Password protection method and apparatus, and medium

One or more non-transitory computer-readable storage mediums storing a computer-readable instruction, wherein when the computer-readable instruction is executed by one or more processors, making the one or more processors implement the operations comprising:

• after a password authentication is passed, according to a password that is currently authenticated, determining a specified bit of an enabling identifier of password invalidation;
• wherein the enabling identifier of password invalidation is stored in the storage medium, and is configured for representing whether an invalidation operation is permitted to be performed to the password;
• setting the specified bit of the enabling identifier of password invalidation to be in a permitting state, and setting other bits to be in a non-permitting state, wherein the enabling identifier of password invalidation is in one-to-one correspondence with each password according to bits, and merely when one of the bits of the enabling identifier of password invalidation is in the permitting state, the invalidation operation is permitted to be performed to the password;
• and
• after an invalidation request of the password is received, performing the invalidation operation to the password corresponding to the specified bit.