diff --git a/src/server/shared/Cryptography/SHA1.cpp b/src/server/shared/Cryptography/SHA1.cpp
index 87fdfd2718..5b454caea2 100644
--- a/src/server/shared/Cryptography/SHA1.cpp
+++ b/src/server/shared/Cryptography/SHA1.cpp
@@ -7,20 +7,19 @@
 #include "BigNumber.h"
 #include <stdarg.h>
 
-SHA1Hash::SHA1Hash()
+SHA1Hash::SHA1Hash() : m_ctx(EVP_MD_CTX_new())
 {
-    SHA1_Init(&mC);
-    memset(mDigest, 0, SHA_DIGEST_LENGTH * sizeof(uint8));
+    EVP_DigestInit_ex(m_ctx, EVP_sha1(), NULL);
 }
 
 SHA1Hash::~SHA1Hash()
 {
-    SHA1_Init(&mC);
+    EVP_MD_CTX_free(m_ctx);
 }
 
 void SHA1Hash::UpdateData(const uint8 *dta, int len)
 {
-    SHA1_Update(&mC, dta, len);
+    EVP_DigestUpdate(m_ctx, dta, len);
 }
 
 void SHA1Hash::UpdateData(const std::string &str)
@@ -45,11 +44,12 @@ void SHA1Hash::UpdateBigNumbers(BigNumber* bn0, ...)
 
 void SHA1Hash::Initialize()
 {
-    SHA1_Init(&mC);
+    EVP_DigestInit(m_ctx, EVP_sha1());
 }
 
 void SHA1Hash::Finalize(void)
 {
-    SHA1_Final(mDigest, &mC);
+    uint32 length = SHA_DIGEST_LENGTH;
+    EVP_DigestFinal_ex(m_ctx, m_digest, &length);
 }
 
diff --git a/src/server/shared/Cryptography/SHA1.h b/src/server/shared/Cryptography/SHA1.h
index 009cb29cd1..507e6c312b 100644
--- a/src/server/shared/Cryptography/SHA1.h
+++ b/src/server/shared/Cryptography/SHA1.h
@@ -9,6 +9,7 @@
 #include "Define.h"
 #include <string>
 #include <openssl/sha.h>
+#include <openssl/evp.h>
 
 class BigNumber;
 
@@ -26,12 +27,12 @@ class SHA1Hash
         void Initialize();
         void Finalize();
 
-        uint8 *GetDigest(void) { return mDigest; };
+        uint8 *GetDigest(void) { return m_digest; };
         int32 GetLength(void) const { return SHA_DIGEST_LENGTH; };
 
     private:
-        SHA_CTX mC;
-        uint8 mDigest[SHA_DIGEST_LENGTH];
+        EVP_MD_CTX* m_ctx;
+        uint8 m_digest[SHA_DIGEST_LENGTH];
 };
 #endif