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[taler-cashless2ecash] branch master updated: docs: add overview diagram
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gnunet |
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Subject: |
[taler-cashless2ecash] branch master updated: docs: add overview diagram, fix api spec, cleanup structure |
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Date: |
Wed, 20 Mar 2024 22:13:42 +0100 |
This is an automated email from the git hooks/post-receive script.
joel-haeberli pushed a commit to branch master
in repository cashless2ecash.
The following commit(s) were added to refs/heads/master by this push:
new 10d0648 docs: add overview diagram, fix api spec, cleanup structure
10d0648 is described below
commit 10d064835e8ed272a9ff09bf74ac371e19e2675b
Author: Joel-Haeberli <haebu@rubigen.ch>
AuthorDate: Wed Mar 20 22:13:35 2024 +0100
docs: add overview diagram, fix api spec, cleanup structure
---
.gitignore | 2 +
docs/content/architecture/c2ec.tex | 92 +++++++
docs/content/architecture/nonce2ecash.tex | 84 ------
docs/content/architecture/overview.tex | 16 +-
docs/content/architecture/terminal.tex | 8 -
docs/content/architecture/usecase.tex | 1 -
docs/content/{sysview => architecture}/wallee.tex | 10 +-
docs/content/architecture/wallet.tex | 1 -
docs/content/sysview/sysview.tex | 4 -
docs/content/sysview/taler.tex | 9 -
docs/pictures/diagrams/system_overview.png | Bin 0 -> 93245 bytes
docs/project.bib | 14 +
docs/thesis.pdf | Bin 812625 -> 1387923 bytes
docs/thesis.tex | 6 +-
nonce2ecash/pkg/db/provider.go | 1 +
specs/{api-nonce2ecash.rst => api-c2ec.rst} | 76 ++++--
specs/system_overview.odg | Bin 0 -> 26993 bytes
specs/system_overview.svg | 310 ++++++++++++++++++++++
18 files changed, 477 insertions(+), 157 deletions(-)
diff --git a/.gitignore b/.gitignore
index a2663d3..bcbd7bc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,6 +4,8 @@ infra/
LocalMakefile
+.~lock.*.odg#
+
*.png
!/docs/**/*.png
diff --git a/docs/content/architecture/c2ec.tex
b/docs/content/architecture/c2ec.tex
new file mode 100644
index 0000000..28b32c1
--- /dev/null
+++ b/docs/content/architecture/c2ec.tex
@@ -0,0 +1,92 @@
+\section{C2EC}
+
+The API of the C2EC (cashless2ecash) component mirrors the flow from the
creation of a C2EC mapping to the creation of the reserve. For the integration
into the Taler ecosystem additionally to the newly created API, the new
component must implement the Taler Wirewatch Gateway API \cite{} and the Taler
Bank Integration API.
+
+A specification of the API in yaml format can be found in
\autoref*{appendix-api-spec}.
+
+\subsection{The C2EC RESTful API}
+
+\subsubsection{Authentication}
+
+Terminals which authenticate against the C2EC API must provide their
respective access token. Therefore, they provide a \texttt{Authorization:
Bearer \$ACCESS\_TOKEN} header, where \texttt{\$ACCESS\_TOKEN} is a secret
authentication token configured by the exchange and must begin with the prefix
specified in RFC 8959 \cite{rfc8959}: \textit{secret-token}.
+
+\subsubsection{Configuration of C2EC}
+
+\begin{itemize}
+ \item \textbf{Method:} GET
+ \item \textbf{Endpoint:} /config
+ \item \textbf{Description:} Return the protocol version and configuration
information about the C2EC API.
+ \item \textbf{Response:} HTTP status code 200 OK. The exchange responds with
a \texttt{C2ECConfig} object.
+\end{itemize}
+
+\subsubsection{Withdrawing using C2EC}
+
+Withdrawals with a C2EC are based on withdrawal operations which register a
withdrawal identifier (nonce) at the C2EC component. The provider must first
create a unique identifier for the withdrawal operation (the
\texttt{WITHDRAWAL\_ID}) to interact with the withdrawal operation and
eventually withdraw using the wallet.
+
+\textbf{POST - withdrawal-operation}
+\begin{itemize}
+ \item \textbf{Method:} POST
+ \item \textbf{Endpoint:} /withdrawal-operation
+ \item \textbf{Description:} Initiate the withdrawal operation, identified by
the \texttt{WITHDRAWAL\_ID}.
+ \item \textbf{Request:} The request body contains a
\texttt{WithdrawRegistration} object.
+ \item \textbf{Response:} HTTP status code 204 No content, 400 Bad request,
or 500 Internal Server error.
+\end{itemize}
+
+\textbf{GET - withdrawal-operation by withdrawal-id}
+\begin{itemize}
+ \item \textbf{Method:} GET
+ \item \textbf{Endpoint:} /withdrawal-operation/\$WITHDRAWAL\_ID
+ \item \textbf{Description:} Query information about a withdrawal operation,
identified by the \texttt{WITHDRAWAL\_ID}.
+ \item \textbf{Response:} HTTP status code 200 OK or 404 Not found.
+\end{itemize}
+
+\textbf{POST - withdrawal-operation by withdrawal-id}
+\begin{itemize}
+ \item \textbf{Method:} POST
+ \item \textbf{Endpoint:} /withdrawal-operation/\$WITHDRAWAL\_ID
+ \item \textbf{Description:} Notifies C2EC about an executed payment for a
specific withdrawal.
+ \item \textbf{Request:} The request body contains a
\texttt{PaymentNotification} object.
+ \item \textbf{Response:} HTTP status code 204 No content, 400 Bad request,
404 Not found, or 500 Internal Server error.
+\end{itemize}
+
+\subsection{Taler Wirewatch Gateway API}
+The Taler Wirewatch Gateway \cite{taler-wirewatch-gateway-api} must be
implemented in order to capture incoming transactions and allow the withdrawal
of money. The specification of the Taler Wirewatch Gateway can be found in the
official Taler documentation \cite{taler-wirewatch-gateway-api}.
+
+The wirewatch gateway helps the Exchange communicate with the C2EC component
using a the API. It helps the Exchange to get guarantees, that a certain
transaction went through and that the reserve can be created and withdrawn.
This will help C2EC to capture the transaction of the Terminal Backend to the
Exchange's account and therefore allow the withdrawal by the customer.
Therefore the wirewatch gateway API is used in C2EC. When the wirewatch gateway
can get the proof, that a transaction [...]
+
+\subsection{Taler Bank Integration API}
+The Taler Bank Integration \cite{taler-bank-integration-api} must be
implemented in order to allow the Wallet to withdraw money using already
implemented flows. The wallet will use the implementation of the Bank
Integration API to withdraw. The documentation for the Bank Integration API can
also be found in the official Taler documentation.
+
+\subsection{The C2EC database}
+
+The database of the C2EC component must track two different aspects. The first
is the mapping of a nonce to a reserve public key to enable withdrawals and the
second aspect is the authentication of terminals allowing withdrawals owned by
terminal providers like \textit{Wallee}.
+
+\subsubsection{Terminal Provider}
+Table in \autoref{fig-erd-terminal-provider} describing providers of C2EC
compliant terminals. The name of the provider is important, because it decides
which flow shall be taken in order to attest the payment. For example will the
name \textit{Wallee} signal the terminal provider to
+
+\begin{figure}[h]
+ \centering
+
\includegraphics[width=0.7\textwidth]{pictures/database/table_terminal_provider.png}
+ \caption{Terminal Provider Table}
+ \label{fig-erd-terminal-provider}
+\end{figure}
+
+\subsubsection{Terminal}
+Table in \autoref{fig-erd-terminal} contains information about terminals of
providers. This includes the provider they belong to and an authentication
token, which is generated by the Exchange and allows authenticating the
terminal. A terminal belongs to one terminal provider.
+
+\begin{figure}[h]
+ \centering
+ \includegraphics[width=0.7\textwidth]{pictures/database/table_terminal.png}
+ \caption{Terminal Table}
+ \label{fig-erd-terminal}
+\end{figure}
+
+\subsubsection{Withdrawal}
+Table in \autoref{fig-erd-withdrawal} represents the withdrawal processes
initiated by terminals. This table therefore contains information about the
withdrawal like the amount, which terminal the withdrawal was initiated from
and which reserve public key is used to create a reserve in the Exchange.
+
+\begin{figure}[h]
+ \centering
+ \includegraphics[width=0.7\textwidth]{pictures/database/table_withdrawal.png}
+ \caption{Withdrawal Table}
+ \label{fig-erd-withdrawal}
+\end{figure}
diff --git a/docs/content/architecture/nonce2ecash.tex
b/docs/content/architecture/nonce2ecash.tex
deleted file mode 100644
index a4570ac..0000000
--- a/docs/content/architecture/nonce2ecash.tex
+++ /dev/null
@@ -1,84 +0,0 @@
-\section{nonce2ecash}
-
-The API of the nonce2ecash component mirrors the flow from the creation of a
nonce2ecash mapping to the creation of the reserve. Therefore three endpoints
are implemented.
-
-A specification of the API in yaml format can be found in
\autoref*{appendix-api-spec}.
-
-\subsection{The nonce2ecash RESTful API}
-
-\subsubsection{Authentication}
-
-Terminals which authenticate against the nonce2ecash API must provide their
respective access token. Therefore, they provide a \texttt{Authorization:
Bearer \$ACCESS\_TOKEN} header, where \texttt{\$ACCESS\_TOKEN} is a secret
authentication token configured by the exchange and must begin with the RFC
8959 \cite{rfc8959} prefix \textit{secret-token}.
-
-\subsubsection{Configuration of nonce2ecash}
-
-\begin{itemize}
- \item \textbf{Method:} GET
- \item \textbf{Endpoint:} /config
- \item \textbf{Description:} Return the protocol version and configuration
information about the nonce2ecash API.
- \item \textbf{Response:} HTTP status code 200 OK. The exchange responds with
a \texttt{Nonce2ecashConfig} object.
-\end{itemize}
-
-\subsubsection{Withdrawing using nonce2ecash}
-
-Withdrawals with a nonce2ecash are based on withdrawal operations which
register a withdrawal identifier (nonce) at the nonce2ecash component. The
provider must first create a unique identifier for the withdrawal operation
(the \texttt{WITHDRAWAL\_ID}) to interact with the withdrawal operation and
eventually withdraw using the wallet.
-
-\textbf{POST - withdrawal-operation}
-\begin{itemize}
- \item \textbf{Method:} POST
- \item \textbf{Endpoint:} /withdrawal-operation
- \item \textbf{Description:} Initiate the withdrawal operation, identified by
the \texttt{WITHDRAWAL\_ID}.
- \item \textbf{Request:} The request body contains a
\texttt{WithdrawRegistration} object.
- \item \textbf{Response:} HTTP status code 204 No content, 400 Bad request,
or 500 Internal Server error.
-\end{itemize}
-
-\textbf{GET - withdrawal-operation by withdrawal-id}
-\begin{itemize}
- \item \textbf{Method:} GET
- \item \textbf{Endpoint:} /withdrawal-operation/\$WITHDRAWAL\_ID
- \item \textbf{Description:} Query information about a withdrawal operation,
identified by the \texttt{WITHDRAWAL\_ID}.
- \item \textbf{Response:} HTTP status code 200 OK or 404 Not found.
-\end{itemize}
-
-\textbf{POST - withdrawal-operation by withdrawal-id}
-\begin{itemize}
- \item \textbf{Method:} POST
- \item \textbf{Endpoint:} /withdrawal-operation/\$WITHDRAWAL\_ID
- \item \textbf{Description:} Notifies nonce2ecash about an executed payment
for a specific withdrawal.
- \item \textbf{Request:} The request body contains a
\texttt{PaymentNotification} object.
- \item \textbf{Response:} HTTP status code 204 No content, 400 Bad request,
404 Not found, or 500 Internal Server error.
-\end{itemize}
-
-\subsection{The nonce2ecash database}
-
-The database of the nonce2ecash component must track two different aspects.
The first is the mapping of a nonce to a reserve public key to enable
withdrawals and the second aspect is the authentication of terminals allowing
withdrawals owned by terminal providers like \textit{Wallee}.
-
-\subsubsection{Terminal Provider}
-Table in \autoref{fig-erd-terminal-provider} describing providers of
nonce2ecash terminals. The name of the provider is important, because it
decides which flow shall be taken in order to attest the payment.
-
-\begin{figure}[h]
- \centering
-
\includegraphics[width=0.7\textwidth]{pictures/database/table_terminal_provider.png}
- \caption{Terminal Provider Table}
- \label{fig-erd-terminal-provider}
-\end{figure}
-
-\subsubsection{Terminal}
-Table in \autoref{fig-erd-terminal} contains information about terminals of
providers. This includes the provider they belong to and an authentication
token, which is generated by the Exchange and allows authenticating the
terminal. A terminal belongs to one terminal provider.
-
-\begin{figure}[h]
- \centering
- \includegraphics[width=0.7\textwidth]{pictures/database/table_terminal.png}
- \caption{Terminal Table}
- \label{fig-erd-terminal}
-\end{figure}
-
-\subsubsection{Withdrawal}
-Table in \autoref{fig-erd-withdrawal} represents the withdrawal processes
initiated by terminals. This table therefore contains information about the
withdrawal like the amount, which terminal the withdrawal was initiated from
and which reserve public key is used to create a reserve in the Exchange.
-
-\begin{figure}[h]
- \centering
- \includegraphics[width=0.7\textwidth]{pictures/database/table_withdrawal.png}
- \caption{Withdrawal Table}
- \label{fig-erd-withdrawal}
-\end{figure}
diff --git a/docs/content/architecture/overview.tex
b/docs/content/architecture/overview.tex
index 46a3d62..fe9103d 100644
--- a/docs/content/architecture/overview.tex
+++ b/docs/content/architecture/overview.tex
@@ -4,12 +4,12 @@
\begin{figure}[h]
\centering
- \includegraphics[width=0.7\textwidth]{pictures/diagrams/component.png}
- \caption{Diagram of included components}
+
\includegraphics[width=0.7\textwidth]{pictures/diagrams/system_overview.png}
+ \caption{Diagram of included components and their interactions}
\label{fig-diagram-all-components}
\end{figure}
-The component diagram shows the components involved by the withdrawal using
the terminal. Besides the credit card owned by the user, two systems are
involved and within each system two components are required to fulfill the
task. We have the Taler system which represents the ecosystem for the Taler
payment system with the Taler Wallet and the Taler Exchange involved in the
withdrawal of Taler coins. In the Terminal system, the terminal and the backend
system of the terminal manufacturer [...]
+The component diagram shows the components involved by the withdrawal using
the terminal. Besides the credit card owned by the user, two systems are
involved and within each system two components are required to fulfill the
task. The Taler ecosystem which represents the Taler Wallet and the Taler
Exchange involved in the withdrawal process. In the Terminal system, the
terminal and the backend system of the terminal manufacturer are leveraged in
the process.
\begin{figure}[h]
\centering
@@ -18,7 +18,7 @@ The component diagram shows the components involved by the
withdrawal using the
\label{fig-diagram-all-sequence}
\end{figure}
-The diagram in \autoref{fig-diagram-all-sequence} shows the high level flow to
withdraw Taler using the credit card terminal. It shows when the components of
\autoref{fig-diagram-all-components} interact with each other. It shows the
implementation of the \textbf{nonce2ecash} flow. Terminal, Wallet and Exchange
are linked leveraging a nonce initially generated by the terminal and presented
to the Exchange by the withdrawing Wallet accompanied by a public key.
+The diagram in \autoref{fig-diagram-all-sequence} shows the high level flow to
withdraw Taler using the credit card terminal. It shows when the components of
\autoref{fig-diagram-all-components} interact with each other. It shows the
implementation of the flow. Terminal, Wallet and Exchange are linked leveraging
a nonce initially generated by the terminal and presented to the Exchange by
the withdrawing Wallet accompanied by a public key.
\subsection{Process}
@@ -82,19 +82,17 @@ The Wallet gains the nonce value when scanning the QR code
at the Terminal and t
Besides the entropy needed to establish a correct nonce, the hash function
leveraged must be specified. (TODO - e.g. FIPS 180-4 \cite{fips-180-4} (SHA-1
and SHA-2 families) or FIPS-202 \cite{fips-202} (SHA-3 family, which is still
beeing reviewed))
\subsection{Reserve Public Key}
-The reserve public key is created by the Wallet and sent to the Exchange to
establish the mapping between the nonce and the reserve public key. The reserve
public key, can then be retrieved by the Terminal and used during the payment.
The reserve public key is used to eventually create a reserve at the exchange
which contains the money. The Wallet can then withdraw the money from this
reserve using the withdrawal process of the wallet \cite{wallet-withdrawal}.
+The reserve public key is created by the Wallet and sent to the Exchange to
establish the mapping between the nonce and the reserve public key. The reserve
public key is used to eventually create a reserve at the exchange which
contains the money. The Wallet can then withdraw the money from this reserve
using the withdrawal process of the wallet \cite{wallet-withdrawal}.
\subsection{Payto wallee-transaction extension}
RFC 8905 \cite{rfc8905} specifies a URI scheme (complying with RFC 3986
\cite{rfc3986}), which allows to address a creditor with theoretically any
protocol that can be used to pay someone (such as IBAN, BIC etc.) in a
standardized way. Therefore it introduces a registry which holds the specific
official values of the standard. The registry is supervised by the GANA (GNUnet
Assigned Numbers Authority) \cite{gnunet-gana}.
-For the case of refunds, which might occur in case a credit card transaction
does not succeed, a new \textit{target type} called \textit{wallee-transaction}
is registered. It takes a transaction identifier as \textit{target identifier}
which identifies the transaction for which a refund process shall be triggered.
The idea is that the handler of the payto URI is able to deduct the transaction
from the payto-uri and trigger the refund process.
-
-The idea of the \textit{wallee-transaction target type} is to trigger a refund
process by the owner of the refund process without other services needing to
deal with the refund logic. Therefore transactions which allow refund but the
receiver cannot directly execute the refund, the payto
\textit{wallee-transaction target type} can be used to advice the owner to of
the refund process to start the refund process.
+In case a refund becomes necessary, which might occur if a credit card
transaction does not succeed, a new \textit{target type} called
\textit{wallee-transaction} is registered. It takes a transaction identifier as
\textit{target identifier} which identifies the transaction for which a refund
process shall be triggered. The idea is that the handler of the payto URI is
able to deduct the transaction from the payto-uri and trigger the refund
process.
\subsubsection{Payto refund using Wallee}
Wallee allows to trigger refunds using the Refund Service of the Wallee
backend. The service allows to trigger a refund given a transaction identifier.
Therefore the nonce2ecash component can trigger the refund using the refund
service if needed, and the payto-uri retrieved as debit account by the
wirewatch gateway API, is leveraged to delegate the refund process to the
Wallee Backend using the Refund Service and parsing the transaction identifier
of the payto-uri.
\subsubsection{Extensibility}
-The flow is extensible and other providers than Wallee might be added. They
just register their own refund payto-uri with the GANA and they can implement
the refund process likewise.
+The flow is extensible and other providers like Wallee might be added. They
must therefore register their own refund payto-uri with the GANA and then the
refund process can be implemented likewise.
\pagebreak
\ No newline at end of file
diff --git a/docs/content/architecture/terminal.tex
b/docs/content/architecture/terminal.tex
index b10cc56..e69de29 100644
--- a/docs/content/architecture/terminal.tex
+++ b/docs/content/architecture/terminal.tex
@@ -1,8 +0,0 @@
-\section{Wallee Terminal Application}
-
-\subsection{Wallee Transaction Process}
-describe: https://app-wallee.com/de-de/doc/payment/transaction-process
-document implications for cashless2ecash component (which states are reliable
to cashout coins).
-
-https://app-wallee.com/de-de/doc/api/web-service#_transactionstate
-https://app-wallee.com/de-de/doc/api/web-service#_transaction
\ No newline at end of file
diff --git a/docs/content/architecture/usecase.tex
b/docs/content/architecture/usecase.tex
deleted file mode 100644
index 87f19da..0000000
--- a/docs/content/architecture/usecase.tex
+++ /dev/null
@@ -1 +0,0 @@
-\section{Use Case}
\ No newline at end of file
diff --git a/docs/content/sysview/wallee.tex
b/docs/content/architecture/wallee.tex
similarity index 62%
rename from docs/content/sysview/wallee.tex
rename to docs/content/architecture/wallee.tex
index 33c0e60..72fd763 100644
--- a/docs/content/sysview/wallee.tex
+++ b/docs/content/architecture/wallee.tex
@@ -8,12 +8,4 @@ Wallee Terminals are based on android and run a modified,
certified android vers
Terminals of Wallee are used to communicate with the customer at the shop of
the merchant. The payment and processing of the transaction is run on the
wallee backend. This means that
\subsubsection{Wallee Transaction State}
-In order to decide if a transaction was successful, the states of a
transaction within Wallee must be mapped to the world of Taler. This means that
a reserve shall only be created, if the transaction is in a state which allows
Taler not having any liabilities regarding the transaction and that Wallee
could process the payment successfully. The documentation states that
\textit{only} in the transaction state (see
\autoref*{fig-wallee-transasction-states}) \textit{fulfill}, the delivery of
[...]
-
-\begin{figure}[h]
- \centering
-
\includegraphics[width=0.7\textwidth]{pictures/wallee/wallee_transaction_states.png}
- \caption{Wallee Transaction States}
- \label{fig-wallee-transasction-states}
-\end{figure}
-
+In order to decide if a transaction was successful, the states of a
transaction within Wallee must be mapped to the world of Taler. This means that
a reserve shall only be created, if the transaction is in a state which allows
Taler not having any liabilities regarding the transaction and that Wallee
could process the payment successfully. The documentation states that
\textit{only} in the transaction state \textit{fulfill}, the delivery of the
goods (in case of withdrawal this means, th [...]
diff --git a/docs/content/architecture/wallet.tex
b/docs/content/architecture/wallet.tex
deleted file mode 100644
index 1c6e6d6..0000000
--- a/docs/content/architecture/wallet.tex
+++ /dev/null
@@ -1 +0,0 @@
-\section{Wallet}
\ No newline at end of file
diff --git a/docs/content/sysview/sysview.tex b/docs/content/sysview/sysview.tex
deleted file mode 100644
index b20664a..0000000
--- a/docs/content/sysview/sysview.tex
+++ /dev/null
@@ -1,4 +0,0 @@
-To better understand the architecture, specification and the implementation of
the new components, this chapter contains the description of the necessary
components of the Taler system and the Wallee system. This is however not a
complete documentation or explanation but rather a compilation of the features
needed to implement the respective components.
-
-\include{content/sysview/taler}
-\include{content/sysview/wallee}
\ No newline at end of file
diff --git a/docs/content/sysview/taler.tex b/docs/content/sysview/taler.tex
deleted file mode 100644
index 8801f61..0000000
--- a/docs/content/sysview/taler.tex
+++ /dev/null
@@ -1,9 +0,0 @@
-\section{GNU Taler}
-
-GNU Taler is a payment system which allows paying for goods in an anonymous
way while maintaining a trustworthy relationship between exchanges, merchants
and customers. This goal is reached by implementing strong cryptographic
primitives. Taler is wether a blockchain nor a currency. It is a payment
system. It allows transferring money from A to B anonymously but still letting
regulators control that no regulations are bypassed or ignored.
-
-\subsection{Wirewatch Gateway RESTful API}
-
-The wirewatch gateway helps communicating with the Exchange core using a
convenient API. It helps the Exchange to get guarantees, that a certain
transaction went through and that the reserve can be created and withdrawn.
This will help nonce2ecash to capture the transaction of the Terminal Backend
to the Exchange's account and therefore allow the withdrawal by the customer.
Therefore the wirewatch gateway API is used in nonce2ecash. When the wirewatch
gateway captures a transaction point [...]
-
-
diff --git a/docs/pictures/diagrams/system_overview.png
b/docs/pictures/diagrams/system_overview.png
new file mode 100644
index 0000000..33c6ed6
Binary files /dev/null and b/docs/pictures/diagrams/system_overview.png differ
diff --git a/docs/project.bib b/docs/project.bib
index c8cae9b..3221814 100644
--- a/docs/project.bib
+++ b/docs/project.bib
@@ -112,6 +112,20 @@
howpublished = {\url{https://gana.gnunet.org/}}
}
+@misc{taler-bank-integration-api,
+ author = {Taler},
+ title = {Taler Bank Integration API},
+ url = {https://docs.taler.net/core/api-bank-integration.html},
+ howpublished =
{\url{https://docs.taler.net/core/api-bank-integration.html}}
+}
+
+@misc{taler-wirewatch-gateway-api,
+ author = {Taler},
+ title = {Taler Wire Gateway HTTP API},
+ url = {https://docs.taler.net/core/api-bank-wire.html},
+ howpublished = {\url{https://docs.taler.net/core/api-bank-wire.html}}
+}
+
@misc{wallet-withdrawal,
author = {Taler},
title = {Withdrawal},
diff --git a/docs/thesis.pdf b/docs/thesis.pdf
index ec29fae..9f1cd5f 100644
Binary files a/docs/thesis.pdf and b/docs/thesis.pdf differ
diff --git a/docs/thesis.tex b/docs/thesis.tex
index a0d932c..0079545 100644
--- a/docs/thesis.tex
+++ b/docs/thesis.tex
@@ -178,11 +178,11 @@
\input{content/introduction/goal}
\chapter{System Overview}
-\input{content/sysview/sysview}
+\input{content/architecture/overview}
\chapter{Architecture}
-\input{content/architecture/overview}
-\input{content/architecture/nonce2ecash}
+\input{content/architecture/c2ec}
+\input{content/architecture/wallee}
\chapter{Implementation}
\input{content/implementation/exchange}
diff --git a/nonce2ecash/pkg/db/provider.go b/nonce2ecash/pkg/db/provider.go
index 212e9f9..e91eaca 100644
--- a/nonce2ecash/pkg/db/provider.go
+++ b/nonce2ecash/pkg/db/provider.go
@@ -13,6 +13,7 @@ type TerminalProvider struct {
type Terminal struct {
gorm.Model
+
TerminalID int64 `gorm:"primaryKey"`
AccessToken []byte `gorm:"type:bytea;not
null;check:LENGTH(access_token)=32"`
Active bool `gorm:"not null;default:true"`
diff --git a/specs/api-nonce2ecash.rst b/specs/api-c2ec.rst
similarity index 62%
rename from specs/api-nonce2ecash.rst
rename to specs/api-c2ec.rst
index 9e69e95..030b961 100644
--- a/specs/api-nonce2ecash.rst
+++ b/specs/api-c2ec.rst
@@ -17,7 +17,7 @@
@author Joel Häberli
===========================
-The nonce2ecash RESTful API
+The C2EC RESTful API
===========================
.. note::
@@ -33,45 +33,45 @@ withdrawals through indirect payment channels like credit
cards or ATM.
Authentication
--------------
-Terminals which authenticate against the nonce2ecash API must provide their
respective
+Terminals which authenticate against the C2EC API must provide their
respective
access token. Therefore they provide a ``Authorization: Bearer $ACCESS_TOKEN``
header,
where `$ACCESS_TOKEN`` is a secret authentication token configured by the
exchange and
must begin with the RFC 8959 prefix.
----------------------------
-Configuration of nonce2ecash
+Configuration of C2EC
----------------------------
.. http:get:: /config
- Return the protocol version and configuration information about the
nonce2ecash API.
+ Return the protocol version and configuration information about the C2EC API.
**Response:**
:http:statuscode:`200 OK`:
- The exchange responds with a `Nonce2ecashConfig` object. This request
should
+ The exchange responds with a `C2ECConfig` object. This request should
virtually always be successful.
**Details:**
- .. ts:def:: Nonce2ecashConfig
+ .. ts:def:: C2ECConfig
- interface Nonce2ecashConfig {
+ interface C2ECConfig {
// Name of the API.
- name: "taler-nonce2ecash";
+ name: "taler-c2ec";
- // libtool-style representation of the nonce2ecash protocol version, see
+ // libtool-style representation of the C2EC protocol version, see
//
https://www.gnu.org/software/libtool/manual/html_node/Versioning.html#Versioning
// The format is "current:revision:age".
version: string;
}
-----------------------------
-Withdrawing using nonce2ecash
+Withdrawing using C2EC
-----------------------------
-Withdrawals with a nonce2ecash are based on withdrawal operations which
register a withdrawal identifier
-(nonce) at the nonce2ecash component. The provider must first create a unique
identifier for the withdrawal
+Withdrawals with a C2EC are based on withdrawal operations which register a
withdrawal identifier
+(nonce) at the C2EC component. The provider must first create a unique
identifier for the withdrawal
operation (the ``WITHDRAWAL_ID``) to interact with the withdrawal operation
and eventually withdraw using the wallet.
.. http:post:: /withdrawal-operation
@@ -80,7 +80,7 @@ operation (the ``WITHDRAWAL_ID``) to interact with the
withdrawal operation and
**Request:**
- .. ts:def:: WithdrawRegistration
+ .. ts:def:: C2ECWithdrawalOperationPostRequest
interface WithdrawRegistration {
// Maps a nonce generated by the provider to a reserve public key
generated by the wallet.
@@ -114,30 +114,48 @@ operation (the ``WITHDRAWAL_ID``) to interact with the
withdrawal operation and
**Response:**
:http:statuscode:`200 Ok`:
- The withdrawal was found and is returned in the response body as
``Withdrawal``.
+ The withdrawal was found and is returned in the response body as
``C2ECWithdrawalStatus``.
:http:statuscode:`404 Not found`:
- nonce2ecash does not have a withdrawal registered with the specified
``WITHDRAWAL_ID``.
+ C2EC does not have a withdrawal registered with the specified
``WITHDRAWAL_ID``.
**Details**
- .. ts:def:: Withdrawal
-
- interface Withdrawal {
-
- // Reserve public key generated by the wallet.
- // According to TALER_ReservePublicKeyP
(https://docs.taler.net/core/api-common.html#cryptographic-primitives)
- reserve_pub_key: EddsaPublicKey;
+ .. ts:def:: C2ECWithdrawalStatus
+
+ interface C2ECWithdrawalStatus {
+ // Current status of the operation
+ // pending: the operation is pending parameters selection (exchange
and reserve public key)
+ // selected: the operations has been selected and is pending
confirmation
+ // aborted: the operation has been aborted
+ // confirmed: the transfer has been confirmed and registered by the
bank
+ // Since protocol v1.
+ status: "pending" | "selected" | "aborted" | "confirmed";
+
+ // Amount that will be withdrawn with this operation
+ // (raw amount without fee considerations).
+ amount: Amount;
+
+ // A refund address as ``payto`` URI. This address shall be used
+ // in case a refund must be done. Only not-null if the status
+ // is "confirmed" or "aborted"
+ refund_wire?: string;
+
+ // Reserve public key selected by the exchange,
+ // only non-null if ``status`` is ``selected`` or ``confirmed``.
+ // Since protocol v1.
+ selected_reserve_pub?: string;
}
+
.. http:post:: /withdrawal-operation/$WITHDRAWAL_ID
- Notifies nonce2ecash about an executed payment for a specific withdrawal.
+ Notifies C2EC about an executed payment for a specific withdrawal.
**Request:**
- .. ts:def:: PaymentNotification
+ .. ts:def:: C2ECPaymentNotification
- interface PaymentNotification {
+ interface C2ECPaymentNotification {
// Unique identifier of the provider transaction.
provider_transaction_id: string;
@@ -153,11 +171,11 @@ operation (the ``WITHDRAWAL_ID``) to interact with the
withdrawal operation and
**Response:**
:http:statuscode:`204 No content`:
- nonce2ecash received the ``PaymentNotification`` successfully and will
further process
+ C2EC received the ``C2ECPaymentNotification`` successfully and will
further process
the withdrawal.
:http:statuscode:`400 Bad request`:
- The ``PaymentNotification`` request was malformed or contained invalid
parameters.
+ The ``C2ECPaymentNotification`` request was malformed or contained invalid
parameters.
:http:statuscode:`404 Not found`:
- nonce2ecash does not have a withdrawal registered with the specified
``WITHDRAWAL_ID``.
+ C2EC does not have a withdrawal registered with the specified
``WITHDRAWAL_ID``.
:http:statuscode:`500 Internal Server error`:
- The ``PaymentNotification`` could not be processed due to server side
issues.
+ The ``C2ECPaymentNotification`` could not be processed due to server side
issues.
diff --git a/specs/system_overview.odg b/specs/system_overview.odg
new file mode 100644
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