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       EVP_PKEY_print_public, EVP_PKEY_print_private, EVP_PKEY_print_params - public key
       algorithm printing routines


        #include <openssl/evp.h>

        int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey,
                                  int indent, ASN1_PCTX *pctx);
        int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey,
                                   int indent, ASN1_PCTX *pctx);
        int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey,
                                  int indent, ASN1_PCTX *pctx);


       The functions EVP_PKEY_print_public(), EVP_PKEY_print_private() and
       EVP_PKEY_print_params() print out the public, private or parameter components of key pkey
       respectively. The key is sent to BIO out in human readable form. The parameter indent
       indicated how far the printout should be indented.

       The pctx parameter allows the print output to be finely tuned by using ASN1 printing
       options. If pctx is set to NULL then default values will be used.


       Currently no public key algorithms include any options in the pctx parameter.

       If the key does not include all the components indicated by the function then only those
       contained in the key will be printed. For example passing a public key to
       EVP_PKEY_print_private() will only print the public components.


       These functions all return 1 for success and 0 or a negative value for failure.  In
       particular a return value of -2 indicates the operation is not supported by the public key


       EVP_PKEY_CTX_new(3), EVP_PKEY_keygen(3)


       These functions were added in OpenSSL 1.0.0.


       Copyright 2006-2017 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 <>.