// 
// Decompiled by Procyon v0.6.0
// 

package com.google.crypto.tink.signature;

import com.google.crypto.tink.Parameters;
import java.util.Objects;
import com.google.crypto.tink.Key;
import com.google.crypto.tink.AccessesPartialKey;
import com.google.errorprone.annotations.RestrictedApi;
import java.security.GeneralSecurityException;
import com.google.crypto.tink.internal.OutputPrefixUtil;
import javax.annotation.Nullable;
import com.google.crypto.tink.util.Bytes;
import com.google.errorprone.annotations.Immutable;

@Immutable
public final class Ed25519PublicKey extends SignaturePublicKey
{
    private final Ed25519Parameters parameters;
    private final Bytes publicKeyBytes;
    private final Bytes outputPrefix;
    @Nullable
    private final Integer idRequirement;
    
    private Ed25519PublicKey(final Ed25519Parameters parameters, final Bytes publicKeyBytes, final Bytes outputPrefix, @Nullable final Integer idRequirement) {
        this.parameters = parameters;
        this.publicKeyBytes = publicKeyBytes;
        this.outputPrefix = outputPrefix;
        this.idRequirement = idRequirement;
    }
    
    private static Bytes createOutputPrefix(final Ed25519Parameters parameters, @Nullable final Integer idRequirement) {
        if (parameters.getVariant() == Ed25519Parameters.Variant.NO_PREFIX) {
            return OutputPrefixUtil.EMPTY_PREFIX;
        }
        if (parameters.getVariant() == Ed25519Parameters.Variant.CRUNCHY || parameters.getVariant() == Ed25519Parameters.Variant.LEGACY) {
            return OutputPrefixUtil.getLegacyOutputPrefix(idRequirement);
        }
        if (parameters.getVariant() == Ed25519Parameters.Variant.TINK) {
            return OutputPrefixUtil.getTinkOutputPrefix(idRequirement);
        }
        throw new IllegalStateException("Unknown Variant: " + parameters.getVariant());
    }
    
    @Override
    public Bytes getOutputPrefix() {
        return this.outputPrefix;
    }
    
    @RestrictedApi(explanation = "Accessing parts of keys can produce unexpected incompatibilities, annotate the function with @AccessesPartialKey", link = "https://developers.google.com/tink/design/access_control#accessing_partial_keys", allowedOnPath = ".*Test\\.java", allowlistAnnotations = { AccessesPartialKey.class })
    @AccessesPartialKey
    public static Ed25519PublicKey create(final Bytes publicKeyBytes) throws GeneralSecurityException {
        return create(Ed25519Parameters.Variant.NO_PREFIX, publicKeyBytes, null);
    }
    
    @RestrictedApi(explanation = "Accessing parts of keys can produce unexpected incompatibilities, annotate the function with @AccessesPartialKey", link = "https://developers.google.com/tink/design/access_control#accessing_partial_keys", allowedOnPath = ".*Test\\.java", allowlistAnnotations = { AccessesPartialKey.class })
    public static Ed25519PublicKey create(final Ed25519Parameters.Variant variant, final Bytes publicKeyBytes, @Nullable final Integer idRequirement) throws GeneralSecurityException {
        final Ed25519Parameters parameters = Ed25519Parameters.create(variant);
        if (!variant.equals(Ed25519Parameters.Variant.NO_PREFIX) && idRequirement == null) {
            throw new GeneralSecurityException("For given Variant " + variant + " the value of idRequirement must be non-null");
        }
        if (variant.equals(Ed25519Parameters.Variant.NO_PREFIX) && idRequirement != null) {
            throw new GeneralSecurityException("For given Variant NO_PREFIX the value of idRequirement must be null");
        }
        if (publicKeyBytes.size() != 32) {
            throw new GeneralSecurityException("Ed25519 key must be constructed with key of length 32 bytes, not " + publicKeyBytes.size());
        }
        return new Ed25519PublicKey(parameters, publicKeyBytes, createOutputPrefix(parameters, idRequirement), idRequirement);
    }
    
    @RestrictedApi(explanation = "Accessing parts of keys can produce unexpected incompatibilities, annotate the function with @AccessesPartialKey", link = "https://developers.google.com/tink/design/access_control#accessing_partial_keys", allowedOnPath = ".*Test\\.java", allowlistAnnotations = { AccessesPartialKey.class })
    public Bytes getPublicKeyBytes() {
        return this.publicKeyBytes;
    }
    
    @Override
    public Ed25519Parameters getParameters() {
        return this.parameters;
    }
    
    @Nullable
    @Override
    public Integer getIdRequirementOrNull() {
        return this.idRequirement;
    }
    
    @Override
    public boolean equalsKey(final Key o) {
        if (!(o instanceof Ed25519PublicKey)) {
            return false;
        }
        final Ed25519PublicKey that = (Ed25519PublicKey)o;
        return that.parameters.equals(this.parameters) && that.publicKeyBytes.equals(this.publicKeyBytes) && Objects.equals(that.idRequirement, this.idRequirement);
    }
}