cfac906f92
* WIP setting up Ethereum key CLI commands * Functional key gen and showing Ethereum address * Cleaned up changes * WIP setting up Ethereum key CLI commands * Functional key gen and showing Ethereum address * Cleaned up changes * Changed address to cosmos specific address * Remove default bech32 prefixes and add basic add command test * Changed Private key type to slice of bytes for compatibility and storability * switch back to using cosmos crypto Keybase interfaces * Changed key output to ethereum addressing instead of bitcoin and key generation to allow seeding from mnemonic and bip39 password * Updated show command and added test * Remove prefix requirement for showing keys and added existing keys commands to CLI temporarily * Removed unnecessary duplicate code * Readd prefixes for accounts temporarily * Fix linting issue * Remove TODO for setting PK to specific length of bytes (all functions use slice) * Cleaned up descriptions to remove multi-sigs
49 lines
1.2 KiB
Go
49 lines
1.2 KiB
Go
package types
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import (
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"fmt"
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"github.com/cosmos/ethermint/crypto"
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ethcmn "github.com/ethereum/go-ethereum/common"
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ethcrypto "github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/rlp"
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"github.com/pkg/errors"
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"golang.org/x/crypto/sha3"
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)
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// GenerateEthAddress generates an Ethereum address.
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func GenerateEthAddress() ethcmn.Address {
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priv, err := crypto.GenerateKey()
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if err != nil {
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panic(err)
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}
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return ethcrypto.PubkeyToAddress(priv.ToECDSA().PublicKey)
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}
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// ValidateSigner attempts to validate a signer for a given slice of bytes over
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// which a signature and signer is given. An error is returned if address
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// derived from the signature and bytes signed does not match the given signer.
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func ValidateSigner(signBytes, sig []byte, signer ethcmn.Address) error {
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pk, err := ethcrypto.SigToPub(signBytes, sig)
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if err != nil {
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return errors.Wrap(err, "failed to derive public key from signature")
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} else if ethcrypto.PubkeyToAddress(*pk) != signer {
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return fmt.Errorf("invalid signature for signer: %s", signer)
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}
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return nil
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}
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func rlpHash(x interface{}) (hash ethcmn.Hash) {
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hasher := sha3.NewLegacyKeccak256()
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// nolint:errcheck
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rlp.Encode(hasher, x)
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hasher.Sum(hash[:0])
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return hash
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}
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