RM-4527: Add to CLI readme that only Estonian personal code can be used only

Author: Olesja Aarma

cdoc2-cli/README.md

@@ -121,14 +121,18 @@ Key and label can be safely stored in a password manager.
 
 ### Encryption with Smart ID
 
+Current encryption/decryption implementation of cdoc2 container with Smart ID supports only Estonian
+personal ID codes.
+
 ```
 java -jar target/cdoc2-cli-*.jar create --smart-id=38001085718 -f /tmp/smartid.cdoc README.md
 ```
 
 Multiple ID codes are allowed to be sent for encryption:
 
 ```
-java -jar target/cdoc2-cli-*.jar create -sid=38001085718 -sid=47101010033 -f /tmp/smartid.cdoc README.md
+java -jar target/cdoc2-cli-*.jar create -sid=38001085718 -sid=47101010033 \
+ -f /tmp/smartid.cdoc README.md
 ```
 
 Key shares or Smart-ID properties can be sent externally by adding following options (the same 
@@ -143,14 +147,18 @@ and/or
 
 ### Encryption with Mobile ID
 
+Current encryption/decryption implementation of cdoc2 container with Mobile ID supports only 
+Estonian personal ID codes.
+
 ```
 java -jar target/cdoc2-cli-*.jar create --mobile-id=51307149560 -f /tmp/mobileid.cdoc README.md
 ```
 
 Multiple ID codes are allowed to be sent for encryption:
 
 ```
-java -jar target/cdoc2-cli-*.jar create -mid=51307149560 -mid=60001017869 -f /tmp/mobileid.cdoc README.md
+java -jar target/cdoc2-cli-*.jar create -mid=51307149560 -mid=60001017869 \
+ -f /tmp/mobileid.cdoc README.md
 ```
 
 Key shares or Mobile-ID properties can be sent externally by adding following options (the same
@@ -173,16 +181,17 @@ To decrypt:
 java -jar target/cdoc2-cli-*.jar decrypt --file /tmp/mydoc.cdoc -k keys/bob.pem --output /tmp
 ```
 
-or with Smart-ID:
+or with Smart-ID for Estonian personal ID code:
 
 ```
 java -jar target/cdoc2-cli-*.jar decrypt -sid=38001085718 -f /tmp/smartid.cdoc --output /tmp
 ```
 
-or with Mobile-ID:
+or with Mobile-ID for Estonian personal ID code and Estonian phone number with country code `+372`:
 
 ```
-java -jar target/cdoc2-cli-*.jar decrypt -mid=51307149560  -mid-phone=+37269930366 -f /tmp/mobileid.cdoc --output /tmp
+java -jar target/cdoc2-cli-*.jar decrypt -mid=51307149560  -mid-phone=+37269930366 \
+ -f /tmp/mobileid.cdoc --output /tmp
 ```
 
 ### Decrypting with server scenario

cdoc2-cli/src/main/java/ee/cyber/cdoc2/cli/util/CDocDecryptionHelper.java

@@ -129,6 +129,11 @@ public static DecryptionKeyMaterial getDecryptionKeyMaterial(
         return decryptionKm;
     }
 
+    /**
+     * @param idCode estonian national identity code
+     * @param cdocFile cdoc2 file decrypted
+     * @return DecryptionKeyMaterial object
+     */
     private static DecryptionKeyMaterial getSidDecryptionKeyMaterial(String idCode, File cdocFile) {
         AuthenticationIdentifier authIdentifier = AuthenticationIdentifier.forKeyShares(
             createSemanticsIdentifier(idCode), AuthenticationIdentifier.AuthenticationType.SID
@@ -141,18 +146,16 @@ private static DecryptionKeyMaterial getSidDecryptionKeyMaterial(String idCode,
     }
 
     /**
-     *
      * @param idCode estonian national identity code
      * @param phoneNumber user phone number international format +372...
      * @param cdocFile cdoc2 file decrypted
-     * @return
+     * @return DecryptionKeyMaterial object
      */
     private static DecryptionKeyMaterial getMidDecryptionKeyMaterial(
         String idCode,
         String phoneNumber,
         File cdocFile
     ) {
-
         AuthenticationIdentifier authIdentifier = AuthenticationIdentifier.forMidDecryption(
             createSemanticsIdentifier(idCode),
             getValidatedPhoneNumber(phoneNumber)