5 d2i_PrivateKey, d2i_AutoPrivateKey, i2d_PrivateKey,
6 d2i_PrivateKey_bio, d2i_PrivateKey_fp
7 - decode and encode functions for reading and saving EVP_PKEY structures
11 #include <openssl/evp.h>
13 EVP_PKEY *d2i_PrivateKey(int type, EVP_PKEY **a, const unsigned char **pp,
15 EVP_PKEY *d2i_AutoPrivateKey(EVP_PKEY **a, const unsigned char **pp,
17 int i2d_PrivateKey(EVP_PKEY *a, unsigned char **pp);
19 EVP_PKEY *d2i_PrivateKey_bio(BIO *bp, EVP_PKEY **a);
20 EVP_PKEY *d2i_PrivateKey_fp(FILE *fp, EVP_PKEY **a)
24 d2i_PrivateKey() decodes a private key using algorithm B<type>. It attempts to
25 use any key specific format or PKCS#8 unencrypted PrivateKeyInfo format. The
26 B<type> parameter should be a public key algorithm constant such as
27 B<EVP_PKEY_RSA>. An error occurs if the decoded key does not match B<type>.
29 d2i_AutoPrivateKey() is similar to d2i_PrivateKey() except it attempts to
30 automatically detect the private key format.
32 i2d_PrivateKey() encodes B<key>. It uses a key specific format or, if none is
33 defined for that key type, PKCS#8 unencrypted PrivateKeyInfo format.
35 These functions are similar to the d2i_X509() functions; see L<d2i_X509(3)>.
39 All these functions use DER format and unencrypted keys. Applications wishing
40 to encrypt or decrypt private keys should use other functions such as
41 d2i_PKC8PrivateKey() instead.
43 If the B<*a> is not NULL when calling d2i_PrivateKey() or d2i_AutoPrivateKey()
44 (i.e. an existing structure is being reused) and the key format is PKCS#8
45 then B<*a> will be freed and replaced on a successful call.
49 d2i_PrivateKey() and d2i_AutoPrivateKey() return a valid B<EVP_KEY> structure
50 or B<NULL> if an error occurs. The error code can be obtained by calling
53 i2d_PrivateKey() returns the number of bytes successfully encoded or a
54 negative value if an error occurs. The error code can be obtained by calling
60 L<d2i_PKCS8PrivateKey(3)>
64 Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
66 Licensed under the OpenSSL license (the "License"). You may not use
67 this file except in compliance with the License. You can obtain a copy
68 in the file LICENSE in the source distribution or at
69 L<https://www.openssl.org/source/license.html>.