From b49fa9658a436c31ffc40100d5a55bee5a3f861e Mon Sep 17 00:00:00 2001
From: Shauren <shauren.trinity@gmail.com>
Date: Fri, 29 Dec 2017 12:50:12 +0100
Subject: Tools/Patcher: Properly sign certificate bundle

---
 src/common/Cryptography/RSA.cpp | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'src/common/Cryptography/RSA.cpp')

diff --git a/src/common/Cryptography/RSA.cpp b/src/common/Cryptography/RSA.cpp
index 11bbbe1dac5..96199d34bb0 100644
--- a/src/common/Cryptography/RSA.cpp
+++ b/src/common/Cryptography/RSA.cpp
@@ -16,6 +16,8 @@
  */
 
 #include "RSA.h"
+#include "BigNumber.h"
+#include <openssl/bn.h>
 #include <openssl/pem.h>
 #include <algorithm>
 #include <iterator>
@@ -88,6 +90,13 @@ bool Trinity::Crypto::RSA::LoadFromString(std::string const& keyPem, KeyTag)
     return true;
 }
 
+BigNumber Trinity::Crypto::RSA::GetModulus() const
+{
+    BigNumber bn;
+    BN_copy(bn.BN(), _rsa->n);
+    return bn;
+}
+
 template <typename KeyTag>
 bool Trinity::Crypto::RSA::Encrypt(uint8 const* data, std::size_t dataLength, uint8* output, int32 paddingType)
 {
@@ -97,6 +106,14 @@ bool Trinity::Crypto::RSA::Encrypt(uint8 const* data, std::size_t dataLength, ui
     return result != -1;
 }
 
+bool Trinity::Crypto::RSA::Sign(int32 hashType, uint8 const* dataHash, std::size_t dataHashLength, uint8* output)
+{
+    uint32 signatureLength = 0;
+    int result = RSA_sign(hashType, dataHash, dataHashLength, output, &signatureLength, _rsa);
+    std::reverse(output, output + GetOutputSize());
+    return result != -1;
+}
+
 namespace Trinity
 {
 namespace Crypto
-- 
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