1EVP_PKEY_PRINT_PRIVATE(3ossl)       OpenSSL      EVP_PKEY_PRINT_PRIVATE(3ossl)
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NAME

6       EVP_PKEY_print_public, EVP_PKEY_print_private, EVP_PKEY_print_params,
7       EVP_PKEY_print_public_fp, EVP_PKEY_print_private_fp,
8       EVP_PKEY_print_params_fp - public key algorithm printing routines
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SYNOPSIS

11        #include <openssl/evp.h>
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13        int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey,
14                                  int indent, ASN1_PCTX *pctx);
15        int EVP_PKEY_print_public_fp(FILE *fp, const EVP_PKEY *pkey,
16                                     int indent, ASN1_PCTX *pctx);
17        int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey,
18                                   int indent, ASN1_PCTX *pctx);
19        int EVP_PKEY_print_private_fp(FILE *fp, const EVP_PKEY *pkey,
20                                      int indent, ASN1_PCTX *pctx);
21        int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey,
22                                  int indent, ASN1_PCTX *pctx);
23        int EVP_PKEY_print_params_fp(FILE *fp, const EVP_PKEY *pkey,
24                                     int indent, ASN1_PCTX *pctx);
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DESCRIPTION

27       The functions EVP_PKEY_print_public(), EVP_PKEY_print_private() and
28       EVP_PKEY_print_params() print out the public, private or parameter
29       components of key pkey respectively. The key is sent to BIO out in
30       human readable form. The parameter indent indicates how far the
31       printout should be indented.
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33       The pctx parameter allows the print output to be finely tuned by using
34       ASN1 printing options. If pctx is set to NULL then default values will
35       be used.
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37       The functions EVP_PKEY_print_public_fp(), EVP_PKEY_print_private_fp()
38       and EVP_PKEY_print_params_fp() do the same as the BIO based functions
39       but use FILE fp instead.
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NOTES

42       Currently no public key algorithms include any options in the pctx
43       parameter.
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45       If the key does not include all the components indicated by the
46       function then only those contained in the key will be printed. For
47       example passing a public key to EVP_PKEY_print_private() will only
48       print the public components.
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RETURN VALUES

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

56       EVP_PKEY_CTX_new(3), EVP_PKEY_keygen(3)
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HISTORY

59       The functions EVP_PKEY_print_public(), EVP_PKEY_print_private(), and
60       EVP_PKEY_print_params() were added in OpenSSL 1.0.0.
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62       The functions EVP_PKEY_print_public_fp(), EVP_PKEY_print_private_fp(),
63       and EVP_PKEY_print_params_fp() were added in OpenSSL 3.0.
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66       Copyright 2006-2021 The OpenSSL Project Authors. All Rights Reserved.
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68       Licensed under the Apache License 2.0 (the "License").  You may not use
69       this file except in compliance with the License.  You can obtain a copy
70       in the file LICENSE in the source distribution or at
71       <https://www.openssl.org/source/license.html>.
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753.0.5                             2022-11-01     EVP_PKEY_PRINT_PRIVATE(3ossl)
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