Security
* Fix a bias in the generation of finite-field Diffie-Hellman-Merkle (DHM)
  private keys and of blinding values for DHM and elliptic curves (ECP)
  computations. Reported by FlorianF89 in #4245.

Add changelog entry for non-uniform MPI random generation
Add changelog entry for non-uniform MPI random generation

Fix #4245.

Signed-off-by: Gilles Peskine <f805f64266d288fc5467baa7be6cd0ff366f477b@arm.com>
