1 files changed, 257 insertions, 0 deletions

diff --git a/src/lib/libcrypto/rsa/rsa_crpt.c b/src/lib/libcrypto/rsa/rsa_crpt.c
new file mode 100644
index 0000000000..d3e44785dc
--- /dev/null
+++ b/src/lib/libcrypto/rsa/rsa_crpt.c
@@ -0,0 +1,257 @@
+/* crypto/rsa/rsa_lib.c */
+/* 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.]
+ */
+
+#include <stdio.h>
+#include <openssl/crypto.h>
+#include "cryptlib.h"
+#include <openssl/lhash.h>
+#include <openssl/bn.h>
+#include <openssl/rsa.h>
+#include <openssl/rand.h>
+#ifndef OPENSSL_NO_ENGINE
+#include <openssl/engine.h>
+#endif
+
+int RSA_size(const RSA *r)
+        {
+        return(BN_num_bytes(r->n));
+        }
+
+int RSA_public_encrypt(int flen, const unsigned char *from, unsigned char *to,
+             RSA *rsa, int padding)
+        {
+#ifdef OPENSSL_FIPS
+        if (FIPS_mode() && !(rsa->meth->flags & RSA_FLAG_FIPS_METHOD)
+                        && !(rsa->flags & RSA_FLAG_NON_FIPS_ALLOW))
+                {
+                RSAerr(RSA_F_RSA_PUBLIC_ENCRYPT, RSA_R_NON_FIPS_RSA_METHOD);
+                return -1;
+                }
+#endif
+        return(rsa->meth->rsa_pub_enc(flen, from, to, rsa, padding));
+        }
+
+int RSA_private_encrypt(int flen, const unsigned char *from, unsigned char *to,
+             RSA *rsa, int padding)
+        {
+#ifdef OPENSSL_FIPS
+        if (FIPS_mode() && !(rsa->meth->flags & RSA_FLAG_FIPS_METHOD)
+                        && !(rsa->flags & RSA_FLAG_NON_FIPS_ALLOW))
+                {
+                RSAerr(RSA_F_RSA_PRIVATE_ENCRYPT, RSA_R_NON_FIPS_RSA_METHOD);
+                return -1;
+                }
+#endif
+        return(rsa->meth->rsa_priv_enc(flen, from, to, rsa, padding));
+        }
+
+int RSA_private_decrypt(int flen, const unsigned char *from, unsigned char *to,
+             RSA *rsa, int padding)
+        {
+#ifdef OPENSSL_FIPS
+        if (FIPS_mode() && !(rsa->meth->flags & RSA_FLAG_FIPS_METHOD)
+                        && !(rsa->flags & RSA_FLAG_NON_FIPS_ALLOW))
+                {
+                RSAerr(RSA_F_RSA_PRIVATE_DECRYPT, RSA_R_NON_FIPS_RSA_METHOD);
+                return -1;
+                }
+#endif
+        return(rsa->meth->rsa_priv_dec(flen, from, to, rsa, padding));
+        }
+
+int RSA_public_decrypt(int flen, const unsigned char *from, unsigned char *to,
+             RSA *rsa, int padding)
+        {
+#ifdef OPENSSL_FIPS
+        if (FIPS_mode() && !(rsa->meth->flags & RSA_FLAG_FIPS_METHOD)
+                        && !(rsa->flags & RSA_FLAG_NON_FIPS_ALLOW))
+                {
+                RSAerr(RSA_F_RSA_PUBLIC_DECRYPT, RSA_R_NON_FIPS_RSA_METHOD);
+                return -1;
+                }
+#endif
+        return(rsa->meth->rsa_pub_dec(flen, from, to, rsa, padding));
+        }
+
+int RSA_flags(const RSA *r)
+        {
+        return((r == NULL)?0:r->meth->flags);
+        }
+
+void RSA_blinding_off(RSA *rsa)
+        {
+        if (rsa->blinding != NULL)
+                {
+                BN_BLINDING_free(rsa->blinding);
+                rsa->blinding=NULL;
+                }
+        rsa->flags &= ~RSA_FLAG_BLINDING;
+        rsa->flags |= RSA_FLAG_NO_BLINDING;
+        }
+
+int RSA_blinding_on(RSA *rsa, BN_CTX *ctx)
+        {
+        int ret=0;
+
+        if (rsa->blinding != NULL)
+                RSA_blinding_off(rsa);
+
+        rsa->blinding = RSA_setup_blinding(rsa, ctx);
+        if (rsa->blinding == NULL)
+                goto err;
+
+        rsa->flags |= RSA_FLAG_BLINDING;
+        rsa->flags &= ~RSA_FLAG_NO_BLINDING;
+        ret=1;
+err:
+        return(ret);
+        }
+
+static BIGNUM *rsa_get_public_exp(const BIGNUM *d, const BIGNUM *p,
+        const BIGNUM *q, BN_CTX *ctx)
+{
+        BIGNUM *ret = NULL, *r0, *r1, *r2;
+
+        if (d == NULL || p == NULL || q == NULL)
+                return NULL;
+
+        BN_CTX_start(ctx);
+        r0 = BN_CTX_get(ctx);
+        r1 = BN_CTX_get(ctx);
+        r2 = BN_CTX_get(ctx);
+        if (r2 == NULL)
+                goto err;
+
+        if (!BN_sub(r1, p, BN_value_one())) goto err;
+        if (!BN_sub(r2, q, BN_value_one())) goto err;
+        if (!BN_mul(r0, r1, r2, ctx)) goto err;
+
+        ret = BN_mod_inverse(NULL, d, r0, ctx);
+err:
+        BN_CTX_end(ctx);
+        return ret;
+}
+
+BN_BLINDING *RSA_setup_blinding(RSA *rsa, BN_CTX *in_ctx)
+{
+        BIGNUM local_n;
+        BIGNUM *e,*n;
+        BN_CTX *ctx;
+        BN_BLINDING *ret = NULL;
+
+        if (in_ctx == NULL)
+                {
+                if ((ctx = BN_CTX_new()) == NULL) return 0;
+                }
+        else
+                ctx = in_ctx;
+
+        BN_CTX_start(ctx);
+        e  = BN_CTX_get(ctx);
+        if (e == NULL)
+                {
+                RSAerr(RSA_F_RSA_SETUP_BLINDING, ERR_R_MALLOC_FAILURE);
+                goto err;
+                }
+
+        if (rsa->e == NULL)
+                {
+                e = rsa_get_public_exp(rsa->d, rsa->p, rsa->q, ctx);
+                if (e == NULL)
+                        {
+                        RSAerr(RSA_F_RSA_SETUP_BLINDING, RSA_R_NO_PUBLIC_EXPONENT);
+                        goto err;
+                        }
+                }
+        else
+                e = rsa->e;
+
+        
+        if ((RAND_status() == 0) && rsa->d != NULL && rsa->d->d != NULL)
+                {
+                /* if PRNG is not properly seeded, resort to secret
+                 * exponent as unpredictable seed */
+                RAND_add(rsa->d->d, rsa->d->dmax * sizeof rsa->d->d[0], 0.0);
+                }
+
+        if (!(rsa->flags & RSA_FLAG_NO_CONSTTIME))
+                {
+                /* Set BN_FLG_CONSTTIME flag */
+                n = &local_n;
+                BN_with_flags(n, rsa->n, BN_FLG_CONSTTIME);
+                }
+        else
+                n = rsa->n;
+
+        ret = BN_BLINDING_create_param(NULL, e, n, ctx,
+                        rsa->meth->bn_mod_exp, rsa->_method_mod_n);
+        if (ret == NULL)
+                {
+                RSAerr(RSA_F_RSA_SETUP_BLINDING, ERR_R_BN_LIB);
+                goto err;
+                }
+        CRYPTO_THREADID_current(BN_BLINDING_thread_id(ret));
+err:
+        BN_CTX_end(ctx);
+        if (in_ctx == NULL)
+                BN_CTX_free(ctx);
+        if(rsa->e == NULL)
+                BN_free(e);
+
+        return ret;
+}