70 lines
2.6 KiB
Java
70 lines
2.6 KiB
Java
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package o;
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import java.security.GeneralSecurityException;
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import java.security.InvalidAlgorithmParameterException;
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import java.util.Arrays;
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import javax.crypto.Cipher;
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import javax.crypto.SecretKey;
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import javax.crypto.spec.SecretKeySpec;
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import o.uAf;
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/* renamed from: o.yNf, reason: case insensitive filesystem */
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/* loaded from: classes2.dex */
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public final class C17618yNf implements InterfaceC16851roi {
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private static uAf.RVV a = uAf.RVV.ALGORITHM_NOT_FIPS;
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private final SecretKey b;
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private byte[] c;
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private byte[] e;
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public C17618yNf(byte[] bArr) throws GeneralSecurityException {
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ifG.e(bArr.length);
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SecretKeySpec secretKeySpec = new SecretKeySpec(bArr, "AES");
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this.b = secretKeySpec;
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if (!a.d()) {
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throw new GeneralSecurityException("Can not use AES-CMAC in FIPS-mode.");
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}
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Cipher e = YYT.a.e("AES/ECB/NoPadding");
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e.init(1, secretKeySpec);
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byte[] c = UKk.c(e.doFinal(new byte[16]));
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this.c = c;
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this.e = UKk.c(c);
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}
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@Override // o.InterfaceC16851roi
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public final byte[] c(byte[] bArr, int i) throws GeneralSecurityException {
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byte[] c;
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if (i > 16) {
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throw new InvalidAlgorithmParameterException("outputLength too large, max is 16 bytes");
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}
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if (!a.d()) {
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throw new GeneralSecurityException("Can not use AES-CMAC in FIPS-mode.");
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}
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Cipher e = YYT.a.e("AES/ECB/NoPadding");
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e.init(1, this.b);
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int max = Math.max(1, (int) Math.ceil(bArr.length / 16.0d));
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if ((max << 4) == bArr.length) {
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c = vil.c(bArr, (max - 1) << 4, this.c, 0, 16);
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} else {
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byte[] copyOfRange = Arrays.copyOfRange(bArr, (max - 1) << 4, bArr.length);
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if (copyOfRange.length >= 16) {
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throw new IllegalArgumentException("x must be smaller than a block.");
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}
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byte[] copyOf = Arrays.copyOf(copyOfRange, 16);
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copyOf[copyOfRange.length] = Byte.MIN_VALUE;
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byte[] bArr2 = this.e;
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if (copyOf.length != bArr2.length) {
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throw new IllegalArgumentException("The lengths of x and y should match.");
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}
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c = vil.c(copyOf, 0, bArr2, 0, copyOf.length);
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}
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byte[] bArr3 = new byte[16];
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for (int i2 = 0; i2 < max - 1; i2++) {
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bArr3 = e.doFinal(vil.c(bArr3, 0, bArr, i2 << 4, 16));
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}
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if (c.length == bArr3.length) {
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return Arrays.copyOf(e.doFinal(vil.c(c, 0, bArr3, 0, c.length)), i);
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}
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throw new IllegalArgumentException("The lengths of x and y should match.");
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}
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}
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