Relax restrictions on scrypt log_n

[CyanChanges]

Version: Deno 2.1.6

// scrypt.js
import crypto from 'node:crypto'

crypto.scrypt('password', 'salt', 128, (err, hashed) => {
  if (err) throw err
  console.log('hashed = ', hashed.toString('hex'))
})

crypto.scrypt('password', 'salt', 128, (err, hashed) => {
  if (err) throw err
  console.log('hashed = ', hashed.toString('hex'))
})

$ deno ./scrypt.js

============================================================
Deno has panicked. This is a bug in Deno. Please report this
at https://github.com/denoland/deno/issues/new.
If you can reliably reproduce this panic, include the
reproduction steps and re-run with the RUST_BACKTRACE=1 env
var set and include the backtrace in your report.

Platform: linux x86_64
Version: 2.1.6
Args: ["/home/cyan/.asdf/installs/deno/2.1.4/bin/deno", "./scrypt.js"]

thread 'tokio-runtime-worker' panicked at ext/node/ops/crypto/mod.rs:585:4:
called `Result::unwrap()` on an `Err` value: InvalidParams
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

============================================================
Deno has panicked. This is a bug in Deno. Please report this
at https://github.com/denoland/deno/issues/new.
If you can reliably reproduce this panic, include the
reproduction steps and re-run with the RUST_BACKTRACE=1 env
var set and include the backtrace in your report.

Platform: linux x86_64
Version: 2.1.6
Args: ["/home/cyan/.asdf/installs/deno/2.1.4/bin/deno", "./scrypt.js"]

thread 'tokio-runtime-worker' panicked at ext/node/ops/crypto/mod.rs:585:4:
called `Result::unwrap()` on an `Err` value: InvalidParams

$ node ./scrypt.js
hashed =  745731af4484f323968969eda289aeee005b5903ac561e64a5aca121797bf7734ef9fd58422e2e22183bcacba9ec87ba0c83b7a2e788f03ce0da06463433cda64176095fbbad7dc98c33fd75955b4b29c94f6e97617bd68d8ff17cf1ed5ad12f3fc6c8eb5b844f2d003ebaf5eaed19e8f665928472a6941f7efc6ebcdd6fd13a
hashed =  745731af4484f323968969eda289aeee005b5903ac561e64a5aca121797bf7734ef9fd58422e2e22183bcacba9ec87ba0c83b7a2e788f03ce0da06463433cda64176095fbbad7dc98c33fd75955b4b29c94f6e97617bd68d8ff17cf1ed5ad12f3fc6c8eb5b844f2d003ebaf5eaed19e8f665928472a6941f7efc6ebcdd6fd13a

Here:

deno/ext/node/ops/crypto/mod.rs

Lines 579 to 585 in 57dd66e

	let params = scrypt::Params::new(
	cost as u8,
	block_size,
	parallelization,
	keylen as usize,
	)
	.unwrap();

The Result is unwrapped, and it will be an Err when len > 64
According to the Document here: https://docs.rs/scrypt/latest/scrypt/struct.Params.html#conditions

But the same thing works in Node.js, maybe deno need to consider some alternatives?

[littledivy]

It should error instead of panic. I updated the title as log_n > 64 support depends on RustCrypto/password-hashes#546