261 lines
9.3 KiB
Java
261 lines
9.3 KiB
Java
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package org.bouncycastle.crypto.digests;
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import com.google.common.base.Ascii;
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import com.google.common.primitives.UnsignedBytes;
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import org.bouncycastle.pqc.jcajce.spec.McElieceCCA2KeyGenParameterSpec;
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import org.bouncycastle.util.Memoable;
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import org.bouncycastle.util.Pack;
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/* loaded from: classes6.dex */
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public class SHA224Digest extends GeneralDigest implements EncodableDigest {
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private static final int DIGEST_LENGTH = 28;
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static final int[] K = {1116352408, 1899447441, -1245643825, -373957723, 961987163, 1508970993, -1841331548, -1424204075, -670586216, 310598401, 607225278, 1426881987, 1925078388, -2132889090, -1680079193, -1046744716, -459576895, -272742522, 264347078, 604807628, 770255983, 1249150122, 1555081692, 1996064986, -1740746414, -1473132947, -1341970488, -1084653625, -958395405, -710438585, 113926993, 338241895, 666307205, 773529912, 1294757372, 1396182291, 1695183700, 1986661051, -2117940946, -1838011259, -1564481375, -1474664885, -1035236496, -949202525, -778901479, -694614492, -200395387, 275423344, 430227734, 506948616, 659060556, 883997877, 958139571, 1322822218, 1537002063, 1747873779, 1955562222, 2024104815, -2067236844, -1933114872, -1866530822, -1538233109, -1090935817, -965641998};
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private int H1;
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private int H2;
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private int H3;
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private int H4;
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private int H5;
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private int H6;
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private int H7;
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private int H8;
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private int[] X;
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private int xOff;
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private int Ch(int i, int i2, int i3) {
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return (i & i2) ^ (i3 & (~i));
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}
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private int Maj(int i, int i2, int i3) {
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return ((i & i2) ^ (i & i3)) ^ (i2 & i3);
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}
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private int Sum0(int i) {
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return (((i << 19) | (i >>> 13)) ^ ((i >>> 2) | (i << 30))) ^ ((i << 10) | (i >>> 22));
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}
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private int Sum1(int i) {
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return (((i << 21) | (i >>> 11)) ^ ((i >>> 6) | (i << 26))) ^ ((i << 7) | (i >>> 25));
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}
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private int Theta0(int i) {
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return (((i << 14) | (i >>> 18)) ^ ((i >>> 7) | (i << 25))) ^ (i >>> 3);
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}
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private int Theta1(int i) {
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return (((i << 13) | (i >>> 19)) ^ ((i >>> 17) | (i << 15))) ^ (i >>> 10);
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}
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@Override // org.bouncycastle.crypto.Digest
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public int getDigestSize() {
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return 28;
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}
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@Override // org.bouncycastle.util.Memoable
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public void reset(Memoable memoable) {
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doCopy((SHA224Digest) memoable);
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}
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@Override // org.bouncycastle.crypto.digests.GeneralDigest, org.bouncycastle.crypto.Digest
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public void reset() {
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super.reset();
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this.H1 = -1056596264;
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this.H2 = 914150663;
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this.H3 = 812702999;
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this.H4 = -150054599;
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this.H5 = -4191439;
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this.H6 = 1750603025;
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this.H7 = 1694076839;
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this.H8 = -1090891868;
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this.xOff = 0;
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int i = 0;
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while (true) {
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int[] iArr = this.X;
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if (i == iArr.length) {
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return;
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}
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iArr[i] = 0;
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i++;
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}
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}
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@Override // org.bouncycastle.crypto.digests.GeneralDigest
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protected void processWord(byte[] bArr, int i) {
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byte b = bArr[i];
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byte b2 = bArr[i + 1];
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byte b3 = bArr[i + 2];
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byte b4 = bArr[i + 3];
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int[] iArr = this.X;
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int i2 = this.xOff;
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iArr[i2] = (b4 & UnsignedBytes.MAX_VALUE) | (b << Ascii.CAN) | ((b2 & UnsignedBytes.MAX_VALUE) << 16) | ((b3 & UnsignedBytes.MAX_VALUE) << 8);
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int i3 = i2 + 1;
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this.xOff = i3;
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if (i3 == 16) {
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processBlock();
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}
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}
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@Override // org.bouncycastle.crypto.digests.GeneralDigest
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protected void processLength(long j) {
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if (this.xOff > 14) {
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processBlock();
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}
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int[] iArr = this.X;
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iArr[14] = (int) (j >>> 32);
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iArr[15] = (int) j;
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}
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@Override // org.bouncycastle.crypto.digests.GeneralDigest
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protected void processBlock() {
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for (int i = 16; i <= 63; i++) {
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int[] iArr = this.X;
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int Theta1 = Theta1(iArr[i - 2]);
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int[] iArr2 = this.X;
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iArr[i] = Theta1 + iArr2[i - 7] + Theta0(iArr2[i - 15]) + this.X[i - 16];
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}
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int i2 = this.H1;
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int i3 = this.H2;
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int i4 = this.H3;
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int i5 = this.H4;
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int i6 = this.H5;
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int i7 = this.H6;
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int i8 = this.H7;
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int i9 = this.H8;
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int i10 = 0;
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for (int i11 = 0; i11 < 8; i11++) {
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int Sum1 = Sum1(i6);
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int Ch = Ch(i6, i7, i8);
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int[] iArr3 = K;
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int i12 = i9 + Sum1 + Ch + iArr3[i10] + this.X[i10];
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int i13 = i5 + i12;
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int Sum0 = i12 + Sum0(i2) + Maj(i2, i3, i4);
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int i14 = i10 + 1;
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int Sum12 = i8 + Sum1(i13) + Ch(i13, i6, i7) + iArr3[i14] + this.X[i14];
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int i15 = i4 + Sum12;
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int Sum02 = Sum12 + Sum0(Sum0) + Maj(Sum0, i2, i3);
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int i16 = i10 + 2;
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int Sum13 = i7 + Sum1(i15) + Ch(i15, i13, i6) + iArr3[i16] + this.X[i16];
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int i17 = i3 + Sum13;
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int Sum03 = Sum13 + Sum0(Sum02) + Maj(Sum02, Sum0, i2);
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int i18 = i10 + 3;
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int Sum14 = i6 + Sum1(i17) + Ch(i17, i15, i13) + iArr3[i18] + this.X[i18];
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int i19 = i2 + Sum14;
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int Sum04 = Sum14 + Sum0(Sum03) + Maj(Sum03, Sum02, Sum0);
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int i20 = i10 + 4;
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int Sum15 = i13 + Sum1(i19) + Ch(i19, i17, i15) + iArr3[i20] + this.X[i20];
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i9 = Sum0 + Sum15;
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i5 = Sum15 + Sum0(Sum04) + Maj(Sum04, Sum03, Sum02);
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int i21 = i10 + 5;
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int Sum16 = i15 + Sum1(i9) + Ch(i9, i19, i17) + iArr3[i21] + this.X[i21];
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i8 = Sum02 + Sum16;
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i4 = Sum16 + Sum0(i5) + Maj(i5, Sum04, Sum03);
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int i22 = i10 + 6;
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int Sum17 = i17 + Sum1(i8) + Ch(i8, i9, i19) + iArr3[i22] + this.X[i22];
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i7 = Sum03 + Sum17;
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i3 = Sum17 + Sum0(i4) + Maj(i4, i5, Sum04);
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int i23 = i10 + 7;
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int Sum18 = i19 + Sum1(i7) + Ch(i7, i8, i9) + iArr3[i23] + this.X[i23];
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i6 = Sum04 + Sum18;
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i2 = Sum18 + Sum0(i3) + Maj(i3, i4, i5);
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i10 += 8;
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}
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this.H1 += i2;
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this.H2 += i3;
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this.H3 += i4;
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this.H4 += i5;
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this.H5 += i6;
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this.H6 += i7;
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this.H7 += i8;
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this.H8 += i9;
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this.xOff = 0;
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for (int i24 = 0; i24 < 16; i24++) {
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this.X[i24] = 0;
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}
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}
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@Override // org.bouncycastle.crypto.digests.EncodableDigest
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public byte[] getEncodedState() {
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byte[] bArr = new byte[(this.xOff << 2) + 52];
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super.populateState(bArr);
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Pack.intToBigEndian(this.H1, bArr, 16);
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Pack.intToBigEndian(this.H2, bArr, 20);
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Pack.intToBigEndian(this.H3, bArr, 24);
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Pack.intToBigEndian(this.H4, bArr, 28);
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Pack.intToBigEndian(this.H5, bArr, 32);
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Pack.intToBigEndian(this.H6, bArr, 36);
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Pack.intToBigEndian(this.H7, bArr, 40);
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Pack.intToBigEndian(this.H8, bArr, 44);
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Pack.intToBigEndian(this.xOff, bArr, 48);
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for (int i = 0; i != this.xOff; i++) {
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Pack.intToBigEndian(this.X[i], bArr, (i << 2) + 52);
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}
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return bArr;
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}
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@Override // org.bouncycastle.crypto.Digest
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public String getAlgorithmName() {
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return McElieceCCA2KeyGenParameterSpec.SHA224;
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}
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@Override // org.bouncycastle.crypto.Digest
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public int doFinal(byte[] bArr, int i) {
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finish();
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Pack.intToBigEndian(this.H1, bArr, i);
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Pack.intToBigEndian(this.H2, bArr, i + 4);
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Pack.intToBigEndian(this.H3, bArr, i + 8);
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Pack.intToBigEndian(this.H4, bArr, i + 12);
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Pack.intToBigEndian(this.H5, bArr, i + 16);
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Pack.intToBigEndian(this.H6, bArr, i + 20);
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Pack.intToBigEndian(this.H7, bArr, i + 24);
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reset();
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return 28;
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}
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@Override // org.bouncycastle.util.Memoable
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public Memoable copy() {
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return new SHA224Digest(this);
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}
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private void doCopy(SHA224Digest sHA224Digest) {
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super.copyIn(sHA224Digest);
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this.H1 = sHA224Digest.H1;
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this.H2 = sHA224Digest.H2;
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this.H3 = sHA224Digest.H3;
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this.H4 = sHA224Digest.H4;
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this.H5 = sHA224Digest.H5;
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this.H6 = sHA224Digest.H6;
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this.H7 = sHA224Digest.H7;
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this.H8 = sHA224Digest.H8;
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int[] iArr = sHA224Digest.X;
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System.arraycopy(iArr, 0, this.X, 0, iArr.length);
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this.xOff = sHA224Digest.xOff;
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}
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public SHA224Digest(byte[] bArr) {
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super(bArr);
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this.X = new int[64];
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this.H1 = Pack.bigEndianToInt(bArr, 16);
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this.H2 = Pack.bigEndianToInt(bArr, 20);
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this.H3 = Pack.bigEndianToInt(bArr, 24);
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this.H4 = Pack.bigEndianToInt(bArr, 28);
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this.H5 = Pack.bigEndianToInt(bArr, 32);
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this.H6 = Pack.bigEndianToInt(bArr, 36);
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this.H7 = Pack.bigEndianToInt(bArr, 40);
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this.H8 = Pack.bigEndianToInt(bArr, 44);
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this.xOff = Pack.bigEndianToInt(bArr, 48);
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for (int i = 0; i != this.xOff; i++) {
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this.X[i] = Pack.bigEndianToInt(bArr, (i << 2) + 52);
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}
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}
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public SHA224Digest(SHA224Digest sHA224Digest) {
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super(sHA224Digest);
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this.X = new int[64];
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doCopy(sHA224Digest);
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}
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public SHA224Digest() {
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this.X = new int[64];
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reset();
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}
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}
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