1=pod 2 3=head1 NAME 4 5EVP_PKEY_print_public, EVP_PKEY_print_private, EVP_PKEY_print_params - public key algorithm printing routines 6 7=head1 SYNOPSIS 8 9 #include <openssl/evp.h> 10 11 int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey, 12 int indent, ASN1_PCTX *pctx); 13 int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey, 14 int indent, ASN1_PCTX *pctx); 15 int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey, 16 int indent, ASN1_PCTX *pctx); 17 18=head1 DESCRIPTION 19 20The functions EVP_PKEY_print_public(), EVP_PKEY_print_private() and 21EVP_PKEY_print_params() print out the public, private or parameter components 22of key B<pkey> respectively. The key is sent to BIO B<out> in human readable 23form. The parameter B<indent> indicated how far the printout should be indented. 24 25The B<pctx> parameter allows the print output to be finely tuned by using 26ASN1 printing options. If B<pctx> is set to NULL then default values will 27be used. 28 29=head1 NOTES 30 31Currently no public key algorithms include any options in the B<pctx> parameter. 32 33If the key does not include all the components indicated by the function then 34only those contained in the key will be printed. For example passing a public 35key to EVP_PKEY_print_private() will only print the public components. 36 37=head1 RETURN VALUES 38 39These functions all return 1 for success and 0 or a negative value for failure. 40In particular a return value of -2 indicates the operation is not supported by 41the public key algorithm. 42 43=head1 SEE ALSO 44 45L<EVP_PKEY_CTX_new(3)>, 46L<EVP_PKEY_keygen(3)> 47 48=head1 HISTORY 49 50These functions were added in OpenSSL 1.0.0. 51 52=head1 COPYRIGHT 53 54Copyright 2006-2017 The OpenSSL Project Authors. All Rights Reserved. 55 56Licensed under the OpenSSL license (the "License"). You may not use 57this file except in compliance with the License. You can obtain a copy 58in the file LICENSE in the source distribution or at 59L<https://www.openssl.org/source/license.html>. 60 61=cut 62