Which packages I should import to be able to use Crypto and encodeBase64URLSafeString?

Question

I am trying below Java code:

          byte[] data = Base64.getEncoder().encode((key + number + ts + role).getBytes("UTF-8"));    
          hash = Crypto.hmacSha256(data, secret.getBytes("UTF-8"));    
          String s = key + "." + number +"."+ ts +"."+ role + "." + Base64.getEncoder().encodeToString(hash);    
          result = Base64.encodeBase64URLSafeString(s.getBytes("UTF-8"));

But I don't know which package I should import to be able to use Crypto.hmacSha256. And I imported java.util.Base64; but it seems it doesn't have encodeBase64URLSafeString, where is this method?

You are probably looking for commons-codec library https://commons.apache.org/proper/commons-codec/apidocs/org/apache/commons/codec/binary/Base64.html#encodeBase64URLSafe(byte[]) — jmj, May 04 '17 at 00:20

score 1 · Accepted Answer · answered May 04 '17 at 00:24

1

You are looking for commons-codec library and this method https://commons.apache.org/proper/commons-codec/apidocs/org/apache/commons/codec/binary/Base64.html#encodeBase64URLSafe(byte[])

answered May 04 '17 at 00:24

jmj

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How could I import this? I tried import org.apache.commons.codec.binary.Base64, but I get an error "The import org.apache cannot be resolved" – spspli May 04 '17 at 00:32
You need to add it to your classpath – jmj May 04 '17 at 00:43
Thank you so much! – spspli May 04 '17 at 04:31
Do you know about Crypto.hmacSha256, is there also a external library for this one? – spspli May 04 '17 at 04:57
looks like you are trying to compute hash using SHA256 ? Java has built in API for that. You can use something like https://stackoverflow.com/questions/5531455/how-to-hash-some-string-with-sha256-in-java – jmj May 04 '17 at 05:19
Great! Thank you!! – spspli May 04 '17 at 16:08

Which packages I should import to be able to use Crypto and encodeBase64URLSafeString?

1 Answers1