2022-02-02 19:45:01 +00:00
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= unix password scheme =
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== logging in ==
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* Take password and salt into hash function
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* store it into a local file including
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* user id
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* salt
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* hash
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== logging out ==
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* User id is fetched as well as salt
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* given password is hashed with salt
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* compare stored hash against outputted hash
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== Improvements ==
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* Use MD5 hash
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2022-02-02 20:00:01 +00:00
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* 48 bit salt
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* password length is unlimited
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* 128bit hash
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* Uses inner loop with 1000 iterations
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* OpenBSD uses Blowfish based hash called Bcrypt
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* Most secure unix hash/salt scheme
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* uses 128bit salt to make 192bit hash value
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* Use a shadow password file
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* separate file with hash; different file with ID
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