Java Utililty Methods SHA1

List of utility methods to do SHA1

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Description

The list of methods to do SHA1 are organized into topic(s).

Method

Stringsha1hex(String source)
Returns a hex string representing the SHA-1 encoded source. 
return hexlate(digest("SHA-1", source));
Stringsha1Java(String password)
sha Java 
MessageDigest md;
byte[] sha1hash = new byte[40];
try {
    md = MessageDigest.getInstance("SHA-1");
    md.update(password.getBytes("iso-8859-1"), 0, password.length());
    sha1hash = md.digest();
} catch (Exception e) {
return convertToHex(sha1hash);
byte[]sha1Sum(byte[] ba)
This method is used to calculate key identifiers. 
byte[] digest = null;
MessageDigest md = null;
try {
    md = MessageDigest.getInstance("SHA-1");
    md.update(ba);
    digest = md.digest();
} catch (NoSuchAlgorithmException e) {
return digest;
byte[]sha1sum(byte[] data, Integer startIdxInc, Integer stopIdxExc)
shasum 
byte[] out;
MessageDigest md;
md = MessageDigest.getInstance("SHA-1");
out = md.digest(data);
if (startIdxInc != null && stopIdxExc != null) {
    out = Arrays.copyOfRange(out, startIdxInc, stopIdxExc);
return out;
...
Stringsha1sum(byte[] input, int length)
shasum 
try {
    MessageDigest sha1 = MessageDigest.getInstance("SHA1");
    sha1.update(input, 0, length);
    return getHex(sha1.digest());
} catch (NoSuchAlgorithmException e) {
    return null;
Stringsha1sum(File file)
shasum 
String localSha1Sum = null;
if (file.exists() && file.isFile() && file.canRead()) {
    DigestInputStream dis = null;
    try {
        MessageDigest md = MessageDigest.getInstance("SHA-1");
        dis = new DigestInputStream(new FileInputStream(file), md);
        dis.on(true);
        while (dis.read() != -1) {
...
Stringsha1sum(File file)
shasum 
InputStream in = new FileInputStream(file);
String cs = checksum("SHA-1", in);
in.close();
return cs;
byte[]SHA1Sum(final @Nonnull byte[] bytes)
SHA Sum 
return sha1.digest(bytes);
Stringsha1sum(final String data)
shasum 
final MessageDigest md;
try {
    md = MessageDigest.getInstance("SHA-1");
} catch (final NoSuchAlgorithmException ignored) {
    return data;
return byteArrayToHexString(md.digest(getBytesUtf8(data)));
Stringsha1sum(InputStream file)
shasum 
InputStream in = file;
try {
    MessageDigest digest = MessageDigest.getInstance("SHA1");
    byte[] buffer = new byte[8192];
    int read = 0;
    while ((read = in.read(buffer)) > 0) {
        digest.update(buffer, 0, read);
    byte[] sha1sum = digest.digest();
    BigInteger bigInt = new BigInteger(1, sha1sum);
    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);