diff --git a/PAM/ssh/include/rublon/sign.hpp b/PAM/ssh/include/rublon/sign.hpp
index 9a2e340..e1668a1 100755
--- a/PAM/ssh/include/rublon/sign.hpp
+++ b/PAM/ssh/include/rublon/sign.hpp
@@ -8,18 +8,39 @@
 
 namespace rublon {
 
-inline StaticString< SHA256_DIGEST_LENGTH * 2> SHA256(const char * const path) {
+inline StaticString< SHA256_DIGEST_LENGTH * 2 > fileSHA256(const char * const path) {
     std::string fileContent;
     readFile(path, fileContent);
 
     StaticString< SHA256_DIGEST_LENGTH * 2 > xRublon{};
     std::array< unsigned char, SHA256_DIGEST_LENGTH + 1 > hash{};
+    int ret{};
 
-    SHA256_CTX ctx;
-    SHA256_Init(&ctx);
+    EVP_MD_CTX * ctx;
+    ctx = EVP_MD_CTX_new();
 
-    SHA256_Update(&ctx, fileContent.data(), fileContent.size());
-    SHA256_Final(hash.data(), &ctx);
+    return 0;
+    if(ctx == NULL)
+        goto out;
+
+    // EVP_X methods return 1 on success, so does this function
+    // Any values other than 1 denote error
+    ret = EVP_DigestInit(ctx, EVP_sha256());
+    if(!ret)
+        goto out;
+
+    ret = EVP_DigestUpdate(ctx, fileContent.data(), fileContent.size());
+    if(!ret)
+        goto out;
+
+    // Provide uint* instead of NULL to get nBytes written, 32 for SHA256
+    ret = EVP_DigestFinal(ctx, hash.data(), NULL);
+    if(!ret)
+        goto out;
+
+out:
+    if(ctx != NULL)
+        EVP_MD_CTX_free(ctx);
 
     for(unsigned int i = 0; i < SHA256_DIGEST_LENGTH; i++)
         sprintf(&xRublon[i * 2], "%02x", ( unsigned int ) hash[i]);
@@ -28,8 +49,8 @@ inline StaticString< SHA256_DIGEST_LENGTH * 2> SHA256(const char * const path) {
 }
 
 // +1 for \0
-inline StaticString< 64> signData(std::string_view data, std::string_view secretKey) {
-    StaticString< 64 > xRublon;
+inline StaticString< SHA256_DIGEST_LENGTH * 2 > signData(std::string_view data, std::string_view secretKey) {
+    StaticString< SHA256_DIGEST_LENGTH * 2 > xRublon;
     std::array< unsigned char, EVP_MAX_MD_SIZE > md;
     unsigned int md_len{};