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Questions - passwords

Is there a way to generate a HOTP with time limitation?

For example, I want to get a HOTP that can only be used in 10 minutes. Not TOTP cause it's possible that when users get the code there are only 10 seconds left.
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AkiraVoid

algorithm

passwords

verification

one-time-password

totp

Votes: 0

Answers: 1

Latest Answer

Thanks @PaulHankin! We can use the TOTP solution which can generate a one-time password every 1 minute, and when we got user’s input, we can check if there’s a TOTP generated in last 10 minutes matche...
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AkiraVoid

How can I get the password to return back to password request if an invalid password is entered in Java?

I am trying to get the password to return and re-ask for the password if an invalid password is entered. And if a password is invalid 3 consecutive times, the system should terminate. Is there an issu...
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Kivan Ilangakoon

java

validation

passwords

Votes: 0

Answers: 2

Latest Answer

You need to put this entire logic in a while loop that keeps tracks of invalidCount. The other solution is to put the entire logic in a while loop which is always true and it breaks out of the loop in...
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Gurkirat Singh Guliani

Do I need to include -n option when encoding a password using base64?

I read somewhere that when encoding a password in base64, I should use echo -n to prevent the newline from being included in the encoded value. For example, echo changeme | base64 Y2hhbmdlbWUK echo -...
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PatS

base64

passwords

Votes: 0

Answers: 1

Latest Answer

When you use an online converter to decode it to hex, you'll see that the first string becomes 6368616e67656d650a and has 0a (ASCII Linefeed) on the end, which the second doesn't have. So the answer i...
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jps

How can I check for special characters in password validation in Java?

I am trying to get the code to check for special characters entered, however, I am not getting any validation errors when special characters are not entered in the password. Is there a reason why spec...
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Kivan Ilangakoon

java

passwords

special-characters

Votes: 0

Answers: 2

Latest Answer

What you should do this instead in this line : if(specialCounter != 1) System.out.println("Password should contain only 1 special characters"); if it is not equal to 0, it will throw th...
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Romin Mart

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