298 lines
11 KiB
Java
298 lines
11 KiB
Java
package org.bouncycastle.pqc.crypto.gmss.util;
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import com.google.common.primitives.UnsignedBytes;
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import org.bouncycastle.crypto.Digest;
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/* loaded from: classes6.dex */
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public class WinternitzOTSVerify {
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private Digest messDigestOTS;
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private int w;
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public int getLog(int i) {
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int i2 = 1;
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int i3 = 2;
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while (i3 < i) {
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i3 <<= 1;
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i2++;
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}
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return i2;
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}
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public int getSignatureLength() {
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int digestSize = this.messDigestOTS.getDigestSize();
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int i = this.w;
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int i2 = ((digestSize << 3) + (i - 1)) / i;
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int log = getLog((i2 << i) + 1);
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return digestSize * (i2 + (((log + r3) - 1) / this.w));
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}
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public byte[] Verify(byte[] bArr, byte[] bArr2) {
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int i;
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int i2;
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byte[] bArr3 = bArr2;
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int digestSize = this.messDigestOTS.getDigestSize();
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byte[] bArr4 = new byte[digestSize];
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int i3 = 0;
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this.messDigestOTS.update(bArr, 0, bArr.length);
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int digestSize2 = this.messDigestOTS.getDigestSize();
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byte[] bArr5 = new byte[digestSize2];
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this.messDigestOTS.doFinal(bArr5, 0);
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int i4 = digestSize << 3;
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int i5 = this.w;
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int i6 = ((i5 - 1) + i4) / i5;
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int log = getLog((i6 << i5) + 1);
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int i7 = this.w;
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int i8 = ((((log + i7) - 1) / i7) + i6) * digestSize;
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if (i8 != bArr3.length) {
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return null;
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}
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byte[] bArr6 = new byte[i8];
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int i9 = 8;
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if (8 % i7 == 0) {
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int i10 = 8 / i7;
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int i11 = (1 << i7) - 1;
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byte[] bArr7 = new byte[digestSize];
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int i12 = 0;
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int i13 = 0;
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int i14 = 0;
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while (i12 < digestSize2) {
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while (i3 < i10) {
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int i15 = bArr5[i12] & i11;
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i13 += i15;
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int i16 = digestSize2;
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int i17 = i14 * digestSize;
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int i18 = i10;
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System.arraycopy(bArr3, i17, bArr7, 0, digestSize);
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int i19 = i15;
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while (i19 < i11) {
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this.messDigestOTS.update(bArr7, 0, bArr7.length);
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bArr7 = new byte[this.messDigestOTS.getDigestSize()];
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this.messDigestOTS.doFinal(bArr7, 0);
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i19++;
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i13 = i13;
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i8 = i8;
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}
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System.arraycopy(bArr7, 0, bArr6, i17, digestSize);
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bArr5[i12] = (byte) (bArr5[i12] >>> this.w);
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i14++;
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i3++;
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digestSize2 = i16;
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bArr3 = bArr2;
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i10 = i18;
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}
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i12++;
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bArr3 = bArr2;
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i3 = 0;
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}
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i = i8;
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int i20 = (i6 << this.w) - i13;
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int i21 = 0;
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while (i21 < log) {
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int i22 = i14 * digestSize;
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System.arraycopy(bArr2, i22, bArr7, 0, digestSize);
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for (int i23 = i20 & i11; i23 < i11; i23++) {
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this.messDigestOTS.update(bArr7, 0, bArr7.length);
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bArr7 = new byte[this.messDigestOTS.getDigestSize()];
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this.messDigestOTS.doFinal(bArr7, 0);
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}
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System.arraycopy(bArr7, 0, bArr6, i22, digestSize);
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int i24 = this.w;
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i20 >>>= i24;
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i14++;
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i21 += i24;
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}
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} else {
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i = i8;
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if (i7 < 8) {
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int i25 = digestSize / i7;
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int i26 = (1 << i7) - 1;
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byte[] bArr8 = new byte[digestSize];
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int i27 = 0;
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int i28 = 0;
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int i29 = 0;
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int i30 = 0;
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while (i27 < i25) {
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int i31 = 0;
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long j = 0;
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while (i31 < this.w) {
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j ^= (bArr5[i28] & UnsignedBytes.MAX_VALUE) << (i31 << 3);
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i28++;
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i31++;
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bArr8 = bArr8;
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}
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int i32 = 0;
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while (i32 < i9) {
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int i33 = i27;
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int i34 = (int) (j & i26);
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i29 += i34;
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int i35 = i30 * digestSize;
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System.arraycopy(bArr3, i35, bArr8, 0, digestSize);
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while (true) {
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int i36 = i25;
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if (i34 < i26) {
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this.messDigestOTS.update(bArr8, 0, bArr8.length);
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bArr8 = new byte[this.messDigestOTS.getDigestSize()];
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this.messDigestOTS.doFinal(bArr8, 0);
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i34++;
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i25 = i36;
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i28 = i28;
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}
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}
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System.arraycopy(bArr8, 0, bArr6, i35, digestSize);
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j >>>= this.w;
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i30++;
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i32++;
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i27 = i33;
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i9 = 8;
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}
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i27++;
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i9 = 8;
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}
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byte[] bArr9 = bArr8;
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int i37 = digestSize % this.w;
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long j2 = 0;
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for (int i38 = 0; i38 < i37; i38++) {
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j2 ^= (bArr5[i28] & 255) << (i38 << 3);
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i28++;
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}
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byte[] bArr10 = bArr9;
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int i39 = 0;
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while (i39 < (i37 << 3)) {
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int i40 = (int) (j2 & i26);
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i29 += i40;
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int i41 = i30 * digestSize;
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System.arraycopy(bArr3, i41, bArr10, 0, digestSize);
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while (i40 < i26) {
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this.messDigestOTS.update(bArr10, 0, bArr10.length);
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bArr10 = new byte[this.messDigestOTS.getDigestSize()];
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this.messDigestOTS.doFinal(bArr10, 0);
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i40++;
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}
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System.arraycopy(bArr10, 0, bArr6, i41, digestSize);
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int i42 = this.w;
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j2 >>>= i42;
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i30++;
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i39 += i42;
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}
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int i43 = (i6 << this.w) - i29;
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int i44 = 0;
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while (i44 < log) {
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int i45 = i30 * digestSize;
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System.arraycopy(bArr3, i45, bArr10, 0, digestSize);
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for (int i46 = i43 & i26; i46 < i26; i46++) {
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this.messDigestOTS.update(bArr10, 0, bArr10.length);
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bArr10 = new byte[this.messDigestOTS.getDigestSize()];
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this.messDigestOTS.doFinal(bArr10, 0);
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}
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System.arraycopy(bArr10, 0, bArr6, i45, digestSize);
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int i47 = this.w;
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i43 >>>= i47;
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i30++;
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i44 += i47;
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}
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} else if (i7 < 57) {
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int i48 = i4 - i7;
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int i49 = (1 << i7) - 1;
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byte[] bArr11 = new byte[digestSize];
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int i50 = 0;
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int i51 = 0;
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int i52 = 0;
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while (i51 <= i48) {
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int i53 = i51 >>> 3;
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int i54 = this.w + i51;
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int i55 = 0;
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long j3 = 0;
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while (true) {
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i2 = i48;
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if (i53 >= ((i54 + 7) >>> 3)) {
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break;
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}
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j3 ^= (bArr5[i53] & UnsignedBytes.MAX_VALUE) << (i55 << 3);
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i55++;
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i53++;
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log = log;
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i48 = i2;
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i6 = i6;
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}
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int i56 = log;
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int i57 = i6;
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long j4 = i49;
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long j5 = (j3 >>> (i51 % 8)) & j4;
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i50 = (int) (i50 + j5);
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int i58 = i52 * digestSize;
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System.arraycopy(bArr3, i58, bArr11, 0, digestSize);
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while (true) {
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int i59 = i50;
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if (j5 < j4) {
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this.messDigestOTS.update(bArr11, 0, bArr11.length);
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bArr11 = new byte[this.messDigestOTS.getDigestSize()];
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this.messDigestOTS.doFinal(bArr11, 0);
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j5++;
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i50 = i59;
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j4 = j4;
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}
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}
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System.arraycopy(bArr11, 0, bArr6, i58, digestSize);
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i52++;
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i51 = i54;
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log = i56;
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i48 = i2;
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i6 = i57;
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}
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int i60 = log;
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int i61 = i6;
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int i62 = i51 >>> 3;
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if (i62 < digestSize) {
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int i63 = 0;
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long j6 = 0;
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while (i62 < digestSize) {
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j6 ^= (bArr5[i62] & UnsignedBytes.MAX_VALUE) << (i63 << 3);
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i63++;
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i62++;
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}
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long j7 = i49;
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long j8 = (j6 >>> (i51 % 8)) & j7;
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i50 = (int) (i50 + j8);
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int i64 = i52 * digestSize;
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System.arraycopy(bArr3, i64, bArr11, 0, digestSize);
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while (j8 < j7) {
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this.messDigestOTS.update(bArr11, 0, bArr11.length);
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bArr11 = new byte[this.messDigestOTS.getDigestSize()];
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this.messDigestOTS.doFinal(bArr11, 0);
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j8++;
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}
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System.arraycopy(bArr11, 0, bArr6, i64, digestSize);
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i52++;
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}
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int i65 = (i61 << this.w) - i50;
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int i66 = i52;
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int i67 = 0;
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while (i67 < i60) {
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int i68 = i66 * digestSize;
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System.arraycopy(bArr3, i68, bArr11, 0, digestSize);
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for (long j9 = i65 & i49; j9 < i49; j9++) {
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this.messDigestOTS.update(bArr11, 0, bArr11.length);
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bArr11 = new byte[this.messDigestOTS.getDigestSize()];
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this.messDigestOTS.doFinal(bArr11, 0);
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}
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System.arraycopy(bArr11, 0, bArr6, i68, digestSize);
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int i69 = this.w;
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i65 >>>= i69;
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i66++;
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i67 += i69;
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}
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}
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}
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byte[] bArr12 = new byte[digestSize];
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this.messDigestOTS.update(bArr6, 0, i);
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byte[] bArr13 = new byte[this.messDigestOTS.getDigestSize()];
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this.messDigestOTS.doFinal(bArr13, 0);
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return bArr13;
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}
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public WinternitzOTSVerify(Digest digest, int i) {
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this.w = i;
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this.messDigestOTS = digest;
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}
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}
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