Initial Commit

openssl-1.0.2f/crypto/rsa/rsa_null.c

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+/* rsa_null.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * 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 above 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 acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED 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 OpenSSL PROJECT OR
+ * ITS 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.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <stdio.h>
+#include "cryptlib.h"
+#include <openssl/bn.h>
+#include <openssl/rsa.h>
+#include <openssl/rand.h>
+
+/*
+ * This is a dummy RSA implementation that just returns errors when called.
+ * It is designed to allow some RSA functions to work while stopping those
+ * covered by the RSA patent. That is RSA, encryption, decryption, signing
+ * and verify is not allowed but RSA key generation, key checking and other
+ * operations (like storing RSA keys) are permitted.
+ */
+
+static int RSA_null_public_encrypt(int flen, const unsigned char *from,
+                                   unsigned char *to, RSA *rsa, int padding);
+static int RSA_null_private_encrypt(int flen, const unsigned char *from,
+                                    unsigned char *to, RSA *rsa, int padding);
+static int RSA_null_public_decrypt(int flen, const unsigned char *from,
+                                   unsigned char *to, RSA *rsa, int padding);
+static int RSA_null_private_decrypt(int flen, const unsigned char *from,
+                                    unsigned char *to, RSA *rsa, int padding);
+#if 0                           /* not currently used */
+static int RSA_null_mod_exp(const BIGNUM *r0, const BIGNUM *i, RSA *rsa);
+#endif
+static int RSA_null_init(RSA *rsa);
+static int RSA_null_finish(RSA *rsa);
+static RSA_METHOD rsa_null_meth = {
+    "Null RSA",
+    RSA_null_public_encrypt,
+    RSA_null_public_decrypt,
+    RSA_null_private_encrypt,
+    RSA_null_private_decrypt,
+    NULL,
+    NULL,
+    RSA_null_init,
+    RSA_null_finish,
+    0,
+    NULL,
+    NULL,
+    NULL,
+    NULL
+};
+
+const RSA_METHOD *RSA_null_method(void)
+{
+    return (&rsa_null_meth);
+}
+
+static int RSA_null_public_encrypt(int flen, const unsigned char *from,
+                                   unsigned char *to, RSA *rsa, int padding)
+{
+    RSAerr(RSA_F_RSA_NULL_PUBLIC_ENCRYPT, RSA_R_RSA_OPERATIONS_NOT_SUPPORTED);
+    return -1;
+}
+
+static int RSA_null_private_encrypt(int flen, const unsigned char *from,
+                                    unsigned char *to, RSA *rsa, int padding)
+{
+    RSAerr(RSA_F_RSA_NULL_PRIVATE_ENCRYPT,
+           RSA_R_RSA_OPERATIONS_NOT_SUPPORTED);
+    return -1;
+}
+
+static int RSA_null_private_decrypt(int flen, const unsigned char *from,
+                                    unsigned char *to, RSA *rsa, int padding)
+{
+    RSAerr(RSA_F_RSA_NULL_PRIVATE_DECRYPT,
+           RSA_R_RSA_OPERATIONS_NOT_SUPPORTED);
+    return -1;
+}
+
+static int RSA_null_public_decrypt(int flen, const unsigned char *from,
+                                   unsigned char *to, RSA *rsa, int padding)
+{
+    RSAerr(RSA_F_RSA_NULL_PUBLIC_DECRYPT, RSA_R_RSA_OPERATIONS_NOT_SUPPORTED);
+    return -1;
+}
+
+#if 0                           /* not currently used */
+static int RSA_null_mod_exp(BIGNUM *r0, BIGNUM *I, RSA *rsa)
+{
+    ... err(RSA_F_RSA_NULL_MOD_EXP, RSA_R_RSA_OPERATIONS_NOT_SUPPORTED);
+    return -1;
+}
+#endif
+
+static int RSA_null_init(RSA *rsa)
+{
+    return (1);
+}
+
+static int RSA_null_finish(RSA *rsa)
+{
+    return (1);
+}