IContentSecurityPolicyManager Used for Content Security Policy manipulations
ICredentialsManager Store and retrieve credentials for external services
ICrypto Class Crypto provides a high-level encryption layer using AES-CBC. If no key has been provided it will use the secret defined in config.php as key. Additionally the message will be HMAC'd.
IHasher Class Hasher provides some basic hashing functions. Furthermore, it supports legacy hashes used by previous versions of ownCloud and helps migrating those hashes to newer ones.
ISecureRandom Class SecureRandom provides a wrapper around the random_int function to generate secure random strings. For PHP 7 the native CSPRNG is used, older versions do use a fallback.


StringUtils Class StringUtils