SHA Password Encryptor

SHA Password Encryptor

Encrypt and Decrypt Passwords Securely Using SHA Algorithm

Password Hash Converter


What is this tool

The SHA Password Encryptor tool is a client‑side web application that demonstrates how cryptographic hash functions work. When you enter a password (or any text) and select one of the SHA algorithms (SHA‑1, SHA‑256, SHA‑384, or SHA‑512), the tool computes a one‑way hash of the text. Because these hash functions are designed to be irreversible, you cannot retrieve the original text from the hash.

However, the tool also offers a verification (labeled as “Decrypt” in the interface) functionality. In this mode, you enter a plain text password along with an expected hash value. The tool then computes the hash of your plain text and compares it with the expected hash. If they match, it confirms that the password is correct; if not, it indicates a mismatch. This verification process is analogous to how systems check passwords against stored hash values during authentication.

Key Points & Best Practices:

  • One‑Way Hashing:
    Cryptographic hash functions (like SHA‑256 and its variants) produce a fixed‑length output that uniquely represents your input. They are designed to be irreversible, meaning you cannot “decrypt” a hash to obtain the original text.
  • Verification Instead of Decryption:
    The tool’s “decrypt” functionality is actually a verification process. It allows you to compare a computed hash with a known hash, which is the standard method for authenticating passwords.
  • Algorithm Choice:
    Although SHA‑1 is available, modern security standards favor SHA‑256, SHA‑384, or SHA‑512 because they are more resistant to collision and brute‑force attacks.
  • Security Practices:
    In real‑world applications, password hashing should be combined with additional measures such as salting and key stretching (e.g., using PBKDF2, bcrypt, or scrypt) to further enhance security.

This tool is intended for educational purposes and for testing or verifying password hashes in a secure, client‑side environment.

How to use this tool
  1. Select the Operation Mode:
    Use the dropdown menu at the top of the tool to choose between:
    • Encrypt: To compute the hash of the entered text.
    • Decrypt (Verify): To compare a computed hash against an expected hash value.
  2. Choose a SHA Algorithm:
    Select one of the available SHA options (SHA‑1, SHA‑256, SHA‑384, or SHA‑512) from the second dropdown.
    • Tip: For better security, it is recommended to use SHA‑256 or a stronger variant.
  3. Enter the Required Text:
    • For Encrypt Mode:
      Enter the text (or password) you wish to hash in the input field labeled “Enter text to encrypt.”
    • For Decrypt (Verify) Mode:
      The input field’s placeholder changes to “Enter plain text.” In addition, a second field labeled “Enter hash to verify” will appear. Enter the plain text and the known (expected) hash that you want to verify.
  4. Click “Convert”:
    When you click the Convert button, the tool processes your input:
    • In Encrypt Mode, it computes and displays the hash of the entered text.
    • In Decrypt (Verify) Mode, it computes the hash of the plain text and then compares it with the expected hash.
      • If the hashes match, you’ll see a message like “Match: [computed hash].”
      • If they do not match, the tool will display “No match. Computed hash: [computed hash].”
  5. Copy the Result (Optional):
    Once the operation is complete, a “Copy Result” button appears. Click it to copy the displayed hash (or verification message) to your clipboard for further use.

By following these steps, you can use the tool to either generate a cryptographic hash of a password or verify that a given password corresponds to a specific hash value. This provides a practical demonstration of one‑way hashing and the standard process of password verification used in secure systems.

Password Tool
Password Encryptor