io.everitoken.sdk.java.provider.SignProvider Maven / Gradle / Ivy

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Official Java SDK for everiToken public chain. https://www.everitoken.io

There is a newer version: 1.4.6

package io.everitoken.sdk.java.provider;

import java.util.List;
import java.util.Objects;
import java.util.stream.Collectors;

import com.alibaba.fastjson.JSON;

import org.jetbrains.annotations.Contract;
import org.jetbrains.annotations.NotNull;

import io.everitoken.sdk.java.PrivateKey;
import io.everitoken.sdk.java.Signature;
import io.everitoken.sdk.java.apiResource.SignableDigest;
import io.everitoken.sdk.java.dto.Transaction;
import io.everitoken.sdk.java.dto.TransactionDigest;
import io.everitoken.sdk.java.exceptions.ApiResponseException;
import io.everitoken.sdk.java.param.NetParams;
import io.everitoken.sdk.java.param.RequestParams;

public class SignProvider implements SignProviderInterface {
    private final KeyProviderInterface keyProvider;

    private SignProvider(final KeyProviderInterface keyProvider) {
        this.keyProvider = keyProvider;
    }

    @NotNull
    @Contract("_ -> new")
    public static SignProvider of(@NotNull final KeyProviderInterface keyProvider) {
        Objects.requireNonNull(keyProvider);
        return new SignProvider(keyProvider);
    }

    public static TransactionDigest getSignableDigest(final NetParams netParams, final Transaction tx)
            throws ApiResponseException {
        return (new SignableDigest()).request(RequestParams.of(netParams, () -> JSON.toJSONString(tx)));
    }

    public KeyProviderInterface getKeyProvider() {
        return keyProvider;
    }

    public List sign(final byte[] bufToSign) {
        Objects.requireNonNull(keyProvider);
        final List keys = keyProvider.get();
        return keys.stream().map(privateKey -> Signature.signHash(bufToSign, privateKey)).collect(Collectors.toList());
    }
}