Merge branch 'main' of...

Merge branch 'main' of https://gitlab.elektrotechnik.hs-augsburg.de/hackenbs/science-meets-industry-2021-students

tasks/optional_store_rsa_key.md

@@ -29,7 +29,7 @@ It needs a while to generate a RSA-2k key pair. You can generate it once and sto
 
    ```c
    mbedtls_rsa_context rsactx;
-   mbedtls_rsa_init(rsactx, MBEDTLS_RSA_PKCS_V15, 0);
+   mbedtls_rsa_init(rsactx, MBEDTLS_RSA_PKCS_V21, 0);
    MBED_ASSERT(mbedtls_rsa_import_raw(
        rsactx,
        statickey_n,