* AnsiX98.javaimport java.io.UnsupportedEncodingException; /** * AnsiX98算法类. * */ public class AnsiX98 { /** * 默认编码. */ private static final String ENCODING UTF-8; /** * 转换成pinblock . * * param strPin * 密码 * param strPan * 卡号 * return pinblock */ public static byte[] convertToPinBlock(String strPin, String strPan) { return convertToPinBlockImpl(strPin, strPan); } /** * 还原密码 . * * param pinBlock * pinblock * param strPan * 卡号 * return 密码 */ public static String convertFromPinBlock(byte[] pinBlock, String strPan) { return convertFromPinBlockImpl(pinBlock, strPan); } /** * 还原密码 . * * param pinblock * pinblock * param strPan * 卡号 * return 密码 */ public static String convertFromPinBlockImpl(byte[] pinblock, String strPan) { try { byte[] A new byte[6]; byte[] P new byte[8]; byte[] buf new byte[16]; byte[] pan strPan.getBytes(ENCODING); int i, len; len ((int) pinblock[0]); if (len 0 || len 12) { throw new RuntimeException( The length of PIN must between 1 to 12.); } memset(buf, (byte) F, 14); System.arraycopy(pan, pan.length - 13, buf, 0, 12); for (i 0; i 14; i) { if (buf[i] 0 || (buf[i] 9 buf[i] ! F)) { buf[i] F; } } BCDASCII.fromASCIIToBCD(buf, 0, 12, A, 0, false); P[0] pinblock[1]; for (i 0; i 6; i) { P[i 1] (byte) ((((int) pinblock[i 2]) 0x0ff) ^ (((int) A[i]) 0x0ff)); } BCDASCII.fromBCDToASCII(P, 0, buf, 0, len * 2, false); return new String(buf, 0, len, ENCODING); } catch (UnsupportedEncodingException e) { throw new RuntimeException(e.getMessage(), e); } } /** * 转换pinblock . * * param strPin * 密码 * param strPan * 卡号 * return pinblock */ private static byte[] convertToPinBlockImpl(String strPin, String strPan) { try { byte A[] new byte[6]; byte P[] new byte[7]; byte buf[] new byte[14]; int i; byte pin[] strPin.getBytes(ENCODING); byte pan[] strPan.getBytes(ENCODING); byte pinblock[] new byte[8]; int pin_length pin.length; if (pin_length 0 || pin_length 15) { throw new RuntimeException( The length of PIN must between 1 to 15.); } memset(buf, (byte) F, 14); System.arraycopy(pin, 0, buf, 0, pin_length); BCDASCII.fromASCIIToBCD(buf, 0, 14, P, 0, false); memset(buf, (byte) F, 14); System.arraycopy(pan, pan.length - 13, buf, 0, 12); for (i 0; i 14; i) { if (buf[i] 0 || (buf[i] 9 buf[i] ! F)) buf[i] F; } BCDASCII.fromASCIIToBCD(buf, 0, 12, A, 0, false); for (i 0; i 6; i) pinblock[i 2] (byte) (P[i 1] ^ A[i]); pinblock[0] (byte) pin_length; pinblock[1] P[0]; return pinblock; } catch (UnsupportedEncodingException e) { throw new RuntimeException(e.getMessage(), e); } } /** * 设置字节数组 . * * param buf * 字节数组 * param b * 字节 * param size * 数量 */ private static void memset(byte[] buf, byte b, int size) { for (int i 0; i size; i) { buf[i] b; } } /** * 测试方法 . * * param args * . */ public static void main(String[] args) { String PAN 6228480051229181915; String PIN 258258; byte[] pinblock AnsiX98.convertToPinBlock(PIN, PAN); System.out.println(BCDASCII .fromBCDToASCIIString(pinblock, 0, 16, false)); System.out.println(AnsiX98.convertFromPinBlock(pinblock, PAN)); } }* BCDASCII.java/** * BCD和ASCII转换工具类. * */ public class BCDASCII { /** * 默认编码. */ private static final String ENCODING UTF-8; /** * A的ascii. */ public final static byte ALPHA_A_ASCII_VALUE 0x41; /** * a的ascii. */ public final static byte ALPHA_a_ASCII_VALUE 0x61; /** * 0的ascii. */ public final static byte DIGITAL_0_ASCII_VALUE 0x30; /** * 构造函数 . */ private BCDASCII() { } /** * BCD转成ASCII . * * param bcdBuf * bcd字节 * param bcdOffset * 位移 * param asciiBuf * ascii字节 * param asciiOffset * 位移 * param asciiLen * 长度 * param rightAlignFlag * 右对齐 */ public static void fromBCDToASCII(byte[] bcdBuf, int bcdOffset, byte[] asciiBuf, int asciiOffset, int asciiLen, boolean rightAlignFlag) { int cnt; if (((asciiLen 1) 1) rightAlignFlag) { cnt 1; asciiLen; } else cnt 0; for (; cnt asciiLen; cnt, asciiOffset) { asciiBuf[asciiOffset] (byte) ((((cnt) 1) 1) ? (bcdBuf[bcdOffset] 0x0f) : ((bcdBuf[bcdOffset] 4) 0x0f)); asciiBuf[asciiOffset] (byte) (asciiBuf[asciiOffset] ((asciiBuf[asciiOffset] 9) ? (ALPHA_A_ASCII_VALUE - 10) : DIGITAL_0_ASCII_VALUE)); } } /** * BCD转成ASCII . * * param bcdBuf * bcd字节 * param bcdOffset * 位移 * param asciiLen * ascii长度 * param rightAlignFlag * 右对齐 * return ascii字节 */ public static byte[] fromBCDToASCII(byte[] bcdBuf, int bcdOffset, int asciiLen, boolean rightAlignFlag) { byte[] asciiBuf new byte[asciiLen]; fromBCDToASCII(bcdBuf, bcdOffset, asciiBuf, 0, asciiLen, rightAlignFlag); return asciiBuf; } /** * BCD转成ASCII . * * param bcdBuf * bcd字节 * param bcdOffset * 位移 * param asciiLen * ascii长度 * param rightAlignFlag * 右对齐 * return ascii字符串 */ public static String fromBCDToASCIIString(byte[] bcdBuf, int bcdOffset, int asciiLen, boolean rightAlignFlag) { try { return new String(fromBCDToASCII(bcdBuf, bcdOffset, asciiLen, rightAlignFlag), ENCODING); } catch (Exception e) { throw new RuntimeException(e.getMessage(), e); } } /** * ASCII转成BCD . * * param asciiBuf * ascii字节 * param asciiOffset * ascii位移 * param asciiLen * ascii长度 * param bcdBuf * bcd字节 * param bcdOffset * bcd位移 * param rightAlignFlag * 是否右对齐 */ public static void fromASCIIToBCD(byte[] asciiBuf, int asciiOffset, int asciiLen, byte[] bcdBuf, int bcdOffset, boolean rightAlignFlag) { int cnt; byte ch, ch1; if (((asciiLen 1) 1) rightAlignFlag) { ch1 0; } else { ch1 0x55; } for (cnt 0; cnt asciiLen; cnt, asciiOffset) { if (asciiBuf[asciiOffset] ALPHA_a_ASCII_VALUE) ch (byte) (asciiBuf[asciiOffset] - ALPHA_a_ASCII_VALUE 10); else if (asciiBuf[asciiOffset] ALPHA_A_ASCII_VALUE) ch (byte) (asciiBuf[asciiOffset] - ALPHA_A_ASCII_VALUE 10); else if (asciiBuf[asciiOffset] DIGITAL_0_ASCII_VALUE) ch (byte) (asciiBuf[asciiOffset] - DIGITAL_0_ASCII_VALUE); else ch 0x00; if (ch1 0x55) ch1 ch; else { bcdBuf[bcdOffset] (byte) (ch1 4 | ch); bcdOffset; ch1 0x55; } } if (ch1 ! 0x55) bcdBuf[bcdOffset] (byte) (ch1 4); } /** * ASCII转成BCD . * * param asciiStr * ascii字符串 * param asciiOffset * ascii位移 * param asciiLen * ascii长度 * param bcdBuf * bcd字节 * param bcdOffset * bcd位移 * param rightAlignFlag * 是否右对齐 */ public static void fromASCIIToBCD(String asciiStr, int asciiOffset, int asciiLen, byte[] bcdBuf, int bcdOffset, boolean rightAlignFlag) { try { byte[] asciiBuf asciiStr.getBytes(ENCODING); fromASCIIToBCD(asciiBuf, asciiOffset, asciiLen, bcdBuf, bcdOffset, rightAlignFlag); } catch (Exception e) { throw new RuntimeException(e.getMessage(), e); } } /** * ASCII转成BCD . * * param asciiBuf * ascii字节 * param asciiOffset * ascii位移 * param asciiLen * ascii长度 * param rightAlignFlag * 是否右对齐 * return ascii字节 */ public static byte[] fromASCIIToBCD(byte[] asciiBuf, int asciiOffset, int asciiLen, boolean rightAlignFlag) { byte[] bcdBuf new byte[(asciiLen 1) / 2]; fromASCIIToBCD(asciiBuf, asciiOffset, asciiLen, bcdBuf, 0, rightAlignFlag); return bcdBuf; } /** * ASCII转成BCD . * * param asciiStr * ascii字符串 * param asciiOffset * ascii位移 * param asciiLen * ascii长度 * param rightAlignFlag * 是否右对齐 * return ascii字符串 */ public static byte[] fromASCIIToBCD(String asciiStr, int asciiOffset, int asciiLen, boolean rightAlignFlag) { try { byte[] asciiBuf asciiStr.getBytes(ENCODING); return fromASCIIToBCD(asciiBuf, asciiOffset, asciiLen, rightAlignFlag); } catch (Exception e) { throw new RuntimeException(e.getMessage(), e); } } }E:\Programs\Java\jdk1.8.0_361\bin\java.exe -javaagent:E:\Program Files\JetBrains\IntelliJ IDEA 2022.2.3\lib\idea_rt.jar51881:E:\Program Files\JetBrains\IntelliJ IDEA 2022.2.3\bin -Dfile.encodingUTF-8 -classpath E:\Programs\Java\jdk1.8.0_361\jre\lib\charsets.jar;E:\Programs\Java\jdk1.8.0_361\jre\lib\deploy.jar;E:\Programs\Java\jdk1.8.0_361\jre\lib\ext\access-bridge-64.jar;E:\Programs\Java\jdk1.8.0_361\jre\lib\ext\cldrdata.jar;E:\Programs\Java\jdk1.8.0_361\jre\lib\ext\dnsns.jar;E:\Programs\Java\jdk1.8.0_361\jre\lib\ext\jaccess.jar;E:\Programs\Java\jdk1.8.0_361\jre\lib\ext\jfxrt.jar;E:\Programs\Java\jdk1.8.0_361\jre\lib\ext\localedata.jar;E:\Programs\Java\jdk1.8.0_361\jre\lib\ext\nashorn.jar;E:\Programs\Java\jdk1.8.0_361\jre\lib\ext\sunec.jar;E:\Programs\Java\jdk1.8.0_361\jre\lib\ext\sunjce_provider.jar;E:\Programs\Java\jdk1.8.0_361\jre\lib\ext\sunmscapi.jar;E:\Programs\Java\jdk1.8.0_361\jre\lib\ext\sunpkcs11.jar;E:\Programs\Java\jdk1.8.0_361\jre\lib\ext\zipfs.jar;E:\Programs\Java\jdk1.8.0_361\jre\lib\javaws.jar;E:\Programs\Java\jdk1.8.0_361\jre\lib\jce.jar;E:\Programs\Java\jdk1.8.0_361\jre\lib\jfr.jar;E:\Programs\Java\jdk1.8.0_361\jre\lib\jfxswt.jar;E:\Programs\Java\jdk1.8.0_361\jre\lib\jsse.jar;E:\Programs\Java\jdk1.8.0_361\jre\lib\management-agent.jar;E:\Programs\Java\jdk1.8.0_361\jre\lib\plugin.jar;E:\Programs\Java\jdk1.8.0_361\jre\lib\resources.jar;E:\Programs\Java\jdk1.8.0_361\jre\lib\rt.jar;E:\workspace\AnsiX98\out\production\AnsiX98 AnsiX9806258209DD6E7E6E258258Process finished with exit code 0