Client-request/response processing

[g2flyer]

Description
Encryption/decryption, encoding/decoding and validation of client requests and responses

• client-sdk
  • protobuf
    • basic messages
    • response object
  • crypto
    • signature (see also Change enclave signature to be over proposal rather only args #460)
    • encryption (-> Enable message encryption and chaincode request message consistency check #516)
• peer cli
  • utility to use client-sdk to do actual work and corresponding inclusion in wrapper script (PR Peer cli assist for client request/response processing #492)
  • response object
• ecc[_enclave]
  • protobuf
    • basic messages
    • missing fields, e.g., enclave-id (other than crypto, see below)
    • response object
  • crypto
    • signature (see also Change enclave signature to be over proposal rather only args #460)
    • encryption (-> Enable message encryption and chaincode request message consistency check #516)

Link to feature or bug

Link to dependent issues

[g2flyer]

ass discussed in #516, move this to FPC 1.1