Java Utililty Methods MD5 Sum

List of utility methods to do MD5 Sum

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Description

The list of methods to do MD5 Sum are organized into topic(s).

Method

Stringmd5sum(InputStream file)
mdsum 
InputStream in = file;
try {
    MessageDigest digest = MessageDigest.getInstance("MD5");
    byte[] buffer = new byte[8192];
    int read = 0;
    while ((read = in.read(buffer)) > 0) {
        digest.update(buffer, 0, read);
    byte[] md5sum = digest.digest();
    BigInteger bigInt = new BigInteger(1, md5sum);
    return bigInt.toString(16);
} catch (Exception e) {
    throw new RuntimeException("Unable to process file for MD5", e);
} finally {
    if (in != null)
        try {
            in.close();
        } catch (IOException e) {
            throw new RuntimeException("Unable to close input stream for MD5 calculation", e);
Stringmd5sum(InputStream in)
mdsum 
in.reset();
MessageDigest md = MessageDigest.getInstance("MD5");
byte[] dataBytes = new byte[1024];
int nread;
while ((nread = in.read(dataBytes)) != -1) {
    md.update(dataBytes, 0, nread);
return getMd5String(md);
...
byte[]md5sum(String data)
mdsum 
return MessageDigest.getInstance("MD5").digest(data.getBytes());
Stringmd5sum(String input)
Return the MD5 checksum of the given string 
MessageDigest digest = null;
try {
    digest = MessageDigest.getInstance("MD5");
} catch (NoSuchAlgorithmException ex) {
    throw new RuntimeException("Unable to compute md5sum for string", ex);
assert (digest != null);
digest.update(input.getBytes());
...
Stringmd5sum(String inString)
Calculate the MD5 checksum of the input string 
MessageDigest algorithm = null;
try {
    algorithm = MessageDigest.getInstance("MD5");
} catch (NoSuchAlgorithmException nsae) {
    System.err.println("Cannot find digest algorithm");
    return null;
byte[] defaultBytes = inString.getBytes();
...
Stringmd5sum(String message)
Generates an MD5 sum for the given string. 
MessageDigest md5;
byte[] md5sumBytes;
String sum = null;
try {
    md5 = MessageDigest.getInstance(encodeAlgorithm);
    md5sumBytes = md5.digest(message.getBytes(characterEncoding));
    sum = (new BigInteger(1, md5sumBytes)).toString(md5Base);
} catch (NoSuchAlgorithmException e) {
...
Stringmd5Sum(String msg)
md Sum 
MessageDigest md = MessageDigest.getInstance("MD5");
md.update(msg.getBytes(), 0, msg.length());
return new String(byteArrayToHexString(md.digest()));
Stringmd5sum(String str)
mdsum 
try {
    return md5sum(str.getBytes("UTF-8"));
} catch (UnsupportedEncodingException uee) {
    return null;
Stringmd5sum(String string)
mdsum 
return calcHash(string, "MD5");
Stringmd5sum(String url)
mdsum 
if (url == null)
    return "";
StringBuilder sb = new StringBuilder();
try {
    for (byte b : MessageDigest.getInstance("MD5").digest(url.getBytes("UTF-8")))
        sb.append(Integer.toHexString(0x100 | (b & 0xff)).substring(1));
} catch (NoSuchAlgorithmException e) {
    throw new RuntimeException(e);
...