Table of Contents
- 1 How many combinations are there for a password containing 8 letters?
- 2 How many 8 character passwords are there that can use uppercase letters or lowercase letters?
- 3 What is a good 8 character password?
- 4 How hard is it to crack an 8 character password?
- 5 How many combinations are there in a 6 character password?
- 6 How many alphabets can be used to create an 8 character password?
- 7 How much does it cost to make a 95 character password?
- 8 What is the character pool for a password?
How many combinations are there for a password containing 8 letters?
An eight-character password using only lowercase and uppercase characters has 200 billion possible combinations.
How many 8 character passwords are there that can use uppercase letters or lowercase letters?
Combination and length of the password
| Password consists of | Possible combinations |
|---|---|
| 5 characters (3 lowercase letters, 2 numbers) | 365= 60,466,176 |
| 7 characters (1 capital letter, 6 lowercase letters) | 527= 1,028,071,702,528 |
| 8 characters (4 lowercase letters, 2 special characters, 2 numbers) | 688= 457,163,239,653,376 |
How many different passwords are possible with 6 lowercase English letters?
308915776 to be exact. This is assuming you are able to select the same letter multiple times.
What is a good 8 character password?
Password is only 6 characters long. Password is 8 characters long. The password must contain at least three character categories among the following: Uppercase characters (A-Z)…Complexity requirements.
| Example | Valid | Reason |
|---|---|---|
| 42abcdef | No | Password contains only two character categories: digits and lowercase characters. |
How hard is it to crack an 8 character password?
As per this link, with speed of 1,000,000,000 Passwords/sec, cracking a 8 character password composed using 96 characters takes 83.5 days. Research presented at Password^12 in Norway shows that 8 character NTLM passwords are no longer safe.
How long does it take to crack a 100 character password?
10 thousand seconds is about 3 hours, so the attempt would take about 300 hours. If you mean literally a digit, 0–9, then an 8 digit code only represents the numbers from 00000000 to 99999999 – that is 100 million combinations.
How many combinations are there in a 6 character password?
If you create a password with 6 digits, there are a million possibilities. If you use, however, six lower-case letters, the number jumps to over 300 million. And if you use a combination of upper- and lower-case letters, you get 2 billion different combinations.
How many alphabets can be used to create an 8 character password?
We will use permutation instead of combinations to solve this as the arrangement of the 8 alphabets and numbers matters. Thus, Total No. of alphabets that can be used to create the 8 character password = 26 + 26 = 52 No. of numbers that can be used to create the 8 character password = 10 (0 to 9)
What are the character requirements for a password?
The password must contain at least one of the following: (lower case letters, upper case letters, digits, punctuations, special characters). Assume I have 95 ascii characters (lower case letters, upper case letters, digits, punctuations, special characters). lower case letters = $26$
How much does it cost to make a 95 character password?
Assume I have 95 ascii characters (lower case letters, upper case letters, digits, punctuations, special characters). lower case letters = $26$ upper case letters = $26$ digits = $10$ punctuations & special characters = $33$ The general formula for the possible passwords that I can from from these 95 characters is: $95^8$.
What is the character pool for a password?
If the password is only letters, the character pool is 26 (A-Z) upper or lower case accepted as the same. If upper and lower case are different, the character pool is 52 instead of 26.