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git.proxmox.com Git - efi-boot-shim.git/blob - Cryptlib/OpenSSL/crypto/evp/evp_key.c
1 /* crypto/evp/evp_key.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
61 #include <openssl/x509.h>
62 #include <openssl/objects.h>
63 #include <openssl/evp.h>
64 #include <openssl/ui.h>
67 /* should be init to zeros. */
68 static char prompt_string
[80];
70 void EVP_set_pw_prompt(const char *prompt
)
73 prompt_string
[0] = '\0';
75 strncpy(prompt_string
, prompt
, 79);
76 prompt_string
[79] = '\0';
80 char *EVP_get_pw_prompt(void)
82 if (prompt_string
[0] == '\0')
85 return (prompt_string
);
89 * For historical reasons, the standard function for reading passwords is in
90 * the DES library -- if someone ever wants to disable DES, this function
93 int EVP_read_pw_string(char *buf
, int len
, const char *prompt
, int verify
)
95 return EVP_read_pw_string_min(buf
, 0, len
, prompt
, verify
);
98 int EVP_read_pw_string_min(char *buf
, int min
, int len
, const char *prompt
,
105 if ((prompt
== NULL
) && (prompt_string
[0] != '\0'))
106 prompt
= prompt_string
;
110 UI_add_input_string(ui
, prompt
, 0, buf
, min
,
111 (len
>= BUFSIZ
) ? BUFSIZ
- 1 : len
);
113 UI_add_verify_string(ui
, prompt
, 0,
114 buff
, min
, (len
>= BUFSIZ
) ? BUFSIZ
- 1 : len
,
116 ret
= UI_process(ui
);
118 OPENSSL_cleanse(buff
, BUFSIZ
);
121 #endif /* OPENSSL_NO_UI */
123 int EVP_BytesToKey(const EVP_CIPHER
*type
, const EVP_MD
*md
,
124 const unsigned char *salt
, const unsigned char *data
,
125 int datal
, int count
, unsigned char *key
,
129 unsigned char md_buf
[EVP_MAX_MD_SIZE
];
130 int niv
, nkey
, addmd
= 0;
131 unsigned int mds
= 0, i
;
133 nkey
= type
->key_len
;
135 OPENSSL_assert(nkey
<= EVP_MAX_KEY_LENGTH
);
136 OPENSSL_assert(niv
<= EVP_MAX_IV_LENGTH
);
143 if (!EVP_DigestInit_ex(&c
, md
, NULL
))
146 if (!EVP_DigestUpdate(&c
, &(md_buf
[0]), mds
))
148 if (!EVP_DigestUpdate(&c
, data
, datal
))
151 if (!EVP_DigestUpdate(&c
, salt
, PKCS5_SALT_LEN
))
153 if (!EVP_DigestFinal_ex(&c
, &(md_buf
[0]), &mds
))
156 for (i
= 1; i
< (unsigned int)count
; i
++) {
157 if (!EVP_DigestInit_ex(&c
, md
, NULL
))
159 if (!EVP_DigestUpdate(&c
, &(md_buf
[0]), mds
))
161 if (!EVP_DigestFinal_ex(&c
, &(md_buf
[0]), &mds
))
172 *(key
++) = md_buf
[i
];
177 if (niv
&& (i
!= mds
)) {
189 if ((nkey
== 0) && (niv
== 0))
194 EVP_MD_CTX_cleanup(&c
);
195 OPENSSL_cleanse(md_buf
, sizeof(md_buf
));