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| 1 | .\" $OpenBSD: EVP_sm4_cbc.3,v 1.2 2023/11/16 20:27:43 schwarze Exp $ | ||
| 2 | .\" full merge up to: OpenSSL 87103969 Oct 1 14:11:57 2018 -0700 | ||
| 3 | .\" | ||
| 4 | .\" Copyright (c) 2017 Ribose Inc | ||
| 5 | .\" Copyright (c) 2019 Ingo Schwarze <schwarze@openbsd.org> | ||
| 6 | .\" The original version of this file | ||
| 7 | .\" was written by Ronald Tse <ronald.tse@ribose.com>. | ||
| 8 | .\" | ||
| 9 | .\" Permission to use, copy, modify, and/or distribute this software for any | ||
| 10 | .\" purpose with or without fee is hereby granted, provided that the above | ||
| 11 | .\" copyright notice and this permission notice appear in all copies. | ||
| 12 | .\" | ||
| 13 | .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES | ||
| 14 | .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | ||
| 15 | .\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR | ||
| 16 | .\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | ||
| 17 | .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | ||
| 18 | .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | ||
| 19 | .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | ||
| 20 | .\" | ||
| 21 | .Dd $Mdocdate: November 16 2023 $ | ||
| 22 | .Dt EVP_SM4_CBC 3 | ||
| 23 | .Os | ||
| 24 | .Sh NAME | ||
| 25 | .Nm EVP_sm4_cbc , | ||
| 26 | .Nm EVP_sm4_ecb , | ||
| 27 | .Nm EVP_sm4_cfb , | ||
| 28 | .Nm EVP_sm4_cfb128 , | ||
| 29 | .Nm EVP_sm4_ofb , | ||
| 30 | .Nm EVP_sm4_ctr | ||
| 31 | .Nd EVP SM4 cipher | ||
| 32 | .Sh SYNOPSIS | ||
| 33 | .In openssl/evp.h | ||
| 34 | .Ft const EVP_CIPHER * | ||
| 35 | .Fn EVP_sm4_cbc void | ||
| 36 | .Ft const EVP_CIPHER * | ||
| 37 | .Fn EVP_sm4_ecb void | ||
| 38 | .Ft const EVP_CIPHER * | ||
| 39 | .Fn EVP_sm4_cfb void | ||
| 40 | .Ft const EVP_CIPHER * | ||
| 41 | .Fn EVP_sm4_cfb128 void | ||
| 42 | .Ft const EVP_CIPHER * | ||
| 43 | .Fn EVP_sm4_ofb void | ||
| 44 | .Ft const EVP_CIPHER * | ||
| 45 | .Fn EVP_sm4_ctr void | ||
| 46 | .Sh DESCRIPTION | ||
| 47 | These functions provide the SM4 blockcipher in the | ||
| 48 | .Xr evp 3 | ||
| 49 | framework. | ||
| 50 | .Pp | ||
| 51 | All modes use a key length of 128 bits and act on blocks of 128 | ||
| 52 | bits. | ||
| 53 | .Pp | ||
| 54 | .Fn EVP_sm4_cfb | ||
| 55 | is an alias for | ||
| 56 | .Fn EVP_sm4_cfb128 , | ||
| 57 | implemented as a macro. | ||
| 58 | .Pp | ||
| 59 | With an argument of | ||
| 60 | .Qq sm4 | ||
| 61 | or | ||
| 62 | .Qq SM4 , | ||
| 63 | .Xr EVP_get_cipherbyname 3 | ||
| 64 | returns | ||
| 65 | .Fn EVP_sm4_cbc . | ||
| 66 | .Sh RETURN VALUES | ||
| 67 | These functions return an | ||
| 68 | .Vt EVP_CIPHER | ||
| 69 | structure that provides the implementation of the symmetric cipher. | ||
| 70 | .Sh SEE ALSO | ||
| 71 | .Xr evp 3 , | ||
| 72 | .Xr EVP_EncryptInit 3 | ||
| 73 | .Sh STANDARDS | ||
| 74 | .Rs | ||
| 75 | .%T Information security technology - SM4 block cipher algorithm | ||
| 76 | .%I National Standards of People's Republic of China | ||
| 77 | .%N GB/T 32907-2016 | ||
| 78 | .%D August 29, 2016 | ||
| 79 | .Re | ||
| 80 | .Sh HISTORY | ||
| 81 | These functions appeared in OpenSSL 1.1.1 and have been available since | ||
| 82 | .Ox 6.5 . | ||