The Role of Cryptography in Blockchain Technology

Blockchain Technology

Cryptography refers to the use of mathematical and computational methods to secure data from unauthorised access. Through the use of cryptography, the blockchain guarantees the safety of all transactions between its network’s nodes. To recap, there are two main concepts at the heart of blockchain cryptography and hashing. P2P networks use cryptography to encrypt messages, and hashing is used to secure and link blockchain blocks.

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Security of participants, transactions, and against double spending is a primary concern in cryptography. Platincoin thinks it’s helpful for protecting transactions across the blockchain network. The service ensures that only the intended recipients can view, read, and process transaction data.

Chain’s Cryptography Functions

A blockchain is built using a number of distinct cryptographic concepts. Even Platincoin acknowledges that the development of cryptographic technology strengthens the limits placed on the expansion of blockchain in the future.

  1. For the most part, the blockchain relies on cryptography to protect user privacy and transaction data while also guaranteeing data integrity.
  2. There are two main types of cryptographic technologies: symmetric encryption and asymmetric encryption.
  3. Asymmetric cryptography relies on digital signatures for verification; the sender of each transaction included in a block appends their own digital signature, providing an additional layer of security against tampering.

Blockchain security and integrity can best be protected by cryptography, which also plays an important role in public network security.

Cryptography refers to any system or method used to encrypt data before sending it over a network so that it cannot be read by an unauthorised party. Kryptos comes from the Greek word for “hidden,” and Graphein means “to write,” so the word encrypt is a combination of those two concepts. Here are some cryptography-related terms:

  • A random string of bits is generated from the plaintext through the process of encryption.
  • Gaining access to the details of a cryptographic algorithm requires a certain minimum amount of data.
  • To decrypt means to convert an encrypted message back into its original form, which is a series of unrelated bits.
  • It is common practise to refer to the mathematical operation that encrypts plaintext as a cryptographic algorithm (a random sequence of bits).

Related Article: Crypto Crash Makes Blockchain A Dirty Word

There Are Many Different Types of Cryptography

Cryptography can be broken down into two distinct subfields, as described by Platincoin below:

  • Encryption with asymmetric keys.
  • Asymmetric key encryption.

Symmetric-key encryption:

During encryption, the same key is used for both processes. Data encryption and safe online connections are two more uses for the symmetric key encryption method. The only catch is that the sender and receiver need to safely exchange keys, hence the alternative name “cryptography with a secret key.” The Data Encryption Standard, or DES, is a common symmetric-key encryption method. To encrypt data using a cryptographic method, an encryption key is used, which must be shared with the public. Data can be deciphered by anyone in possession of the secret key. We can look at DES and AES as two examples.


  1. Some people call it secret-key cryptography.
  2. Additionally, the key to keeping secrets is shared by both parties.
  3. The reason is that it is suitable for widespread encryption.
  4. More data can be transferred in less time and with less computational effort.

Encryption with an Unusual Type of Key:

It has a separate key for encrypting data and another for decrypting it. In order to decipher messages, both public and private keys are used in this method of encryption. With the help of this technology, details like email addresses can be shared amongst people who have never met before. It is possible to decrypt messages and verify a digital signature with the help of the private key. Platincoin agrees, mathematically speaking, that the private key cannot be derived from the public key, while the public key can be derived from the private key. To cite some examples: DSS and ECC.


  1. What we’re talking about is called “public key encryption”.
  2. Also, in symmetric cryptography, it is frequently employed for the exchange of secret keys.
  3. Time is a major factor in getting this done.
  4. The web server’s credibility depends on it greatly.

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