Removed unused bcrypt password hashing methods (#852)

Co-authored-by: Jeroen van Erp <jeroen@hierynomus.com>

src/main/java/com/hierynomus/sshj/userauth/keyprovider/bcrypt/BCrypt.java

@@ -14,11 +14,9 @@
 
 package com.hierynomus.sshj.userauth.keyprovider.bcrypt;
 
-import java.io.UnsupportedEncodingException;
 import java.security.DigestException;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
-import java.security.SecureRandom;
 
 /**
  * BCrypt implements OpenBSD-style Blowfish password hashing using
@@ -30,32 +28,6 @@ import java.security.SecureRandom;
  * based on Bruce Schneier's Blowfish cipher. The work factor of
  * the algorithm is parameterised, so it can be increased as
  * computers get faster.
- * <p>
- * Usage is really simple. To hash a password for the first time,
- * call the hashpw method with a random salt, like this:
- * <p>
- * <code>
- * String pw_hash = BCrypt.hashpw(plain_password, BCrypt.gensalt()); <br>
- * </code>
- * <p>
- * To check whether a plaintext password matches one that has been
- * hashed previously, use the checkpw method:
- * <p>
- * <code>
- * if (BCrypt.checkpw(candidate_password, stored_hash))<br>
- * &nbsp;&nbsp;&nbsp;&nbsp;System.out.println("It matches");<br>
- * else<br>
- * &nbsp;&nbsp;&nbsp;&nbsp;System.out.println("It does not match");<br>
- * </code>
- * <p>
- * The gensalt() method takes an optional parameter (log_rounds)
- * that determines the computational complexity of the hashing:
- * <p>
- * <code>
- * String strong_salt = BCrypt.gensalt(10)<br>
- * String stronger_salt = BCrypt.gensalt(12)<br>
- * </code>
- * <p>
  * The amount of work increases exponentially (2**log_rounds), so
  * each increment is twice as much work. The default log_rounds is
  * 10, and the valid range is 4 to 30.
@@ -64,22 +36,18 @@ import java.security.SecureRandom;
  * @version 0.2
  */
 public class BCrypt {
-    // BCrypt parameters
-    private static final int GENSALT_DEFAULT_LOG2_ROUNDS = 10;
-    private static final int BCRYPT_SALT_LEN = 16;
-
     // Blowfish parameters
     private static final int BLOWFISH_NUM_ROUNDS = 16;
 
     // Initial contents of key schedule
-    private static final int P_orig[] = {
+    private static final int[] P_orig = {
             0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344,
             0xa4093822, 0x299f31d0, 0x082efa98, 0xec4e6c89,
             0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c,
             0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917,
             0x9216d5d9, 0x8979fb1b
     };
-    private static final int S_orig[] = {
+    private static final int[] S_orig = {
             0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7,
             0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99,
             0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16,
@@ -344,149 +312,9 @@ public class BCrypt {
             0x66697368, 0x53776174, 0x44796e61, 0x6d697465,
     };
 
-    // bcrypt IV: "OrpheanBeholderScryDoubt". The C implementation calls
-    // this "ciphertext", but it is really plaintext or an IV. We keep
-    // the name to make code comparison easier.
-    static private final int bf_crypt_ciphertext[] = {
-            0x4f727068, 0x65616e42, 0x65686f6c,
-            0x64657253, 0x63727944, 0x6f756274
-    };
-
-    // Table for Base64 encoding
-    static private final char base64_code[] = {
-            '.', '/', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J',
-            'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V',
-            'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
-            'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't',
-            'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5',
-            '6', '7', '8', '9'
-    };
-
-    // Table for Base64 decoding
-    static private final byte index_64[] = {
-            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-            -1, -1, -1, -1, -1, -1, 0, 1, 54, 55,
-            56, 57, 58, 59, 60, 61, 62, 63, -1, -1,
-            -1, -1, -1, -1, -1, 2, 3, 4, 5, 6,
-            7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
-            17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27,
-            -1, -1, -1, -1, -1, -1, 28, 29, 30,
-            31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
-            41, 42, 43, 44, 45, 46, 47, 48, 49, 50,
-            51, 52, 53, -1, -1, -1, -1, -1
-    };
-
     // Expanded Blowfish key
-    private int P[];
+    private int[] P;
-    private int S[];
+    private int[] S;
-
-    /**
-     * Encode a byte array using bcrypt's slightly-modified base64
-     * encoding scheme. Note that this is *not* compatible with
-     * the standard MIME-base64 encoding.
-     *
-     * @param d	the byte array to encode
-     * @param len	the number of bytes to encode
-     * @return	base64-encoded string
-     * @exception IllegalArgumentException if the length is invalid
-     */
-    private static String encode_base64(byte d[], int len)
-            throws IllegalArgumentException {
-        int off = 0;
-        StringBuffer rs = new StringBuffer();
-        int c1, c2;
-
-        if (len <= 0 || len > d.length)
-            throw new IllegalArgumentException ("Invalid len");
-
-        while (off < len) {
-            c1 = d[off++] & 0xff;
-            rs.append(base64_code[(c1 >> 2) & 0x3f]);
-            c1 = (c1 & 0x03) << 4;
-            if (off >= len) {
-                rs.append(base64_code[c1 & 0x3f]);
-                break;
-            }
-            c2 = d[off++] & 0xff;
-            c1 |= (c2 >> 4) & 0x0f;
-            rs.append(base64_code[c1 & 0x3f]);
-            c1 = (c2 & 0x0f) << 2;
-            if (off >= len) {
-                rs.append(base64_code[c1 & 0x3f]);
-                break;
-            }
-            c2 = d[off++] & 0xff;
-            c1 |= (c2 >> 6) & 0x03;
-            rs.append(base64_code[c1 & 0x3f]);
-            rs.append(base64_code[c2 & 0x3f]);
-        }
-        return rs.toString();
-    }
-
-    /**
-     * Look up the 3 bits base64-encoded by the specified character,
-     * range-checking againt conversion table
-     * @param x	the base64-encoded value
-     * @return	the decoded value of x
-     */
-    private static byte char64(char x) {
-        if ((int)x < 0 || (int)x > index_64.length)
-            return -1;
-        return index_64[(int)x];
-    }
-
-    /**
-     * Decode a string encoded using bcrypt's base64 scheme to a
-     * byte array. Note that this is *not* compatible with
-     * the standard MIME-base64 encoding.
-     * @param s	the string to decode
-     * @param maxolen	the maximum number of bytes to decode
-     * @return	an array containing the decoded bytes
-     * @throws IllegalArgumentException if maxolen is invalid
-     */
-    private static byte[] decode_base64(String s, int maxolen)
-            throws IllegalArgumentException {
-        StringBuffer rs = new StringBuffer();
-        int off = 0, slen = s.length(), olen = 0;
-        byte ret[];
-        byte c1, c2, c3, c4, o;
-
-        if (maxolen <= 0)
-            throw new IllegalArgumentException ("Invalid maxolen");
-
-        while (off < slen - 1 && olen < maxolen) {
-            c1 = char64(s.charAt(off++));
-            c2 = char64(s.charAt(off++));
-            if (c1 == -1 || c2 == -1)
-                break;
-            o = (byte)(c1 << 2);
-            o |= (c2 & 0x30) >> 4;
-            rs.append((char)o);
-            if (++olen >= maxolen || off >= slen)
-                break;
-            c3 = char64(s.charAt(off++));
-            if (c3 == -1)
-                break;
-            o = (byte)((c2 & 0x0f) << 4);
-            o |= (c3 & 0x3c) >> 2;
-            rs.append((char)o);
-            if (++olen >= maxolen || off >= slen)
-                break;
-            c4 = char64(s.charAt(off++));
-            o = (byte)((c3 & 0x03) << 6);
-            o |= c4;
-            rs.append((char)o);
-            ++olen;
-        }
-
-        ret = new byte[olen];
-        for (off = 0; off < olen; off++)
-            ret[off] = (byte)rs.charAt(off);
-        return ret;
-    }
 
     /**
      * Blowfish encipher a single 64-bit block encoded as
@@ -494,7 +322,7 @@ public class BCrypt {
      * @param lr	an array containing the two 32-bit half blocks
      * @param off	the position in the array of the blocks
      */
-    private final void encipher(int lr[], int off) {
+    private void encipher(int[] lr, int off) {
         int i, n, l = lr[off], r = lr[off + 1];
 
         l ^= P[0];
@@ -524,7 +352,7 @@ public class BCrypt {
      * current offset into data
      * @return	the next word of material from data
      */
-    private static int streamtoword(byte data[], int offp[]) {
+    private static int streamtoword(byte[] data, int[] offp) {
         int i;
         int word = 0;
         int off = offp[0];
@@ -542,18 +370,18 @@ public class BCrypt {
      * Initialise the Blowfish key schedule
      */
     private void init_key() {
-        P = (int[])P_orig.clone();
+        P = P_orig.clone();
-        S = (int[])S_orig.clone();
+        S = S_orig.clone();
     }
 
     /**
      * Key the Blowfish cipher
      * @param key	an array containing the key
      */
-    private void key(byte key[]) {
+    private void key(byte[] key) {
         int i;
-        int koffp[] = { 0 };
+        int[] koffp = { 0 };
-        int lr[] = { 0, 0 };
+        int[] lr = { 0, 0 };
         int plen = P.length, slen = S.length;
 
         for (i = 0; i < plen; i++)
@@ -579,10 +407,10 @@ public class BCrypt {
      * @param data	salt information
      * @param key	password information
      */
-    private void ekskey(byte data[], byte key[]) {
+    private void ekskey(byte[] data, byte[] key) {
         int i;
-        int koffp[] = { 0 }, doffp[] = { 0 };
+        int[] koffp = { 0 }, doffp = { 0 };
-        int lr[] = { 0, 0 };
+        int[] lr = { 0, 0 };
         int plen = P.length, slen = S.length;
 
         for (i = 0; i < plen; i++)
@@ -687,183 +515,4 @@ public class BCrypt {
             throw new RuntimeException(e);
         }
     }
-
-    /**
-     * Perform the central password hashing step in the
-     * bcrypt scheme
-     * @param password	the password to hash
-     * @param salt	the binary salt to hash with the password
-     * @param log_rounds	the binary logarithm of the number
-     * of rounds of hashing to apply
-     * @param cdata         the plaintext to encrypt
-     * @return	an array containing the binary hashed password
-     */
-    public byte[] crypt_raw(byte password[], byte salt[], int log_rounds,
-                            int cdata[]) {
-        int rounds, i, j;
-        int clen = cdata.length;
-        byte ret[];
-
-        if (log_rounds < 4 || log_rounds > 30)
-            throw new IllegalArgumentException ("Bad number of rounds");
-        rounds = 1 << log_rounds;
-        if (salt.length != BCRYPT_SALT_LEN)
-            throw new IllegalArgumentException ("Bad salt length");
-
-        init_key();
-        ekskey(salt, password);
-        for (i = 0; i != rounds; i++) {
-            key(password);
-            key(salt);
-        }
-
-        for (i = 0; i < 64; i++) {
-            for (j = 0; j < (clen >> 1); j++)
-                encipher(cdata, j << 1);
-        }
-
-        ret = new byte[clen * 4];
-        for (i = 0, j = 0; i < clen; i++) {
-            ret[j++] = (byte)((cdata[i] >> 24) & 0xff);
-            ret[j++] = (byte)((cdata[i] >> 16) & 0xff);
-            ret[j++] = (byte)((cdata[i] >> 8) & 0xff);
-            ret[j++] = (byte)(cdata[i] & 0xff);
-        }
-        return ret;
-    }
-
-    /**
-     * Hash a password using the OpenBSD bcrypt scheme
-     * @param password	the password to hash
-     * @param salt	the salt to hash with (perhaps generated
-     * using BCrypt.gensalt)
-     * @return	the hashed password
-     */
-    public static String hashpw(String password, String salt) {
-        BCrypt B;
-        String real_salt;
-        byte passwordb[], saltb[], hashed[];
-        char minor = (char)0;
-        int rounds, off = 0;
-        StringBuffer rs = new StringBuffer();
-
-        if (salt.charAt(0) != '$' || salt.charAt(1) != '2')
-            throw new IllegalArgumentException ("Invalid salt version");
-        if (salt.charAt(2) == '$')
-            off = 3;
-        else {
-            minor = salt.charAt(2);
-            if (minor != 'a' || salt.charAt(3) != '$')
-                throw new IllegalArgumentException ("Invalid salt revision");
-            off = 4;
-        }
-
-        // Extract number of rounds
-        if (salt.charAt(off + 2) > '$')
-            throw new IllegalArgumentException ("Missing salt rounds");
-        rounds = Integer.parseInt(salt.substring(off, off + 2));
-
-        real_salt = salt.substring(off + 3, off + 25);
-        try {
-            passwordb = (password + (minor >= 'a' ? "\000" : "")).getBytes("UTF-8");
-        } catch (UnsupportedEncodingException uee) {
-            throw new AssertionError("UTF-8 is not supported");
-        }
-
-        saltb = decode_base64(real_salt, BCRYPT_SALT_LEN);
-
-        B = new BCrypt();
-        hashed = B.crypt_raw(passwordb, saltb, rounds,
-                (int[])bf_crypt_ciphertext.clone());
-
-        rs.append("$2");
-        if (minor >= 'a')
-            rs.append(minor);
-        rs.append("$");
-        if (rounds < 10)
-            rs.append("0");
-        if (rounds > 30) {
-            throw new IllegalArgumentException(
-                    "rounds exceeds maximum (30)");
-        }
-        rs.append(Integer.toString(rounds));
-        rs.append("$");
-        rs.append(encode_base64(saltb, saltb.length));
-        rs.append(encode_base64(hashed,
-                bf_crypt_ciphertext.length * 4 - 1));
-        return rs.toString();
-    }
-
-    /**
-     * Generate a salt for use with the BCrypt.hashpw() method
-     * @param log_rounds	the log2 of the number of rounds of
-     * hashing to apply - the work factor therefore increases as
-     * 2**log_rounds.
-     * @param random		an instance of SecureRandom to use
-     * @return	an encoded salt value
-     */
-    public static String gensalt(int log_rounds, SecureRandom random) {
-        StringBuffer rs = new StringBuffer();
-        byte rnd[] = new byte[BCRYPT_SALT_LEN];
-
-        random.nextBytes(rnd);
-
-        rs.append("$2a$");
-        if (log_rounds < 10)
-            rs.append("0");
-        if (log_rounds > 30) {
-            throw new IllegalArgumentException(
-                    "log_rounds exceeds maximum (30)");
-        }
-        rs.append(Integer.toString(log_rounds));
-        rs.append("$");
-        rs.append(encode_base64(rnd, rnd.length));
-        return rs.toString();
-    }
-
-    /**
-     * Generate a salt for use with the BCrypt.hashpw() method
-     * @param log_rounds	the log2 of the number of rounds of
-     * hashing to apply - the work factor therefore increases as
-     * 2**log_rounds.
-     * @return	an encoded salt value
-     */
-    public static String gensalt(int log_rounds) {
-        return gensalt(log_rounds, new SecureRandom());
-    }
-
-    /**
-     * Generate a salt for use with the BCrypt.hashpw() method,
-     * selecting a reasonable default for the number of hashing
-     * rounds to apply
-     * @return	an encoded salt value
-     */
-    public static String gensalt() {
-        return gensalt(GENSALT_DEFAULT_LOG2_ROUNDS);
-    }
-
-    /**
-     * Check that a plaintext password matches a previously hashed
-     * one
-     * @param plaintext	the plaintext password to verify
-     * @param hashed	the previously-hashed password
-     * @return	true if the passwords match, false otherwise
-     */
-    public static boolean checkpw(String plaintext, String hashed) {
-        byte hashed_bytes[];
-        byte try_bytes[];
-        try {
-            String try_pw = hashpw(plaintext, hashed);
-            hashed_bytes = hashed.getBytes("UTF-8");
-            try_bytes = try_pw.getBytes("UTF-8");
-        } catch (UnsupportedEncodingException uee) {
-            return false;
-        }
-        if (hashed_bytes.length != try_bytes.length)
-            return false;
-        byte ret = 0;
-        for (int i = 0; i < try_bytes.length; i++)
-            ret |= hashed_bytes[i] ^ try_bytes[i];
-        return ret == 0;
-    }
 }

src/test/java/com/hierynomus/sshj/userauth/keyprovider/bcrypt/BCryptTest.java

@@ -19,8 +19,6 @@ import org.junit.Test;
 import java.util.Arrays;
 
 import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
 
 /**
  * JUnit unit tests for BCrypt routines
@@ -28,168 +26,6 @@ import static org.junit.Assert.assertTrue;
  * @version 0.2
  */
 public class BCryptTest {
-    String[][] test_vectors = {
-            { "",
-                    "$2a$06$DCq7YPn5Rq63x1Lad4cll.",
-                    "$2a$06$DCq7YPn5Rq63x1Lad4cll.TV4S6ytwfsfvkgY8jIucDrjc8deX1s." },
-            { "",
-                    "$2a$08$HqWuK6/Ng6sg9gQzbLrgb.",
-                    "$2a$08$HqWuK6/Ng6sg9gQzbLrgb.Tl.ZHfXLhvt/SgVyWhQqgqcZ7ZuUtye" },
-            { "",
-                    "$2a$10$k1wbIrmNyFAPwPVPSVa/ze",
-                    "$2a$10$k1wbIrmNyFAPwPVPSVa/zecw2BCEnBwVS2GbrmgzxFUOqW9dk4TCW" },
-            { "",
-                    "$2a$12$k42ZFHFWqBp3vWli.nIn8u",
-                    "$2a$12$k42ZFHFWqBp3vWli.nIn8uYyIkbvYRvodzbfbK18SSsY.CsIQPlxO" },
-            { "a",
-                    "$2a$06$m0CrhHm10qJ3lXRY.5zDGO",
-                    "$2a$06$m0CrhHm10qJ3lXRY.5zDGO3rS2KdeeWLuGmsfGlMfOxih58VYVfxe" },
-            { "a",
-                    "$2a$08$cfcvVd2aQ8CMvoMpP2EBfe",
-                    "$2a$08$cfcvVd2aQ8CMvoMpP2EBfeodLEkkFJ9umNEfPD18.hUF62qqlC/V." },
-            { "a",
-                    "$2a$10$k87L/MF28Q673VKh8/cPi.",
-                    "$2a$10$k87L/MF28Q673VKh8/cPi.SUl7MU/rWuSiIDDFayrKk/1tBsSQu4u" },
-            { "a",
-                    "$2a$12$8NJH3LsPrANStV6XtBakCe",
-                    "$2a$12$8NJH3LsPrANStV6XtBakCez0cKHXVxmvxIlcz785vxAIZrihHZpeS" },
-            { "abc",
-                    "$2a$06$If6bvum7DFjUnE9p2uDeDu",
-                    "$2a$06$If6bvum7DFjUnE9p2uDeDu0YHzrHM6tf.iqN8.yx.jNN1ILEf7h0i" },
-            { "abc",
-                    "$2a$08$Ro0CUfOqk6cXEKf3dyaM7O",
-                    "$2a$08$Ro0CUfOqk6cXEKf3dyaM7OhSCvnwM9s4wIX9JeLapehKK5YdLxKcm" },
-            { "abc",
-                    "$2a$10$WvvTPHKwdBJ3uk0Z37EMR.",
-                    "$2a$10$WvvTPHKwdBJ3uk0Z37EMR.hLA2W6N9AEBhEgrAOljy2Ae5MtaSIUi" },
-            { "abc",
-                    "$2a$12$EXRkfkdmXn2gzds2SSitu.",
-                    "$2a$12$EXRkfkdmXn2gzds2SSitu.MW9.gAVqa9eLS1//RYtYCmB1eLHg.9q" },
-            { "abcdefghijklmnopqrstuvwxyz",
-                    "$2a$06$.rCVZVOThsIa97pEDOxvGu",
-                    "$2a$06$.rCVZVOThsIa97pEDOxvGuRRgzG64bvtJ0938xuqzv18d3ZpQhstC" },
-            { "abcdefghijklmnopqrstuvwxyz",
-                    "$2a$08$aTsUwsyowQuzRrDqFflhge",
-                    "$2a$08$aTsUwsyowQuzRrDqFflhgekJ8d9/7Z3GV3UcgvzQW3J5zMyrTvlz." },
-            { "abcdefghijklmnopqrstuvwxyz",
-                    "$2a$10$fVH8e28OQRj9tqiDXs1e1u",
-                    "$2a$10$fVH8e28OQRj9tqiDXs1e1uxpsjN0c7II7YPKXua2NAKYvM6iQk7dq" },
-            { "abcdefghijklmnopqrstuvwxyz",
-                    "$2a$12$D4G5f18o7aMMfwasBL7Gpu",
-                    "$2a$12$D4G5f18o7aMMfwasBL7GpuQWuP3pkrZrOAnqP.bmezbMng.QwJ/pG" },
-            { "~!@#$%^&*()      ~!@#$%^&*()PNBFRD",
-                    "$2a$06$fPIsBO8qRqkjj273rfaOI.",
-                    "$2a$06$fPIsBO8qRqkjj273rfaOI.HtSV9jLDpTbZn782DC6/t7qT67P6FfO" },
-            { "~!@#$%^&*()      ~!@#$%^&*()PNBFRD",
-                    "$2a$08$Eq2r4G/76Wv39MzSX262hu",
-                    "$2a$08$Eq2r4G/76Wv39MzSX262huzPz612MZiYHVUJe/OcOql2jo4.9UxTW" },
-            { "~!@#$%^&*()      ~!@#$%^&*()PNBFRD",
-                    "$2a$10$LgfYWkbzEvQ4JakH7rOvHe",
-                    "$2a$10$LgfYWkbzEvQ4JakH7rOvHe0y8pHKF9OaFgwUZ2q7W2FFZmZzJYlfS" },
-            { "~!@#$%^&*()      ~!@#$%^&*()PNBFRD",
-                    "$2a$12$WApznUOJfkEGSmYRfnkrPO",
-                    "$2a$12$WApznUOJfkEGSmYRfnkrPOr466oFDCaj4b6HY3EXGvfxm43seyhgC" },
-    };
-
-    /**
-     * Test method for 'BCrypt.hashpw(String, String)'
-     */
-    @Test
-    public void testHashpw() {
-        System.out.print("BCrypt.hashpw(): ");
-        for (int i = 0; i < test_vectors.length; i++) {
-            String plain = test_vectors[i][0];
-            String salt = test_vectors[i][1];
-            String expected = test_vectors[i][2];
-            String hashed = BCrypt.hashpw(plain, salt);
-            assertEquals(hashed, expected);
-            System.out.print(".");
-        }
-    }
-
-    /**
-     * Test method for 'BCrypt.gensalt(int)'
-     */
-    @Test
-    public void testGensaltInt() {
-        System.out.print("BCrypt.gensalt(log_rounds):");
-        for (int i = 4; i <= 12; i++) {
-            System.out.print(" " + i + ":");
-            for (int j = 0; j < test_vectors.length; j += 4) {
-                String plain = test_vectors[j][0];
-                String salt = BCrypt.gensalt(i);
-                String hashed1 = BCrypt.hashpw(plain, salt);
-                String hashed2 = BCrypt.hashpw(plain, hashed1);
-                assertEquals(hashed1, hashed2);
-                System.out.print(".");
-            }
-        }
-    }
-
-    /**
-     * Test method for 'BCrypt.gensalt()'
-     */
-    @Test
-    public void testGensalt() {
-        System.out.print("BCrypt.gensalt(): ");
-        for (int i = 0; i < test_vectors.length; i += 4) {
-            String plain = test_vectors[i][0];
-            String salt = BCrypt.gensalt();
-            String hashed1 = BCrypt.hashpw(plain, salt);
-            String hashed2 = BCrypt.hashpw(plain, hashed1);
-            assertEquals(hashed1, hashed2);
-            System.out.print(".");
-        }
-    }
-
-    /**
-     * Test method for 'BCrypt.checkpw(String, String)'
-     * expecting success
-     */
-    @Test
-    public void testCheckpw_success() {
-        System.out.print("BCrypt.checkpw w/ good passwords: ");
-        for (int i = 0; i < test_vectors.length; i++) {
-            String plain = test_vectors[i][0];
-            String expected = test_vectors[i][2];
-            assertTrue(BCrypt.checkpw(plain, expected));
-            System.out.print(".");
-        }
-    }
-
-    /**
-     * Test method for 'BCrypt.checkpw(String, String)'
-     * expecting failure
-     */
-    @Test
-    public void testCheckpw_failure() {
-        System.out.print("BCrypt.checkpw w/ bad passwords: ");
-        for (int i = 0; i < test_vectors.length; i++) {
-            int broken_index = (i + 4) % test_vectors.length;
-            String plain = test_vectors[i][0];
-            String expected = test_vectors[broken_index][2];
-            assertFalse(BCrypt.checkpw(plain, expected));
-            System.out.print(".");
-        }
-    }
-
-    /**
-     * Test for correct hashing of non-US-ASCII passwords
-     */
-    @Test
-    public void testInternationalChars() {
-        System.out.print("BCrypt.hashpw w/ international chars: ");
-        String pw1 = "\u2605\u2605\u2605\u2605\u2605\u2605\u2605\u2605";
-        String pw2 = "????????";
-
-        String h1 = BCrypt.hashpw(pw1, BCrypt.gensalt());
-        assertFalse(BCrypt.checkpw(pw2, h1));
-        System.out.print(".");
-
-        String h2 = BCrypt.hashpw(pw2, BCrypt.gensalt());
-        assertFalse(BCrypt.checkpw(pw1, h2));
-        System.out.print(".");
-    }
 
     private static class BCryptHashTV {
         private final byte[] pass;