5 d2i_PrivateKey, d2i_PublicKey, d2i_AutoPrivateKey,
6 i2d_PrivateKey, i2d_PublicKey,
7 d2i_PrivateKey_bio, d2i_PrivateKey_fp
8 - decode and encode functions for reading and saving EVP_PKEY structures
12 #include <openssl/evp.h>
14 EVP_PKEY *d2i_PrivateKey(int type, EVP_PKEY **a, const unsigned char **pp,
16 EVP_PKEY *d2i_PublicKey(int type, EVP_PKEY **a, const unsigned char **pp,
18 EVP_PKEY *d2i_AutoPrivateKey(EVP_PKEY **a, const unsigned char **pp,
20 int i2d_PrivateKey(EVP_PKEY *a, unsigned char **pp);
21 int i2d_PublicKey(EVP_PKEY *a, unsigned char **pp);
23 EVP_PKEY *d2i_PrivateKey_bio(BIO *bp, EVP_PKEY **a);
24 EVP_PKEY *d2i_PrivateKey_fp(FILE *fp, EVP_PKEY **a)
28 d2i_PrivateKey() decodes a private key using algorithm B<type>. It attempts to
29 use any key specific format or PKCS#8 unencrypted PrivateKeyInfo format. The
30 B<type> parameter should be a public key algorithm constant such as
31 B<EVP_PKEY_RSA>. An error occurs if the decoded key does not match B<type>.
32 d2i_PublicKey() does the same for public keys.
34 d2i_AutoPrivateKey() is similar to d2i_PrivateKey() except it attempts to
35 automatically detect the private key format.
37 i2d_PrivateKey() encodes B<key>. It uses a key specific format or, if none is
38 defined for that key type, PKCS#8 unencrypted PrivateKeyInfo format.
39 i2d_PublicKey() does the same for public keys.
41 These functions are similar to the d2i_X509() functions; see L<d2i_X509(3)>.
45 All these functions use DER format and unencrypted keys. Applications wishing
46 to encrypt or decrypt private keys should use other functions such as
47 d2i_PKCS8PrivateKey() instead.
49 If the B<*a> is not NULL when calling d2i_PrivateKey() or d2i_AutoPrivateKey()
50 (i.e. an existing structure is being reused) and the key format is PKCS#8
51 then B<*a> will be freed and replaced on a successful call.
55 d2i_PrivateKey() and d2i_AutoPrivateKey() return a valid B<EVP_KEY> structure
56 or B<NULL> if an error occurs. The error code can be obtained by calling
59 i2d_PrivateKey() returns the number of bytes successfully encoded or a
60 negative value if an error occurs. The error code can be obtained by calling
66 L<d2i_PKCS8PrivateKey_bio(3)>
70 Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
72 Licensed under the OpenSSL license (the "License"). You may not use
73 this file except in compliance with the License. You can obtain a copy
74 in the file LICENSE in the source distribution or at
75 L<https://www.openssl.org/source/license.html>.