Imports github.com/aws/aws-sdk-go-v2/aws github.com/aws/aws-sdk-go-v2/service/kms github.com/aws/aws-sdk-go-v2/service/kms/types github.com/ethereum/go-ethereum/common github.com/ethereum/go-ethereum/crypto github.com/ethereum/go-ethereum/crypto/secp256k1 Standard library imports bytes context crypto/ecdsa crypto/x509/pkix encoding/asn1 fmt math/big