# Tag Info

Evaluating, we have that Sha_1(38607310235)=6502c8f9f5c222b9598d4e074fd3431f506948bc So, I'm guessing the question you're actually asking is: Given an 11 digit number $x$, find $y$ such that $L[H(y)]=x$, where $L(\cdot)$ takes the last 11 hexadecimal characters, and $H(\cdot)$ is the SHA-1 hash function This problem is believed to be hard to do, so ...