115 lines
3.7 KiB
Java
115 lines
3.7 KiB
Java
package org.bouncycastle.util.encoders;
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import com.google.common.primitives.UnsignedBytes;
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import java.io.IOException;
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import java.io.OutputStream;
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import net.sf.scuba.smartcards.ISO7816;
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import net.sf.scuba.smartcards.ISOFileInfo;
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/* loaded from: classes6.dex */
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public class HexEncoder implements Encoder {
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protected final byte[] encodingTable = {ISO7816.INS_DECREASE, 49, ISO7816.INS_INCREASE, 51, ISO7816.INS_DECREASE_STAMPED, 53, 54, 55, 56, 57, 97, ISOFileInfo.FCP_BYTE, 99, ISOFileInfo.FMD_BYTE, 101, 102};
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protected final byte[] decodingTable = new byte[128];
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private static boolean ignore(char c) {
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return c == '\n' || c == '\r' || c == '\t' || c == ' ';
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}
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protected void initialiseDecodingTable() {
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int i = 0;
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int i2 = 0;
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while (true) {
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byte[] bArr = this.decodingTable;
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if (i2 >= bArr.length) {
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break;
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}
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bArr[i2] = -1;
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i2++;
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}
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while (true) {
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byte[] bArr2 = this.encodingTable;
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if (i >= bArr2.length) {
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byte[] bArr3 = this.decodingTable;
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bArr3[65] = bArr3[97];
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bArr3[66] = bArr3[98];
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bArr3[67] = bArr3[99];
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bArr3[68] = bArr3[100];
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bArr3[69] = bArr3[101];
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bArr3[70] = bArr3[102];
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return;
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}
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this.decodingTable[bArr2[i]] = (byte) i;
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i++;
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}
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}
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@Override // org.bouncycastle.util.encoders.Encoder
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public int encode(byte[] bArr, int i, int i2, OutputStream outputStream) throws IOException {
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for (int i3 = i; i3 < i + i2; i3++) {
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byte b = bArr[i3];
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outputStream.write(this.encodingTable[(b & UnsignedBytes.MAX_VALUE) >>> 4]);
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outputStream.write(this.encodingTable[b & 15]);
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}
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return i2 << 1;
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}
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@Override // org.bouncycastle.util.encoders.Encoder
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public int decode(byte[] bArr, int i, int i2, OutputStream outputStream) throws IOException {
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int i3 = i2 + i;
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while (i3 > i && ignore((char) bArr[i3 - 1])) {
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i3--;
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}
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int i4 = 0;
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while (i < i3) {
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while (i < i3 && ignore((char) bArr[i])) {
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i++;
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}
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int i5 = i + 1;
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byte b = this.decodingTable[bArr[i]];
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while (i5 < i3 && ignore((char) bArr[i5])) {
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i5++;
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}
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byte b2 = this.decodingTable[bArr[i5]];
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if ((b | b2) < 0) {
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throw new IOException("invalid characters encountered in Hex data");
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}
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outputStream.write((b << 4) | b2);
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i4++;
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i = i5 + 1;
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}
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return i4;
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}
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@Override // org.bouncycastle.util.encoders.Encoder
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public int decode(String str, OutputStream outputStream) throws IOException {
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int length = str.length();
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while (length > 0 && ignore(str.charAt(length - 1))) {
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length--;
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}
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int i = 0;
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int i2 = 0;
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while (i < length) {
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while (i < length && ignore(str.charAt(i))) {
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i++;
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}
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int i3 = i + 1;
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byte b = this.decodingTable[str.charAt(i)];
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while (i3 < length && ignore(str.charAt(i3))) {
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i3++;
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}
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byte b2 = this.decodingTable[str.charAt(i3)];
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if ((b | b2) < 0) {
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throw new IOException("invalid characters encountered in Hex string");
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}
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outputStream.write((b << 4) | b2);
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i2++;
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i = i3 + 1;
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}
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return i2;
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}
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public HexEncoder() {
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initialiseDecodingTable();
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}
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}
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