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Generate HMAC using SHA256 in Scala
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| import javax.crypto.Mac | |
| import javax.crypto.spec.SecretKeySpec | |
| Object HMACgen { | |
| def generateHMAC(sharedSecret: String, preHashString: String): String = { | |
| val secret = new SecretKeySpec(sharedSecret.getBytes, "SHA256") //Crypto Funs : 'SHA256' , 'HmacSHA1' | |
| val mac = Mac.getInstance("SHA256") | |
| mac.init(secret) | |
| val hashString: Array[Byte] = mac.doFinal(preHashString.getBytes) | |
| new String(hashString.map(_.toChar)) | |
| } | |
| } |
is it possible to generateHMAC without a sharedSecret?
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The code in line 8
val mac = Mac.getInstance("SHA256")does not work for me, which will raise an error like:
Exception in thread "main" java.security.NoSuchAlgorithmException: Algorithm SHA256 not available at javax.crypto.Mac.getInstance(Mac.java:181)The feasible algorithm specification for me is like:
val mac = Mac.getInstance("HmacSHA256")