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Topic: SHA256 and RIPEMD160 collisions (Read 478 times)

full member
Activity: 181
Merit: 102
August 21, 2017, 05:14:58 AM
#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?

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.
sr. member
Activity: 770
Merit: 305
jr. member
Activity: 36
Merit: 3
August 21, 2017, 03:23:52 AM
#1
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?
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