README
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Universal Signature Verifier (USigVerifier) Precompile
This is the USigVerifier (Universal Signature Verifier) precompile, responsible for verifying cryptographic signatures from supported source chains.
✅ Currently supported signature: ed25519
Generate ABI encoding
cd precompiles/usigverifier
solcjs USigVerifier.sol --abi
mv *.abi abi.json
jq --argjson abi "$(cat abi.json)" '{"_format": "hh-sol-artifact-1", "contractName": "USigVerifier", "sourceName": "precompiles/USigVerifier.sol", "bytecode": "0x", "deployedBytecode": "0x", "linkReferences": {}, "deployedLinkReferences": {}, "abi": $abi}' <<< '{}' > abi.json
cd ../../
# jq ".abi" abi.json | abigen --abi - --pkg usigverifier --type USigVerifier --out USigVerifier.go
Verification
# if you just get 0x, make sure the address is in the app_state["evm"]["params"]["active_static_precompiles"]
# precompile directly
cast abi-decode "verifyEd25519(bytes,bytes32,bytes)(bool)" `cast call 0x00000000000000000000000000000000000000ca "verifyEd25519(bytes,bytes32,bytes)" \
"5DgQvTf6BvVs5Y4vNFnB5iXvTQvZah7y2JbT1dFxN6T2" \
0x68656c6c6f776f726...bytes32_message_here \
0x6f7c...your_signature_here
`
Documentation
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Index ¶
Constants ¶
View Source
const ( USigVerifierPrecompileAddress = "0x00000000000000000000000000000000000000ca" // VerifyEd25519Gas is the gas cost for verifying an Ed25519 signature. VerifyEd25519Gas uint64 = 4000 )
View Source
const VerifyEd25519Method = "verifyEd25519"
Variables ¶
This section is empty.
Functions ¶
Types ¶
type Precompile ¶
type Precompile struct {
cmn.Precompile
}
Precompile defines the precompile
func NewPrecompile ¶
func NewPrecompile() (*Precompile, error)
func (Precompile) IsTransaction ¶
func (Precompile) IsTransaction(method *abi.Method) bool
IsTransaction checks if the given method name corresponds to a transaction or query.
func (Precompile) RequiredGas ¶
func (p Precompile) RequiredGas(input []byte) uint64
func (Precompile) VerifyEd25519 ¶
func (p Precompile) VerifyEd25519( method *abi.Method, args []interface{}, ) ([]byte, error)
Source Files
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