package crypto import ( "github.com/nspcc-dev/neo-go/pkg/interop" "github.com/nspcc-dev/neo-go/pkg/interop/contract" ) // Hash represents CryptoLib contract hash. const Hash = "\x1b\xf5\x75\xab\x11\x89\x68\x84\x13\x61\x0a\x35\xa1\x28\x86\xcd\xe0\xb6\x6c\x72" // NamedCurve represents named elliptic curve. type NamedCurve byte // Various named elliptic curves. const ( Secp256k1 NamedCurve = 22 Secp256r1 NamedCurve = 23 ) // Sha256 calls `sha256` method of native CryptoLib contract and computes SHA256 hash of b. func Sha256(b []byte) interop.Hash256 { return contract.Call(interop.Hash160(Hash), "sha256", contract.NoneFlag, b).(interop.Hash256) } // Ripemd160 calls `ripemd160` method of native CryptoLib contract and computes RIPEMD160 hash of b. func Ripemd160(b []byte) interop.Hash160 { return contract.Call(interop.Hash160(Hash), "ripemd160", contract.NoneFlag, b).(interop.Hash160) } // VerifyWithECDsa calls `verifyWithECDsa` method of native CryptoLib contract and checks that sig is // correct msg's signature for a given pub (serialized public key on a given curve). func VerifyWithECDsa(msg []byte, pub interop.PublicKey, sig interop.Signature, curve NamedCurve) bool { return contract.Call(interop.Hash160(Hash), "verifyWithECDsa", contract.NoneFlag, msg, pub, sig, curve).(bool) }