4110 Crypto

Bitcoin

Electronic payment system without central trust
How are transactions verified?

They are signed with a user's private key (can be checked using public key)
Collision resistance
- For some hash function H, H is collision resistant if it is hard to find x != y such that,
- H(x)=H(y)
Hiding property

Given H(x)=y, if x is unknown it is hard/impossible to find it from y
Hash function used by bitcoin

SHA and the SHA again
Proof of work function

Find y=H(Prev-Hash || NONCE || ...) <= Target

Author

Ant

357192

Card Set

4110 Crypto

Description

Updated

2021-12-13T03:57:13Z

Show Answers