add new token generation logic

Author: bprize15

src/main/java/org/mskcc/cbio/oncokb/domain/TokenKey.java

@@ -1,9 +1,14 @@
 package org.mskcc.cbio.oncokb.domain;
 
 import java.io.Serializable;
+import java.nio.ByteBuffer;
+import java.security.SecureRandom;
+import java.util.zip.CRC32;
 
 import org.mskcc.cbio.oncokb.domain.enumeration.TokenType;
 
+import io.seruco.encoding.base62.Base62;
+
 public class TokenKey implements Serializable {
     public static int TOKEN_CHAR_LENGTH = 30;
 
@@ -15,6 +20,32 @@ public class TokenKey implements Serializable {
 
     private String checksum;
 
+    public static TokenKey generate(TokenType type) {
+        TokenKey tokenKey = new TokenKey();
+        tokenKey.setTokenType(type);
+        
+        Base62 base62 = Base62.createInstance();
+        SecureRandom secureRandom = new SecureRandom();
+
+        byte[] bytes = new byte[24];
+        secureRandom.nextBytes(bytes);
+        String token = new String(base62.encode(bytes));
+        tokenKey.setToken(token);
+
+        CRC32 crc32 = new CRC32();
+        crc32.update(bytes);
+        ByteBuffer buffer = ByteBuffer.allocate(Long.BYTES);
+        buffer.putLong(crc32.getValue());
+        String checksum = new String(base62.encode(buffer.array()));
+        tokenKey.setChecksum(checksum.substring(checksum.length() - TokenKey.CHECKSUM_CHAR_LENGTH));
+
+        return tokenKey;
+    }
+
+    public boolean validateChecksum() {
+        return false;
+    }
+
     public TokenType getTokenType() {
         return tokenType;
     }

src/main/java/org/mskcc/cbio/oncokb/security/uuid/TokenProvider.java

@@ -2,7 +2,9 @@
 
 import org.mskcc.cbio.oncokb.domain.Authority;
 import org.mskcc.cbio.oncokb.domain.Token;
+import org.mskcc.cbio.oncokb.domain.TokenKey;
 import org.mskcc.cbio.oncokb.domain.User;
+import org.mskcc.cbio.oncokb.domain.enumeration.TokenType;
 import org.mskcc.cbio.oncokb.repository.UserRepository;
 import org.mskcc.cbio.oncokb.security.AuthoritiesConstants;
 import org.mskcc.cbio.oncokb.security.SecurityUtils;
@@ -74,6 +76,7 @@ private Token getNewToken(Set<Authority> authorities, Optional<Instant> definedE
             token.setExpiration(expirationTime);
         }
         token.setToken(UUID.randomUUID());
+        token.setNewToken(TokenKey.generate(TokenType.USER));
         return token;
     }