617804adc5
This removes a hard dependency on |BN_mod_exp|, which will allow the linker to drop it in programs that don't use other features that require it. Also, remove the |mont| member of |bn_blinding_st| in favor of having callers pass it when necssaary. The |mont| member was a weak reference, and weak references tend to be error-prone. Finally, reduce the scope of some parts of the blinding code to |static|. Change-Id: I16d8ccc2d6d950c1bb40377988daf1a377a21fe6 Reviewed-on: https://boringssl-review.googlesource.com/7111 Reviewed-by: David Benjamin <davidben@google.com>
152 lines
7.0 KiB
C
152 lines
7.0 KiB
C
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.] */
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#ifndef OPENSSL_HEADER_RSA_INTERNAL_H
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#define OPENSSL_HEADER_RSA_INTERNAL_H
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#include <openssl/base.h>
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#if defined(__cplusplus)
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extern "C" {
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#endif
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/* Default implementations of RSA operations. */
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extern const RSA_METHOD RSA_default_method;
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size_t rsa_default_size(const RSA *rsa);
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int rsa_default_encrypt(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out,
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const uint8_t *in, size_t in_len, int padding);
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int rsa_default_sign_raw(RSA *rsa, size_t *out_len, uint8_t *out,
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size_t max_out, const uint8_t *in, size_t in_len,
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int padding);
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int rsa_default_decrypt(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out,
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const uint8_t *in, size_t in_len, int padding);
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int rsa_default_verify_raw(RSA *rsa, size_t *out_len, uint8_t *out,
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size_t max_out, const uint8_t *in, size_t in_len,
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int padding);
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int rsa_default_private_transform(RSA *rsa, uint8_t *out, const uint8_t *in,
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size_t len);
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int rsa_default_multi_prime_keygen(RSA *rsa, int bits, int num_primes,
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BIGNUM *e_value, BN_GENCB *cb);
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int rsa_default_keygen(RSA *rsa, int bits, BIGNUM *e_value, BN_GENCB *cb);
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#define RSA_PKCS1_PADDING_SIZE 11
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BN_BLINDING *BN_BLINDING_new(const BIGNUM *A, const BIGNUM *Ai, BIGNUM *mod);
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void BN_BLINDING_free(BN_BLINDING *b);
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int BN_BLINDING_convert(BIGNUM *n, BN_BLINDING *b, BN_CTX *ctx,
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const BN_MONT_CTX *mont_ctx);
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int BN_BLINDING_invert(BIGNUM *n, const BN_BLINDING *b, BN_CTX *ctx);
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BN_BLINDING *rsa_setup_blinding(RSA *rsa, BN_CTX *in_ctx);
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int RSA_padding_add_PKCS1_type_1(uint8_t *to, unsigned to_len,
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const uint8_t *from, unsigned from_len);
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int RSA_padding_check_PKCS1_type_1(uint8_t *to, unsigned to_len,
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const uint8_t *from, unsigned from_len);
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int RSA_padding_add_PKCS1_type_2(uint8_t *to, unsigned to_len,
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const uint8_t *from, unsigned from_len);
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int RSA_padding_check_PKCS1_type_2(uint8_t *to, unsigned to_len,
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const uint8_t *from, unsigned from_len);
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int RSA_padding_add_PKCS1_OAEP_mgf1(uint8_t *to, unsigned to_len,
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const uint8_t *from, unsigned from_len,
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const uint8_t *param, unsigned plen,
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const EVP_MD *md, const EVP_MD *mgf1md);
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int RSA_padding_check_PKCS1_OAEP_mgf1(uint8_t *to, unsigned to_len,
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const uint8_t *from, unsigned from_len,
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const uint8_t *param, unsigned plen,
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const EVP_MD *md, const EVP_MD *mgf1md);
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int RSA_padding_add_none(uint8_t *to, unsigned to_len, const uint8_t *from,
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unsigned from_len);
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/* RSA_private_transform calls either the method-specific |private_transform|
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* function (if given) or the generic one. See the comment for
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* |private_transform| in |rsa_meth_st|. */
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int RSA_private_transform(RSA *rsa, uint8_t *out, const uint8_t *in,
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size_t len);
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/* RSA_additional_prime contains information about the third, forth etc prime
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* in a multi-prime RSA key. */
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typedef struct RSA_additional_prime_st {
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BIGNUM *prime;
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/* exp is d^{prime-1} mod prime */
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BIGNUM *exp;
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/* coeff is such that r×coeff ≡ 1 mod prime. */
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BIGNUM *coeff;
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/* Values below here are not in the ASN.1 serialisation. */
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/* r is the product of all primes (including p and q) prior to this one. */
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BIGNUM *r;
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/* mont is a |BN_MONT_CTX| modulo |prime|. */
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BN_MONT_CTX *mont;
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} RSA_additional_prime;
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void RSA_additional_prime_free(RSA_additional_prime *ap);
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#if defined(__cplusplus)
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} /* extern C */
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#endif
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#endif /* OPENSSL_HEADER_RSA_INTERNAL_H */
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