Skip to content

Update crypto-hashes-and-collisions.md #73

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 1 commit into
base: master
Choose a base branch
from
Open
Changes from all commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,7 @@ A **collision** means the same hash value for two different inputs. For simple h

**Collisions** in the cryptographic hash functions are **extremely unlikely** to be found, so crypto **hashes** are considered to almost uniquely identify their corresponding input. Moreover, it is extremely hard to find an input message that hashes to given value.

Cryptographic hash functions are **one-way hash functions**, which are **infeasible to invert**. The chance to find a collision (by brute force) for a strong cryptographic hash function (like SHA-256) is extremely little. Let's define this in more details:
Cryptographic hash functions are **one-way hash functions**, which are **infeasible to invert**. The chance to find a collision (by brute force) for a strong cryptographic hash function (like SHA-256) is extremely small. Let's define this in more details:

* Let's have hash value `h`=`hash(p)` for certain strong cryptographic hash function `hash`.
* It is expected to be **extremely hard** to find an input `p'`, such that `hash(p')`=`h`.
Expand Down