EVP_sm4_cbc(3) - NetBSD Manual Pages

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EVP_sm4_cbc(3)                      OpenSSL                     EVP_sm4_cbc(3)




NAME

       EVP_sm4_cbc, EVP_sm4_ecb, EVP_sm4_cfb, EVP_sm4_cfb128, EVP_sm4_ofb,
       EVP_sm4_ctr - EVP SM4 cipher


SYNOPSIS

        #include <openssl/evp.h>

        const EVP_CIPHER *EVP_sm4_cbc(void);
        const EVP_CIPHER *EVP_sm4_ecb(void);
        const EVP_CIPHER *EVP_sm4_cfb(void);
        const EVP_CIPHER *EVP_sm4_cfb128(void);
        const EVP_CIPHER *EVP_sm4_ofb(void);
        const EVP_CIPHER *EVP_sm4_ctr(void);


DESCRIPTION

       The SM4 blockcipher (GB/T 32907-2016) for EVP.

       All modes below use a key length of 128 bits and acts on blocks of 128
       bits.

       EVP_sm4_cbc(), EVP_sm4_ecb(), EVP_sm4_cfb(), EVP_sm4_cfb128(),
       EVP_sm4_ofb(), EVP_sm4_ctr()
           The SM4 blockcipher with a 128-bit key in CBC, ECB, CFB, OFB and
           CTR modes respectively.


NOTES

       Developers should be aware of the negative performance implications of
       calling these functions multiple times and should consider using
       EVP_CIPHER_fetch(3) with EVP_CIPHER-SM4(7) instead.  See "Performance"
       in crypto(7) for further information.


RETURN VALUES

       These functions return a 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 2017-2023 The OpenSSL Project Authors. All Rights Reserved.
       Copyright 2017 Ribose Inc. 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>.



3.0.15                            2024-09-03                    EVP_sm4_cbc(3)