Encryption

Hashing, encoding and password-hashing utilities. Hashes and Base64 are computed in your browser.

Encryption & Hashing Tools

Comprehensive suite of cryptographic tools for encoding, hashing, and secure password management.

Security Notice

Always use the most secure option for your use case. Avoid deprecated algorithms like MD5 and SHA-1 for security-critical applications. For password storage, always use Argon2.

Encoding

Base64 Encoder / Decoder

Encode and decode data using Base64 encoding scheme

Key Features

  • Text encoding/decoding
  • Binary data representation
  • URL-safe encoding
  • Reversible transformation

Use Cases

  • Email attachments (MIME)
  • Web data transmission
  • Configuration files
  • API token encoding
Security: Base64 is encoding, not encryption. Data is easily reversible.
Use Base64
Deprecated

MD5 Hash Generator

Generate MD5 cryptographic hash values from input data

Key Features

  • 128-bit hash output
  • Fast computation
  • Fixed-length output
  • One-way function

Use Cases

  • File integrity checks
  • Data deduplication
  • Legacy system support
  • Non-security checksums
Security: MD5 is cryptographically broken. Use only for non-security purposes.
Use MD5
Weak

SHA-1 Hash Generator

Generate SHA-1 cryptographic hash values

Key Features

  • 160-bit hash output
  • Better than MD5
  • Wide compatibility
  • Collision resistance

Use Cases

  • Git version control
  • Legacy applications
  • Digital signatures (deprecated)
  • Certificate fingerprints
Security: SHA-1 is deprecated for security. Vulnerable to collision attacks.
Use SHA-1
Secure

SHA-256 Hash Generator

Generate secure SHA-256 cryptographic hashes

Key Features

  • 256-bit hash output
  • Cryptographically secure
  • Collision resistant
  • Industry standard

Use Cases

  • Password verification
  • Digital signatures
  • Blockchain technology
  • Certificate validation
Security: SHA-256 is currently secure and recommended for most use cases.
Use SHA-256
Very Secure

SHA-512 Hash Generator

Generate SHA-512 hashes with enhanced security

Key Features

  • 512-bit hash output
  • Maximum security
  • Future-proof design
  • High performance

Use Cases

  • High-security applications
  • Long-term data integrity
  • Government systems
  • Financial services
Security: SHA-512 provides the highest security level for hash functions.
Use SHA-512
Maximum

Argon2 Password Hasher

State-of-the-art password hashing with Argon2id

Key Features

  • Memory-hard function
  • Configurable parameters
  • Salt generation
  • Side-channel resistance

Use Cases

  • User password storage
  • Authentication systems
  • Key derivation
  • Secure applications
Security: Argon2 is the winner of the Password Hashing Competition.
Use Argon2

Understanding Cryptographic Tools

Hash Functions vs Encryption

Hash Functions: One-way functions that produce fixed-size output. Cannot be reversed.

Encoding (Base64): Reversible data transformation for representation, not security.

Password Hashing: Specialized functions designed to be slow and memory-intensive.

Choosing the Right Tool

For Passwords: Always use Argon2 with proper parameters.

For Data Integrity: Use SHA-256 or SHA-512 for modern applications.

For Encoding: Base64 for data representation and transmission.

Legacy Support: MD5/SHA-1 only when required by older systems.