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[thirdparty/openssl.git] / crypto / evp / evp_locl.h
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1/*
2 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
3 * 2000.
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4 */
5/* ====================================================================
6 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
0f113f3e 13 * notice, this list of conditions and the following disclaimer.
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14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58
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59/* EVP_MD_CTX related stuff */
60
61struct evp_md_ctx_st {
62 const EVP_MD *digest;
63 ENGINE *engine; /* functional reference if 'digest' is
64 * ENGINE-provided */
65 unsigned long flags;
66 void *md_data;
67 /* Public key context for sign/verify */
68 EVP_PKEY_CTX *pctx;
69 /* Update function: usually copied from EVP_MD */
70 int (*update) (EVP_MD_CTX *ctx, const void *data, size_t count);
71} /* EVP_MD_CTX */ ;
72
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73struct evp_cipher_ctx_st {
74 const EVP_CIPHER *cipher;
75 ENGINE *engine; /* functional reference if 'cipher' is
76 * ENGINE-provided */
77 int encrypt; /* encrypt or decrypt */
78 int buf_len; /* number we have left */
79 unsigned char oiv[EVP_MAX_IV_LENGTH]; /* original iv */
80 unsigned char iv[EVP_MAX_IV_LENGTH]; /* working iv */
81 unsigned char buf[EVP_MAX_BLOCK_LENGTH]; /* saved partial block */
82 int num; /* used by cfb/ofb/ctr mode */
83 /* FIXME: Should this even exist? It appears unused */
84 void *app_data; /* application stuff */
85 int key_len; /* May change for variable length cipher */
86 unsigned long flags; /* Various flags */
87 void *cipher_data; /* per EVP data */
88 int final_used;
89 int block_mask;
90 unsigned char final[EVP_MAX_BLOCK_LENGTH]; /* possible final block */
91} /* EVP_CIPHER_CTX */ ;
92
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93int PKCS5_v2_PBKDF2_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass,
94 int passlen, ASN1_TYPE *param,
95 const EVP_CIPHER *c, const EVP_MD *md,
96 int en_de);
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97
98struct evp_Encode_Ctx_st {
99 /* number saved in a partial encode/decode */
100 int num;
101 /*
102 * The length is either the output line length (in input bytes) or the
103 * shortest input line length that is ok. Once decoding begins, the
104 * length is adjusted up each time a longer line is decoded
105 */
106 int length;
107 /* data to encode */
108 unsigned char enc_data[80];
109 /* number read on current line */
110 int line_num;
111 int expect_nl;
112};
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113
114typedef struct evp_pbe_st EVP_PBE_CTL;
115DEFINE_STACK_OF(EVP_PBE_CTL)