import java.security.NoSuchAlgorithmException;
public class Hash {
- private static char hexDigit[] = "0123456789abcdef".toCharArray();
-
+ private static char hexDigit[] = "0123456789abcdef".toCharArray();
+
/////////////////////////////////
// MD5
/////////////////////////////////
- /**
- * Encrypt MD5 from Byte Array to Byte Array
- * @param input
- * @return
- * @throws NoSuchAlgorithmException
- */
- public static byte[] hashMD5 (byte[] input) throws NoSuchAlgorithmException {
- // Note: Protect against Multi-thread issues with new MessageDigest
- MessageDigest md = MessageDigest.getInstance("MD5");
- md.update(input);
- return md.digest();
- }
+ /**
+ * Encrypt MD5 from Byte Array to Byte Array
+ * @param input
+ * @return
+ * @throws NoSuchAlgorithmException
+ */
+ public static byte[] hashMD5 (byte[] input) throws NoSuchAlgorithmException {
+ // Note: Protect against Multi-thread issues with new MessageDigest
+ MessageDigest md = MessageDigest.getInstance("MD5");
+ md.update(input);
+ return md.digest();
+ }
- /**
- * Encrypt MD5 from Byte Array to Byte Array
- * @param input
- * @return
- * @throws NoSuchAlgorithmException
- */
- public static byte[] hashMD5 (byte[] input, int offset, int length) throws NoSuchAlgorithmException {
- // Note: Protect against Multi-thread issues with new MessageDigest
- MessageDigest md = MessageDigest.getInstance("MD5");
- md.update(input,offset,length);
- return md.digest();
- }
+ /**
+ * Encrypt MD5 from Byte Array to Byte Array
+ * @param input
+ * @return
+ * @throws NoSuchAlgorithmException
+ */
+ public static byte[] hashMD5 (byte[] input, int offset, int length) throws NoSuchAlgorithmException {
+ // Note: Protect against Multi-thread issues with new MessageDigest
+ MessageDigest md = MessageDigest.getInstance("MD5");
+ md.update(input,offset,length);
+ return md.digest();
+ }
- /**
- * Convenience Function: Encrypt MD5 from String to String Hex representation
- *
- * @param input
- * @return
- * @throws NoSuchAlgorithmException
- */
- public static String hashMD5asStringHex(String input) throws NoSuchAlgorithmException {
- byte[] output = hashMD5(input.getBytes());
- StringBuilder sb = new StringBuilder("0x");
- for (byte b : output) {
- sb.append(hexDigit[(b >> 4) & 0x0f]);
- sb.append(hexDigit[b & 0x0f]);
- }
- return sb.toString();
- }
+ /**
+ * Convenience Function: Encrypt MD5 from String to String Hex representation
+ *
+ * @param input
+ * @return
+ * @throws NoSuchAlgorithmException
+ */
+ public static String hashMD5asStringHex(String input) throws NoSuchAlgorithmException {
+ byte[] output = hashMD5(input.getBytes());
+ StringBuilder sb = new StringBuilder("0x");
+ for (byte b : output) {
+ sb.append(hexDigit[(b >> 4) & 0x0f]);
+ sb.append(hexDigit[b & 0x0f]);
+ }
+ return sb.toString();
+ }
/////////////////////////////////
// SHA256
/////////////////////////////////
- /**
- * SHA256 Hashing
- */
- public static byte[] hashSHA256(byte[] input) throws NoSuchAlgorithmException {
- // Note: Protect against Multi-thread issues with new MessageDigest
- MessageDigest md = MessageDigest.getInstance("SHA-256");
- md.update(input);
- return md.digest();
- }
+ /**
+ * SHA256 Hashing
+ */
+ public static byte[] hashSHA256(byte[] input) throws NoSuchAlgorithmException {
+ // Note: Protect against Multi-thread issues with new MessageDigest
+ MessageDigest md = MessageDigest.getInstance("SHA-256");
+ md.update(input);
+ return md.digest();
+ }
- /**
- * SHA256 Hashing
- */
- public static byte[] hashSHA256(byte[] input, int offset, int length) throws NoSuchAlgorithmException {
- // Note: Protect against Multi-thread issues with new MessageDigest
- MessageDigest md = MessageDigest.getInstance("SHA-256");
- md.update(input,offset,length);
- return md.digest();
- }
-
- /**
- * Convenience Function: Hash from String to String Hex representation
- *
- * @param input
- * @return
- * @throws NoSuchAlgorithmException
- */
- public static String hashSHA256asStringHex(String input) throws NoSuchAlgorithmException {
- return toHex(hashSHA256(input.getBytes()));
- }
+ /**
+ * SHA256 Hashing
+ */
+ public static byte[] hashSHA256(byte[] input, int offset, int length) throws NoSuchAlgorithmException {
+ // Note: Protect against Multi-thread issues with new MessageDigest
+ MessageDigest md = MessageDigest.getInstance("SHA-256");
+ md.update(input,offset,length);
+ return md.digest();
+ }
+
+ /**
+ * Convenience Function: Hash from String to String Hex representation
+ *
+ * @param input
+ * @return
+ * @throws NoSuchAlgorithmException
+ */
+ public static String hashSHA256asStringHex(String input) throws NoSuchAlgorithmException {
+ return toHex(hashSHA256(input.getBytes()));
+ }
- /**
- * Convenience Function: Hash from String to String Hex representation
- *
- * @param input
- * @return
- * @throws NoSuchAlgorithmException
- */
- public static String hashSHA256asStringHex(String input, int salt) throws NoSuchAlgorithmException {
- byte[] in = input.getBytes();
- ByteBuffer bb = ByteBuffer.allocate(Integer.SIZE + in.length);
- bb.putInt(salt);
- bb.put(input.getBytes());
- return toHex(Hash.hashSHA256(bb.array()));
- }
-
- /**
- * Compare two byte arrays for equivalency
- * @param ba1
- * @param ba2
- * @return
- */
- public static boolean isEqual(byte ba1[], byte ba2[]) {
- if(ba1.length!=ba2.length)return false;
- for(int i = 0;i<ba1.length; ++i) {
- if(ba1[i]!=ba2[i])return false;
- }
- return true;
- }
+ /**
+ * Convenience Function: Hash from String to String Hex representation
+ *
+ * @param input
+ * @return
+ * @throws NoSuchAlgorithmException
+ */
+ public static String hashSHA256asStringHex(String input, int salt) throws NoSuchAlgorithmException {
+ byte[] in = input.getBytes();
+ ByteBuffer bb = ByteBuffer.allocate(Integer.SIZE + in.length);
+ bb.putInt(salt);
+ bb.put(input.getBytes());
+ return toHex(Hash.hashSHA256(bb.array()));
+ }
+
+ /**
+ * Compare two byte arrays for equivalency
+ * @param ba1
+ * @param ba2
+ * @return
+ */
+ public static boolean isEqual(byte ba1[], byte ba2[]) {
+ if(ba1.length!=ba2.length)return false;
+ for(int i = 0;i<ba1.length; ++i) {
+ if(ba1[i]!=ba2[i])return false;
+ }
+ return true;
+ }
- public static int compareTo(byte[] a, byte[] b) {
- int end = Math.min(a.length, b.length);
- int compare = 0;
- for(int i=0;compare == 0 && i<end;++i) {
- compare = a[i]-b[i];
- }
- if(compare==0)compare=a.length-b.length;
- return compare;
- }
+ public static int compareTo(byte[] a, byte[] b) {
+ int end = Math.min(a.length, b.length);
+ int compare = 0;
+ for(int i=0;compare == 0 && i<end;++i) {
+ compare = a[i]-b[i];
+ }
+ if(compare==0)compare=a.length-b.length;
+ return compare;
+ }
- public static String toHexNo0x(byte[] ba) {
- StringBuilder sb = new StringBuilder();
- for (byte b : ba) {
- sb.append(hexDigit[(b >> 4) & 0x0f]);
- sb.append(hexDigit[b & 0x0f]);
- }
- return sb.toString();
- }
+ public static String toHexNo0x(byte[] ba) {
+ StringBuilder sb = new StringBuilder();
+ for (byte b : ba) {
+ sb.append(hexDigit[(b >> 4) & 0x0f]);
+ sb.append(hexDigit[b & 0x0f]);
+ }
+ return sb.toString();
+ }
- public static String toHex(byte[] ba) {
- StringBuilder sb = new StringBuilder("0x");
- for (byte b : ba) {
- sb.append(hexDigit[(b >> 4) & 0x0f]);
- sb.append(hexDigit[b & 0x0f]);
- }
- return sb.toString();
- }
-
- public static String toHex(byte[] ba, int start, int length) {
- StringBuilder sb = new StringBuilder("0x");
- for (int i=start;i<length;++i) {
- sb.append(hexDigit[(ba[i] >> 4) & 0x0f]);
- sb.append(hexDigit[ba[i] & 0x0f]);
- }
- return sb.toString();
- }
+ public static String toHex(byte[] ba) {
+ StringBuilder sb = new StringBuilder("0x");
+ for (byte b : ba) {
+ sb.append(hexDigit[(b >> 4) & 0x0f]);
+ sb.append(hexDigit[b & 0x0f]);
+ }
+ return sb.toString();
+ }
+
+ public static String toHex(byte[] ba, int start, int length) {
+ StringBuilder sb = new StringBuilder("0x");
+ for (int i=start;i<length;++i) {
+ sb.append(hexDigit[(ba[i] >> 4) & 0x0f]);
+ sb.append(hexDigit[ba[i] & 0x0f]);
+ }
+ return sb.toString();
+ }
-
- public static byte[] fromHex(String s) throws CadiException{
- if(!s.startsWith("0x")) {
- throw new CadiException("HexString must start with \"0x\"");
- }
- boolean high = true;
- int c;
- byte b;
- byte[] ba = new byte[(s.length()-2)/2];
- int idx;
- for(int i=2;i<s.length();++i) {
- c = s.charAt(i);
- if(c>=0x30 && c<=0x39) {
- b=(byte)(c-0x30);
- } else if(c>=0x61 && c<=0x66) {
- b=(byte)(c-0x57); // account for "A"
- } else if(c>=0x41 && c<=0x46) {
- b=(byte)(c-0x37);
- } else {
- throw new CadiException("Invalid char '" + c + "' in HexString");
- }
- idx = (i-2)/2;
- if(high) {
- ba[idx]=(byte)(b<<4);
- high = false;
- } else {
- ba[idx]|=b;
- high = true;
- }
- }
- return ba;
- }
+
+ public static byte[] fromHex(String s) throws CadiException{
+ if(!s.startsWith("0x")) {
+ throw new CadiException("HexString must start with \"0x\"");
+ }
+ boolean high = true;
+ int c;
+ byte b;
+ byte[] ba = new byte[(s.length()-2)/2];
+ int idx;
+ for(int i=2;i<s.length();++i) {
+ c = s.charAt(i);
+ if(c>=0x30 && c<=0x39) {
+ b=(byte)(c-0x30);
+ } else if(c>=0x61 && c<=0x66) {
+ b=(byte)(c-0x57); // account for "A"
+ } else if(c>=0x41 && c<=0x46) {
+ b=(byte)(c-0x37);
+ } else {
+ throw new CadiException("Invalid char '" + c + "' in HexString");
+ }
+ idx = (i-2)/2;
+ if(high) {
+ ba[idx]=(byte)(b<<4);
+ high = false;
+ } else {
+ ba[idx]|=b;
+ high = true;
+ }
+ }
+ return ba;
+ }
- /**
- * Does not expect to start with "0x"
- * if Any Character doesn't match, it returns null;
- *
- * @param s
- * @return
- */
- public static byte[] fromHexNo0x(String s) {
- int c;
- byte b;
- byte[] ba;
- boolean high;
- int start;
- if(s.length()%2==0) {
- ba = new byte[s.length()/2];
- high=true;
- start=0;
- } else {
- ba = new byte[(s.length()/2)+1];
- high = false;
- start=1;
- }
- int idx;
- for(int i=start;i<s.length();++i) {
- c = s.charAt((i-start));
- if(c>=0x30 && c<=0x39) {
- b=(byte)(c-0x30);
- } else if(c>=0x61 && c<=0x66) {
- b=(byte)(c-0x57); // account for "A"
- } else if(c>=0x41 && c<=0x46) {
- b=(byte)(c-0x37);
- } else {
- return null;
- }
- idx = i/2;
- if(high) {
- ba[idx]=(byte)(b<<4);
- high = false;
- } else {
- ba[idx]|=b;
- high = true;
- }
- }
- return ba;
- }
+ /**
+ * Does not expect to start with "0x"
+ * if Any Character doesn't match, it returns null;
+ *
+ * @param s
+ * @return
+ */
+ public static byte[] fromHexNo0x(String s) {
+ int c;
+ byte b;
+ byte[] ba;
+ boolean high;
+ int start;
+ if(s.length()%2==0) {
+ ba = new byte[s.length()/2];
+ high=true;
+ start=0;
+ } else {
+ ba = new byte[(s.length()/2)+1];
+ high = false;
+ start=1;
+ }
+ int idx;
+ for(int i=start;i<s.length();++i) {
+ c = s.charAt((i-start));
+ if(c>=0x30 && c<=0x39) {
+ b=(byte)(c-0x30);
+ } else if(c>=0x61 && c<=0x66) {
+ b=(byte)(c-0x57); // account for "A"
+ } else if(c>=0x41 && c<=0x46) {
+ b=(byte)(c-0x37);
+ } else {
+ return null;
+ }
+ idx = i/2;
+ if(high) {
+ ba[idx]=(byte)(b<<4);
+ high = false;
+ } else {
+ ba[idx]|=b;
+ high = true;
+ }
+ }
+ return ba;
+ }
}
Code Review / aaf / authz.git / blobdiff