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| 125 | .\" |
| 126 | .IX Title "EVP_PKEY_print_private 3" |
| 127 | .TH EVP_PKEY_print_private 3 "2011-02-08" "1.0.0d" "OpenSSL" |
| 128 | .\" For nroff, turn off justification. Always turn off hyphenation; it makes |
| 129 | .\" way too many mistakes in technical documents. |
| 130 | .if n .ad l |
| 131 | .nh |
| 132 | .SH "NAME" |
| 133 | EVP_PKEY_print_public, EVP_PKEY_print_private, EVP_PKEY_print_params \- public key algorithm printing routines. |
| 134 | .SH "SYNOPSIS" |
| 135 | .IX Header "SYNOPSIS" |
| 136 | .Vb 1 |
| 137 | \& #include <openssl/evp.h> |
| 138 | \& |
| 139 | \& int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey, |
| 140 | \& int indent, ASN1_PCTX *pctx); |
| 141 | \& int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey, |
| 142 | \& int indent, ASN1_PCTX *pctx); |
| 143 | \& int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey, |
| 144 | \& int indent, ASN1_PCTX *pctx); |
| 145 | .Ve |
| 146 | .SH "DESCRIPTION" |
| 147 | .IX Header "DESCRIPTION" |
| 148 | The functions \fIEVP_PKEY_print_public()\fR, \fIEVP_PKEY_print_private()\fR and |
| 149 | \&\fIEVP_PKEY_print_params()\fR print out the public, private or parameter components |
| 150 | of key \fBpkey\fR respectively. The key is sent to \s-1BIO\s0 \fBout\fR in human readable |
| 151 | form. The parameter \fBindent\fR indicated how far the printout should be indented. |
| 152 | .PP |
| 153 | The \fBpctx\fR parameter allows the print output to be finely tuned by using |
| 154 | \&\s-1ASN1\s0 printing options. If \fBpctx\fR is set to \s-1NULL\s0 then default values will |
| 155 | be used. |
| 156 | .SH "NOTES" |
| 157 | .IX Header "NOTES" |
| 158 | Currently no public key algorithms include any options in the \fBpctx\fR parameter |
| 159 | parameter. |
| 160 | .PP |
| 161 | If the key does not include all the components indicated by the function then |
| 162 | only those contained in the key will be printed. For example passing a public |
| 163 | key to \fIEVP_PKEY_print_private()\fR will only print the public components. |
| 164 | .SH "RETURN VALUES" |
| 165 | .IX Header "RETURN VALUES" |
| 166 | These functions all return 1 for success and 0 or a negative value for failure. |
| 167 | In particular a return value of \-2 indicates the operation is not supported by |
| 168 | the public key algorithm. |
| 169 | .SH "SEE ALSO" |
| 170 | .IX Header "SEE ALSO" |
| 171 | \&\fIEVP_PKEY_CTX_new\fR\|(3), |
| 172 | \&\fIEVP_PKEY_keygen\fR\|(3) |
| 173 | .SH "HISTORY" |
| 174 | .IX Header "HISTORY" |
| 175 | These functions were first added to OpenSSL 1.0.0. |