/* $OpenBSD: rsa_local.h,v 1.10 2025/01/05 15:39:12 tb Exp $ */ /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * "This product includes cryptographic software written by * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence * [including the GNU Public Licence.] */ __BEGIN_HIDDEN_DECLS #define RSA_MIN_MODULUS_BITS 512 struct rsa_meth_st { char *name; int (*rsa_pub_enc)(int flen, const unsigned char *from, unsigned char *to, RSA *rsa, int padding); int (*rsa_pub_dec)(int flen, const unsigned char *from, unsigned char *to, RSA *rsa, int padding); int (*rsa_priv_enc)(int flen, const unsigned char *from, unsigned char *to, RSA *rsa, int padding); int (*rsa_priv_dec)(int flen, const unsigned char *from, unsigned char *to, RSA *rsa, int padding); int (*rsa_mod_exp)(BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx); /* Can be null */ int (*bn_mod_exp)(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx); /* Can be null */ int (*init)(RSA *rsa); /* called at new */ int (*finish)(RSA *rsa); /* called at free */ int flags; /* RSA_METHOD_FLAG_* things */ char *app_data; /* may be needed! */ /* New sign and verify functions: some libraries don't allow arbitrary data * to be signed/verified: this allows them to be used. Note: for this to work * the RSA_public_decrypt() and RSA_private_encrypt() should *NOT* be used * RSA_sign(), RSA_verify() should be used instead. */ int (*rsa_sign)(int type, const unsigned char *m, unsigned int m_length, unsigned char *sigret, unsigned int *siglen, const RSA *rsa); int (*rsa_verify)(int dtype, const unsigned char *m, unsigned int m_length, const unsigned char *sigbuf, unsigned int siglen, const RSA *rsa); /* If this callback is NULL, the builtin software RSA key-gen will be used. This * is for behavioural compatibility whilst the code gets rewired, but one day * it would be nice to assume there are no such things as "builtin software" * implementations. */ int (*rsa_keygen)(RSA *rsa, int bits, BIGNUM *e, BN_GENCB *cb); }; struct rsa_st { long version; const RSA_METHOD *meth; BIGNUM *n; BIGNUM *e; BIGNUM *d; BIGNUM *p; BIGNUM *q; BIGNUM *dmp1; BIGNUM *dmq1; BIGNUM *iqmp; /* Parameter restrictions for PSS only keys. */ RSA_PSS_PARAMS *pss; /* be careful using this if the RSA structure is shared */ CRYPTO_EX_DATA ex_data; int references; int flags; /* Used to cache montgomery values */ BN_MONT_CTX *_method_mod_n; BN_MONT_CTX *_method_mod_p; BN_MONT_CTX *_method_mod_q; /* all BIGNUM values are actually in the following data, if it is not * NULL */ BN_BLINDING *blinding; BN_BLINDING *mt_blinding; }; RSA_PSS_PARAMS *rsa_pss_params_create(const EVP_MD *sigmd, const EVP_MD *mgf1md, int saltlen); int rsa_pss_get_param(const RSA_PSS_PARAMS *pss, const EVP_MD **pmd, const EVP_MD **pmgf1md, int *psaltlen); extern int int_rsa_verify(int dtype, const unsigned char *m, unsigned int m_len, unsigned char *rm, size_t *prm_len, const unsigned char *sigbuf, size_t siglen, RSA *rsa); int RSA_padding_add_X931(unsigned char *to, int tlen, const unsigned char *f, int fl); int RSA_padding_check_X931(unsigned char *to, int tlen, const unsigned char *f, int fl, int rsa_len); int RSA_X931_hash_id(int nid); BN_BLINDING *BN_BLINDING_new(const BIGNUM *e, const BIGNUM *mod, BN_CTX *ctx, int (*bn_mod_exp)(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx), BN_MONT_CTX *m_ctx); void BN_BLINDING_free(BN_BLINDING *b); int BN_BLINDING_convert(BIGNUM *n, BIGNUM *r, BN_BLINDING *b, BN_CTX *); int BN_BLINDING_invert(BIGNUM *n, const BIGNUM *r, BN_BLINDING *b, BN_CTX *); int BN_BLINDING_is_local(BN_BLINDING *b); BN_BLINDING *RSA_setup_blinding(RSA *rsa, BN_CTX *ctx); __END_HIDDEN_DECLS