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What is MD5?
MD5 (Message-Digest Algorithm 5) is a widely used cryptographic hash function that produces a 128-bit (16-byte) hash value. It is commonly used to verify data integrity.
- Output length: 128 bits (32 hexadecimal characters).
- No longer considered secure against collisions.
- Suitable for checksums and data verification, not for security.
What is SHA?
SHA (Secure Hash Algorithm) is a family of cryptographic hash functions. SHA-1, SHA-256, and SHA-512 are common variants, offering different levels of security and output lengths.
- SHA-1: 160-bit hash, now considered insecure for most purposes.
- SHA-256: 256-bit hash, widely used and considered secure.
- SHA-512: 512-bit hash, offering higher security but is slower.