crypto.randomBytes:- Takes a single argument specifying the number of bytes.
- Always requires a size input; no default value is provided.
ethers.randomBytes:- Optionally takes the number of bytes to generate.
- If no argument is provided, it defaults to generating 32 bytes.
Both crypto.randomBytes and ethers.randomBytes generate cryptographically secure random bytes, meaning the bytes are suitable for use in cryptographic applications such as key generation, encryption, and other security-sensitive operations.