man 7ossl EVP_CIPHER-SM4

EVP_CIPHER-SM4(7ossl)               OpenSSL              EVP_CIPHER-SM4(7ossl)

NAME
       EVP_CIPHER-SM4 - The SM4 EVP_CIPHER implementations

DESCRIPTION
       Support for SM4 symmetric encryption using the EVP_CIPHER API.

   Algorithm Names
       The following algorithms are available in the default provider:

       "SM4-CBC:SM4"
       "SM4-ECB"
       "SM4-CTR"
       "SM4-OFB" or "SM4-OFB128"
       "SM4-CFB" or "SM4-CFB128"
       "SM4-GCM"
       "SM4-CCM"
       "SM4-XTS"

   Parameters
       This implementation supports the parameters described in "PARAMETERS"
       in EVP_EncryptInit(3).

NOTES
       The SM4-XTS implementation allows streaming to be performed, but each
       EVP_EncryptUpdate(3) or EVP_DecryptUpdate(3) call requires each input
       to be a multiple of the blocksize. Only the final EVP_EncryptUpdate()
       or EVP_DecryptUpdate() call can optionally have an input that is not a
       multiple of the blocksize but is larger than one block. In that case
       ciphertext stealing (CTS) is used to fill the block.

SEE ALSO
       provider-cipher(7), OSSL_PROVIDER-default(7)

COPYRIGHT
       Copyright 2021 The OpenSSL Project Authors. 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>.

3.2.2                             2025-01-29             EVP_CIPHER-SM4(7ossl)