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✏️ Editing: i2d_PKCS8PrivateKey_fp.3

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.\"
.IX Title "D2I_PKCS8PRIVATEKEY_BIO 3"
.TH D2I_PKCS8PRIVATEKEY_BIO 3 "2023-09-11" "1.1.1w" "OpenSSL"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
d2i_PKCS8PrivateKey_bio, d2i_PKCS8PrivateKey_fp, i2d_PKCS8PrivateKey_bio, i2d_PKCS8PrivateKey_fp, i2d_PKCS8PrivateKey_nid_bio, i2d_PKCS8PrivateKey_nid_fp \- PKCS#8 format private key functions
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/evp.h>
\&
\& EVP_PKEY *d2i_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, void *u);
\& EVP_PKEY *d2i_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, void *u);
\&
\& int i2d_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
\&                             char *kstr, int klen,
\&                             pem_password_cb *cb, void *u);
\&
\& int i2d_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
\&                            char *kstr, int klen,
\&                            pem_password_cb *cb, void *u);
\&
\& int i2d_PKCS8PrivateKey_nid_bio(BIO *bp, EVP_PKEY *x, int nid,
\&                                 char *kstr, int klen,
\&                                 pem_password_cb *cb, void *u);
\&
\& int i2d_PKCS8PrivateKey_nid_fp(FILE *fp, EVP_PKEY *x, int nid,
\&                                char *kstr, int klen,
\&                                pem_password_cb *cb, void *u);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
The PKCS#8 functions encode and decode private keys in PKCS#8 format using both
PKCS#5 v1.5 and PKCS#5 v2.0 password based encryption algorithms.
.PP
Other than the use of \s-1DER\s0 as opposed to \s-1PEM\s0 these functions are identical to the
corresponding \fB\s-1PEM\s0\fR function as described in \fBPEM_read_PrivateKey\fR\|(3).
.SH "NOTES"
.IX Header "NOTES"
These functions are currently the only way to store encrypted private keys using \s-1DER\s0 format.
.PP
Currently all the functions use BIOs or \s-1FILE\s0 pointers, there are no functions which
work directly on memory: this can be readily worked around by converting the buffers
to memory BIOs, see \fBBIO_s_mem\fR\|(3) for details.
.PP
These functions make no assumption regarding the pass phrase received from the
password callback.
It will simply be treated as a byte sequence.
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
\&\fBd2i_PKCS8PrivateKey_bio()\fR and \fBd2i_PKCS8PrivateKey_fp()\fR return a valid \fB\s-1EVP_PKEY\s0\fR
structure or \s-1NULL\s0 if an error occurred.
.PP
\&\fBi2d_PKCS8PrivateKey_bio()\fR, \fBi2d_PKCS8PrivateKey_fp()\fR, \fBi2d_PKCS8PrivateKey_nid_bio()\fR
and \fBi2d_PKCS8PrivateKey_nid_fp()\fR return 1 on success or 0 on error.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBPEM_read_PrivateKey\fR\|(3),
\&\fBpassphrase\-encoding\fR\|(7)
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2002\-2018 The OpenSSL Project Authors. All Rights Reserved.
.PP
Licensed under the OpenSSL license (the \*(L"License\*(R").  You may not use
this file except in compliance with the License.  You can obtain a copy
in the file \s-1LICENSE\s0 in the source distribution or at
<https://www.openssl.org/source/license.html>.

MR SKB