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ens namehash in swift
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| import Foundation | |
| import CryptoSwift | |
| //https://github.com/ethereum/EIPs/blob/master/EIPS/eip-137.md | |
| extension String { | |
| public var namehash: String { | |
| var node = Array<UInt8>.init(repeating: 0x0, count: 32) | |
| if self.count > 0 { | |
| node = self.split(separator: ".") | |
| .map { Array($0.utf8).sha3(.keccak256) } | |
| .reversed() | |
| .reduce(node) { return ($0 + $1).sha3(.keccak256) } | |
| } | |
| return "0x" + node.toHexString() | |
| } | |
| } |
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assert("".namehash == "0x0000000000000000000000000000000000000000000000000000000000000000")
assert("eth".namehash == "0x93cdeb708b7545dc668eb9280176169d1c33cfd8ed6f04690a0bcc88a93fc4ae")
assert("foo.eth".namehash == "0xde9b09fd7c5f901e23a3f19fecc54828e9c848539801e86591bd9801b019f84f")