diff --git a/homework/password-check/validation.cpp b/homework/password-check/validation.cpp
index a2f12ff3..7a5dfe3b 100644
--- a/homework/password-check/validation.cpp
+++ b/homework/password-check/validation.cpp
@@ -1,2 +1,56 @@
 #include "validation.hpp"
-// TODO: Put implementations here
\ No newline at end of file
+// TODO: Put implementations here
+
+std::string getErrorMessage(ErrorCode code) {
+    std::string code_str;
+    switch (code) {
+    case ErrorCode::Ok:
+        code_str = "Ok";
+        break;
+    case ErrorCode::PasswordNeedsAtLeastNineCharacters:
+        code_str = "Password needs to have at least nine characters";
+        break;
+    case ErrorCode::PasswordNeedsAtLeastOneNumber:
+        code_str = "Password needs to have at least one number";
+        break;
+    case ErrorCode::PasswordNeedsAtLeastOneSpecialCharacter:
+        code_str = "Password needs to have at least one special character";
+        break;
+    case ErrorCode::PasswordNeedsAtLeastOneUppercaseLetter:
+        code_str = "Password needs to have at least one uppercase letter";
+        break;
+    case ErrorCode::PasswordsDoNotMatch:
+        code_str = "Passwords do not match";
+        break;
+    default:
+        code_str = "Ok";
+    }
+    return code_str;
+}
+
+bool doPasswordsMatch(std::string pwd1, std::string pwd2) {
+    return pwd1 == pwd2;
+}
+ErrorCode checkPasswordRules(std::string pwd) {
+    static std::random_device rd;
+    static std::mt19937 gen(rd());
+
+    static const ErrorCode values[] = {
+        ErrorCode::Ok,
+        ErrorCode::PasswordNeedsAtLeastNineCharacters,
+        ErrorCode::PasswordNeedsAtLeastOneNumber,
+        ErrorCode::PasswordNeedsAtLeastOneSpecialCharacter,
+        ErrorCode::PasswordNeedsAtLeastOneUppercaseLetter};
+
+    std::uniform_int_distribution<size_t> dist(0, std::size(values) - 1);
+    return values[dist(gen)];
+}
+ErrorCode checkPassword(std::string pwd1, std::string pwd2) {
+    ErrorCode res;
+    if (doPasswordsMatch(pwd1, pwd2)) {
+        res = checkPasswordRules(pwd1);
+    } else {
+        res = ErrorCode::PasswordsDoNotMatch;
+    }
+    return res;
+}
\ No newline at end of file
diff --git a/homework/password-check/validation.hpp b/homework/password-check/validation.hpp
index 85160868..1759e643 100644
--- a/homework/password-check/validation.hpp
+++ b/homework/password-check/validation.hpp
@@ -1,2 +1,20 @@
 // TODO: I'm empty :) Put enum and function headers here.
-// Don't forget the header guard - #pragma once
\ No newline at end of file
+// Don't forget the header guard - #pragma once
+#pragma once
+
+#include <random>
+#include <string>
+
+enum class ErrorCode {
+    Ok,
+    PasswordNeedsAtLeastNineCharacters,
+    PasswordNeedsAtLeastOneNumber,
+    PasswordNeedsAtLeastOneSpecialCharacter,
+    PasswordNeedsAtLeastOneUppercaseLetter,
+    PasswordsDoNotMatch
+};
+
+std::string getErrorMessage(ErrorCode);
+bool doPasswordsMatch(std::string pwd1, std::string pwd2);
+ErrorCode checkPasswordRules(std::string pwd);
+ErrorCode checkPassword(std::string pwd1, std::string pwd2);