Cryptography is the writing or solving of codes. It has a long and rich history and has grown increasingly important in the age of technology.

Bitcoin actually uses and relies on cryptography extensively within its code. Without cryptography, there is no Bitcoin. If anyone ever breaks the cryptography that Bitcoin relies on, Bitcoin breaks.

Specifically, Bitcoin uses a cryptographic hash function called SHA256 to secure, verify, and perform tasks. This cryptography is also used in creating and verifying Digital Signatures.

Read more:

 

1. SHA256 Cryptographic Hash Function

 

2. Digital Signatures

3. Coursera Cryptography I

You can take a highly acclaimed, free course on Cryptography taught by renown cryptologist Dan Boneh, of Stanford University. Check it out!