mirror of
https://github.com/Geprivilegieerde-Anonimiteit-BV/XACrypto.git
synced 2026-08-21 13:36:21 -04:00
Java mirror fix (#20)
* Update ARIAGCM.java removed reflection-only exceptions * desc bulk remove reflection-only * Update Factories.java more removal! * desc camellia - add block cipher implements + encryptBlock XACryptoException twofish- add implement for blockcipher * lot stuff + cleanup
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@@ -3,26 +3,20 @@ import de.caydenno1.xacrypto.misc.ToM;
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import de.caydenno1.xacrypto.misc.XACryptoException;
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import de.caydenno1.xacrypto.misc.isNull;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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import java.util.Arrays;
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import java.util.Objects;
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public class GCM {
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private final Object cip;
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private final BlockCipher cip;
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private final GHASH gh;
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private final Method encryptor;
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public GCM(Object cip) throws XACryptoException, NoSuchMethodException, InvocationTargetException, IllegalAccessException {
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public GCM(BlockCipher cip) throws XACryptoException {
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this.cip = cip;
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this.encryptor = cip.getClass().getMethod("encryptBlock", byte[].class);
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byte[] H = (byte[]) this.encryptor.invoke(cip, (Object) new byte[16]);
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byte[] H = cip.encryptBlock(new byte[16]);
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this.gh = new GHASH(H);
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}
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public Result encrypt(byte[] pln, byte[] aad, byte[] iv) throws XACryptoException, InvocationTargetException, IllegalAccessException {
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public Result encrypt(byte[] pln, byte[] aad, byte[] iv) throws XACryptoException {
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if (iv.length <= 0) throw new XACryptoException("iv does not have data or is corrupted :[");
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if (pln == null) pln = new byte[0];
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if (aad == null) aad = new byte[0];
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@@ -38,23 +32,23 @@ public class GCM {
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return new Result(packaged,tag);
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}
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public byte[] decrypt(Result res, byte[] aad) throws XACryptoException, InvocationTargetException, IllegalAccessException {
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public byte[] decrypt(Result res, byte[] aad) throws XACryptoException {
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return dec(res, aad, 12, false);
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}
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public byte[] decrypt(Result res, byte[] aad, String optflag) throws XACryptoException, InvocationTargetException, IllegalAccessException {
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public byte[] decrypt(Result res, byte[] aad, String optflag) throws XACryptoException {
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return dec(res, aad, 12, Objects.equals(optflag, "-override"));
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}
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public byte[] decrypt(Result res, byte[] aad, int ivLen) throws XACryptoException, InvocationTargetException, IllegalAccessException {
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public byte[] decrypt(Result res, byte[] aad, int ivLen) throws XACryptoException {
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return dec(res, aad, ivLen, false);
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}
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public byte[] decrypt(Result res, byte[] aad, int ivLen, String optflag) throws XACryptoException, InvocationTargetException, IllegalAccessException {
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public byte[] decrypt(Result res, byte[] aad, int ivLen, String optflag) throws XACryptoException {
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return dec(res, aad, ivLen, Objects.equals(optflag, "-override"));
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}
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private byte[] dec(Result res, byte[] aad, int ivLen, boolean override) throws XACryptoException, InvocationTargetException, IllegalAccessException {
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private byte[] dec(Result res, byte[] aad, int ivLen, boolean override) throws XACryptoException {
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if (res.cip().length < 12) throw new XACryptoException("ciptext min len is 12 char");
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if (isNull.isNull(aad)) aad = new byte[0];
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@@ -86,17 +80,17 @@ public class GCM {
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}
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}
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private byte[] tag(byte[] aad, byte[] ct, byte[] J0) throws InvocationTargetException, IllegalAccessException {
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private byte[] tag(byte[] aad, byte[] ct, byte[] J0) throws XACryptoException {
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byte[] S = gh.compute(aad, ct);
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byte[] EJ0 = (byte[]) this.encryptor.invoke(J0);
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byte[] EJ0 = cip.encryptBlock(J0);
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for (int i = 0; i < 16; i++) S[i] ^= EJ0[i];
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return S;
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}
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private byte[] gctr(byte[] icb, byte[] in) throws InvocationTargetException, IllegalAccessException {
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private byte[] gctr(byte[] icb, byte[] in) throws XACryptoException {
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byte[] o = new byte[in.length];
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byte[] cnt = Arrays.copyOf(icb, 16);
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for (int i = 0 ; i < in.length ; i += 16){
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byte[] ks = (byte[]) this.encryptor.invoke(cnt);
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byte[] ks = cip.encryptBlock(cnt);
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int len = Math.min(16, in.length -i);
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for (int j = 0; j < len; j++) o[i + j] = (byte)(in[i + j] ^ ks[j]);
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if (i+16<in.length) cnt = inc32(cnt);
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