69 lines
2.6 KiB
Java
69 lines
2.6 KiB
Java
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package org.bouncycastle.pqc.crypto;
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import org.bouncycastle.crypto.CipherParameters;
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import org.bouncycastle.crypto.Digest;
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import org.bouncycastle.crypto.Signer;
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import org.bouncycastle.crypto.params.AsymmetricKeyParameter;
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import org.bouncycastle.crypto.params.ParametersWithRandom;
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/* loaded from: classes6.dex */
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public class DigestingMessageSigner implements Signer {
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private boolean forSigning;
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private final Digest messDigest;
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private final MessageSigner messSigner;
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@Override // org.bouncycastle.crypto.Signer
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public boolean verifySignature(byte[] bArr) {
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if (this.forSigning) {
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throw new IllegalStateException("DigestingMessageSigner not initialised for verification");
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}
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byte[] bArr2 = new byte[this.messDigest.getDigestSize()];
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this.messDigest.doFinal(bArr2, 0);
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return this.messSigner.verifySignature(bArr2, bArr);
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}
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@Override // org.bouncycastle.crypto.Signer
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public void update(byte[] bArr, int i, int i2) {
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this.messDigest.update(bArr, i, i2);
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}
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@Override // org.bouncycastle.crypto.Signer
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public void update(byte b) {
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this.messDigest.update(b);
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}
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@Override // org.bouncycastle.crypto.Signer
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public void reset() {
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this.messDigest.reset();
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}
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@Override // org.bouncycastle.crypto.Signer
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public void init(boolean z, CipherParameters cipherParameters) {
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this.forSigning = z;
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AsymmetricKeyParameter asymmetricKeyParameter = cipherParameters instanceof ParametersWithRandom ? (AsymmetricKeyParameter) ((ParametersWithRandom) cipherParameters).getParameters() : (AsymmetricKeyParameter) cipherParameters;
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if (z && !asymmetricKeyParameter.isPrivate()) {
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throw new IllegalArgumentException("Signing Requires Private Key.");
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}
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if (!z && asymmetricKeyParameter.isPrivate()) {
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throw new IllegalArgumentException("Verification Requires Public Key.");
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}
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reset();
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this.messSigner.init(z, cipherParameters);
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}
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@Override // org.bouncycastle.crypto.Signer
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public byte[] generateSignature() {
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if (!this.forSigning) {
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throw new IllegalStateException("DigestingMessageSigner not initialised for signature generation.");
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}
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byte[] bArr = new byte[this.messDigest.getDigestSize()];
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this.messDigest.doFinal(bArr, 0);
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return this.messSigner.generateSignature(bArr);
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}
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public DigestingMessageSigner(MessageSigner messageSigner, Digest digest) {
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this.messSigner = messageSigner;
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this.messDigest = digest;
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}
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}
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