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写基础Applet，试图测试加解密正确性

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zcy
2025-09-05 22:47:16 +08:00
parent a74ab6f212
commit ed52d849a4
9 changed files with 177 additions and 96 deletions
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16
Project/Src/com/cscn/Zuc256Util.java
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@@ -18,8 +18,8 @@ public final class Zuc256Util {
// }
/** 辅助方法：从字节数组取出 32 位整数，存放到 short[2] (lo, hi) */
public static void getU32(byte[] p, short offset, short[] out32 /* len=2 */) {
out32[0] = (short) (((p[offset + 2] & 0xFF) << 8) | (p[offset + 3] & 0xFF)); //低16位
out32[1] = (short) (((p[offset] & 0xFF) << 8) | (p[offset + 1] & 0xFF)); //高16位
out32[0] = (short) (((p[(short)(offset + 2)] & 0xFF) << 8) | (p[(short)(offset + 3)] & 0xFF)); //低16位
out32[1] = (short) (((p[offset] & 0xFF) << 8) | (p[(short)(offset + 1)] & 0xFF)); //高16位
}
@@ -34,11 +34,11 @@ public final class Zuc256Util {
public static void putU32(byte[] p, short offset, short vlo, short vhi) {
// 写高16位
p[offset] = (byte) ((vhi >> 8) & 0xFF);
p[offset + 1] = (byte) (vhi & 0xFF);
p[(short)(offset + 1)] = (byte) (vhi & 0xFF);
// 写低16位
p[offset + 2] = (byte) ((vlo >> 8) & 0xFF);
p[offset + 3] = (byte) (vlo & 0xFF);
p[(short)(offset + 2)] = (byte) ((vlo >> 8) & 0xFF);
p[(short)(offset + 3)] = (byte) (vlo & 0xFF);
}
@@ -101,7 +101,7 @@ public final class Zuc256Util {
bits[i] = (short)((a_lo >>> i) & 1);
}
for (short i = 0; i < 15; i++) {
bits[16 + i] = (short)((a_hi >>> i) & 1);
bits[(short)(16 + i)] = (short)((a_hi >>> i) & 1);
}
// 旋转
@@ -118,7 +118,7 @@ public final class Zuc256Util {
}
short hi = 0;
for (short i = 0; i < 15; i++) {
hi = (short)(hi | (resBits[16 + i] << i));
hi = (short)(hi | (resBits[(short)(16 + i)] << i));
}
out[0] = lo;
@@ -310,7 +310,7 @@ public final class Zuc256Util {
// 处理剩余8字节
byte[] src = new byte[8];
for (short i = 0; i < 8; i++) {
src[i] = (byte) (input25Byte[17 + i] & 0x3F);
src[i] = (byte) (input25Byte[(short)(17 + i)] & 0x3F);
}
output23Byte[17] = (byte) ((src[0] << 2) | (src[1] >>> 4));