Fixed #35428 -- Increased parallelism parameter for the ScryptPasswordHasher.

[saJaeHyukc]

Trac ticket number

ticket-35428

Branch description

I modified the parallelism value of the ScriptPasswordHasher to the value recommended by OAWSP. For other options, increasing N=2^x would exceed the specified limited memory, so I did not want to increase the parameters of maxmem, so I only increased the parallelism value.

I think the best value is this option.
N=2^14 (16 MiB), r=8 (1024 bytes), p=5

Checklist

• This PR targets the main branch.
• The commit message is written in past tense, mentions the ticket number, and ends with a period.
• I have checked the "Has patch" ticket flag in the Trac system.
• I have added or updated relevant tests.
• I have added or updated relevant docs, including release notes if applicable.
• I have attached screenshots in both light and dark modes for any UI changes.

[adamchainz]

The release note should be for 5.1, as this won't be backported, and should not be described as a bug fix, as this is a security hardening.

[saJaeHyukc]

The release note should be for 5.1, as this won't be backported, and should not be described as a bug fix, as this is a security hardening.

Thank you for letting me know :)

[sarahboyce]

Thank you @saJaeHyukc 👍