Merge branch 'development' into development-restricted

ChangeLog

@@ -49,10 +49,35 @@ Features
      MBEDTLS_CMAC_ALT). Submitted by Steve Cooreman, Silicon Labs.
    * Add support for alternative implementations of GCM, selected by the
      configuration flag MBEDTLS_GCM_ALT.
+   * Add support for alternative implementations for ECDSA, controlled by new
+     configuration flags MBEDTLS_ECDSA_SIGN_ALT, MBEDTLS_ECDSA_VERIFY_ALT and
+     MBEDTLS_ECDSDA_GENKEY_AT in config.h.
+     The following functions from the ECDSA module can be replaced
+     with alternative implementation:
+     mbedtls_ecdsa_sign(), mbedtls_ecdsa_verify() and mbedtls_ecdsa_genkey().
+   * Add support for alternative implementation for ECDH, controlled by new
+     configuration flags MBEDTLS_ECDH_COMPUTE_SHARED_ALT and
+     MBEDTLS_ECDH_GEN_PUBLIC_ALT in config.h.
+     The following functions from the ECDH module can be replaced
+     with an alternative implementation:
+     mbedtls_ecdh_gen_public() and mbedtls_ecdh_compute_shared().
 
 New deprecations
    * Deprecate usage of RSA primitives with non-matching key-type
      (e.g., signing with a public key).
+   * Direct manipulation of structure fields of RSA contexts is deprecated.
+     Users are advised to use the extended RSA API instead.
+
+API Changes
+   * Extend RSA interface by multiple functions allowing structure-
+     independent setup and export of RSA contexts. Most notably,
+     mbedtls_rsa_import and mbedtls_rsa_complete are introduced for setting
+     up RSA contexts from partial key material and having them completed to the
+     needs of the implementation automatically. This allows to setup private RSA
+     contexts from keys consisting of N,D,E only, even if P,Q are needed for the
+     purpose or CRT and/or blinding.
+   * The configuration option MBEDTLS_RSA_ALT can be used to define alternative
+     implementations of the RSA interface declared in rsa.h.
 
 Bugfix
    * Fix ssl_parse_record_header() to silently discard invalid DTLS records
@@ -108,6 +133,10 @@ Changes
    * Extend cert_write example program by options to set the CRT version
      and the message digest. Further, allow enabling/disabling of authority
      identifier, subject identifier and basic constraints extensions.
+   * Only check for necessary RSA structure fields in `mbedtls_rsa_private`. In
+     particular, don't require P,Q if neither CRT nor blinding are
+     used. Reported and fix proposed independently by satur9nine and sliai
+     on GitHub.
    * Only run AES-192 self-test if AES-192 is available. Fixes #963.
 
 = mbed TLS 2.6.0 branch released 2017-08-10