kitetorrent/io.github.yuroyami.kitetorrent.crypto/MseCrypto/obfuscatedStreamKeyHash

obfuscatedStreamKeyHash

fun obfuscatedStreamKeyHash(secret: ByteArray, streamKey: Sha1Hash): Sha1Hash

The obfuscated stream-key hash written on the wire: SHA1("req2" + SKEY) xor SHA1("req3" + S) (libtorrent write_pe3_sync's obfsc_hash). The receiver recovers SHA1("req2" + SKEY) by XOR-ing the received value with req3XorMask and matches it against each candidate torrent's info-hash.