Updated: 2022/Sep/29

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EVP_PKEY_digestsign_supports_digest(3)                                 OpenSSL



NAME
       EVP_PKEY_digestsign_supports_digest - indicate support for signature
       digest

LIBRARY
       libcrypto, -lcrypto

SYNOPSIS
        #include <openssl/evp.h>
        int EVP_PKEY_digestsign_supports_digest(EVP_PKEY *pkey, OSSL_LIB_CTX *libctx,
                                                const char *name, const char *propq);

DESCRIPTION
       The EVP_PKEY_digestsign_supports_digest() function queries whether the
       message digest name is supported for public key signature operations
       associated with key pkey. The query is done within an optional library
       context libctx and with an optional property query propq.

RETURN VALUES
       The EVP_PKEY_digestsign_supports_digest() function returns 1 if the
       message digest algorithm identified by name can be used for public key
       signature operations associated with key pkey and 0 if it cannot be
       used. It returns a negative value for failure.

SEE ALSO
       EVP_DigestSignInit_ex(3),

HISTORY
       The EVP_PKEY_digestsign_supports_digest() function was added in OpenSSL
       3.0.

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>.



3.0.12                            2023-05-07
                                        EVP_PKEY_digestsign_supports_digest(3)