md5 password check
be able to lookup if your password exists in a breach by entering an md5 of your password rather than the actual password.
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There’s no upside to MD5. SHA-1 is used not with the expectation of people having SHA-1 hashes in the first place, but rather having the plain text in the first place then using SHA-1 as part of the k-anonymity implementation: https://www.troyhunt.com/ive-just-launched-pwned-passwords-version-2/