=pod =head1 NAME EVP_PKEY_print_public, EVP_PKEY_print_private, EVP_PKEY_print_params - public key algorithm printing routines =head1 SYNOPSIS #include 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); =head1 DESCRIPTION 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 B respectively. The key is sent to BIO B in human readable form. The parameter B indicated how far the printout should be indented. The B parameter allows the print output to be finely tuned by using ASN1 printing options. If B is set to NULL then default values will be used. =head1 NOTES Currently no public key algorithms include any options in the B 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. =head1 RETURN VALUES 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 algorithm. =head1 SEE ALSO L, L =head1 HISTORY These functions were added in OpenSSL 1.0.0. =head1 COPYRIGHT 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 L. =cut