181 lines
5.7 KiB
Groff
181 lines
5.7 KiB
Groff
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.\" ========================================================================
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.\"
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.IX Title "EVP_PKEY_print_private 3"
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.TH EVP_PKEY_print_private 3 "2017-05-25" "1.0.2l" "OpenSSL"
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.\" For nroff, turn off justification. Always turn off hyphenation; it makes
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.\" way too many mistakes in technical documents.
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.if n .ad l
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.nh
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.SH "NAME"
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EVP_PKEY_print_public, EVP_PKEY_print_private, EVP_PKEY_print_params \- public key algorithm printing routines.
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.SH "SYNOPSIS"
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.IX Header "SYNOPSIS"
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.Vb 1
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\& #include <openssl/evp.h>
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\&
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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_private(BIO *out, 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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.Ve
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.SH "DESCRIPTION"
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.IX Header "DESCRIPTION"
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The functions \fIEVP_PKEY_print_public()\fR, \fIEVP_PKEY_print_private()\fR and
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\&\fIEVP_PKEY_print_params()\fR print out the public, private or parameter components
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of key \fBpkey\fR respectively. The key is sent to \s-1BIO \s0\fBout\fR in human readable
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form. The parameter \fBindent\fR indicated how far the printout should be indented.
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.PP
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The \fBpctx\fR parameter allows the print output to be finely tuned by using
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\&\s-1ASN1\s0 printing options. If \fBpctx\fR is set to \s-1NULL\s0 then default values will
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be used.
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.SH "NOTES"
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.IX Header "NOTES"
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Currently no public key algorithms include any options in the \fBpctx\fR parameter
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parameter.
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.PP
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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 \fIEVP_PKEY_print_private()\fR will only print the public components.
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.SH "RETURN VALUES"
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.IX Header "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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.SH "SEE ALSO"
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.IX Header "SEE ALSO"
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\&\fIEVP_PKEY_CTX_new\fR\|(3),
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\&\fIEVP_PKEY_keygen\fR\|(3)
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.SH "HISTORY"
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.IX Header "HISTORY"
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These functions were first added to OpenSSL 1.0.0.
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