1=pod
2
3=head1 NAME
4
5DECLARE_PEM_rw,
6PEM_read_CMS,
7PEM_read_bio_CMS,
8PEM_write_CMS,
9PEM_write_bio_CMS,
10PEM_write_DHxparams,
11PEM_write_bio_DHxparams,
12PEM_read_ECPKParameters,
13PEM_read_bio_ECPKParameters,
14PEM_write_ECPKParameters,
15PEM_write_bio_ECPKParameters,
16PEM_read_ECPrivateKey,
17PEM_write_ECPrivateKey,
18PEM_write_bio_ECPrivateKey,
19PEM_read_EC_PUBKEY,
20PEM_read_bio_EC_PUBKEY,
21PEM_write_EC_PUBKEY,
22PEM_write_bio_EC_PUBKEY,
23PEM_read_NETSCAPE_CERT_SEQUENCE,
24PEM_read_bio_NETSCAPE_CERT_SEQUENCE,
25PEM_write_NETSCAPE_CERT_SEQUENCE,
26PEM_write_bio_NETSCAPE_CERT_SEQUENCE,
27PEM_read_PKCS8,
28PEM_read_bio_PKCS8,
29PEM_write_PKCS8,
30PEM_write_bio_PKCS8,
31PEM_write_PKCS8_PRIV_KEY_INFO,
32PEM_read_bio_PKCS8_PRIV_KEY_INFO,
33PEM_read_PKCS8_PRIV_KEY_INFO,
34PEM_write_bio_PKCS8_PRIV_KEY_INFO,
35PEM_read_SSL_SESSION,
36PEM_read_bio_SSL_SESSION,
37PEM_write_SSL_SESSION,
38PEM_write_bio_SSL_SESSION,
39PEM_read_X509_PUBKEY,
40PEM_read_bio_X509_PUBKEY,
41PEM_write_X509_PUBKEY,
42PEM_write_bio_X509_PUBKEY
43- PEM object encoding routines
44
45=head1 SYNOPSIS
46
47=for openssl generic
48
49 #include <openssl/pem.h>
50
51 DECLARE_PEM_rw(name, TYPE)
52
53 TYPE *PEM_read_TYPE(FILE *fp, TYPE **a, pem_password_cb *cb, void *u);
54 TYPE *PEM_read_bio_TYPE(BIO *bp, TYPE **a, pem_password_cb *cb, void *u);
55 int PEM_write_TYPE(FILE *fp, const TYPE *a);
56 int PEM_write_bio_TYPE(BIO *bp, const TYPE *a);
57
58The following functions have been deprecated since OpenSSL 3.0, and can be
59hidden entirely by defining B<OPENSSL_API_COMPAT> with a suitable version value,
60see L<openssl_user_macros(7)>:
61
62 #include <openssl/pem.h>
63
64 int PEM_write_DHxparams(FILE *out, const DH *dh);
65 int PEM_write_bio_DHxparams(BIO *out, const DH *dh);
66 EC_GROUP *PEM_read_ECPKParameters(FILE *fp, EC_GROUP **x, pem_password_cb *cb, void *u);
67 EC_GROUP *PEM_read_bio_ECPKParameters(BIO *bp, EC_GROUP **x, pem_password_cb *cb, void *u);
68 int PEM_write_ECPKParameters(FILE *out, const EC_GROUP *x);
69 int PEM_write_bio_ECPKParameters(BIO *out, const EC_GROUP *x),
70
71 EC_KEY *PEM_read_EC_PUBKEY(FILE *fp, EC_KEY **x, pem_password_cb *cb, void *u);
72 EC_KEY *PEM_read_bio_EC_PUBKEY(BIO *bp, EC_KEY **x, pem_password_cb *cb, void *u);
73 int PEM_write_EC_PUBKEY(FILE *out, const EC_KEY *x);
74 int PEM_write_bio_EC_PUBKEY(BIO *out, const EC_KEY *x);
75
76 EC_KEY *PEM_read_ECPrivateKey(FILE *out, EC_KEY **x, pem_password_cb *cb, void *u);
77 EC_KEY *PEM_read_bio_ECPrivateKey(BIO *out, EC_KEY **x, pem_password_cb *cb, void *u);
78 int PEM_write_ECPrivateKey(FILE *out, const EC_KEY *x, const EVP_CIPHER *enc,
79                            const unsigned char *kstr, int klen,
80                            pem_password_cb *cb, void *u);
81 int PEM_write_bio_ECPrivateKey(BIO *out, const EC_KEY *x, const EVP_CIPHER *enc,
82                                const unsigned char *kstr, int klen,
83                                pem_password_cb *cb, void *u);
84
85=head1 DESCRIPTION
86
87All of the functions described on this page are deprecated.
88Applications should use OSSL_ENCODER_to_bio() and OSSL_DECODER_from_bio()
89instead.
90
91In the description below, B<I<TYPE>> is used
92as a placeholder for any of the OpenSSL datatypes, such as B<X509>.
93The macro B<DECLARE_PEM_rw> expands to the set of declarations shown in
94the next four lines of the synopsis.
95
96These routines convert between local instances of ASN1 datatypes and
97the PEM encoding.  For more information on the templates, see
98L<ASN1_ITEM(3)>.  For more information on the lower-level routines used
99by the functions here, see L<PEM_read(3)>.
100
101B<PEM_read_I<TYPE>>() reads a PEM-encoded object of B<I<TYPE>> from the file
102I<fp> and returns it.  The I<cb> and I<u> parameters are as described in
103L<pem_password_cb(3)>.
104
105B<PEM_read_bio_I<TYPE>>() is similar to B<PEM_read_I<TYPE>>() but reads from
106the BIO I<bp>.
107
108B<PEM_write_I<TYPE>>() writes the PEM encoding of the object I<a> to the file
109I<fp>.
110
111B<PEM_write_bio_I<TYPE>>() similarly writes to the BIO I<bp>.
112
113=head1 NOTES
114
115These functions make no assumption regarding the pass phrase received from the
116password callback.
117It will simply be treated as a byte sequence.
118
119=head1 RETURN VALUES
120
121B<PEM_read_I<TYPE>>() and B<PEM_read_bio_I<TYPE>>() return a pointer to an
122allocated object, which should be released by calling B<I<TYPE>_free>(), or
123NULL on error.
124
125B<PEM_write_I<TYPE>>() and B<PEM_write_bio_I<TYPE>>() return 1 for success or 0 for failure.
126
127=head1 SEE ALSO
128
129L<PEM_read(3)>,
130L<passphrase-encoding(7)>
131
132=head1 HISTORY
133
134The functions PEM_write_DHxparams(), PEM_write_bio_DHxparams(),
135PEM_read_ECPKParameters(), PEM_read_bio_ECPKParameters(),
136PEM_write_ECPKParameters(), PEM_write_bio_ECPKParameters(),
137PEM_read_EC_PUBKEY(), PEM_read_bio_EC_PUBKEY(),
138PEM_write_EC_PUBKEY(), PEM_write_bio_EC_PUBKEY(),
139PEM_read_ECPrivateKey(), PEM_read_bio_ECPrivateKey(),
140PEM_write_ECPrivateKey() and PEM_write_bio_ECPrivateKey()
141were deprecated in OpenSSL 3.0.
142
143=head1 COPYRIGHT
144
145Copyright 1998-2023 The OpenSSL Project Authors. All Rights Reserved.
146
147Licensed under the Apache License 2.0 (the "License").  You may not use
148this file except in compliance with the License.  You can obtain a copy
149in the file LICENSE in the source distribution or at
150L<https://www.openssl.org/source/license.html>.
151
152=cut
153