Deprecation: #84407 - RSA public key generation without "Content-Type: application/json"

See Issue #84407

Description

The default response of the RsaPublicKeyGenerationController eID script was broken since it claimed to return a JSON response but in fact returned a simple string containing a concatenation of public key modulus and exponent.

The eID script now returns a proper JSON response if requested with the Content-Type: application/json HTTP header:

{
    "publicKeyModulus": "ABC...",
    "exponent": "10..."
}

Impact

Extensions performing custom AJAX requests against the RsaPublicKeyGenerationController eID script without the Content-Type: application/json HTTP header will trigger a deprecation warning in v9 and an error response in v10.

Affected Installations

Sites which do not use the default RSA encryption JavaScript to handle form value encryption.

Migration

The default RSA encryption JavaScript has been migrated, custom implementations must add the Content-Type: application/json HTTP header to AJAX requests and parse the JSON response accordingly.