# EVP_CIPHER-SEED(7ssl) - man - phpman

[EVP_CIPHER-SEED(7SSL)](https://www.chedong.com/phpMan.php/man/EVPCIPHER-SEED/7SSL/markdown)                          OpenSSL                         [EVP_CIPHER-SEED(7SSL)](https://www.chedong.com/phpMan.php/man/EVPCIPHER-SEED/7SSL/markdown)



## NAME
       EVP_CIPHER-SEED - The SEED EVP_CIPHER implementations

## DESCRIPTION
       Support for SEED symmetric encryption using the **EVP**___**CIPHER** API.

### Algorithm Names
       The following algorithms are available in the legacy provider:

       "SEED-CBC" or "SEED"
       "SEED-ECB"
       "SEED-OFB" or "SEED-OFB128"
       "SEED-CFB" or "SEED-CFB128"

### Parameters
       This implementation supports the parameters described in "PARAMETERS" in **EVP**___**[EncryptInit**(3)](https://www.chedong.com/phpMan.php/man/EncryptInit/3/markdown).

## SEE ALSO
       [**provider-cipher**(7)](https://www.chedong.com/phpMan.php/man/provider-cipher/7/markdown), **OSSL**___**[PROVIDER-legacy**(7)](https://www.chedong.com/phpMan.php/man/PROVIDER-legacy/7/markdown)

## 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>>.



3.0.2                                        2026-04-07                        [EVP_CIPHER-SEED(7SSL)](https://www.chedong.com/phpMan.php/man/EVPCIPHER-SEED/7SSL/markdown)