29 lines
705 B
Go
29 lines
705 B
Go
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package datasync
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import (
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"crypto/ecdsa"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/vacp2p/mvds/state"
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)
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func ToGroupID(data []byte) state.GroupID {
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g := state.GroupID{}
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copy(g[:], data[:])
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return g
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}
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// ToOneToOneGroupID returns a groupID for a onetoonechat, which is taken by
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// concatenating the bytes of the compressed keys, in ascending order by X
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func ToOneToOneGroupID(key1 *ecdsa.PublicKey, key2 *ecdsa.PublicKey) state.GroupID {
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pk1 := crypto.CompressPubkey(key1)
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pk2 := crypto.CompressPubkey(key2)
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var groupID []byte
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if key1.X.Cmp(key2.X) == -1 {
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groupID = append(pk1, pk2...)
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} else {
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groupID = append(pk2, pk1...)
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}
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return ToGroupID(crypto.Keccak256(groupID))
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}
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