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78 lines
2.8 KiB
Plaintext
78 lines
2.8 KiB
Plaintext
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=pod
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=head1 NAME
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EVP_PKEY_print_public, EVP_PKEY_print_private, EVP_PKEY_print_params,
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EVP_PKEY_print_public_fp, EVP_PKEY_print_private_fp,
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EVP_PKEY_print_params_fp - public key algorithm printing routines
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=head1 SYNOPSIS
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#include <openssl/evp.h>
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int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey,
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int indent, ASN1_PCTX *pctx);
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int EVP_PKEY_print_public_fp(FILE *fp, const EVP_PKEY *pkey,
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int indent, ASN1_PCTX *pctx);
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int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey,
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int indent, ASN1_PCTX *pctx);
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int EVP_PKEY_print_private_fp(FILE *fp, const EVP_PKEY *pkey,
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int indent, ASN1_PCTX *pctx);
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int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey,
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int indent, ASN1_PCTX *pctx);
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int EVP_PKEY_print_params_fp(FILE *fp, const EVP_PKEY *pkey,
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int indent, ASN1_PCTX *pctx);
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=head1 DESCRIPTION
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The functions EVP_PKEY_print_public(), EVP_PKEY_print_private() and
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EVP_PKEY_print_params() print out the public, private or parameter components
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of key I<pkey> respectively. The key is sent to B<BIO> I<out> in human readable
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form. The parameter I<indent> indicates how far the printout should be indented.
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The I<pctx> parameter allows the print output to be finely tuned by using
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ASN1 printing options. If I<pctx> is set to NULL then default values will
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be used.
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The functions EVP_PKEY_print_public_fp(), EVP_PKEY_print_private_fp() and
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EVP_PKEY_print_params_fp() do the same as the B<BIO> based functions
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but use B<FILE> I<fp> instead.
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=head1 NOTES
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Currently no public key algorithms include any options in the I<pctx> parameter.
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If the key does not include all the components indicated by the function then
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only those contained in the key will be printed. For example passing a public
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key to EVP_PKEY_print_private() will only print the public components.
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=head1 RETURN VALUES
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These functions all return 1 for success and 0 or a negative value for failure.
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In particular a return value of -2 indicates the operation is not supported by
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the public key algorithm.
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=head1 SEE ALSO
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L<EVP_PKEY_CTX_new(3)>,
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L<EVP_PKEY_keygen(3)>
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=head1 HISTORY
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The functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
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and EVP_PKEY_print_params() were added in OpenSSL 1.0.0.
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The functions EVP_PKEY_print_public_fp(), EVP_PKEY_print_private_fp(),
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and EVP_PKEY_print_params_fp() were added in OpenSSL 3.0.
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=head1 COPYRIGHT
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Copyright 2006-2021 The OpenSSL Project Authors. All Rights Reserved.
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Licensed under the Apache License 2.0 (the "License"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file LICENSE in the source distribution or at
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L<https://www.openssl.org/source/license.html>.
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=cut
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