import com.jcraft.jsch.HASH; //导入依赖的package包/类
public static String getJschFingerprint(byte[] keyBlob) throws Exception {
    final String[] fingerPrintChars = {
            "0","1","2","3","4","5","6","7","8","9", "a","b","c","d","e","f"
    };
    HASH hash = new MD5();
    hash.init();
    hash.update(keyBlob, 0, keyBlob.length);
    byte[] foo = hash.digest();
    StringBuffer sb = new StringBuffer();
    int bar;
    for(int i = 0; i < foo.length; i++){
        bar = foo[i]&0xff;
        sb.append(fingerPrintChars[(bar>>>4)&0xf]);
        sb.append(fingerPrintChars[(bar)&0xf]);
        if(i + 1 < foo.length) {
            sb.append(":");
        }
    }
    return sb.toString();
}
 

import com.jcraft.jsch.HASH; //导入依赖的package包/类
public static String getFingerPrint(final HASH hash, final byte[] data)
{
    checkNotNull(hash);
    checkNotNull(data);
    
    try
    {
        hash.init();
        hash.update(data, 0, data.length);
        
        byte[] digest = hash.digest();
        
        StringBuffer sb = new StringBuffer();
        int offset;
        
        for (int i = 0; i < digest.length; i++)
        {
            offset = digest[i] & 0xff;
            sb.append(CHARS[(offset >>> 4) & 0xf]);
            sb.append(CHARS[(offset) & 0xf]);
            
            if (i + 1 < digest.length)
            {
                sb.append(":");
            }
        }
        return sb.toString();
    }
    catch (Exception exception)
    {
        return "???";
    }
}
 

import com.jcraft.jsch.HASH; //导入依赖的package包/类
public static HASH md5()
{
    return new com.jcraft.jsch.jce.MD5();
}