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@@ -100,5 +100,19 @@ DESCRIPTION Get encoding alphabet for the last algorithm in a chain. +NOTES + Using librecrypt_add_algorithm(3) to hash existing password + hashes should be used as a transitional mitigation strategy + when replaing an old password hash function. Once the password + is available in clear text, it should be hashed anew using + only the new password hash function: this will both increase + security and reducing login it, allowing for stronger hash + function configurations. This is especially important if the + password is actually a key and longer than the old hash. It + is also a good idea to force password reset, and lock any + account that hasn't reset its password, because it is + possibly that the old password hashes has been leaked and it + will force a fresh hashing even one counts that seldom log in. + SEE ALSO crypt(3), crypt(5) |