- implemented RSA, only signing and verifying esma_pkcs1 padded

- removed gmp-helper: chunk_to_mpz is now done with gmp functions, prime generation in prime-pool
- added prime-pool (needs priority fix)
- proof of concept RSA authentication
- mpz uses LEAK_DETECTIVE
- configuration-manager supports rsa keys

Source/charon/transforms/crypters/crypter.h

@@ -57,6 +57,9 @@ typedef struct crypter_t crypter_t;
 /**
  * @brief Generic interface for symmetric encryption algorithms.
  * 
+ * @todo Distinguish between block_size and key_size, since not all
+ * algorithms use key_size == block_size (e.g. 3DES).
+ * 
  * @ingroup crypters
  */
 struct crypter_t {