Password Generator & Checker

securepass/README.md

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+# Secure Password Manager
+
+A Python utility for generating secure passwords and checking the strength of existing passwords.
+
+## Features
+
+- **Password Generator**: Create secure passwords with multiple options
+  - Mix of numbers, letters, and symbols (Recommended)
+  - Numbers only
+  - Letters only
+  - Symbols only
+  - Customizable length (4-20 characters)
+
+- **Password Strength Checker**: Analyze password quality and get recommendations
+  - Check password length
+  - Analyze character composition (uppercase, lowercase, numbers, symbols)
+  - Receive suggestions for improvement
+  - Detailed password report
+
+## Installation
+
+No external dependencies are required. This script uses only Python standard library modules.
+
+```bash
+# Clone or download the repository
+# Navigate to the securepass directory
+cd securepass
+
+# Run the script
+python password.py
+```
+
+## Usage
+
+Run the script and follow the interactive prompts:
+
+```bash
+python password.py
+```
+
+### Main Menu
+
+You'll be presented with two options:
+1. **Generate a secure password** - Create a new password with custom specifications
+2. **Check strength of my password** - Analyze an existing password
+
+### Generate Password Workflow
+
+1. Select the password type (1-4)
+2. Enter desired length (4-20 characters)
+3. View your generated password
+4. Optionally get a detailed password report
+
+### Check Password Strength Workflow
+
+1. Enter the password you want to check
+2. Receive a detailed report with recommendations
+
+## Example Output
+
+```
+What would you like to do:
+1 Generate a secure password
+2 Check strength of my password
+> 1
+
+Choose password type:
+1 Mix of numbers, letters and symbols (Recommended)
+2 Numbers only password
+3 Letters only password
+4 Symbols only password
+> 1
+
+Enter your desired length (between 4 and 20): 12
+Here is your password: aB3!xK9$mQ2@
+
+Would you like a report for this password? (y/n): y
+The password has a length of 12 characters, which meets or exceeds the recommended 8. 
+It has 2 uppercase letter(s), 2 lowercase letter(s), 3 number(s), and 3 symbol(s). 
+This password has a good mix of character types.
+```
+
+## Password Strength Criteria
+
+The password strength checker evaluates:
+
+- **Length**: Recommends a minimum of 8 characters
+- **Character Diversity**: Checks for presence of:
+  - Uppercase letters
+  - Lowercase letters
+  - Numbers
+  - Symbols
+
+## Functions
+
+- `generate_number_only(length)` - Generates password with digits only
+- `generate_letters_only(length)` - Generates password with letters only
+- `generate_symbols_only(length)` - Generates password with symbols only
+- `mix_of_all(length)` - Generates password with mix of all character types
+- `password_report(password)` - Analyzes password strength and returns report
+
+## Requirements
+
+- Python 3.x
+- No external packages required
+
+## Best Practices
+
+- Use "Mix of numbers, letters and symbols" for the strongest passwords
+- Maintain a minimum length of 12 characters for sensitive accounts
+- Store generated passwords securely (consider using a password manager)
+- Regularly update passwords for important accounts
+- Never share passwords or store them in plain text
+
+## License
+
+This project is part of the Python-Projects repository by Grow-with-Open-Source.

securepass/password.py

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+import random
+import string
+
+
+def main():
+    while True:
+        option = input(
+            "What would you like to do:\n"
+            "1 Generate a secure password\n"
+            "2 Check strength of my password\n> "
+        )
+        if option not in ("1", "2"):
+            print("Please choose 1 or 2.")
+            continue
+        break
+
+    if option == "1":
+        while True:
+            try:
+                choice = int(
+                    input(
+                        "Choose password type:\n"
+                        "1 Mix of numbers, letters and symbols (Recommended)\n"
+                        "2 Numbers only password\n"
+                        "3 Letters only password\n"
+                        "4 Symbols only password\n> "
+                    )
+                )
+                length = int(input("Enter your desired length (between 4 and 20): "))
+            except ValueError:
+                print("Invalid input, enter numbers only.")
+                continue
+
+            if choice not in (1, 2, 3, 4) or length not in range(4, 21):
+                print("Invalid input, try again.")
+                continue
+            break
+
+        if choice == 1:
+            passwd = mix_of_all(length)
+        elif choice == 2:
+            passwd = generate_number_only(length)
+        elif choice == 3:
+            passwd = generate_letters_only(length)
+        else:
+            passwd = generate_symbols_only(length)
+
+        print("Here is your password:", passwd)
+
+        if input("Would you like a report for this password? (y/n): ").lower() == "y":
+            print(password_report(passwd))
+
+    else:  # option == "2"
+        existing = input("Enter the password you want to check: ")
+        print(password_report(existing))
+
+
+def generate_number_only(length):
+    digits = string.digits
+    return "".join(random.choice(digits) for _ in range(length))
+
+
+def generate_letters_only(length):
+    letters = string.ascii_letters
+    return "".join(random.choice(letters) for _ in range(length))
+
+
+def generate_symbols_only(length):
+    symbols = "!@#$%^&*()-_=+[]{};:,.<>?/\\|"
+    return "".join(random.choice(symbols) for _ in range(length))
+
+
+def mix_of_all(length):
+    pool = string.ascii_letters + string.digits + "!@#$%^&*()-_=+[]{};:,.<>?/\\|"
+    return "".join(random.choice(pool) for _ in range(length))
+
+
+def password_report(password: str) -> str:
+    recommended_length = 8
+
+    length = len(password)
+    upper = sum(1 for ch in password if ch.isupper())
+    lower = sum(1 for ch in password if ch.islower())
+    digits = sum(1 for ch in password if ch.isdigit())
+    symbols = sum(1 for ch in password if not ch.isalnum())
+
+    parts = []
+
+    # Length report
+    diff = recommended_length - length
+    if diff > 0:
+        parts.append(
+            f"The password has a length of {length} characters, {diff} less than the recommended {recommended_length}."
+        )
+    else:
+        parts.append(
+            f"The password has a length of {length} characters, which meets or exceeds the recommended {recommended_length}."
+        )
+
+    # Composition report
+    parts.append(
+        f"It has {upper} uppercase letter(s), {lower} lowercase letter(s), {digits} number(s), and {symbols} symbol(s)."
+    )
+
+    suggestions = []
+    if upper == 0:
+        suggestions.append("add at least one uppercase letter")
+    if lower == 0:
+        suggestions.append("add at least one lowercase letter")
+    if digits == 0:
+        suggestions.append("add at least one number")
+    if symbols == 0:
+        suggestions.append("add a symbol for extra strength")
+
+    if suggestions:
+        parts.append(
+            "To improve this password, you could " + ", ".join(suggestions) + "."
+        )
+    else:
+        parts.append("This password has a good mix of character types.")
+
+    return " ".join(parts)
+
+
+if __name__ == '__main__':
+    main()