Hi All,

I am facing one issue since two weeks .The issue is i am not able to authenticate the amazon s3 Rest  request properly and getting the following error.

Error:The request signature we calculated does not match the signature you provided.Check your key and signing method.

Follwoing is my code:

String dateString = Datetime.now().formatGmt('EEE, dd MMM yyyy HH:mm:ss Z');
system.debug('=========='+dateString);
string stringToSign = 'GET\n\n\n'+dateString';
Blob mac = Crypto.generateMac('hmacSHA1', Blob.valueOf(stringToSign), Blob.valueOf('xxxxxxxx'));
stringToSign = EncodingUtil.base64Encode(mac);
//stringToSign = EncodingUtil.urlEncode(stringToSign, 'UTF-8');
httpRequest con = new HttpRequest();
system.debug('**********'+stringToSign);
con.setHeader('Authorization', 'AWS xxxxxx:'+stringToSign);
con.setEndPoint('https://s3.amazonaws.com');
con.setHeader('Host','xxxxx.s3.amazonaws.com');
system.debug('====date format'+dateString);
con.setHeader('Date',dateString);
//con.setHeader('Content-Type','application/xml');
con.setMethod('GET');
Http http = new Http();
HTTPResponse res = http.send(con);
system.debug('========'+res.getBody());

Can any one please help me out on this.

Thanx in advance.