Core/Crypto: Updated ARC4 code with openssl 3.0 support

1 files changed, 20 insertions, 1 deletions

diff --git a/src/common/Cryptography/ARC4.cpp b/src/common/Cryptography/ARC4.cpp
index 161303e2c15..faa2265ef71 100644
--- a/src/common/Cryptography/ARC4.cpp
+++ b/src/common/Cryptography/ARC4.cpp
@@ -18,16 +18,35 @@
 #include "ARC4.h"
 #include "Errors.h"
 
+#if OPENSSL_VERSION_NUMBER >= 0x30000000L
+#include <openssl/provider.h>
+#endif
+
 Trinity::Crypto::ARC4::ARC4() : _ctx(EVP_CIPHER_CTX_new())
 {
+    EVP_CIPHER const* cipher;
+#if OPENSSL_VERSION_NUMBER >= 0x30000000L
+    _libCtx = OSSL_LIB_CTX_new();
+    _legacyProvider = OSSL_PROVIDER_load(_libCtx, "legacy");
+
+    cipher = EVP_CIPHER_fetch(_libCtx, "RC4", "");
+#else
+    cipher = EVP_rc4();
+#endif
+
     EVP_CIPHER_CTX_init(_ctx);
-    int result = EVP_EncryptInit_ex(_ctx, EVP_rc4(), nullptr, nullptr, nullptr);
+    int result = EVP_EncryptInit_ex(_ctx, cipher, nullptr, nullptr, nullptr);
     ASSERT(result == 1);
 }
 
 Trinity::Crypto::ARC4::~ARC4()
 {
     EVP_CIPHER_CTX_free(_ctx);
+
+#if OPENSSL_VERSION_NUMBER >= 0x30000000L
+    OSSL_PROVIDER_unload(_legacyProvider);
+    OSSL_LIB_CTX_free(_libCtx);
+#endif
 }
 
 void Trinity::Crypto::ARC4::Init(uint8 const* seed, size_t len)