1=pod 2 3=head1 NAME 4 5d2i_PKCS8PrivateKey_bio, d2i_PKCS8PrivateKey_fp, 6i2d_PKCS8PrivateKey_bio, i2d_PKCS8PrivateKey_fp, 7i2d_PKCS8PrivateKey_nid_bio, i2d_PKCS8PrivateKey_nid_fp - PKCS#8 format private key functions 8 9=head1 SYNOPSIS 10 11 #include <openssl/pem.h> 12 13 EVP_PKEY *d2i_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, void *u); 14 EVP_PKEY *d2i_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, void *u); 15 16 int i2d_PKCS8PrivateKey_bio(BIO *bp, const EVP_PKEY *x, const EVP_CIPHER *enc, 17 char *kstr, int klen, 18 pem_password_cb *cb, void *u); 19 20 int i2d_PKCS8PrivateKey_fp(FILE *fp, const EVP_PKEY *x, const EVP_CIPHER *enc, 21 char *kstr, int klen, 22 pem_password_cb *cb, void *u); 23 24 int i2d_PKCS8PrivateKey_nid_bio(BIO *bp, const EVP_PKEY *x, int nid, 25 char *kstr, int klen, 26 pem_password_cb *cb, void *u); 27 28 int i2d_PKCS8PrivateKey_nid_fp(FILE *fp, const EVP_PKEY *x, int nid, 29 char *kstr, int klen, 30 pem_password_cb *cb, void *u); 31 32=head1 DESCRIPTION 33 34The PKCS#8 functions encode and decode private keys in PKCS#8 format using both 35PKCS#5 v1.5 and PKCS#5 v2.0 password based encryption algorithms. 36 37Other than the use of DER as opposed to PEM these functions are identical to the 38corresponding B<PEM> function as described in L<PEM_read_PrivateKey(3)>. 39 40=head1 NOTES 41 42These functions are currently the only way to store encrypted private keys using DER format. 43 44Currently all the functions use BIOs or FILE pointers, there are no functions which 45work directly on memory: this can be readily worked around by converting the buffers 46to memory BIOs, see L<BIO_s_mem(3)> for details. 47 48These functions make no assumption regarding the pass phrase received from the 49password callback. 50It will simply be treated as a byte sequence. 51 52=head1 RETURN VALUES 53 54d2i_PKCS8PrivateKey_bio() and d2i_PKCS8PrivateKey_fp() return a valid B<EVP_PKEY> 55structure or NULL if an error occurred. 56 57i2d_PKCS8PrivateKey_bio(), i2d_PKCS8PrivateKey_fp(), i2d_PKCS8PrivateKey_nid_bio() 58and i2d_PKCS8PrivateKey_nid_fp() return 1 on success or 0 on error. 59 60=head1 SEE ALSO 61 62L<PEM_read_PrivateKey(3)>, 63L<passphrase-encoding(7)> 64 65=head1 COPYRIGHT 66 67Copyright 2002-2023 The OpenSSL Project Authors. All Rights Reserved. 68 69Licensed under the Apache License 2.0 (the "License"). You may not use 70this file except in compliance with the License. You can obtain a copy 71in the file LICENSE in the source distribution or at 72L<https://www.openssl.org/source/license.html>. 73 74=cut 75