42 lines
1.6 KiB
Java
42 lines
1.6 KiB
Java
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package org.bouncycastle.crypto.generators;
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import org.bouncycastle.crypto.KeyGenerationParameters;
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import org.bouncycastle.crypto.params.DESedeParameters;
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/* loaded from: classes6.dex */
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public class DESedeKeyGenerator extends DESKeyGenerator {
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private static final int MAX_IT = 20;
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@Override // org.bouncycastle.crypto.generators.DESKeyGenerator, org.bouncycastle.crypto.CipherKeyGenerator
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public void init(KeyGenerationParameters keyGenerationParameters) {
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this.random = keyGenerationParameters.getRandom();
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this.strength = (keyGenerationParameters.getStrength() + 7) / 8;
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if (this.strength == 0 || this.strength == 21) {
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this.strength = 24;
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} else if (this.strength == 14) {
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this.strength = 16;
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} else if (this.strength != 24 && this.strength != 16) {
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throw new IllegalArgumentException("DESede key must be 192 or 128 bits long.");
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}
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}
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@Override // org.bouncycastle.crypto.generators.DESKeyGenerator, org.bouncycastle.crypto.CipherKeyGenerator
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public byte[] generateKey() {
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int i = this.strength;
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byte[] bArr = new byte[i];
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int i2 = 0;
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while (true) {
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this.random.nextBytes(bArr);
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DESedeParameters.setOddParity(bArr);
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i2++;
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if (i2 >= 20 || (!DESedeParameters.isWeakKey(bArr, 0, i) && DESedeParameters.isRealEDEKey(bArr, 0))) {
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break;
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}
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}
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if (DESedeParameters.isWeakKey(bArr, 0, i) || !DESedeParameters.isRealEDEKey(bArr, 0)) {
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throw new IllegalStateException("Unable to generate DES-EDE key");
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}
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return bArr;
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}
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}
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