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 63 #if defined(__cplusplus) 64 extern "C" { 65 #endif 66 67 68 /* Default implementations of RSA operations. */ 69 70 extern const RSA_METHOD RSA_default_method; 71 72 size_t rsa_default_size(const RSA *rsa); 73 int rsa_default_encrypt(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out, 74 const uint8_t *in, size_t in_len, int padding); 75 int 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); 78 int 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); 80 int rsa_default_verify_raw(RSA *rsa, size_t *out_len, uint8_t *out, 81 size_t max_out, const uint8_t *in, size_t in_len, 82 int padding); 83 int rsa_default_private_transform(RSA *rsa, uint8_t *out, const uint8_t *in, 84 size_t len); 85 int rsa_default_multi_prime_keygen(RSA *rsa, int bits, int num_primes, 86 BIGNUM *e_value, BN_GENCB *cb); 87 int rsa_default_keygen(RSA *rsa, int bits, BIGNUM *e_value, BN_GENCB *cb); 88 89 90 #define RSA_PKCS1_PADDING_SIZE 11 91 92 93 /* BN_BLINDING flags */ 94 #define BN_BLINDING_NO_UPDATE 0x00000001 95 #define BN_BLINDING_NO_RECREATE 0x00000002 96 97 BN_BLINDING *BN_BLINDING_new(const BIGNUM *A, const BIGNUM *Ai, BIGNUM *mod); 98 void BN_BLINDING_free(BN_BLINDING *b); 99 int BN_BLINDING_update(BN_BLINDING *b, BN_CTX *ctx); 100 int BN_BLINDING_convert(BIGNUM *n, BN_BLINDING *b, BN_CTX *ctx); 101 int BN_BLINDING_invert(BIGNUM *n, BN_BLINDING *b, BN_CTX *ctx); 102 int BN_BLINDING_convert_ex(BIGNUM *n, BIGNUM *r, BN_BLINDING *b, BN_CTX *); 103 int BN_BLINDING_invert_ex(BIGNUM *n, const BIGNUM *r, BN_BLINDING *b, BN_CTX *); 104 unsigned long BN_BLINDING_get_flags(const BN_BLINDING *); 105 void BN_BLINDING_set_flags(BN_BLINDING *, unsigned long); 106 BN_BLINDING *BN_BLINDING_create_param( 107 BN_BLINDING *b, const BIGNUM *e, BIGNUM *m, BN_CTX *ctx, 108 int (*bn_mod_exp)(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, 109 const BIGNUM *m, BN_CTX *ctx, const BN_MONT_CTX *mont), 110 const BN_MONT_CTX *mont); 111 BN_BLINDING *rsa_setup_blinding(RSA *rsa, BN_CTX *in_ctx); 112 113 114 int RSA_padding_add_PKCS1_type_1(uint8_t *to, unsigned to_len, 115 const uint8_t *from, unsigned from_len); 116 int RSA_padding_check_PKCS1_type_1(uint8_t *to, unsigned to_len, 117 const uint8_t *from, unsigned from_len); 118 int RSA_padding_add_PKCS1_type_2(uint8_t *to, unsigned to_len, 119 const uint8_t *from, unsigned from_len); 120 int RSA_padding_check_PKCS1_type_2(uint8_t *to, unsigned to_len, 121 const uint8_t *from, unsigned from_len); 122 int RSA_padding_add_PKCS1_OAEP_mgf1(uint8_t *to, unsigned to_len, 123 const uint8_t *from, unsigned from_len, 124 const uint8_t *param, unsigned plen, 125 const EVP_MD *md, const EVP_MD *mgf1md); 126 int RSA_padding_check_PKCS1_OAEP_mgf1(uint8_t *to, unsigned to_len, 127 const uint8_t *from, unsigned from_len, 128 const uint8_t *param, unsigned plen, 129 const EVP_MD *md, const EVP_MD *mgf1md); 130 int RSA_padding_add_none(uint8_t *to, unsigned to_len, const uint8_t *from, 131 unsigned from_len); 132 133 /* RSA_private_transform calls either the method-specific |private_transform| 134 * function (if given) or the generic one. See the comment for 135 * |private_transform| in |rsa_meth_st|. */ 136 int RSA_private_transform(RSA *rsa, uint8_t *out, const uint8_t *in, 137 size_t len); 138 139 140 /* RSA_additional_prime contains information about the third, forth etc prime 141 * in a multi-prime RSA key. */ 142 typedef struct RSA_additional_prime_st { 143 BIGNUM *prime; 144 /* exp is d^{prime-1} mod prime */ 145 BIGNUM *exp; 146 /* coeff is such that r×coeff ≡ 1 mod prime. */ 147 BIGNUM *coeff; 148 149 /* Values below here are not in the ASN.1 serialisation. */ 150 151 /* r is the product of all primes (including p and q) prior to this one. */ 152 BIGNUM *r; 153 /* mont is a |BN_MONT_CTX| modulo |prime|. */ 154 BN_MONT_CTX *mont; 155 } RSA_additional_prime; 156 157 void RSA_additional_prime_free(RSA_additional_prime *ap); 158 159 160 #if defined(__cplusplus) 161 } /* extern C */ 162 #endif 163 164 #endif /* OPENSSL_HEADER_RSA_INTERNAL_H */ 165