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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,90 @@ | ||
| /* | ||
| * Copyright ConsenSys AG. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with | ||
| * the License. You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on | ||
| * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the | ||
| * specific language governing permissions and limitations under the License. | ||
| * | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
| package irita.sdk.crypto.eth; | ||
|
|
||
| import org.bouncycastle.crypto.params.ECDomainParameters; | ||
| import org.bouncycastle.jcajce.provider.asymmetric.ec.BCECPrivateKey; | ||
| import org.bouncycastle.jcajce.provider.asymmetric.ec.BCECPublicKey; | ||
|
|
||
| import java.math.BigInteger; | ||
| import java.security.KeyPairGenerator; | ||
| import java.util.Arrays; | ||
| import java.util.Objects; | ||
|
|
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| import static com.google.common.base.Preconditions.checkNotNull; | ||
|
|
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| public class KeyPair { | ||
|
|
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| private final SECPPrivateKey privateKey; | ||
| private final SECPPublicKey publicKey; | ||
|
|
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| public KeyPair(final SECPPrivateKey privateKey, final SECPPublicKey publicKey) { | ||
| checkNotNull(privateKey); | ||
| checkNotNull(publicKey); | ||
| this.privateKey = privateKey; | ||
| this.publicKey = publicKey; | ||
| } | ||
|
|
||
| public static KeyPair generate(final KeyPairGenerator keyPairGenerator, final String algorithm) { | ||
| final java.security.KeyPair rawKeyPair = keyPairGenerator.generateKeyPair(); | ||
| final BCECPrivateKey privateKey = (BCECPrivateKey) rawKeyPair.getPrivate(); | ||
| final BCECPublicKey publicKey = (BCECPublicKey) rawKeyPair.getPublic(); | ||
|
|
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| final BigInteger privateKeyValue = privateKey.getD(); | ||
|
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| // Ethereum does not use encoded public keys like bitcoin - see | ||
| // https://en.bitcoin.it/wiki/Elliptic_Curve_Digital_Signature_Algorithm for details | ||
| // Additionally, as the first bit is a constant prefix (0x04) we ignore this value | ||
| final byte[] publicKeyBytes = publicKey.getQ().getEncoded(false); | ||
| final BigInteger publicKeyValue = | ||
| new BigInteger(1, Arrays.copyOfRange(publicKeyBytes, 1, publicKeyBytes.length)); | ||
|
|
||
| return new KeyPair( | ||
| SECPPrivateKey.create(privateKeyValue, algorithm), | ||
| SECPPublicKey.create(publicKeyValue, algorithm)); | ||
| } | ||
|
|
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| @Override | ||
| public int hashCode() { | ||
| return Objects.hash(privateKey, publicKey); | ||
| } | ||
|
|
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| @Override | ||
| public boolean equals(final Object other) { | ||
| if (!(other instanceof KeyPair)) { | ||
| return false; | ||
| } | ||
|
|
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| final KeyPair that = (KeyPair) other; | ||
| return this.privateKey.equals(that.privateKey) && this.publicKey.equals(that.publicKey); | ||
| } | ||
|
|
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| @Override | ||
| public String toString() { | ||
| return ("KeyPair{privateKey: " | ||
| + this.privateKey.toString() | ||
| + ", publicKey: " | ||
| + this.publicKey.toString() | ||
| + "]"); | ||
| } | ||
|
|
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| public SECPPrivateKey getPrivateKey() { | ||
| return privateKey; | ||
| } | ||
|
|
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| public SECPPublicKey getPublicKey() { | ||
| return publicKey; | ||
| } | ||
| } |
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