_cfb(),
33 EVP_aes_128_cfb1(), EVP_aes_192_cfb1(), EVP_aes_256_cfb1(),
34 EVP_aes_128_cfb8(), EVP_aes_192_cfb8(), EVP_aes_256_cfb8(),
35 EVP_aes_128_cfb128(), EVP_aes_192_cfb128(), EVP_aes_256_cfb128(),
36 EVP_aes_128_ctr(), EVP_aes_192_ctr(), EVP_aes_256_ctr(),
37 EVP_aes_128_ecb(), EVP_aes_192_ecb(), EVP_aes_256_ecb(),
38 EVP_aes_128_ofb(), EVP_aes_192_ofb(), EVP_aes_256_ofb()
39 AES for 128, 192 and 256 bit keys in the following modes: CBC, CFB
40 with 128-bit shift, CFB with 1-bit shift, CFB with 8-bit shift,
41 CTR, ECB, and OFB.
42 EVP_aes_128_cbc_hmac_sha1(), EVP_aes_256_cbc_hmac_sha1()
44 Authenticated encryption with AES in CBC mode using SHA-1 as HMAC,
45 with keys of 128 and 256 bits length respectively. The
46 authentication tag is 160 bits long.
47 WARNING: this is not intended for usage outside of TLS and requires
49 calling of some undocumented ctrl functions. These ciphers do not
50 conform to the EVP AEAD interface.
51 EVP_aes_128_cbc_hmac_sha256(), EVP_aes_256_cbc_hmac_sha256()
53 Authenticated encryption with AES in CBC mode using SHA256 (SHA-2,
54 256-bits) as HMAC, with keys of 128 and 256 bits length
55 respectively. The authentication tag is 256 bits long.
56 WARNING: this is not intended for usage outside of TLS and requires
58 calling of some undocumented ctrl functions. These ciphers do not
59 conform to the EVP AEAD interface.
60 EVP_aes_128_ccm(), EVP_aes_192_ccm(), EVP_aes_256_ccm(),
62 EVP_aes_128_gcm(), EVP_aes_192_gcm(), EVP_aes_256_gcm(),
63 EVP_aes_128_ocb(), EVP_aes_192_ocb(), EVP_aes_256_ocb()
64 AES for 128, 192 and 256 bit keys in CBC-MAC Mode (CCM), Galois
65 Counter Mode (GCM) and OCB Mode respectively. These ciphers require
66 additional control operations to function correctly, see the "AEAD
67 Interface" in EVP_EncryptInit(3) section for details.
68 EVP_aes_128_wrap(), EVP_aes_192_wrap(), EVP_aes_256_wrap(),
70 EVP_aes_128_wrap_pad(), EVP_aes_128_wrap(), EVP_aes_192_wrap(),
71 EVP_aes_256_wrap(), EVP_aes_192_wrap_pad(), EVP_aes_128_wrap(),
72 EVP_aes_192_wrap(), EVP_aes_256_wrap(), EVP_aes_256_wrap_pad()
73 AES key wrap with 128, 192 and 256 bit keys, as according to RFC
74 3394 section 2.2.1 ("wrap") and RFC 5649 section 4.1 ("wrap with
75 padding") respectively.
76 EVP_aes_128_xts(), EVP_aes_256_xts()
78 AES XTS mode (XTS-AES) is standardized in IEEE Std. 1619-2007 and
79 described in NIST SP 800-38E. The XTS (XEX-based tweaked-codebook
80 mode with ciphertext stealing) mode was designed by Prof. Phillip
81 Rogaway of University of California, Davis, intended for encrypting
82 data on a storage device.
83 XTS-AES provides confidentiality but not authentication of data. It
85 also requires a key of double-length for protection of a certain
86 key size. In particular, XTS-AES-128 (EVP_aes_128_xts) takes input
87 of a 256-bit key to achieve AES 128-bit security, and XTS-AES-256
88 (EVP_aes_256_xts) takes input of a 512-bit key to achieve AES
89 256-bit security.
90 The XTS implementation in OpenSSL does not support streaming. That
92 is there must only be one EVP_EncryptUpdate(3) call per
93 EVP_EncryptInit_ex(3) call (and similarly with the "Decrypt"
94 functions).
95 The iv parameter to EVP_EncryptInit_ex(3) or EVP_DecryptInit_ex(3)
97 is the XTS "tweak" value.
98
100 These functions return an EVP_CIPHER structure that contains the
101 implementation of the symmetric cipher. See EVP_CIPHER_meth_new(3) for
102 details of the EVP_CIPHER structure.
103
105 evp(7), EVP_EncryptInit(3), EVP_CIPHER_meth_new(3)
106
108 Copyright 2017-2020 The OpenSSL Project Authors. All Rights Reserved.
109 Licensed under the OpenSSL license (the "License"). You may not use
111 this file except in compliance with the License. You can obtain a copy
112 in the file LICENSE in the source distribution or at
113 <https://www.openssl.org/source/license.html>.
1141.1.1q 2023-07-20 EVP_AES(3)