Algorithms

The Crypto module supports various cryptographic algorithms for hashing and encryption.

Hash Algorithms

Algorithm	Notes
md5	Fast but insecure for password hashing.
sha1	Legacy, widely used but considered weak.
sha256	Recommended for most use cases.
sha512	High security 512-bit hash

Password Hash Algorithms

Algorithm	Notes
argon2id	Modern, resistant to GPU cracking. Recommended.
bcrypt	Industry standard, robust and slow.
scrypt	Memory-hard algorithm.

Authenticated Encryption (Secretbox)

Algorithm	Mode	Notes
xsalsa20-poly1305	Authenticated	High-speed, high-security standard.

Cipher Algorithms

Algorithm	Mode	Notes
aes-256-cbc	CBC	Standard block cipher mode.
aes-256-gcm	GCM	Authenticated encryption, recommended.
aes-256-ctr	CTR	Stream cipher mode.

Use cases

• sha256 – Standard hashing for checksums and signatures.
• aes-256-gcm – Secure encryption with built-in integrity checking.