1EVP_SM4_CBC(3ossl)                  OpenSSL                 EVP_SM4_CBC(3ossl)
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NAME

6       EVP_sm4_cbc, EVP_sm4_ecb, EVP_sm4_cfb, EVP_sm4_cfb128, EVP_sm4_ofb,
7       EVP_sm4_ctr - EVP SM4 cipher
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SYNOPSIS

10        #include <openssl/evp.h>
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12        const EVP_CIPHER *EVP_sm4_cbc(void);
13        const EVP_CIPHER *EVP_sm4_ecb(void);
14        const EVP_CIPHER *EVP_sm4_cfb(void);
15        const EVP_CIPHER *EVP_sm4_cfb128(void);
16        const EVP_CIPHER *EVP_sm4_ofb(void);
17        const EVP_CIPHER *EVP_sm4_ctr(void);
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DESCRIPTION

20       The SM4 blockcipher (GB/T 32907-2016) for EVP.
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22       All modes below use a key length of 128 bits and acts on blocks of 128
23       bits.
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25       EVP_sm4_cbc(), EVP_sm4_ecb(), EVP_sm4_cfb(), EVP_sm4_cfb128(),
26       EVP_sm4_ofb(), EVP_sm4_ctr()
27           The SM4 blockcipher with a 128-bit key in CBC, ECB, CFB, OFB and
28           CTR modes respectively.
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NOTES

31       Developers should be aware of the negative performance implications of
32       calling these functions multiple times and should consider using
33       EVP_CIPHER_fetch(3) instead.  See "Performance" in crypto(7) for
34       further information.
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RETURN VALUES

37       These functions return a EVP_CIPHER structure that contains the
38       implementation of the symmetric cipher. See EVP_CIPHER_meth_new(3) for
39       details of the EVP_CIPHER structure.
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SEE ALSO

42       evp(7), EVP_EncryptInit(3), EVP_CIPHER_meth_new(3)
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45       Copyright 2017-2023 The OpenSSL Project Authors. All Rights Reserved.
46       Copyright 2017 Ribose Inc. All Rights Reserved.
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48       Licensed under the Apache License 2.0 (the "License").  You may not use
49       this file except in compliance with the License.  You can obtain a copy
50       in the file LICENSE in the source distribution or at
51       <https://www.openssl.org/source/license.html>.
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553.1.1                             2023-08-31                EVP_SM4_CBC(3ossl)
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