38 lines
900 B
Promela
38 lines
900 B
Promela
@startuml
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autonumber
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Actor "Customer Browser" as Customer
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Participant "Bank Site" as Bank
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Participant "Taler Exchange" as Exchange
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note over Customer, Bank: HTTPS
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note over Customer, Exchange: HTTPS
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note over Bank, Exchange: wire transfer
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title Taler (Withdraw coins)
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Customer->Bank: user authentication
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Bank->Customer: send account portal
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Customer->Customer: initiate withdrawal (specify amount and exchange)
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Customer->Exchange: request coin denomination keys and wire transfer data
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Exchange->Customer: send coin denomination keys and wire transfer data
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Customer->Bank: execute withdrawal
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opt
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Bank->Customer: request transaction authorization
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Customer->Bank: transaction authorization
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end
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Bank->Customer: withdrawal confirmation
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Bank->Exchange: execute wire transfer
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Customer->Exchange: withdraw request
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Customer<-Exchange: signed blinded coins
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Customer->Customer: unblind coins
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@enduml
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