Rename method & make it private

Author: zguesmi

src/main/java/com/iexec/worker/sms/SmsService.java

@@ -34,7 +34,7 @@ public SmsService(CredentialsService credentialsService, SmsClient smsClient) {
     @Retryable(value = FeignException.class)
     public Optional<TaskSecrets> fetchTaskSecrets(ContributionAuthorization contributionAuth) {
         String chainTaskId = contributionAuth.getChainTaskId();
-        String workerSignature = getSmsAuthorizationString(contributionAuth);
+        String workerSignature = getAuthorizationString(contributionAuth);
         ResponseEntity<SmsSecretResponse> response = smsClient.getUnTeeSecrets(workerSignature, contributionAuth);
         if (!response.getStatusCode().is2xxSuccessful()) {
             return Optional.empty();
@@ -103,7 +103,7 @@ public void saveSecrets(String chainTaskId,
 
     @Retryable(value = FeignException.class)
     public String createTeeSession(ContributionAuthorization contributionAuth) {
-        String workerSignature = getSmsAuthorizationString(contributionAuth);
+        String workerSignature = getAuthorizationString(contributionAuth);
         ResponseEntity<String> response = smsClient.createTeeSession(workerSignature, contributionAuth);
         return response.getStatusCode().is2xxSuccessful() ? response.getBody() : "";
     }
@@ -115,7 +115,7 @@ private String createTeeSession(FeignException e, ContributionAuthorization cont
         return "";
     }
 
-    public String getSmsAuthorizationString(ContributionAuthorization contributionAuth) {
+    private String getAuthorizationString(ContributionAuthorization contributionAuth) {
         String challenge = contributionAuth.getHash();
         return credentialsService.hashAndSignMessage(challenge).getValue();
     }