sha512_256
Hash the input data with SHA-512/256, according to NIST.FIPS.180-4.
Precompile address
0x0100000000000000000000000000000000000102
Gas cost
115 gas, then 13 gas per word
Example
bytes32 result = sha512_256(abi.encodePacked("input data"));
Warning: SHA-512 vs SHA-512/256 Length-Extension Attacks
SHA-512 is vulnerable to length-extension attacks, which are relevant if you are computing the hash of a secret message. The SHA-512/256 variant is not vulnerable to length-extension attacks.
function sha512_256(bytes memory input) view returns (bytes32 result);
Parameters
| Name | Type | Description |
|---|---|---|
input | bytes | Bytes to hash. |
Returns
| Name | Type | Description |
|---|---|---|
result | bytes32 | 32 byte digest. |