| /* |
| Licensed to the Apache Software Foundation (ASF) under one |
| or more contributor license agreements. See the NOTICE file |
| distributed with this work for additional information |
| regarding copyright ownership. The ASF licenses this file |
| to you under the Apache License, Version 2.0 (the |
| "License"); you may not use this file except in compliance |
| with the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, |
| software distributed under the License is distributed on an |
| "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| KIND, either express or implied. See the License for the |
| specific language governing permissions and limitations |
| under the License. |
| */ |
| |
| /** |
| * @file rsa.h |
| * @author Mike Scott and Kealan McCusker |
| * @date 2nd June 2015 |
| * @brief RSA Header file for implementation of RSA protocol |
| * |
| * declares functions |
| * |
| */ |
| |
| #ifndef RSA_WWW_H |
| #define RSA_WWW_H |
| |
| #include "ff_WWW.h" |
| #include "rsa_support.h" |
| |
| using namespace amcl; |
| |
| /*** START OF USER CONFIGURABLE SECTION - ***/ |
| |
| #define HASH_TYPE_RSA_WWW SHA256 /**< Chosen Hash algorithm */ |
| |
| /*** END OF USER CONFIGURABLE SECTION ***/ |
| |
| #define RFS_WWW MODBYTES_XXX*FFLEN_WWW /**< RSA Public Key Size in bytes */ |
| |
| |
| namespace WWW { |
| |
| /** |
| @brief Integer Factorisation Public Key |
| */ |
| |
| typedef struct |
| { |
| sign32 e; /**< RSA exponent (typically 65537) */ |
| XXX::BIG n[FFLEN_WWW]; /**< An array of BIGs to store public key */ |
| } rsa_public_key; |
| |
| /** |
| @brief Integer Factorisation Private Key |
| */ |
| |
| typedef struct |
| { |
| XXX::BIG p[FFLEN_WWW/2]; /**< secret prime p */ |
| XXX::BIG q[FFLEN_WWW/2]; /**< secret prime q */ |
| XXX::BIG dp[FFLEN_WWW/2]; /**< decrypting exponent mod (p-1) */ |
| XXX::BIG dq[FFLEN_WWW/2]; /**< decrypting exponent mod (q-1) */ |
| XXX::BIG c[FFLEN_WWW/2]; /**< 1/p mod q */ |
| } rsa_private_key; |
| |
| /* RSA Auxiliary Functions */ |
| |
| extern void RSA_KEY_PAIR(csprng *R,sign32 e,rsa_private_key* PRIV,rsa_public_key* PUB,octet *P, octet* Q); |
| |
| /** @brief RSA encryption of suitably padded plaintext |
| * |
| @param PUB the input RSA public key |
| @param F is input padded message |
| @param G is the output ciphertext |
| */ |
| extern void RSA_ENCRYPT(rsa_public_key* PUB,octet *F,octet *G); |
| /** @brief RSA decryption of ciphertext |
| * |
| @param PRIV the input RSA private key |
| @param G is the input ciphertext |
| @param F is output plaintext (requires unpadding) |
| |
| */ |
| extern void RSA_DECRYPT(rsa_private_key* PRIV,octet *G,octet *F); |
| /** @brief Destroy an RSA private Key |
| * |
| @param PRIV the input RSA private key. Destroyed on output. |
| */ |
| extern void RSA_PRIVATE_KEY_KILL(rsa_private_key *PRIV); |
| /** @brief Populates an RSA public key from an octet string |
| * |
| Creates RSA public key from big-endian base 256 form. |
| @param x FF instance to be created from an octet string |
| @param S input octet string |
| */ |
| extern void RSA_fromOctet(XXX::BIG *x,octet *S); |
| } |
| |
| |
| #endif |