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      1 =pod
      2 
      3 =head1 NAME
      4 
      5 EVP_MD-SHA2 - The SHA2 EVP_MD implementation
      6 
      7 =head1 DESCRIPTION
      8 
      9 Support for computing SHA2 digests through the B<EVP_MD> API.
     10 
     11 =head2 Identities
     12 
     13 This implementation includes the following varieties:
     14 
     15 =over 4
     16 
     17 =item *
     18 
     19 Available with the FIPS provider as well as the default provider:
     20 
     21 =over 4
     22 
     23 =item SHA2-224
     24 
     25 Known names are "SHA2-224", "SHA-224" and "SHA224".
     26 
     27 =item SHA2-256
     28 
     29 Known names are "SHA2-256", "SHA-256" and "SHA256".
     30 
     31 =item SHA2-384
     32 
     33 Known names are "SHA2-384", "SHA-384" and "SHA384".
     34 
     35 =item SHA2-512
     36 
     37 Known names are "SHA2-512", "SHA-512" and "SHA512".
     38 
     39 =back
     40 
     41 =item *
     42 
     43 Available with the default provider:
     44 
     45 =over 4
     46 
     47 =item SHA2-256/192
     48 
     49 Known names are "SHA2-256/192", "SHA-256/192" and "SHA256-192".
     50 
     51 =item SHA2-512/224
     52 
     53 Known names are "SHA2-512/224", "SHA-512/224" and "SHA512-224".
     54 
     55 =item SHA2-512/256
     56 
     57 Known names are "SHA2-512/256", "SHA-512/256" and "SHA512-256".
     58 
     59 =back
     60 
     61 =back
     62 
     63 =head2 Gettable Parameters
     64 
     65 This implementation supports the common gettable parameters described
     66 in L<EVP_MD-common(7)>.
     67 
     68 =head1 SEE ALSO
     69 
     70 L<provider-digest(7)>, L<OSSL_PROVIDER-FIPS(7)>, L<OSSL_PROVIDER-default(7)>
     71 
     72 =head1 COPYRIGHT
     73 
     74 Copyright 2020-2023 The OpenSSL Project Authors. All Rights Reserved.
     75 
     76 Licensed under the Apache License 2.0 (the "License").  You may not use
     77 this file except in compliance with the License.  You can obtain a copy
     78 in the file LICENSE in the source distribution or at
     79 L<https://www.openssl.org/source/license.html>.
     80 
     81 =cut
     82