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

Stringsha1ByString(String str)
SHA1 digest 
try {
    if (isBlank(str)) {
        return null;
    MessageDigest md = java.security.MessageDigest.getInstance("SHA-1");
    md.update(str.getBytes("UTF-8"));
    byte tmp[] = md.digest();
    StringBuilder sb = new StringBuilder();
...
byte[]SHA1Checksum(String filename)
Calculate a SHA1 checksum of a file 
InputStream fis = new FileInputStream(filename);
byte[] buffer = new byte[1024];
MessageDigest complete = MessageDigest.getInstance("SHA1");
int numRead;
while ((numRead = fis.read(buffer)) != -1) {
    complete.update(buffer, 0, numRead);
fis.close();
...
byte[]sha1Digest(byte[] bytes)
sha Digest 
return digest(SHA1_ALGORITHM_NAME, bytes);
byte[]sha1Digest(byte[] bytes)
sha Digest 
MessageDigest digest = MessageDigest.getInstance("SHA-1");
digest.update(bytes);
return digest.digest();
byte[]sha1Digest(final InputStream data)
sha Digest 
MessageDigest digest = getSHA1MessageDigest();
updateMessageDigest(digest, data);
return digest.digest();
byte[]sha1Digest(String src)
sha Digest 
try {
    MessageDigest md = MessageDigest.getInstance("SHA-1");
    return md.digest(src.getBytes("UTF8"));
} catch (Exception e) {
    return null;
Stringsha1DigestAsHex(String data)
Returns the SHA1 of the provided data 
byte[] dataBytes = getDigest("SHA").digest(data.getBytes(UTF8_CHARSET));
return new String(encodeHex(dataBytes));
byte[]sha1Encode(byte[] content)
sha Encode 
MessageDigest md = MessageDigest.getInstance("SHA");
byte[] mdRes = md.digest(content);
return mdRes;
StringSHA1Encode(String sourceString)
SHA Encode 
String resultString = null;
try {
    resultString = new String(sourceString);
    MessageDigest md = MessageDigest.getInstance("SHA-1");
    resultString = byte2hexString(md.digest(resultString.getBytes()));
} catch (Exception ex) {
return resultString;
...
MessageDigestsha1Hash()
sha Hash 
return MessageDigest.getInstance("SHA-1");