Android generating a hash string sha256

Question

I'm trying to encrypt a url-request, username and password, then post it to a webpage.

But for some reason eclipse is saying the syntax is wrong, what am I doing wrong? It is the bit at the bottom where it says md.update that is causing errors.

Here's my code so far:

private static final String apiKey = "38m8nyev284nddci49940303094"; 
private static final String apiUser = "esdt34ds"; 

long unixTimeStamp = System.currentTimeMillis() / 1000L;

String newFeedRequest = "1.0/evoStructure?timestamp=" + unixTimeStamp;
String fixturesFeedURL = "https://secure.website.com/_services/api/" + newFeedRequest;

MessageDigest md = MessageDigest.getInstance("SHA-256");


md.update(fixturesFeedURL.getBytes("UTF-8"),apiKey.getBytes("UTF-8"),apiUser.getBytes("UTF-8")); // Change this to "UTF-16" if needed
byte[] digest = md.digest();

Here is the error I am getting:

Multiple markers at this line

Syntax error, insert "Type VariableDeclaratorId" to complete FormalParameterList

Syntax error on token "update", Identifier expected after this token

Syntax error on tokens, AnnotationName expected instead

Syntax error on token ",", @ expected

Syntax error on token ",", @ expected

Would probably help if you say what the error is you're receiving. — Tim
– Tim, Commented Apr 16, 2012 at 22:01

user931366 · Accepted Answer · 2012-04-16 22:10:23Z

1

That's a cryptic error. But I'd say your not using correct parameters for update()

http://developer.android.com/reference/java/security/MessageDigest.html

The API shows update(ByteBuffer), update(byte[], int, int), update(byte[]), update(byte). Don't see any that take (byte[], byte[], byte[]) try calling

md.update(fixturesFeedURL.getBytes("UTF-8"));

md.update(apiKey.getBytes("UTF-8"));

md.update(apiUser.getBytes("UTF-8"));

instead

answered Apr 16, 2012 at 22:10

user931366

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