Core/Crypto: switched away from deprecated openSSL functions in HmacHash

src/common/Cryptography/HmacHash.cpp

@@ -20,58 +20,46 @@
 #include "Errors.h"
 #include <cstring>
 
-#if defined(OPENSSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER < 0x10100000L
-HMAC_CTX* HMAC_CTX_new()
-{
-    HMAC_CTX *ctx = new HMAC_CTX();
-    HMAC_CTX_init(ctx);
-    return ctx;
-}
-
-void HMAC_CTX_free(HMAC_CTX* ctx)
-{
-    HMAC_CTX_cleanup(ctx);
-    delete ctx;
-}
-#endif
-
 template<HashCreateFn HashCreator, uint32 DigestLength>
-HmacHash<HashCreator, DigestLength>::HmacHash(uint32 len, uint8 const* seed) : _ctx(HMAC_CTX_new())
+HmacHash<HashCreator, DigestLength>::HmacHash(uint32 len, uint8 const* seed) : _ctx(EVP_MD_CTX_create()), _key(EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, nullptr, seed, len))
 {
-    HMAC_Init_ex(_ctx, seed, len, HashCreator(), nullptr);
+    EVP_DigestSignInit(_ctx, nullptr, HashCreator(), nullptr, _key);
     memset(_digest, 0, DigestLength);
 }
 
 template<HashCreateFn HashCreator, uint32 DigestLength>
 HmacHash<HashCreator, DigestLength>::~HmacHash()
 {
-    HMAC_CTX_free(_ctx);
+    EVP_MD_CTX_destroy(_ctx);
+    _ctx = nullptr;
+    EVP_PKEY_free(_key);
+    _key = nullptr;
 }
 
 template<HashCreateFn HashCreator, uint32 DigestLength>
 void HmacHash<HashCreator, DigestLength>::UpdateData(std::string const& str)
 {
-    HMAC_Update(_ctx, reinterpret_cast<uint8 const*>(str.c_str()), str.length());
+    EVP_DigestSignUpdate(_ctx, reinterpret_cast<uint8 const*>(str.c_str()), str.length());
 }
 
 template<HashCreateFn HashCreator, uint32 DigestLength>
 void HmacHash<HashCreator, DigestLength>::UpdateData(uint8 const* data, size_t len)
 {
-    HMAC_Update(_ctx, data, len);
+    EVP_DigestSignUpdate(_ctx, data, len);
 }
 
 template<HashCreateFn HashCreator, uint32 DigestLength>
 void HmacHash<HashCreator, DigestLength>::Finalize()
 {
-    uint32 length = 0;
-    HMAC_Final(_ctx, _digest, &length);
+    size_t length = DigestLength;
+    EVP_DigestSignFinal(_ctx, _digest, &length);
     ASSERT(length == DigestLength);
 }
 
 template<HashCreateFn HashCreator, uint32 DigestLength>
 uint8* HmacHash<HashCreator, DigestLength>::ComputeHash(BigNumber* bn)
 {
-    HMAC_Update(_ctx, bn->AsByteArray().get(), bn->GetNumBytes());
+    EVP_DigestSignUpdate(_ctx, bn->AsByteArray().get(), bn->GetNumBytes());
     Finalize();
     return _digest;
 }

src/common/Cryptography/HmacHash.h

@@ -42,7 +42,8 @@ class TC_COMMON_API HmacHash
         uint8* GetDigest() { return _digest; }
         uint32 GetLength() const { return DigestLength; }
     private:
-        HMAC_CTX* _ctx;
+        EVP_MD_CTX* _ctx;
+        EVP_PKEY* _key;
         uint8 _digest[DigestLength];
 };