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import java.security.InvalidKeyException
import java.security.NoSuchAlgorithmException
import javax.crypto.Mac
import javax.crypto.spec.SecretKeySpec
import java.util.Base64
fun computeHmacsha512(plainText: String, secretKey: String): String {
val hmacSha512 = Mac.getInstance("HmacSHA512")
val secretKeySpec = SecretKeySpec(secretKey.toByteArray(), "HmacSHA512")
hmacSha512.init(secretKeySpec)
val hash = hmacSha512.doFinal(plainText.toByteArray())
return Base64.getEncoder().encodeToString(hash)
}
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