SHA256 and RIPEMD160 collisions | Bitcointalksearch.org

efeaydin

full member

Activity: 181

Merit: 102

Quote from: coder0x15 on August 21, 2017, 02:23:52 AM

H = ripemd160(sha256(ECMultiply(A,G)))

A - 32-byte number,

H - 20-byte number,

G - generator point,

ECMultiply - elliptic curve point multiplication.

Is it true that there is many A that have the same H?

Yes, it is possible but the possibility is too low.

SHA256 hashes are almost unique. I don't think that anyone has found a SHA256.

amaclin1

sr. member

Activity: 770

Merit: 305

yes
https://en.wikipedia.org/wiki/Pigeonhole_principle

coder0x15

jr. member

Activity: 36

Merit: 3

H = ripemd160(sha256(ECMultiply(A,G)))

A - 32-byte number,

H - 20-byte number,

G - generator point,

ECMultiply - elliptic curve point multiplication.

Is it true that there is many A that have the same H?

Topic: SHA256 and RIPEMD160 collisions (Read 488 times)