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

package com.google.crypto.tink.aead;

import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.security.GeneralSecurityException;
import java.security.InvalidAlgorithmParameterException;
import javax.annotation.Nullable;
import com.google.errorprone.annotations.Immutable;
import java.util.Objects;

public final class AesGcmSivParameters extends AeadParameters
{
    private final int keySizeBytes;
    private final Variant variant;
    
    private AesGcmSivParameters(final int keySizeBytes, final Variant variant) {
        this.keySizeBytes = keySizeBytes;
        this.variant = variant;
    }
    
    public static Builder builder() {
        return new Builder();
    }
    
    public int getKeySizeBytes() {
        return this.keySizeBytes;
    }
    
    public Variant getVariant() {
        return this.variant;
    }
    
    @Override
    public boolean equals(final Object o) {
        if (!(o instanceof AesGcmSivParameters)) {
            return false;
        }
        final AesGcmSivParameters that = (AesGcmSivParameters)o;
        return that.getKeySizeBytes() == this.getKeySizeBytes() && that.getVariant() == this.getVariant();
    }
    
    @Override
    public int hashCode() {
        return Objects.hash(AesGcmSivParameters.class, this.keySizeBytes, this.variant);
    }
    
    @Override
    public boolean hasIdRequirement() {
        return this.variant != Variant.NO_PREFIX;
    }
    
    @Override
    public String toString() {
        return "AesGcmSiv Parameters (variant: " + this.variant + ", " + this.keySizeBytes + "-byte key)";
    }
    
    @Immutable
    public static final class Variant
    {
        public static final Variant TINK;
        public static final Variant CRUNCHY;
        public static final Variant NO_PREFIX;
        private final String name;
        
        private Variant(final String name) {
            this.name = name;
        }
        
        @Override
        public String toString() {
            return this.name;
        }
        
        static {
            TINK = new Variant("TINK");
            CRUNCHY = new Variant("CRUNCHY");
            NO_PREFIX = new Variant("NO_PREFIX");
        }
    }
    
    public static final class Builder
    {
        @Nullable
        private Integer keySizeBytes;
        private Variant variant;
        
        private Builder() {
            this.keySizeBytes = null;
            this.variant = Variant.NO_PREFIX;
        }
        
        @CanIgnoreReturnValue
        public Builder setKeySizeBytes(final int keySizeBytes) throws GeneralSecurityException {
            if (keySizeBytes != 16 && keySizeBytes != 32) {
                throw new InvalidAlgorithmParameterException(String.format("Invalid key size %d; only 16-byte and 32-byte AES keys are supported", keySizeBytes));
            }
            this.keySizeBytes = keySizeBytes;
            return this;
        }
        
        @CanIgnoreReturnValue
        public Builder setVariant(final Variant variant) {
            this.variant = variant;
            return this;
        }
        
        public AesGcmSivParameters build() throws GeneralSecurityException {
            if (this.keySizeBytes == null) {
                throw new GeneralSecurityException("Key size is not set");
            }
            if (this.variant == null) {
                throw new GeneralSecurityException("Variant is not set");
            }
            return new AesGcmSivParameters(this.keySizeBytes, this.variant, null);
        }
    }
}