BIP 75: Out of Band Address Exchange using Payment Protocol Encryption #357

- Removed Requestor/Responder definitions
- Seperated ECDH secret point generation and AES-256 (CBC Mode) setup from individual steps (listed twice) and created it's own section
- Added InvoiceRequest Validation section

- Add Message Interaction Details + new mimetypes

- Make Abstract more readable
- Update Sender definition and acronym descriptions
- Added comments to ReturnPaymentRequest definition
- Bold ECDH and AES Setup notes and added "(see below)" for reference

use same email for voisine as in other BIPs

- Update InvoiceRequest to include nonce
- Remove ephemeral_public_key from ReturnPaymentRequest
- Update message validation and nonce usage in processes

added some details, fix typo

- Update InvoiceRequest notification_url definition to use SHOULD instead of MAY
- Capitalize MUST, SHOULD, etc.
- Update InvoiceRequest Message Creation steps to specifically define behavior for empty amount or amount out of bounds
- Add implementation section with references to Addressimo reference Store & Forward server and a client implementation in functest_ir.py
- Add flow diagrams for BIP70 extension and moble-to-mobile example with store and forward service

Added example use case.

- Add 2 new use cases and add Wallet Name to the Address Book section of optional ways to add entries to an address book

- Change ReturnPaymentRequest message name to EncryptedPaymentRequest
- Add Payment Request (with Store & Forward server) use-case documentation
- Add initial public key retrieval ideas

added "the identity of" to the first bullet of the abstract.

changed Justin's email back to @netki.com

changed justin's email back to @netkic.om

editied Abstract

Adding allow for store and forward servers as a way to server payment protocol

Asking matt to update use case 3 to include other mods made for store and forward servers.

- Seperate Process sections into regular and encrypted InvoiceRequest processes and flow diagrams

Request Matt to update use case 3

Update to add 3rd motivation

Encrypted payment messages, other tweaks

- Add ephemeral_public_key and requires_payment_message fields to EncryptedPaymentRequest + updated descriptions
- Update EncryptedPayment and EncryptedPaymentACK message descriptions to use ECDH-derived key for signature instead of each side's public key
- Slim down message content-types
- Add EncryptedPayment and EncryptedPaymentACK creation detail steps
- Add updated paymentrequest.proto to bip-ir/ directory
- Add additional flow diagrams for various mobile-to-mobile / Store & Forward scenarios

- Change No EncryptedPayment Required title
- Fix BIP70 link format in References

Reworked message definitions, other details

- Add nonce to EncryptedPaymentRequest, EncryptedPayment and EncryptedPaymentACK
- Update ECDH instruction to allow for the current message instead of an InvoiceRequest to contain the nonce
- Updated paymentrequest.proto with BIP definition changes

Made public keys required, updated steps

- Also, fix ** used for bold and replace with <b></b>

Renamed to BIP75, added extensions to BIP70 payment details

- Added bolding to replace_by_fee

Extended BIP70 fields, added BIP number

- Add DER encoding requirement for EC public keys and ECC signatures
- Add SHA-256 hashing requirement for ECC signatures
- Add FIPS 180-4 SHS link

 * Fixing a few extra closing `b` tags and converting others to wiki bold syntax.
 * Linking "see below" and "see above" items to the actual section of the BIP.
 * Consistent capitalization of "Bitcoin".
 * "requester" => "requester* (more common outside of legal writing)
 * "concious" => "conscious"
 * "Foward" => "Forward"
 * "Satoshis" => "satoshis" (as unit of bitcoin, not the name of creator)
 * Removing unnecessary </img> which can actually cause problems.
 * Adding required `alt` attribute to img tags.
 * Fix wrapping of long lines (some were wrapped at 112 chars) - No effect on final rendering users see.

Format comment to fit style of previous comments

Formatting improvements to BIP-75

Format Comment To Match Previous Style

Removed BIP70 extensions