1/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
2 * All rights reserved.
3 *
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
7 *
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
14 *
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
21 *
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
24 * are met:
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50 * SUCH DAMAGE.
51 *
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.] */
56
57#ifndef OPENSSL_HEADER_RSA_INTERNAL_H
58#define OPENSSL_HEADER_RSA_INTERNAL_H
59
60#include <openssl/base.h>
61
62#include <openssl/bn.h>
63
64
65#if defined(__cplusplus)
66extern "C" {
67#endif
68
69
70// Default implementations of RSA operations.
71
72const RSA_METHOD *RSA_default_method(void);
73
74size_t rsa_default_size(const RSA *rsa);
75int rsa_default_sign_raw(RSA *rsa, size_t *out_len, uint8_t *out,
76 size_t max_out, const uint8_t *in, size_t in_len,
77 int padding);
78int rsa_default_decrypt(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out,
79 const uint8_t *in, size_t in_len, int padding);
80int rsa_default_private_transform(RSA *rsa, uint8_t *out, const uint8_t *in,
81 size_t len);
82
83
84BN_BLINDING *BN_BLINDING_new(void);
85void BN_BLINDING_free(BN_BLINDING *b);
86int BN_BLINDING_convert(BIGNUM *n, BN_BLINDING *b, const BIGNUM *e,
87 const BN_MONT_CTX *mont_ctx, BN_CTX *ctx);
88int BN_BLINDING_invert(BIGNUM *n, const BN_BLINDING *b, BN_MONT_CTX *mont_ctx,
89 BN_CTX *ctx);
90
91
92int RSA_padding_add_PKCS1_type_1(uint8_t *to, size_t to_len,
93 const uint8_t *from, size_t from_len);
94int RSA_padding_check_PKCS1_type_1(uint8_t *out, size_t *out_len,
95 size_t max_out, const uint8_t *from,
96 size_t from_len);
97int RSA_padding_add_PKCS1_type_2(uint8_t *to, size_t to_len,
98 const uint8_t *from, size_t from_len);
99int RSA_padding_check_PKCS1_type_2(uint8_t *out, size_t *out_len,
100 size_t max_out, const uint8_t *from,
101 size_t from_len);
102int RSA_padding_check_PKCS1_OAEP_mgf1(uint8_t *out, size_t *out_len,
103 size_t max_out, const uint8_t *from,
104 size_t from_len, const uint8_t *param,
105 size_t param_len, const EVP_MD *md,
106 const EVP_MD *mgf1md);
107int RSA_padding_add_none(uint8_t *to, size_t to_len, const uint8_t *from,
108 size_t from_len);
109
110// RSA_private_transform calls either the method-specific |private_transform|
111// function (if given) or the generic one. See the comment for
112// |private_transform| in |rsa_meth_st|.
113int RSA_private_transform(RSA *rsa, uint8_t *out, const uint8_t *in,
114 size_t len);
115
116
117// This constant is exported for test purposes.
118extern const BN_ULONG kBoringSSLRSASqrtTwo[];
119extern const size_t kBoringSSLRSASqrtTwoLen;
120
121
122#if defined(__cplusplus)
123} // extern C
124#endif
125
126#endif // OPENSSL_HEADER_RSA_INTERNAL_H
127