32 lines
1.1 KiB
Java
32 lines
1.1 KiB
Java
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package com.google.firebase.installations;
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import android.util.Base64;
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import java.nio.ByteBuffer;
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import java.nio.charset.Charset;
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import java.util.UUID;
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/* loaded from: classes2.dex */
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public class RandomFidGenerator {
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private static final byte FID_4BIT_PREFIX = Byte.parseByte("01110000", 2);
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private static final byte REMOVE_PREFIX_MASK = Byte.parseByte("00001111", 2);
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public String createRandomFid() {
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byte[] bytesFromUUID = getBytesFromUUID(UUID.randomUUID(), new byte[17]);
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byte b = bytesFromUUID[0];
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bytesFromUUID[16] = b;
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bytesFromUUID[0] = (byte) ((b & REMOVE_PREFIX_MASK) | FID_4BIT_PREFIX);
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return encodeFidBase64UrlSafe(bytesFromUUID);
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}
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private static String encodeFidBase64UrlSafe(byte[] bArr) {
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return new String(Base64.encode(bArr, 11), Charset.defaultCharset()).substring(0, 22);
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}
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private static byte[] getBytesFromUUID(UUID uuid, byte[] bArr) {
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ByteBuffer wrap = ByteBuffer.wrap(bArr);
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wrap.putLong(uuid.getMostSignificantBits());
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wrap.putLong(uuid.getLeastSignificantBits());
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return wrap.array();
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}
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}
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