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Execute HMAC SHA1 algorithm to encode string in binary
Hello,
I have a requirement of executing HMAC SHA1 algorithm to encode a string in binary. Could anybody please tell me how to convert string to binary using HMAC SHA1 algorithm?
Thanks!
Divya
Accepted Solution
Posted: 5 years ago
Atos Syntel
Atos Syntel
NL
Hello,
I have achieved this writing a function as below.
byte[] byteHMAC = null;
String result = null;
Charset ascii = Charset.forName("US-ASCII");
try
{
Mac mac = Mac.getInstance("HmacSHA1");
SecretKeySpec spec;
spec = new SecretKeySpec(Base64Util.decode(tokenSecret.getBytes(ascii)), "HmacSHA1");
mac.init(spec);
byteHMAC = mac.doFinal(baseString.getBytes(ascii));
result = new String(Base64Util.encode(byteHMAC));
}
catch (InvalidKeyException e)
{
e.printStackTrace();
}
catch (NoSuchAlgorithmException ignore)
{
// should never happen
}
return result;
** here, baseString and tokenSecret are the parameters for the function
Posted: 5 years ago
Cognizant Technology Limited
Cognizant Technology Limited
IN
Hi Divya,
Could you please refer the below post which shows the algorithm calculation and implementation.
https://stackoverflow.com/questions/7124735/hmac-sha256-algorithm-for-signature-calculation
Accepted Solution
Posted: 5 years ago
Atos Syntel
Atos Syntel
NL
Hello,
I have achieved this writing a function as below.
byte[] byteHMAC = null;
String result = null;
Charset ascii = Charset.forName("US-ASCII");
try
{
Mac mac = Mac.getInstance("HmacSHA1");
SecretKeySpec spec;
spec = new SecretKeySpec(Base64Util.decode(tokenSecret.getBytes(ascii)), "HmacSHA1");
mac.init(spec);
byteHMAC = mac.doFinal(baseString.getBytes(ascii));
result = new String(Base64Util.encode(byteHMAC));
}
catch (InvalidKeyException e)
{
e.printStackTrace();
}
catch (NoSuchAlgorithmException ignore)
{
// should never happen
}
return result;
** here, baseString and tokenSecret are the parameters for the function