1 files changed, 16 insertions, 5 deletions
diff --git a/src/common/Cryptography/BigNumber.cpp b/src/common/Cryptography/BigNumber.cpp
index 3b85122ebab..0d5dafc336b 100644
--- a/src/common/Cryptography/BigNumber.cpp
+++ b/src/common/Cryptography/BigNumber.cpp
@@ -163,11 +163,16 @@ uint32 BigNumber::AsDword()
     return (uint32)BN_get_word(_bn);
 }
 
-bool BigNumber::isZero() const
+bool BigNumber::IsZero() const
 {
     return BN_is_zero(_bn);
 }
 
+bool BigNumber::IsNegative() const
+{
+    return BN_is_negative(_bn);
+}
+
 std::unique_ptr<uint8[]> BigNumber::AsByteArray(int32 minSize, bool littleEndian)
 {
     int numBytes = GetNumBytes();
@@ -189,13 +194,19 @@ std::unique_ptr<uint8[]> BigNumber::AsByteArray(int32 minSize, bool littleEndian
     return ret;
 }
 
-char * BigNumber::AsHexStr() const
+std::string BigNumber::AsHexStr() const
 {
-    return BN_bn2hex(_bn);
+    char* ch = BN_bn2hex(_bn);
+    std::string ret = ch;
+    OPENSSL_free(ch);
+    return ret;
 }
 
-char * BigNumber::AsDecStr() const
+std::string BigNumber::AsDecStr() const
 {
-    return BN_bn2dec(_bn);
+    char* ch = BN_bn2dec(_bn);
+    std::string ret = ch;
+    OPENSSL_free(ch);
+    return ret;
 }