A hash code is a digital fingerprint of an input data set, where the code is used to verify or identify the original document at a later time. A hash value is usually produced by applying hash function to an input value.
A hash is a mathematical formula that serves as a unique fingerprint for any given piece of data- essentially, it’s a shortened version of the file. A hash will always output the same value when given specific data this means that if we change even one character in our original document, the hash will not match.
A Blockchain hash is a digitized fingerprint of a document or set of data. it is used to verify whether or not that information has been tampered with or changed in any way.
A Blockchain hash is generated via a cryptographic function that compares an input block of data with a previously generated hash value. if the generated hash value matches the given data, it is determined that the input information hasn’t been altered.
A Blockchain hash is used to verify whether or not the data contained in a document has been interfered with. A Blockchain hash is created when a new block of information or data is added to the chain.
The information contained in the block is hashed, and then the hash value is further added to the end of the chain. Any time the data contained in the block is altered or changed in any way, the hash value will also change.
if the hash value doesn’t match the original data, it is determined that the information has been tampered with. If the hash value matches the original data, it is verified that the information has not been changed or tampered with.
The Blockchain is a chain of blocks of information that are verified and linked together chronologically using hash values. Each block is similar to a page in a book, and each page is verified using a hash value.
DIFFERENT TYPES OF HASH
- SHA-256: is one of the most commonly used hashing algorithms in Blockchain technology. It is used to verify whether or not the data contained in a block has been tampered with SHA-256 is used in the creation of a private and public key pair.
- MD5: is used to verify and validate the integrity of a file or data set. It creates a hash value that is 32 characters long. MD5 is used in the creation of a private and public key pair. An MD5 hash function converts a string of information into a 128-bit fingerprint. MD5 is frequently used as a checksum to ensure data integrity in the Blockchain. However, due to its age, MD5 suffer from extensive hash collision weaknesses, despite remaining one of the world’s most widely used algorithms.
- RIPEMD-160: is also used to verify and validate the integrity of a file or data set. It creates a hash value that is 20 characters long. RIPEMD-160 is used in the creation of a private and public key pair.
- CRC32: A cyclic redundancy check is an error-detecting code that is frequently used to detect accidental data changes. Because CEC32 always produces the same hash output when encoding the same data string, it is sometimes used as a hash algorithm for file integrity checks.
- Tiger Algorithm: The Tiger Algorithm is faster and more efficient than the MD% and SHA families. It has a 192-bit hashing mechanism and is commonly utilized in modern systems. Tiger2 of the Tiger Algorithm is a more advanced version of this algorithm that is more dynamic than Tiger. tiger was created using the virtually universal Merkle-Damgrd paradigm. The one-way compression function operates on 64-bit words, allowing for three words of state and eight words of information to be processed. There are 24 rounds, each with its own set of operations such as XOR and addition/subtraction, rotations, and S-box lookups, as well as pretty complex key scheduling mechanism for changing the 24 round keys from the 8 input words.