hash – POFTUT

Tagged: hash

Apt Command "Hash Sum mismatch" Error and Solution On Ubuntu, Debian, Mint, Kali 0

Apt Command “Hash Sum mismatch” Error and Solution On Ubuntu, Debian, Mint, Kali

apt command is used to install, update, remove packages in Linux distributions like Ubuntu, Debian, Mint, Kali. apt is mainly used with the deb packages.  With the apt update or apt-get update command the repository information is downloaded to from the deb repositories to the local repositories. Hash is used to checking if the downloaded file is valid. If there is a problem we may face with the Hash Sum...

What Is SHA-256 and How To Calculate In Python, PHP, JavaScript, Go, Java, PowerShell Programming Languages? 0

What Is SHA-256 and How To Calculate In Python, PHP, JavaScript, Go, Java, PowerShell Programming Languages?

Hash algorithms are the heart of the cryptography and security. SHA-256 is a Secure Hash Algorithm which will generate an output hash value in 256 bit. SHA-256 is designed by the National Security Agency  (NSA). SHA-256 is one of the cryptographic hash functions. SHA-256 is also named one-way function where the generated hash value cannot be reversed theoretically. This makes SHA-256 very useful for password validation, challenge hash authentication, anti-tamper,...

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What Is MD5 Hash Checksum? How To Create and Validate MD5?

MD5 is a checksum or hash calculation method for files. MD5 checksum consists of 128-bit value which is generally expressed as the hexadecimal format with which consist of 32 characters. MD5 Attributes MD5 is a cryptography algorithm which provides some attributes which make it useful for different cases like security, operation etc. Here is the list of MD5 attributes. MD5 checksums are 128-bit values MD5 checksums can be expressed in different...

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What is Checksum and Related Tools with Calculation Examples

checksum is an function used to to calculated some value for given data. As we see check is used to check given data with calculated sum. Data may be little or very big like 1 MB, 10 MB etc. but the checksum value will be the same size bu different for each different type of data. checksum is also called hash values. Checksum Algorithms There are a lot of algorithms used to...

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HMAC (Hach-based Message Authentication Code) Tutorial

Hash-based Authentication Message Code or HMAC is used to authenticate message with hash functions. Message authentication is important mechanism in cyber security and used to check message authenticity. There are different ways and mechanisms for Message Authentication. Message Message is the data, text, image or whatever else we want to authenticate. Message is checked against it authenticity with given key by hashing them. Key Key is used to known by...

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Python Hash Strings and Lists to MD5, SHA256, SHA512 with Hashlib Module

Security is important part of the today IT and gains more respect from IT world. Hashing is a security measure to protect and check our data. In this tutorial we will look how to use hash with tables and strings. What is Hash Hash is a function where provided data will be converted into another expressions format and can not be recovered back with normal functions. MD5 MD5 is very...

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How To Crack Password with John The Ripper Incremental Mode

This is the most powerful cracking mode. Keep in mind that generally cracking will never end in this mode if there is no password because combinations are too large. Configurations about Incremental Mode can be found in configuration file [Incremental:MODE] section.

–incremental is used to specify incremental Mode Set Only Numeric Chars for Word List We can set only numeric characters to crack like below.

digits will fire numeric wordlist. Default...

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How To Crack Passwords with John The Ripper Single Crack Mode

As we stated before in single crack mode [List.Rules:Single] method of configuration file is used. In this mode login:password are cracked by using default password-list. Single Mode is much faster than Wordlist Mode. Linux Example We will crack linux passwords with Single Mode. First we need the create one file by unshadowing /etc/passwd and /etc/shadow like below

After this operation we will get a file named unshadowed like below

Now john can help...

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How To Crack Passwords with John The Ripper with GUI

Hackers preferred mode for tool usage is cli. John is developed for cli primarily. But there is also a gui part and can be installed like below. We named is johnny

We can provide login and password hashes like below     We can select password hash type manually but john provides auto detect option which is very good detecting password types. We can provide wordlist too from our...

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John The Ripper Modes and Configuration

John have a lot of different features and in order to configure these features it provides a lot of configuration options. In this tutorial we will look some of them. Getting Help There is two way to get help abut John. One is the simplest way by using -h .

And the other method is by using man page. Man page provides more details.

Modes John have 3 different...

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