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deriving an ethereum address from a nostr pubkey or checking if they match
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| module github.com/fiatjaf/ethereum-nostr | |
| go 1.20 | |
| require ( | |
| github.com/btcsuite/btcd/btcec/v2 v2.3.2 | |
| github.com/nbd-wtf/go-nostr v0.19.5 | |
| golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9 | |
| ) | |
| require ( | |
| github.com/btcsuite/btcd/chaincfg/chainhash v1.0.1 // indirect | |
| github.com/decred/dcrd/crypto/blake256 v1.0.0 // indirect | |
| github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 // indirect | |
| github.com/gobwas/httphead v0.1.0 // indirect | |
| github.com/gobwas/pool v0.2.1 // indirect | |
| github.com/gobwas/ws v1.2.0 // indirect | |
| github.com/josharian/intern v1.0.0 // indirect | |
| github.com/mailru/easyjson v0.7.7 // indirect | |
| github.com/puzpuzpuz/xsync v1.5.2 // indirect | |
| github.com/tidwall/gjson v1.14.4 // indirect | |
| github.com/tidwall/match v1.1.1 // indirect | |
| github.com/tidwall/pretty v1.2.0 // indirect | |
| golang.org/x/exp v0.0.0-20221106115401-f9659909a136 // indirect | |
| golang.org/x/net v0.10.0 // indirect | |
| golang.org/x/sys v0.10.0 // indirect | |
| ) |
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| github.com/btcsuite/btcd/btcec/v2 v2.3.2 h1:5n0X6hX0Zk+6omWcihdYvdAlGf2DfasC0GMf7DClJ3U= | |
| github.com/btcsuite/btcd/btcec/v2 v2.3.2/go.mod h1:zYzJ8etWJQIv1Ogk7OzpWjowwOdXY1W/17j2MW85J04= | |
| github.com/btcsuite/btcd/chaincfg/chainhash v1.0.1 h1:q0rUy8C/TYNBQS1+CGKw68tLOFYSNEs0TFnxxnS9+4U= | |
| github.com/btcsuite/btcd/chaincfg/chainhash v1.0.1/go.mod h1:7SFka0XMvUgj3hfZtydOrQY2mwhPclbT2snogU7SQQc= | |
| github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= | |
| github.com/decred/dcrd/crypto/blake256 v1.0.0 h1:/8DMNYp9SGi5f0w7uCm6d6M4OU2rGFK09Y2A4Xv7EE0= | |
| github.com/decred/dcrd/crypto/blake256 v1.0.0/go.mod h1:sQl2p6Y26YV+ZOcSTP6thNdn47hh8kt6rqSlvmrXFAc= | |
| github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 h1:YLtO71vCjJRCBcrPMtQ9nqBsqpA1m5sE92cU+pd5Mcc= | |
| github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1/go.mod h1:hyedUtir6IdtD/7lIxGeCxkaw7y45JueMRL4DIyJDKs= | |
| github.com/gobwas/httphead v0.1.0 h1:exrUm0f4YX0L7EBwZHuCF4GDp8aJfVeBrlLQrs6NqWU= | |
| github.com/gobwas/httphead v0.1.0/go.mod h1:O/RXo79gxV8G+RqlR/otEwx4Q36zl9rqC5u12GKvMCM= | |
| github.com/gobwas/pool v0.2.1 h1:xfeeEhW7pwmX8nuLVlqbzVc7udMDrwetjEv+TZIz1og= | |
| github.com/gobwas/pool v0.2.1/go.mod h1:q8bcK0KcYlCgd9e7WYLm9LpyS+YeLd8JVDW6WezmKEw= | |
| github.com/gobwas/ws v1.2.0 h1:u0p9s3xLYpZCA1z5JgCkMeB34CKCMMQbM+G8Ii7YD0I= | |
| github.com/gobwas/ws v1.2.0/go.mod h1:hRKAFb8wOxFROYNsT1bqfWnhX+b5MFeJM9r2ZSwg/KY= | |
| github.com/josharian/intern v1.0.0 h1:vlS4z54oSdjm0bgjRigI+G1HpF+tI+9rE5LLzOg8HmY= | |
| github.com/josharian/intern v1.0.0/go.mod h1:5DoeVV0s6jJacbCEi61lwdGj/aVlrQvzHFFd8Hwg//Y= | |
| github.com/mailru/easyjson v0.7.7 h1:UGYAvKxe3sBsEDzO8ZeWOSlIQfWFlxbzLZe7hwFURr0= | |
| github.com/mailru/easyjson v0.7.7/go.mod h1:xzfreul335JAWq5oZzymOObrkdz5UnU4kGfJJLY9Nlc= | |
| github.com/nbd-wtf/go-nostr v0.19.5 h1:BdNTIKVJOyxRJwxzlblJqV7sja4pmCYFBXQdCDVowhI= | |
| github.com/nbd-wtf/go-nostr v0.19.5/go.mod h1:F9y6+M8askJCjilLgMC3rD0moA6UtG1MCnyClNYXeys= | |
| github.com/puzpuzpuz/xsync v1.5.2 h1:yRAP4wqSOZG+/4pxJ08fPTwrfL0IzE/LKQ/cw509qGY= | |
| github.com/puzpuzpuz/xsync v1.5.2/go.mod h1:K98BYhX3k1dQ2M63t1YNVDanbwUPmBCAhNmVrrxfiGg= | |
| github.com/tidwall/gjson v1.14.4 h1:uo0p8EbA09J7RQaflQ1aBRffTR7xedD2bcIVSYxLnkM= | |
| github.com/tidwall/gjson v1.14.4/go.mod h1:/wbyibRr2FHMks5tjHJ5F8dMZh3AcwJEMf5vlfC0lxk= | |
| github.com/tidwall/match v1.1.1 h1:+Ho715JplO36QYgwN9PGYNhgZvoUSc9X2c80KVTi+GA= | |
| github.com/tidwall/match v1.1.1/go.mod h1:eRSPERbgtNPcGhD8UCthc6PmLEQXEWd3PRB5JTxsfmM= | |
| github.com/tidwall/pretty v1.2.0 h1:RWIZEg2iJ8/g6fDDYzMpobmaoGh5OLl4AXtGUGPcqCs= | |
| github.com/tidwall/pretty v1.2.0/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU= | |
| golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= | |
| golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9 h1:psW17arqaxU48Z5kZ0CQnkZWQJsqcURM6tKiBApRjXI= | |
| golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto= | |
| golang.org/x/exp v0.0.0-20221106115401-f9659909a136 h1:Fq7F/w7MAa1KJ5bt2aJ62ihqp9HDcRuyILskkpIAurw= | |
| golang.org/x/exp v0.0.0-20221106115401-f9659909a136/go.mod h1:CxIveKay+FTh1D0yPZemJVgC/95VzuuOLq5Qi4xnoYc= | |
| golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg= | |
| golang.org/x/net v0.10.0 h1:X2//UzNDwYmtCLn7To6G58Wr6f5ahEAQgKNzv9Y951M= | |
| golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg= | |
| golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= | |
| golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= | |
| golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= | |
| golang.org/x/sys v0.10.0 h1:SqMFp9UcQJZa+pmYuAKjd9xq1f0j5rLcDIk0mj4qAsA= | |
| golang.org/x/sys v0.10.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= | |
| golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= |
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| package main | |
| import ( | |
| "encoding/hex" | |
| "fmt" | |
| "strings" | |
| "github.com/btcsuite/btcd/btcec/v2" | |
| "github.com/nbd-wtf/go-nostr" | |
| "golang.org/x/crypto/sha3" | |
| ) | |
| func main() { | |
| sk := "245ec11906ea42186381c6f18d248e95e532ce1de517f2b32768fda20b5c61bd" | |
| ethAddress := "0x922307C3B62D2f31280d49AfE52CD8E5C06d761E" | |
| pk, err := nostr.GetPublicKey(sk) | |
| if err != nil { | |
| panic(err) | |
| } | |
| fmt.Println("root secret key:\t", sk) | |
| fmt.Println("nostr (x-only) pubkey:\t", pk) | |
| fmt.Println("ethereum address:\t", ethAddress) | |
| fmt.Println("does it match?\t\t", doesNostrKeyCorrespondToEthereumAddress(pk, ethAddress)) | |
| } | |
| func doesNostrKeyCorrespondToEthereumAddress(nostrPubKey string, ethAddress string) bool { | |
| ethAddress = strings.ToLower(ethAddress) | |
| ethAddress = strings.TrimPrefix(ethAddress, "0x") | |
| for _, prefix := range []string{"02", "03"} { | |
| pkBytes, err := hex.DecodeString(prefix + nostrPubKey) | |
| if err != nil { | |
| continue | |
| } | |
| fullPk, err := btcec.ParsePubKey(pkBytes) | |
| if err != nil { | |
| continue | |
| } | |
| uncompressed := fullPk.SerializeUncompressed() | |
| hash := sha3.NewLegacyKeccak256() | |
| hash.Write(uncompressed[1:]) | |
| res := hash.Sum(nil) | |
| resH := hex.EncodeToString(res) | |
| if resH[24:64] == ethAddress { | |
| return true | |
| } | |
| } | |
| return false | |
| } |
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