Module 0x1::substrate_hash

Cryptographic hashes:

• Keccak-256: see https://keccak.team/keccak.html

In addition, SHA2-256 and SHA3-256 are available in std::hash. Note that SHA3-256 is a variant of Keccak: it is NOT the same as Keccak-256.

Non-cryptograhic hashes:

• SipHash: an add-rotate-xor (ARX) based family of pseudorandom functions created by Jean-Philippe Aumasson and Daniel J. Bernstein in 2012

• Function sip_hash

• Function keccak256

• Function sha2_512

• Function sha3_512

• Function ripemd160

• Function blake2b_256

Function sip_hash

Returns the (non-cryptographic) SipHash of bytes. See https://en.wikipedia.org/wiki/SipHash

public fun sip_hash(bytes: vector<u8>): u64

native public fun sip_hash(bytes: vector<u8>): u64;

Function keccak256

Returns the Keccak-256 hash of bytes.

public fun keccak256(bytes: vector<u8>): vector<u8>

native public fun keccak256(bytes: vector<u8>): vector<u8>;

Function sha2_512

Returns the SHA2-512 hash of bytes.

public fun sha2_512(bytes: vector<u8>): vector<u8>

native public fun sha2_512(bytes: vector<u8>): vector<u8>;

Function sha3_512

Returns the SHA3-512 hash of bytes.

public fun sha3_512(bytes: vector<u8>): vector<u8>

native public fun sha3_512(bytes: vector<u8>): vector<u8>;

Function ripemd160

Returns the RIPEMD-160 hash of bytes.

WARNING: Only 80-bit security is provided by this function. This means an adversary who can compute roughly $2^{80}$ hashes will, with high probability, find a collision x_1 != x_2 such that RIPEMD-160(x_1) = RIPEMD-160(x_2).

public fun ripemd160(bytes: vector<u8>): vector<u8>

native public fun ripemd160(bytes: vector<u8>): vector<u8>;

Function blake2b_256

Returns the BLAKE2B-256 hash of bytes.

public fun blake2b_256(bytes: vector<u8>): vector<u8>

native public fun blake2b_256(bytes: vector<u8>): vector<u8>;