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在method里面统一定义缓存变量

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zcy
2025-09-09 02:36:40 +08:00
parent dec1fecc16
commit 9405e59ac9
1 changed files with 43 additions and 18 deletions
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61
Project/Src/com/cscn/Method.java
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@@ -51,6 +51,8 @@ public final class Method {
// ======================================
// 输入数据缓冲区最大值
static final short MAX_DATA_BLOCK_SIZE = 128;
// 运行时缓冲：放RAM，避免写EEPROM
byte[] ctx_buf;
short ctx_buflen;
@@ -147,12 +149,13 @@ public final class Method {
public Method() {
// start todo
ctx_buf = JCSystem.makeTransientByteArray((short)4, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
LFSR_hi = JCSystem.makeTransientShortArray((short)16, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
LFSR_lo = JCSystem.makeTransientShortArray((short)16, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
buf1 = JCSystem.makeTransientByteArray(L, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
buf2 = JCSystem.makeTransientByteArray(L, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
// todo buf1 if not use, delete please
buf1 = JCSystem.makeTransientByteArray(MAX_DATA_BLOCK_SIZE, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
// todo buf2 if not use, delete please
buf2 = JCSystem.makeTransientByteArray(MAX_DATA_BLOCK_SIZE, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
stmsi = JCSystem.makeTransientByteArray((short)6, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
location_data = JCSystem.makeTransientByteArray((short)5, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
@@ -201,8 +204,8 @@ public final class Method {
updateZuc256EncryptCtx_ks = JCSystem.makeTransientShortArray((short)2, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
updateZuc256EncryptCtx_plain = JCSystem.makeTransientShortArray((short)2, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
updateZuc256EncryptCtx_res = JCSystem.makeTransientShortArray((short)2, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
updateZuc256EncryptCtx_ks_hi = JCSystem.makeTransientShortArray(fullBlocks, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
updateZuc256EncryptCtx_ks_lo = JCSystem.makeTransientShortArray(fullBlocks, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
updateZuc256EncryptCtx_ks_hi = JCSystem.makeTransientShortArray((short)(MAX_DATA_BLOCK_SIZE/4), JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
updateZuc256EncryptCtx_ks_lo = JCSystem.makeTransientShortArray((short)(MAX_DATA_BLOCK_SIZE/4), JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
// 临时：装一个32位字
updateZuc256EncryptCtx_word = JCSystem.makeTransientShortArray((short)2, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
@@ -240,21 +243,20 @@ public final class Method {
public void processData(APDU apdu) {
short L = (short) INPUT.length;
byte[] apduBuf = apdu.getBuffer();
// 第一次：Enc(Input)
initZuc256EncryptCtx(KEY32, IV25);
updateZuc256EncryptCtx(INPUT, (short) INPUT.length, buf1);
finishZuc256EncryptCtx(buf1); // 若 Input 长度为 4 的倍数则通常无副作用，留着更稳妥
finishZuc256EncryptCtx(buf1, (short) INPUT.length); // 若 Input 长度为 4 的倍数则通常无副作用，留着更稳妥
boolean encMatch = (Util.arrayCompare(buf1, (short)0, ENC_EXPECTED, (short)0, (short)INPUT.length) == 0);
// 第二次：Enc(Enc(Input)) 应还原 Input
initZuc256EncryptCtx(KEY32, IV25);
updateZuc256EncryptCtx(buf1, (short) INPUT.length, buf2);
finishZuc256EncryptCtx(buf2);
finishZuc256EncryptCtx(buf2, (short) INPUT.length);
boolean dblOk = (Util.arrayCompare(buf2, (short)0, INPUT, (short)0, (short)INPUT.length) == 0);
// 返回 2 字节结果：[encMatch, dblOk]，1=真, 0=假
@@ -943,7 +945,10 @@ public final class Method {
// a += (long)LFSR[13] << 17;
// a += (long)LFSR[15] << 15;
// ---- 先准备累加器 A (64位) ----
zuc256GenerateKeyword_A[0] = 0; zuc256GenerateKeyword_A[1] = 0; zuc256GenerateKeyword_A[2] = 0; zuc256GenerateKeyword_A[3] = 0;
zuc256GenerateKeyword_A[0] = 0;
zuc256GenerateKeyword_A[1] = 0;
zuc256GenerateKeyword_A[2] = 0;
zuc256GenerateKeyword_A[3] = 0;
// 临时缓冲
@@ -996,7 +1001,10 @@ public final class Method {
and64_7FFFFFFF_to32(zuc256GenerateKeyword_A, zuc256GenerateKeyword_low31b);
shr64u_31(zuc256GenerateKeyword_A, zuc256GenerateKeyword_r31b);
zuc256GenerateKeyword_v64[0]=0; zuc256GenerateKeyword_v64[1]=0; zuc256GenerateKeyword_v64[2]=0; zuc256GenerateKeyword_v64[3]=0;
zuc256GenerateKeyword_v64[0]=0;
zuc256GenerateKeyword_v64[1]=0;
zuc256GenerateKeyword_v64[2]=0;
zuc256GenerateKeyword_v64[3]=0;
add64(zuc256GenerateKeyword_v64, zuc256GenerateKeyword_low31b);
add64(zuc256GenerateKeyword_v64, zuc256GenerateKeyword_r31b);
@@ -1052,6 +1060,17 @@ public final class Method {
// 初始化MAC密钥
private void zuc256SetMacKey(byte[] K, byte[] IV, short macbits) {
for(short i=0; i<2; i++) {
zuc256SetMacKey_R1[i] = (short) 0;
zuc256SetMacKey_R2[i] = (short) 0;
}
for(short i=0; i<4; i++) {
zuc256SetMacKey_A[i] = (short) 0;
zuc256SetMacKey_vv[i] = (short) 0;
zuc256SetMacKey_v64[i] = (short) 0;
}
// short[] zuc256SetMacKey_D = JCSystem.makeTransientShortArray(Zuc256Tables.D_COLS, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
// short[] zuc256SetMacKey_TMP = JCSystem.makeTransientShortArray((short)2, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
// short[] zuc256SetMacKey_X0 = JCSystem.makeTransientShortArray((short)2, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
@@ -1315,26 +1334,32 @@ public final class Method {
// long a = LFSR[0];
zuc256SetMacKey_tmp32[0] = LFSR_lo[0];
zuc256SetMacKey_tmp32[1] = LFSR_hi[0];
create_64b_from_32b(zuc256SetMacKey_tmp64, zuc256SetMacKey_tmp32, (short)0); add64(zuc256SetMacKey_A, zuc256SetMacKey_tmp64);
create_64b_from_32b(zuc256SetMacKey_tmp64, zuc256SetMacKey_tmp32, (short)0);
add64(zuc256SetMacKey_A, zuc256SetMacKey_tmp64);
// a += (long)LFSR[0] << 8;
create_64b_from_32b(zuc256SetMacKey_tmp64, zuc256SetMacKey_tmp32, (short)8); add64(zuc256SetMacKey_A, zuc256SetMacKey_tmp64);
create_64b_from_32b(zuc256SetMacKey_tmp64, zuc256SetMacKey_tmp32, (short)8);
add64(zuc256SetMacKey_A, zuc256SetMacKey_tmp64);
// a += (long)LFSR[4] << 20;
zuc256SetMacKey_tmp32[0] = LFSR_lo[4]; zuc256SetMacKey_tmp32[1] = LFSR_hi[4];
create_64b_from_32b(zuc256SetMacKey_tmp64, zuc256SetMacKey_tmp32, (short)20); add64(zuc256SetMacKey_A, zuc256SetMacKey_tmp64);
create_64b_from_32b(zuc256SetMacKey_tmp64, zuc256SetMacKey_tmp32, (short)20);
add64(zuc256SetMacKey_A, zuc256SetMacKey_tmp64);
// a += (long)LFSR[10] << 21;
zuc256SetMacKey_tmp32[0] = LFSR_lo[10]; zuc256SetMacKey_tmp32[1] = LFSR_hi[10];
create_64b_from_32b(zuc256SetMacKey_tmp64, zuc256SetMacKey_tmp32, (short)21); add64(zuc256SetMacKey_A, zuc256SetMacKey_tmp64);
create_64b_from_32b(zuc256SetMacKey_tmp64, zuc256SetMacKey_tmp32, (short)21);
add64(zuc256SetMacKey_A, zuc256SetMacKey_tmp64);
// a += (long)LFSR[13] << 17;
zuc256SetMacKey_tmp32[0] = LFSR_lo[13]; zuc256SetMacKey_tmp32[1] = LFSR_hi[13];
create_64b_from_32b(zuc256SetMacKey_tmp64, zuc256SetMacKey_tmp32, (short)17); add64(zuc256SetMacKey_A, zuc256SetMacKey_tmp64);
create_64b_from_32b(zuc256SetMacKey_tmp64, zuc256SetMacKey_tmp32, (short)17);
add64(zuc256SetMacKey_A, zuc256SetMacKey_tmp64);
// a += (long)LFSR[15] << 15;
zuc256SetMacKey_tmp32[0] = LFSR_lo[15]; zuc256SetMacKey_tmp32[1] = LFSR_hi[15];
create_64b_from_32b(zuc256SetMacKey_tmp64, zuc256SetMacKey_tmp32, (short)15); add64(zuc256SetMacKey_A, zuc256SetMacKey_tmp64);
create_64b_from_32b(zuc256SetMacKey_tmp64, zuc256SetMacKey_tmp32, (short)15);
add64(zuc256SetMacKey_A, zuc256SetMacKey_tmp64);
// a = (a & 0x7FFFFFFF) + (a >>> 31);
and64_7FFFFFFF_to32(zuc256SetMacKey_A, zuc256SetMacKey_low31);
@@ -1499,7 +1524,7 @@ public final class Method {
}
// 完成加密处理
public void finishZuc256EncryptCtx(byte[] out) {
public void finishZuc256EncryptCtx(byte[] out, short outLen) {
if (out == null) return;
// 处理缓冲区中剩余的不足4字节数据
if (this.ctx_buflen > 0) {
@@ -1512,7 +1537,7 @@ public final class Method {
putU32(finishZuc256EncryptCtx_keystreamBytes, (short)0, finishZuc256EncryptCtx_ks[0], finishZuc256EncryptCtx_ks[1]);
// 逐字节异或
short outOffset = (short)(out.length - this.ctx_buflen);
short outOffset = (short)(outLen - this.ctx_buflen);
for (short i = 0; i < this.ctx_buflen; i++) {
out[(short)(i+outOffset)] = (byte) (this.ctx_buf[i] ^ finishZuc256EncryptCtx_keystreamBytes[i]);
}