zcy_dev 将单文件ZUC256拆分为多文件，并封装init update final 方法 #1
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package com.zuc.zuc256;
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import static com.zuc.zuc256.Zuc256Util.L1;
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import static com.zuc.zuc256.Zuc256Util.L2;
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import static com.zuc.zuc256.Zuc256Util.add31;
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import static com.zuc.zuc256.Zuc256Util.makeU31;
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import static com.zuc.zuc256.Zuc256Util.makeU32;
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import static com.zuc.zuc256.Zuc256Util.rot31;
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/**
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* ZUC-256 核心：状态初始化、密钥字生成、密钥流生成。
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* 仅保留对外 API 与内部步骤骨架，细节待填。
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*/
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public final class Zuc256Core {
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private Zuc256Core() {}
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/** 初始化状态（Key + IV） */
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public static void init(Zuc256State st, byte[] key32, byte[] ivN) {
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// TODO: 1) 按表和 key/iv 装载 LFSR 初值
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// TODO: 2) 置 R1/R2
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// TODO: 3) 预运行若干轮
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throw new UnsupportedOperationException("TODO: init");
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public static void initState(Zuc256State state, byte[] key32, byte[] iv) {
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zuc256SetMacKey(state, key32, iv, 0);
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}
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/** 生成单个 32bit 密钥字 */
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public static int generateKeyword(Zuc256State st) {
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// TODO: 1) BitReconstruction
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// TODO: 2) 非线性变换 F -> W
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// TODO: 3) LFSR 下一步（with/without carry 按标准）
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// TODO: 4) 输出 W ⊕ X(??)（依实现）
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throw new UnsupportedOperationException("TODO: generateKeyword");
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/** 生成单个密钥字 */
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public static int generateKeyword(Zuc256State state) {
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int[] LFSR = state.LFSR;
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int R1 = state.R1;
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int R2 = state.R2;
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int X0, X1, X2, X3;
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int W1, W2, U, V;
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int Z;
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// BitReconstruction4
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X0 = ((LFSR[15] & 0x7FFF8000) << 1) | (LFSR[14] & 0xFFFF);
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X1 = ((LFSR[11] & 0xFFFF) << 16) | (LFSR[9] >>> 15);
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X2 = ((LFSR[7] & 0xFFFF) << 16) | (LFSR[5] >>> 15);
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X3 = ((LFSR[2] & 0xFFFF) << 16) | (LFSR[0] >>> 15);
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Z = X3 ^ ((X0 ^ R1) + R2);
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// F_(X1, X2)
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W1 = R1 + X1;
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W2 = R2 ^ X2;
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U = L1((W1 << 16) | (W2 >>> 16));
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V = L2((W2 << 16) | (W1 >>> 16));
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R1 = makeU32(Zuc256Tables.S0[(U >>> 24) & 0xFF],
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Zuc256Tables.S1[(U >>> 16) & 0xFF],
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Zuc256Tables.S0[(U >>> 8) & 0xFF],
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Zuc256Tables.S1[U & 0xFF]);
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R2 = makeU32(Zuc256Tables.S0[(V >>> 24) & 0xFF],
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Zuc256Tables.S1[(V >>> 16) & 0xFF],
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Zuc256Tables.S0[(V >>> 8) & 0xFF],
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Zuc256Tables.S1[V & 0xFF]);
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// LFSRWithWorkMode
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long a = LFSR[0];
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a += (long)LFSR[0] << 8;
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a += (long)LFSR[4] << 20;
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a += (long)LFSR[10] << 21;
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a += (long)LFSR[13] << 17;
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a += (long)LFSR[15] << 15;
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a = (a & 0x7FFFFFFF) + (a >>> 31);
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int v = (int) ((a & 0x7FFFFFFF) + (a >>> 31));
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System.arraycopy(LFSR, 1, LFSR, 0, 15);
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LFSR[15] = v;
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state.R1 = R1;
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state.R2 = R2;
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return Z;
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}
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/** 生成 nwords 个 32bit 密钥字到 ks[] */
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public static void generateKeystream(Zuc256State st, int nwords, int[] ks) {
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// 生成指定长度的密钥流
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public static void zuc256GenerateKeystream(Zuc256State state, int nwords, int[] keystream) {
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int[] LFSR = state.LFSR;
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int R1 = state.R1;
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int R2 = state.R2;
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int X0, X1, X2, X3;
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int W1, W2, U, V;
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for (int i = 0; i < nwords; i++) {
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ks[i] = generateKeyword(st); // TODO: 替换为高效批量实现（可选）
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// BitReconstruction4
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X0 = ((LFSR[15] & 0x7FFF8000) << 1) | (LFSR[14] & 0xFFFF);
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X1 = ((LFSR[11] & 0xFFFF) << 16) | (LFSR[9] >>> 15);
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X2 = ((LFSR[7] & 0xFFFF) << 16) | (LFSR[5] >>> 15);
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X3 = ((LFSR[2] & 0xFFFF) << 16) | (LFSR[0] >>> 15);
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keystream[i] = X3 ^ ((X0 ^ R1) + R2);
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// F_(X1, X2)
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W1 = R1 + X1;
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W2 = R2 ^ X2;
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U = L1((W1 << 16) | (W2 >>> 16));
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V = L2((W2 << 16) | (W1 >>> 16));
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// S盒查找
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int T0 = Zuc256Tables.S0[(U >>> 24) & 0xFF] & 0xFF;
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int T2 = Zuc256Tables.S0[(U >>> 8) & 0xFF] & 0xFF;
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int T4 = Zuc256Tables.S0[(V >>> 24) & 0xFF] & 0xFF;
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int T6 = Zuc256Tables.S0[(V >>> 8) & 0xFF] & 0xFF;
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int T1 = Zuc256Tables.S1[(U >>> 16) & 0xFF] & 0xFF;
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int T3 = Zuc256Tables.S1[U & 0xFF] & 0xFF;
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int T5 = Zuc256Tables.S1[(V >>> 16) & 0xFF] & 0xFF;
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int T7 = Zuc256Tables.S1[V & 0xFF] & 0xFF;
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R1 = makeU32(T0, T1, T2, T3);
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R2 = makeU32(T4, T5, T6, T7);
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// LFSRWithWorkMode
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long a = LFSR[0];
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a += (long)LFSR[0] << 8;
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a += (long)LFSR[4] << 20;
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a += (long)LFSR[10] << 21;
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a += (long)LFSR[13] << 17;
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a += (long)LFSR[15] << 15;
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a = (a & 0x7FFFFFFF) + (a >>> 31);
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int v = (int) ((a & 0x7FFFFFFF) + (a >>> 31));
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System.arraycopy(LFSR, 1, LFSR, 0, 15);
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LFSR[15] = v;
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}
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state.R1 = R1;
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state.R2 = R2;
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}
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// 生成单个密钥字
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public static int zuc256GenerateKeyword(Zuc256State state) {
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int[] LFSR = state.LFSR;
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int R1 = state.R1;
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int R2 = state.R2;
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int X0, X1, X2, X3;
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int W1, W2, U, V;
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int Z;
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// BitReconstruction4
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X0 = ((LFSR[15] & 0x7FFF8000) << 1) | (LFSR[14] & 0xFFFF);
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X1 = ((LFSR[11] & 0xFFFF) << 16) | (LFSR[9] >>> 15);
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X2 = ((LFSR[7] & 0xFFFF) << 16) | (LFSR[5] >>> 15);
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X3 = ((LFSR[2] & 0xFFFF) << 16) | (LFSR[0] >>> 15);
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Z = X3 ^ ((X0 ^ R1) + R2);
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// F_(X1, X2)
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W1 = R1 + X1;
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W2 = R2 ^ X2;
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U = L1((W1 << 16) | (W2 >>> 16));
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V = L2((W2 << 16) | (W1 >>> 16));
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R1 = makeU32(Zuc256Tables.S0[(U >>> 24) & 0xFF],
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Zuc256Tables.S1[(U >>> 16) & 0xFF],
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Zuc256Tables.S0[(U >>> 8) & 0xFF],
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Zuc256Tables.S1[U & 0xFF]);
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R2 = makeU32(Zuc256Tables.S0[(V >>> 24) & 0xFF],
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Zuc256Tables.S1[(V >>> 16) & 0xFF],
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Zuc256Tables.S0[(V >>> 8) & 0xFF],
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Zuc256Tables.S1[V & 0xFF]);
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// LFSRWithWorkMode
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long a = LFSR[0];
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a += (long)LFSR[0] << 8;
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a += (long)LFSR[4] << 20;
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a += (long)LFSR[10] << 21;
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a += (long)LFSR[13] << 17;
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a += (long)LFSR[15] << 15;
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a = (a & 0x7FFFFFFF) + (a >>> 31);
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int v = (int) ((a & 0x7FFFFFFF) + (a >>> 31));
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System.arraycopy(LFSR, 1, LFSR, 0, 15);
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LFSR[15] = v;
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state.R1 = R1;
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state.R2 = R2;
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return Z;
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}
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// 初始化MAC密钥
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private static void zuc256SetMacKey(Zuc256State key, byte[] K, byte[] IV, int macbits) {
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int[] LFSR = key.LFSR;
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int R1 = 0;
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int R2 = 0;
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int X0, X1, X2;
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int W, W1, W2, U, V;
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int[] D;
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int IV17 = (IV[17] & 0xFF) >> 2;
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int IV18 = ((IV[17] & 0x03) << 4) | ((IV[18] & 0xFF) >> 4);
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int IV19 = ((IV[18] & 0x0F) << 2) | ((IV[19] & 0xFF) >> 6);
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int IV20 = IV[19] & 0x3F;
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int IV21 = (IV[20] & 0xFF) >> 2;
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int IV22 = ((IV[20] & 0x03) << 4) | ((IV[21] & 0xFF) >> 4);
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int IV23 = ((IV[21] & 0x0F) << 2) | ((IV[22] & 0xFF) >> 6);
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int IV24 = IV[22] & 0x3F;
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D = (macbits / 32 < 3) ? Zuc256Tables.ZUC256_D[macbits / 32] : Zuc256Tables.ZUC256_D[3];
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LFSR[0] = makeU31(K[0] & 0xFF, D[0], K[21] & 0xFF, K[16] & 0xFF);
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LFSR[1] = makeU31(K[1] & 0xFF, D[1], K[22] & 0xFF, K[17] & 0xFF);
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LFSR[2] = makeU31(K[2] & 0xFF, D[2], K[23] & 0xFF, K[18] & 0xFF);
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LFSR[3] = makeU31(K[3] & 0xFF, D[3], K[24] & 0xFF, K[19] & 0xFF);
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LFSR[4] = makeU31(K[4] & 0xFF, D[4], K[25] & 0xFF, K[20] & 0xFF);
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LFSR[5] = makeU31(IV[0] & 0xFF, (D[5] | IV17), K[5] & 0xFF, K[26] & 0xFF);
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LFSR[6] = makeU31(IV[1] & 0xFF, (D[6] | IV18), K[6] & 0xFF, K[27] & 0xFF);
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LFSR[7] = makeU31(IV[10] & 0xFF, (D[7] | IV19), K[7] & 0xFF, IV[2] & 0xFF);
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LFSR[8] = makeU31(K[8] & 0xFF, (D[8] | IV20), IV[3] & 0xFF, IV[11] & 0xFF);
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LFSR[9] = makeU31(K[9] & 0xFF, (D[9] | IV21), IV[12] & 0xFF, IV[4] & 0xFF);
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LFSR[10] = makeU31(IV[5] & 0xFF, (D[10] | IV22), K[10] & 0xFF, K[28] & 0xFF);
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LFSR[11] = makeU31(K[11] & 0xFF, (D[11] | IV23), IV[6] & 0xFF, IV[13] & 0xFF);
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LFSR[12] = makeU31(K[12] & 0xFF, (D[12] | IV24), IV[7] & 0xFF, IV[14] & 0xFF);
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LFSR[13] = makeU31(K[13] & 0xFF, D[13], IV[15] & 0xFF, IV[8] & 0xFF);
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LFSR[14] = makeU31(K[14] & 0xFF, (D[14] | (K[31] >>> 4)), IV[16] & 0xFF, IV[9] & 0xFF);
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LFSR[15] = makeU31(K[15] & 0xFF, (D[15] | (K[31] & 0x0F)), K[30] & 0xFF, K[29] & 0xFF);
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for (int i = 0; i < 32; i++) {
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// BitReconstruction3
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X0 = ((LFSR[15] & 0x7FFF8000) << 1) | (LFSR[14] & 0xFFFF);
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X1 = ((LFSR[11] & 0xFFFF) << 16) | (LFSR[9] >>> 15);
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X2 = ((LFSR[7] & 0xFFFF) << 16) | (LFSR[5] >>> 15);
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// F(X0, X1, X2)
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W = (X0 ^ R1) + R2;
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W1 = R1 + X1;
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W2 = R2 ^ X2;
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U = L1((W1 << 16) | (W2 >>> 16));
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V = L2((W2 << 16) | (W1 >>> 16));
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R1 = makeU32(Zuc256Tables.S0[(U >>> 24) & 0xFF],
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Zuc256Tables.S1[(U >>> 16) & 0xFF],
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Zuc256Tables.S0[(U >>> 8) & 0xFF],
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Zuc256Tables.S1[U & 0xFF]);
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R2 = makeU32(Zuc256Tables.S0[(V >>> 24) & 0xFF],
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Zuc256Tables.S1[(V >>> 16) & 0xFF],
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Zuc256Tables.S0[(V >>> 8) & 0xFF],
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Zuc256Tables.S1[V & 0xFF]);
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// LFSRWithInitialisationMode(W >> 1)
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int v = LFSR[0];
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v = add31(v, rot31(LFSR[0], 8));
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v = add31(v, rot31(LFSR[4], 20));
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v = add31(v, rot31(LFSR[10], 21));
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v = add31(v, rot31(LFSR[13], 17));
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v = add31(v, rot31(LFSR[15], 15));
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v = add31(v, W >>> 1);
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System.arraycopy(LFSR, 1, LFSR, 0, 15);
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LFSR[15] = v;
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}
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// BitReconstruction2
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X1 = ((LFSR[11] & 0xFFFF) << 16) | (LFSR[9] >>> 15);
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X2 = ((LFSR[7] & 0xFFFF) << 16) | (LFSR[5] >>> 15);
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// F_(X1, X2)
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W1 = R1 + X1;
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W2 = R2 ^ X2;
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U = L1((W1 << 16) | (W2 >>> 16));
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V = L2((W2 << 16) | (W1 >>> 16));
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R1 = makeU32(Zuc256Tables.S0[(U >>> 24) & 0xFF],
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Zuc256Tables.S1[(U >>> 16) & 0xFF],
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Zuc256Tables.S0[(U >>> 8) & 0xFF],
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Zuc256Tables.S1[U & 0xFF]);
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R2 = makeU32(Zuc256Tables.S0[(V >>> 24) & 0xFF],
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Zuc256Tables.S1[(V >>> 16) & 0xFF],
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Zuc256Tables.S0[(V >>> 8) & 0xFF],
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Zuc256Tables.S1[V & 0xFF]);
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// LFSRWithWorkMode
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long a = LFSR[0];
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a += (long)LFSR[0] << 8;
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a += (long)LFSR[4] << 20;
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a += (long)LFSR[10] << 21;
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a += (long)LFSR[13] << 17;
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a += (long)LFSR[15] << 15;
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a = (a & 0x7FFFFFFF) + (a >>> 31);
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int v = (int) ((a & 0x7FFFFFFF) + (a >>> 31));
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System.arraycopy(LFSR, 1, LFSR, 0, 15);
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LFSR[15] = v;
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key.R1 = R1;
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key.R2 = R2;
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}
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}
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@@ -1,51 +1,75 @@
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package com.zuc.zuc256;
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import java.nio.charset.StandardCharsets;
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import java.util.Arrays;
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import static com.zuc.zuc256.Zuc256Util.extractIv;
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import static com.zuc.zuc256.Zuc256Util.printHex;
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// 一次性加密函数
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/**
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* 演示主函数：保持与你的单文件示例一致的调用路径。
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* 说明：核心函数仍未实现，运行会抛出 UnsupportedOperationException。
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*/
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public final class Zuc256Demo {
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public static void main(String[] args) {
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// 1. 明文
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byte[] plaintext = "ZUC256对称加解密测试:1234567890".getBytes(StandardCharsets.UTF_8);
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System.out.println("明文: " + new String(plaintext, StandardCharsets.UTF_8));
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Zuc256Util.printHex("明文(十六进制)", plaintext, plaintext.length);
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byte[] plaintext = "ZUC256对称加解密测试:1234567890".getBytes();
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int plaintextLen = plaintext.length;
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System.out.println("明文: " + new String(plaintext));
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printHex("明文(十六进制)", plaintext, plaintextLen);
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// 2. 密钥(32字节ASCII)
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byte[] key = "0123456789abcdef0123456789abcdef".getBytes(StandardCharsets.US_ASCII);
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Zuc256Util.printHex("密钥", key, key.length);
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byte[] key = "0123456789abcdef0123456789abcdef".getBytes();
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printHex("密钥", key, 32);
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// 3. 初始向量(25字节ASCII) -> 提取 23 字节
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byte[] inputIv25Byte = "0123456789abcdefg01234567".getBytes(StandardCharsets.US_ASCII);
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// 3. 初始向量(25字节ASCII)
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byte[] inputIv25Byte = "0123456789abcdefg01234567".getBytes();
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byte[] iv = new byte[23];
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// TODO: 按你的 C 规则提取
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// Zuc256Util.extractIv(inputIv25Byte, iv);
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Zuc256Util.printHex("提取后的IV(占位)", iv, iv.length);
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extractIv(inputIv25Byte, iv);
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printHex("提取后的IV", iv, 23);
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// 4. 加密/解密缓冲区
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byte[] ciphertext = new byte[plaintext.length];
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byte[] decrypted = new byte[plaintext.length];
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// 4. 分配加密/解密缓冲区
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byte[] ciphertext = new byte[plaintextLen];
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byte[] decryptedtext = new byte[plaintextLen];
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// 5. 加密
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Zuc256EncryptCtx enc = new Zuc256EncryptCtx();
|
||||
enc.init(key, iv);
|
||||
enc.update(plaintext, 0, plaintext.length, ciphertext, 0);
|
||||
Zuc256Util.printHex("密文", ciphertext, ciphertext.length);
|
||||
Zuc256State stateEnc = new Zuc256State();
|
||||
Zuc256Core.initState(stateEnc, key, iv);
|
||||
zuc256Crypt(stateEnc, plaintext, plaintextLen, ciphertext);
|
||||
printHex("密文", ciphertext, plaintextLen);
|
||||
|
||||
// 6. 解密（重新初始化）
|
||||
Zuc256EncryptCtx dec = new Zuc256EncryptCtx();
|
||||
dec.init(key, iv);
|
||||
dec.update(ciphertext, 0, ciphertext.length, decrypted, 0);
|
||||
Zuc256Util.printHex("解密后", decrypted, decrypted.length);
|
||||
System.out.println("解密文本: " + new String(decrypted, StandardCharsets.UTF_8));
|
||||
// 6. 解密(重新初始化状态)
|
||||
Zuc256State stateDec = new Zuc256State();
|
||||
Zuc256Core.initState(stateDec, key, iv);
|
||||
zuc256Crypt(stateDec, ciphertext, plaintextLen, decryptedtext);
|
||||
printHex("解密后", decryptedtext, plaintextLen);
|
||||
System.out.println("解密文本: " + new String(decryptedtext));
|
||||
|
||||
// 7. 验证
|
||||
System.out.println(Arrays.equals(plaintext, decrypted)
|
||||
? "=== 测试成功: 解密结果与明文一致 ==="
|
||||
: "=== 测试失败: 解密结果与明文不一致 ===");
|
||||
// 7. 验证结果
|
||||
if (Arrays.equals(plaintext, decryptedtext)) {
|
||||
System.out.println("=== 测试成功: 解密结果与明文一致 ===");
|
||||
} else {
|
||||
System.out.println("=== 测试失败: 解密结果与明文不一致 ===");
|
||||
}
|
||||
}
|
||||
|
||||
// 一次性加密
|
||||
public static void zuc256Crypt(Zuc256State state, byte[] in, int inlen, byte[] out) {
|
||||
if (state == null || in == null || out == null) return;
|
||||
|
||||
Zuc256EncryptCtx ctx = new Zuc256EncryptCtx(state);
|
||||
|
||||
// 执行加解密
|
||||
ctx.update(in, inlen, out);
|
||||
int remainingOffset = (inlen / 4) * 4;
|
||||
byte[] finishOut = new byte[out.length - remainingOffset];
|
||||
if (finishOut.length > 0) {
|
||||
System.arraycopy(out, remainingOffset, finishOut, 0, finishOut.length);
|
||||
}
|
||||
ctx.finish(finishOut);
|
||||
System.arraycopy(finishOut, 0, out, remainingOffset, finishOut.length);
|
||||
}
|
||||
}
|
||||
|
||||
@@ -2,41 +2,124 @@ package com.zuc.zuc256;
|
||||
|
||||
import java.util.Arrays;
|
||||
|
||||
import static com.zuc.zuc256.Zuc256Core.zuc256GenerateKeystream;
|
||||
import static com.zuc.zuc256.Zuc256Core.zuc256GenerateKeyword;
|
||||
import static com.zuc.zuc256.Zuc256Util.getU32;
|
||||
import static com.zuc.zuc256.Zuc256Util.putU32;
|
||||
|
||||
|
||||
/**
|
||||
* 分段加/解密上下文（流密码：同一流程）。
|
||||
* 注意：JavaCard 上尽量复用缓冲，避免额外分配。
|
||||
*/
|
||||
public final class Zuc256EncryptCtx {
|
||||
private final Zuc256State st = new Zuc256State();
|
||||
Zuc256State state = new Zuc256State();
|
||||
byte[] buf = new byte[4];
|
||||
int buflen;
|
||||
|
||||
// 流水寄存（可选）：缓存当前 32bit 密钥字与已用字节数
|
||||
private int keystreamWord;
|
||||
private int usedBytes;
|
||||
|
||||
public Zuc256EncryptCtx(Zuc256State state){
|
||||
this.state = state;
|
||||
}
|
||||
|
||||
public Zuc256EncryptCtx(){
|
||||
}
|
||||
|
||||
// 初始化加密上下文
|
||||
public void init(byte[] key32, byte[] iv) {
|
||||
Arrays.fill(st.lfsr, 0);
|
||||
st.r1 = st.r2 = 0;
|
||||
usedBytes = 4; // 令首次进入 update() 时强制拉取新字
|
||||
Zuc256Core.init(st, key32, iv);
|
||||
Arrays.fill(this.buf, (byte) 0);
|
||||
this.buflen = 0;
|
||||
Zuc256Core.initState(this.state, key32, iv);
|
||||
}
|
||||
|
||||
/**
|
||||
* 分段处理：in/out 可同缓冲（就地异或）。
|
||||
*/
|
||||
public void update(byte[] in, int inOff, int inLen, byte[] out, int outOff) {
|
||||
// TODO: 逐字节与 keystreamWord 异或，4 字节耗尽后生成下一字
|
||||
throw new UnsupportedOperationException("TODO: update");
|
||||
// 分阶段处理加密数据
|
||||
public void update(byte[] in, int inlen, byte[] out) {
|
||||
if (in == null || out == null || inlen == 0) return;
|
||||
|
||||
// 处理缓冲区中剩余的非4字节数据
|
||||
if (this.buflen > 0) {
|
||||
int need = 4 - this.buflen;
|
||||
int copy = Math.min(inlen, need);
|
||||
|
||||
System.arraycopy(in, 0, this.buf, this.buflen, copy);
|
||||
this.buflen += copy;
|
||||
|
||||
// 调整输入指针和长度
|
||||
byte[] newIn = new byte[inlen - copy];
|
||||
if (inlen - copy > 0) {
|
||||
System.arraycopy(in, copy, newIn, 0, inlen - copy);
|
||||
}
|
||||
in = newIn;
|
||||
inlen -= copy;
|
||||
|
||||
// 缓冲区已满，处理一个完整的4字节块
|
||||
if (this.buflen == 4) {
|
||||
int keystream = zuc256GenerateKeyword(this.state);
|
||||
int plain = getU32(this.buf, 0);
|
||||
putU32(out, 0, plain ^ keystream);
|
||||
|
||||
this.buflen = 0;
|
||||
Arrays.fill(this.buf, (byte) 0);
|
||||
|
||||
// 调整输出指针
|
||||
byte[] newOut = new byte[out.length - 4];
|
||||
if (out.length - 4 > 0) {
|
||||
System.arraycopy(out, 4, newOut, 0, out.length - 4);
|
||||
}
|
||||
out = newOut;
|
||||
}
|
||||
}
|
||||
|
||||
public void finish(byte[] out, int outOff) {
|
||||
// 流密码无填充；如需 MAC/尾处理，放到 MAC 上下文中
|
||||
// 处理完整的4字节块
|
||||
int fullBlocks = inlen / 4;
|
||||
if (fullBlocks > 0) {
|
||||
int[] keystream = new int[fullBlocks];
|
||||
zuc256GenerateKeystream(this.state, fullBlocks, keystream);
|
||||
|
||||
// 逐块异或加密
|
||||
for (int i = 0; i < fullBlocks; i++) {
|
||||
int plain = getU32(in, i * 4);
|
||||
putU32(out, i * 4, plain ^ keystream[i]);
|
||||
}
|
||||
|
||||
/** 一次性处理（便利方法） */
|
||||
public static void crypt(byte[] key32, byte[] iv, byte[] in, int inOff, int inLen, byte[] out, int outOff) {
|
||||
Zuc256EncryptCtx ctx = new Zuc256EncryptCtx();
|
||||
ctx.init(key32, iv);
|
||||
ctx.update(in, inOff, inLen, out, outOff);
|
||||
ctx.finish(out, outOff + inLen);
|
||||
// 调整输入指针和长度
|
||||
int processed = fullBlocks * 4;
|
||||
byte[] newIn = new byte[inlen - processed];
|
||||
if (inlen - processed > 0) {
|
||||
System.arraycopy(in, processed, newIn, 0, inlen - processed);
|
||||
}
|
||||
in = newIn;
|
||||
inlen -= processed;
|
||||
}
|
||||
|
||||
// 缓存剩余不足4字节的数据
|
||||
if (inlen > 0) {
|
||||
System.arraycopy(in, 0, this.buf, 0, inlen);
|
||||
this.buflen = inlen;
|
||||
}
|
||||
}
|
||||
|
||||
// 完成加密处理
|
||||
public void finish(byte[] out) {
|
||||
if (this == null || out == null) return;
|
||||
|
||||
// 处理缓冲区中剩余的不足4字节数据
|
||||
if (this.buflen > 0) {
|
||||
int keystream = zuc256GenerateKeyword(this.state);
|
||||
byte[] keystreamBytes = new byte[4];
|
||||
putU32(keystreamBytes, 0, keystream);
|
||||
|
||||
// 逐字节异或
|
||||
for (int i = 0; i < this.buflen; i++) {
|
||||
out[i] = (byte) (this.buf[i] ^ keystreamBytes[i]);
|
||||
}
|
||||
}
|
||||
|
||||
// 清理上下文
|
||||
Arrays.fill(this.buf, (byte) 0);
|
||||
this.buflen = 0;
|
||||
Arrays.fill(this.state.LFSR, 0);
|
||||
this.state.R1 = 0;
|
||||
this.state.R2 = 0;
|
||||
}
|
||||
}
|
||||
|
||||
@@ -1,29 +1,15 @@
|
||||
package com.zuc.zuc256;
|
||||
|
||||
/**
|
||||
* MAC 上下文（可选：ZUC-256-EIA3 类似流程）
|
||||
* 这里只给出骨架，按你的 C 代码把细节补齐。
|
||||
* MAC上下文类
|
||||
*/
|
||||
public final class Zuc256MacCtx {
|
||||
private final Zuc256State st = new Zuc256State();
|
||||
private int macBits; // 32/64/128...
|
||||
private int acc; // 累加器/寄存器，视实现调整
|
||||
|
||||
public void init(byte[] key32, byte[] iv, int macBits) {
|
||||
this.macBits = macBits;
|
||||
this.acc = 0;
|
||||
Zuc256Core.init(st, key32, iv);
|
||||
// TODO: 若 MAC 需特殊 IV/派生，按 C 版本处理
|
||||
throw new UnsupportedOperationException("TODO: MAC init details");
|
||||
}
|
||||
|
||||
public void update(byte[] data, int off, int len) {
|
||||
// TODO: 消耗比特/字节流并累积 acc
|
||||
throw new UnsupportedOperationException("TODO: MAC update");
|
||||
}
|
||||
|
||||
public void finish(byte[] tag, int tagOff) {
|
||||
// TODO: 输出 macBits 位标签到 tag[]
|
||||
throw new UnsupportedOperationException("TODO: MAC finish");
|
||||
}
|
||||
int[] LFSR = new int[16];
|
||||
int R1;
|
||||
int R2;
|
||||
byte[] buf = new byte[4];
|
||||
int buflen;
|
||||
int[] T = new int[4];
|
||||
int[] K0 = new int[4];
|
||||
int macbits;
|
||||
}
|
||||
|
||||
@@ -1,16 +1,10 @@
|
||||
package com.zuc.zuc256;
|
||||
|
||||
/**
|
||||
* ZUC 内部状态：LFSR(16x31bit) + R1/R2。
|
||||
* Java 中用 int 保存（仅低 31 位有效）。
|
||||
* ZUC状态类
|
||||
*/
|
||||
public final class Zuc256State {
|
||||
public final int[] lfsr = new int[16]; // 线性反馈移位寄存器，31bit/项
|
||||
public int r1; // 32bit working register
|
||||
public int r2; // 32bit working register
|
||||
|
||||
public void reset() {
|
||||
for (int i = 0; i < lfsr.length; i++) lfsr[i] = 0;
|
||||
r1 = 0; r2 = 0;
|
||||
}
|
||||
int[] LFSR = new int[16]; // 线性反馈移位寄存器
|
||||
int R1; // 寄存器1
|
||||
int R2; // 寄存器2
|
||||
}
|
||||
|
||||
@@ -3,7 +3,6 @@ package com.zuc.zuc256;
|
||||
/**
|
||||
* 常量表：S0/S1 与 ZUC256_D。
|
||||
* 注意：JavaCard 目标环境建议将表定义为 static final 数组，按 int/short 存放。
|
||||
* TODO: 将 C 版本中的表逐项拷入。
|
||||
*/
|
||||
public final class Zuc256Tables {
|
||||
|
||||
@@ -11,18 +10,50 @@ public final class Zuc256Tables {
|
||||
|
||||
// S盒：S0, S1
|
||||
public static final int[] S0 = {
|
||||
// TODO: 填入 256 项
|
||||
0x3e,0x72,0x5b,0x47,0xca,0xe0,0x00,0x33,0x04,0xd1,0x54,0x98,0x09,0xb9,0x6d,0xcb,
|
||||
0x7b,0x1b,0xf9,0x32,0xaf,0x9d,0x6a,0xa5,0xb8,0x2d,0xfc,0x1d,0x08,0x53,0x03,0x90,
|
||||
0x4d,0x4e,0x84,0x99,0xe4,0xce,0xd9,0x91,0xdd,0xb6,0x85,0x48,0x8b,0x29,0x6e,0xac,
|
||||
0xcd,0xc1,0xf8,0x1e,0x73,0x43,0x69,0xc6,0xb5,0xbd,0xfd,0x39,0x63,0x20,0xd4,0x38,
|
||||
0x76,0x7d,0xb2,0xa7,0xcf,0xed,0x57,0xc5,0xf3,0x2c,0xbb,0x14,0x21,0x06,0x55,0x9b,
|
||||
0xe3,0xef,0x5e,0x31,0x4f,0x7f,0x5a,0xa4,0x0d,0x82,0x51,0x49,0x5f,0xba,0x58,0x1c,
|
||||
0x4a,0x16,0xd5,0x17,0xa8,0x92,0x24,0x1f,0x8c,0xff,0xd8,0xae,0x2e,0x01,0xd3,0xad,
|
||||
0x3b,0x4b,0xda,0x46,0xeb,0xc9,0xde,0x9a,0x8f,0x87,0xd7,0x3a,0x80,0x6f,0x2f,0xc8,
|
||||
0xb1,0xb4,0x37,0xf7,0x0a,0x22,0x13,0x28,0x7c,0xcc,0x3c,0x89,0xc7,0xc3,0x96,0x56,
|
||||
0x07,0xbf,0x7e,0xf0,0x0b,0x2b,0x97,0x52,0x35,0x41,0x79,0x61,0xa6,0x4c,0x10,0xfe,
|
||||
0xbc,0x26,0x95,0x88,0x8a,0xb0,0xa3,0xfb,0xc0,0x18,0x94,0xf2,0xe1,0xe5,0xe9,0x5d,
|
||||
0xd0,0xdc,0x11,0x66,0x64,0x5c,0xec,0x59,0x42,0x75,0x12,0xf5,0x74,0x9c,0xaa,0x23,
|
||||
0x0e,0x86,0xab,0xbe,0x2a,0x02,0xe7,0x67,0xe6,0x44,0xa2,0x6c,0xc2,0x93,0x9f,0xf1,
|
||||
0xf6,0xfa,0x36,0xd2,0x50,0x68,0x9e,0x62,0x71,0x15,0x3d,0xd6,0x40,0xc4,0xe2,0x0f,
|
||||
0x8e,0x83,0x77,0x6b,0x25,0x05,0x3f,0x0c,0x30,0xea,0x70,0xb7,0xa1,0xe8,0xa9,0x65,
|
||||
0x8d,0x27,0x1a,0xdb,0x81,0xb3,0xa0,0xf4,0x45,0x7a,0x19,0xdf,0xee,0x78,0x34,0x60
|
||||
};
|
||||
|
||||
public static final int[] S1 = {
|
||||
// TODO: 填入 256 项
|
||||
0x55,0xc2,0x63,0x71,0x3b,0xc8,0x47,0x86,0x9f,0x3c,0xda,0x5b,0x29,0xaa,0xfd,0x77,
|
||||
0x8c,0xc5,0x94,0x0c,0xa6,0x1a,0x13,0x00,0xe3,0xa8,0x16,0x72,0x40,0xf9,0xf8,0x42,
|
||||
0x44,0x26,0x68,0x96,0x81,0xd9,0x45,0x3e,0x10,0x76,0xc6,0xa7,0x8b,0x39,0x43,0xe1,
|
||||
0x3a,0xb5,0x56,0x2a,0xc0,0x6d,0xb3,0x05,0x22,0x66,0xbf,0xdc,0x0b,0xfa,0x62,0x48,
|
||||
0xdd,0x20,0x11,0x06,0x36,0xc9,0xc1,0xcf,0xf6,0x27,0x52,0xbb,0x69,0xf5,0xd4,0x87,
|
||||
0x7f,0x84,0x4c,0xd2,0x9c,0x57,0xa4,0xbc,0x4f,0x9a,0xdf,0xfe,0xd6,0x8d,0x7a,0xeb,
|
||||
0x2b,0x53,0xd8,0x5c,0xa1,0x14,0x17,0xfb,0x23,0xd5,0x7d,0x30,0x67,0x73,0x08,0x09,
|
||||
0xee,0xb7,0x70,0x3f,0x61,0xb2,0x19,0x8e,0x4e,0xe5,0x4b,0x93,0x8f,0x5d,0xdb,0xa9,
|
||||
0xad,0xf1,0xae,0x2e,0xcb,0x0d,0xfc,0xf4,0x2d,0x46,0x6e,0x1d,0x97,0xe8,0xd1,0xe9,
|
||||
0x4d,0x37,0xa5,0x75,0x5e,0x83,0x9e,0xab,0x82,0x9d,0xb9,0x1c,0xe0,0xcd,0x49,0x89,
|
||||
0x01,0xb6,0xbd,0x58,0x24,0xa2,0x5f,0x38,0x78,0x99,0x15,0x90,0x50,0xb8,0x95,0xe4,
|
||||
0xd0,0x91,0xc7,0xce,0xed,0x0f,0xb4,0x6f,0xa0,0xcc,0xf0,0x02,0x4a,0x79,0xc3,0xde,
|
||||
0xa3,0xef,0xea,0x51,0xe6,0x6b,0x18,0xec,0x1b,0x2c,0x80,0xf7,0x74,0xe7,0xff,0x21,
|
||||
0x5a,0x6a,0x54,0x1e,0x41,0x31,0x92,0x35,0xc4,0x33,0x07,0x0a,0xba,0x7e,0x0e,0x34,
|
||||
0x88,0xb1,0x98,0x7c,0xf3,0x3d,0x60,0x6c,0x7b,0xca,0xd3,0x1f,0x32,0x65,0x04,0x28,
|
||||
0x64,0xbe,0x85,0x9b,0x2f,0x59,0x8a,0xd7,0xb0,0x25,0xac,0xaf,0x12,0x03,0xe2,0xf2
|
||||
};
|
||||
|
||||
/**
|
||||
* 常量数组 D（按标准/实现定义）
|
||||
* 说明：根据你的 C 代码布局选择 int[?][?] 或 int[] 线性展开。
|
||||
* 常量数组 D
|
||||
*/
|
||||
public static final int[][] ZUC256_D = {
|
||||
// TODO: 填入
|
||||
{0x22,0x2F,0x24,0x2A,0x6D,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x52,0x10,0x30},
|
||||
{0x22,0x2F,0x25,0x2A,0x6D,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x52,0x10,0x30},
|
||||
{0x23,0x2F,0x24,0x2A,0x6D,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x52,0x10,0x30},
|
||||
{0x23,0x2F,0x25,0x2A,0x6D,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x52,0x10,0x30}
|
||||
};
|
||||
}
|
||||
|
||||
@@ -1,104 +1,104 @@
|
||||
package com.zuc.zuc256;
|
||||
|
||||
import java.util.Locale;
|
||||
|
||||
/**
|
||||
* 辅助工具：装载/存储、位运算、线性变换、打印等。
|
||||
* 默认使用大端序（与大多数参考实现一致），如需小端请统一替换。
|
||||
*/
|
||||
public final class Zuc256Util {
|
||||
|
||||
private Zuc256Util() {}
|
||||
|
||||
// === Byte <-> U32 ===
|
||||
|
||||
/** 从 p[offset..offset+3] 读 32bit（大端） */
|
||||
/** 辅助方法：将字节数组转换为32位整数 */
|
||||
public static int getU32(byte[] p, int offset) {
|
||||
// TODO: 如需小端，改为反序装载
|
||||
int v = ((p[offset] & 0xFF) << 24)
|
||||
| ((p[offset + 1] & 0xFF) << 16)
|
||||
| ((p[offset + 2] & 0xFF) << 8)
|
||||
| (p[offset + 3] & 0xFF);
|
||||
return v;
|
||||
return ((p[offset] & 0xFF) << 24) |
|
||||
((p[offset + 1] & 0xFF) << 16) |
|
||||
((p[offset + 2] & 0xFF) << 8) |
|
||||
(p[offset + 3] & 0xFF);
|
||||
}
|
||||
|
||||
/** 将 v 写入 p[offset..offset+3]（大端） */
|
||||
/** 辅助方法：将32位整数转换为字节数组 */
|
||||
public static void putU32(byte[] p, int offset, int v) {
|
||||
// TODO: 如需小端，改为反序存储
|
||||
p[offset] = (byte)((v >>> 24) & 0xFF);
|
||||
p[offset + 1] = (byte)((v >>> 16) & 0xFF);
|
||||
p[offset + 2] = (byte)((v >>> 8) & 0xFF);
|
||||
p[offset + 3] = (byte)(v & 0xFF);
|
||||
p[offset] = (byte) (v >> 24);
|
||||
p[offset + 1] = (byte) (v >> 16);
|
||||
p[offset + 2] = (byte) (v >> 8);
|
||||
p[offset + 3] = (byte) v;
|
||||
}
|
||||
|
||||
// === 31/32 位运算 ===
|
||||
|
||||
/** 31 位加法（丢弃第 32 位），仅保留低 31 位 */
|
||||
/** 31位加法 */
|
||||
public static int add31(int a, int b) {
|
||||
// TODO: 对齐 C 的具体实现细节（是否有进位回注）
|
||||
return (a + b) & 0x7FFFFFFF;
|
||||
long sum = (long)a + b;
|
||||
return (int) ((sum & 0x7FFFFFFF) + (sum >> 31));
|
||||
}
|
||||
|
||||
/** 31 位循环左移（仅低 31 位参与） */
|
||||
/** 31位旋转 */
|
||||
public static int rot31(int a, int k) {
|
||||
int x = a & 0x7FFFFFFF;
|
||||
k %= 31;
|
||||
return ((x << k) | (x >>> (31 - k))) & 0x7FFFFFFF;
|
||||
return ((a << k) | (a >>> (31 - k))) & 0x7FFFFFFF;
|
||||
}
|
||||
|
||||
/** 32 位循环左移 */
|
||||
/** 32位旋转 */
|
||||
public static int rot32(int a, int k) {
|
||||
int s = k & 31;
|
||||
return (a << s) | (a >>> (32 - s));
|
||||
return (a << k) | (a >>> (32 - k));
|
||||
}
|
||||
|
||||
// === 线性变换（与标准一致） ===
|
||||
|
||||
/**
|
||||
* L1函数
|
||||
*/
|
||||
public static int L1(int x) {
|
||||
// TODO: 填入 L1 具体移位与异或
|
||||
throw new UnsupportedOperationException("TODO: L1");
|
||||
return x ^ rot32(x, 2) ^ rot32(x, 10) ^ rot32(x, 18) ^ rot32(x, 24);
|
||||
}
|
||||
|
||||
/**
|
||||
* L2函数
|
||||
*/
|
||||
public static int L2(int x) {
|
||||
// TODO: 填入 L2 具体移位与异或
|
||||
throw new UnsupportedOperationException("TODO: L2");
|
||||
return x ^ rot32(x, 8) ^ rot32(x, 14) ^ rot32(x, 22) ^ rot32(x, 30);
|
||||
}
|
||||
|
||||
// === 组装整数 ===
|
||||
|
||||
/** makeU31: 由 4 个 8bit 组为 31bit 值（按标准约定截断/掩码） */
|
||||
/** 创建31位无符号整数 */
|
||||
public static int makeU31(int a, int b, int c, int d) {
|
||||
// TODO: 对齐 C 代码的拼接与掩码方式
|
||||
int v = ((a & 0xFF) << 23)
|
||||
| ((b & 0xFF) << 15)
|
||||
| ((c & 0xFF) << 7)
|
||||
| ((d & 0x7F));
|
||||
return v & 0x7FFFFFFF;
|
||||
return (((a & 0xFF) << 23) |
|
||||
((b & 0xFF) << 16) |
|
||||
((c & 0xFF) << 8) |
|
||||
(d & 0xFF)) & 0x7FFFFFFF;
|
||||
}
|
||||
|
||||
/** makeU32: 由 4 个 8bit 组为 32bit 值（大端） */
|
||||
/** 创建32位无符号整数 */
|
||||
public static int makeU32(int a, int b, int c, int d) {
|
||||
return ((a & 0xFF) << 24)
|
||||
| ((b & 0xFF) << 16)
|
||||
| ((c & 0xFF) << 8)
|
||||
| (d & 0xFF);
|
||||
return ((a & 0xFF) << 24) |
|
||||
((b & 0xFF) << 16) |
|
||||
((c & 0xFF) << 8) |
|
||||
(d & 0xFF);
|
||||
}
|
||||
|
||||
// === IV 处理与打印 ===
|
||||
|
||||
/** 将 25 字节输入提取/压缩为 23 字节 IV（按你的 C 规则） */
|
||||
/** 提取IV */
|
||||
public static void extractIv(byte[] input25Byte, byte[] output23Byte) {
|
||||
// TODO: 按 C 逻辑实现
|
||||
throw new UnsupportedOperationException("TODO: extractIv");
|
||||
if (input25Byte == null || output23Byte == null) return;
|
||||
|
||||
// 复制前17字节
|
||||
System.arraycopy(input25Byte, 0, output23Byte, 0, 17);
|
||||
|
||||
// 处理剩余8字节
|
||||
byte[] src = new byte[8];
|
||||
for (int i = 0; i < 8; i++) {
|
||||
src[i] = (byte) (input25Byte[17 + i] & 0x3F);
|
||||
}
|
||||
|
||||
/** 打印十六进制（调试用，生产/JC 环境可移除） */
|
||||
output23Byte[17] = (byte) ((src[0] << 2) | (src[1] >>> 4));
|
||||
output23Byte[18] = (byte) (((src[1] & 0x0F) << 4) | (src[2] >>> 2));
|
||||
output23Byte[19] = (byte) (((src[2] & 0x03) << 6) | src[3]);
|
||||
output23Byte[20] = (byte) ((src[4] << 2) | (src[5] >>> 4));
|
||||
output23Byte[21] = (byte) (((src[5] & 0x0F) << 4) | (src[6] >>> 2));
|
||||
output23Byte[22] = (byte) (((src[6] & 0x03) << 6) | src[7]);
|
||||
}
|
||||
|
||||
/** 打印十六进制（调试用，TODO 生产/JC 环境可移除） */
|
||||
public static void printHex(String label, byte[] data, int len) {
|
||||
StringBuilder sb = new StringBuilder();
|
||||
System.out.print(label + ": ");
|
||||
for (int i = 0; i < len; i++) {
|
||||
sb.append(String.format(Locale.ROOT, "%02X", data[i]));
|
||||
if (i + 1 < len) sb.append(i % 16 == 15 ? "\n" : " ");
|
||||
System.out.printf("%02x ", data[i] & 0xFF);
|
||||
}
|
||||
System.out.println(label + ":\n" + sb);
|
||||
System.out.println();
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user