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Abandon Trial – (Purse) In some (trial) versions of the ecash Purse the Abandon Trial function is provided. After confirming the instruction the Purse will Cancel any outstanding Payments, Deposit the ecash held by the Purse, and instruct that the Account status be changed to ‘disabled’. Thereafter the Account cannot be used.
Abort Transaction – (cf. Cancel Transaction) In some versions of the ecash Purse the Abort function is provided to stop the exchange of messages, and send a message which requests a roll-back to the start of the protocol. The software can then verify whether the transaction has been successfully aborted. This
function is not included in all software versions, and, given the time/sequence factors and the general complexities of Internet protocols, it cannot always be successful.
Accepted – (The Transaction Status is indicated for each transaction in the Transaction Log). A transaction is assigned 'Accepted' status after execution has been acknowledged or verified. The 'Accepted' (or 'OK') status is regarded as the default and shows no icon in the appropriate field (see Transaction Status Icons).
Account (ecash Account) – A Purse-holder's (digital) Account with a Mint (sometimes known as a Safe). For an ecash client to function, each Purse-holder must have one or more such Accounts at an operational Mint run by an ecash Issuer. Each Account is in a specified currency. An ecash Account may be maintained separately or as a feature of an existing conventional bank account or credit card, etc. Purseholders can open one or more ecash Accounts with one or more Issuers, and may therefore own several Account IDs.
Account ID – The Account name on a digital Account. (Although this may include any combination of alpha-numeric characters such as an email address.) The Account ID is not necessarily globally unique (although it assumed to be so when concatenated with the Issuer ID) (see also email address, below).
Account Number – A unique number within the Mint which (in conjunction with the Mint Number or Mint ID) serves as a globally unique identifier.
Account Status – Each Account is associated with one of the following states – Enabled, Disabled or Unused.
Accounts Window – (Purse) The main ecash window includes an overview of Mint and Purse balances and presents buttons which access basic functions such as Withdrawal, Deposit and Refresh Coins.
Coinage – A set of digital coins issued by the Mint and designated with the same Coinage Version Number. Each Coinage issued by the Mint is based on a set of defined values including the Currency, the expiry dates, the number of coins in the series and the Base Coin Value (the value of the first / lowest value Coin in any Coinage), It is linked to a specified set of Coin Keys.
Coin(age) Expiry Date – Each Coinage Version expires according to a Phased Expiry Schedule (see below) which specifies the dates on which all Coins made in a specified Coinage will cease to be functional. After the expiry date the ecash client software waits for a connection to the Mint (i.e. the next Check Mint, Deposit or Withdrawal transaction), and exchanges expired coins for freshly minted ecash. At a later date (determined by the Issuer) it will become necessary to make a special request to the bank, and the Issuer may require some time to check the validity of the expired coins before they can be reissued.
Command Line – Non-graphic clients (used for ecash by Merchants and some UNIX users) are operated using a series of key commands entered in text mode. This type of interface is also used in MS DOS to
configure system executables. The application presents a prompt and responds to the input command directly.
Confidentiality – The property of a message such that it cannot be decoded or read by an unauthorized third party.
Crash – see Recovery
Create / Terminate Account – In order to maintain a clear distinction, the terms Create (and Terminate) are used to describe the procedure by which ecash Accounts are defined and established at the Mint. Following a request from the user an Account is assigned or 'Created'. When the Set-up Protocol is performed, the Account receives an opening transaction and becomes 'enabled'. If the Account is to be removed from the system then it should first be 'disabled' (so that no new transactions are possible), then closed (including the removal of any outstanding balance) and then 'Terminated' (i.e. removed from the Mint's Account Database). Thereafter the Account will no longer exist.
Currency – All ecash money is denoted in a currency. The currency might be an existing 'real-world' currency, such as the US dollar, or the Dutch guilder, but ecash is not restricted to existing currencies. Alternatively, the currency might be a precious metal, stocks, bonds, futures, coconuts, e-miles, airmiles, oil or any other trading item. Strictly speaking, the currency is also defined by the Issuer and the currency-fraction (also known as the 'granularity'). Thus, dollar amounts are represented in cents (1/100th of one dollar), and oil amounts are represented in (full) barrels. Each currency is defined by a unique Currency ID. (See also Coin Denomination Distribution).
Denomination – The integer value of a coin, expressed in the currency-fractions.
Abort Transaction – (cf. Cancel Transaction) In some versions of the ecash Purse the Abort function is provided to stop the exchange of messages, and send a message which requests a roll-back to the start of the protocol. The software can then verify whether the transaction has been successfully aborted. This
function is not included in all software versions, and, given the time/sequence factors and the general complexities of Internet protocols, it cannot always be successful.
Accepted – (The Transaction Status is indicated for each transaction in the Transaction Log). A transaction is assigned 'Accepted' status after execution has been acknowledged or verified. The 'Accepted' (or 'OK') status is regarded as the default and shows no icon in the appropriate field (see Transaction Status Icons).
Account (ecash Account) – A Purse-holder's (digital) Account with a Mint (sometimes known as a Safe). For an ecash client to function, each Purse-holder must have one or more such Accounts at an operational Mint run by an ecash Issuer. Each Account is in a specified currency. An ecash Account may be maintained separately or as a feature of an existing conventional bank account or credit card, etc. Purseholders can open one or more ecash Accounts with one or more Issuers, and may therefore own several Account IDs.
Account ID – The Account name on a digital Account. (Although this may include any combination of alpha-numeric characters such as an email address.) The Account ID is not necessarily globally unique (although it assumed to be so when concatenated with the Issuer ID) (see also email address, below).
Account Number – A unique number within the Mint which (in conjunction with the Mint Number or Mint ID) serves as a globally unique identifier.
Account Status – Each Account is associated with one of the following states – Enabled, Disabled or Unused.
Accounts Window – (Purse) The main ecash window includes an overview of Mint and Purse balances and presents buttons which access basic functions such as Withdrawal, Deposit and Refresh Coins.
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Coinage – A set of digital coins issued by the Mint and designated with the same Coinage Version Number. Each Coinage issued by the Mint is based on a set of defined values including the Currency, the expiry dates, the number of coins in the series and the Base Coin Value (the value of the first / lowest value Coin in any Coinage), It is linked to a specified set of Coin Keys.
Coin(age) Expiry Date – Each Coinage Version expires according to a Phased Expiry Schedule (see below) which specifies the dates on which all Coins made in a specified Coinage will cease to be functional. After the expiry date the ecash client software waits for a connection to the Mint (i.e. the next Check Mint, Deposit or Withdrawal transaction), and exchanges expired coins for freshly minted ecash. At a later date (determined by the Issuer) it will become necessary to make a special request to the bank, and the Issuer may require some time to check the validity of the expired coins before they can be reissued.
Command Line – Non-graphic clients (used for ecash by Merchants and some UNIX users) are operated using a series of key commands entered in text mode. This type of interface is also used in MS DOS to
configure system executables. The application presents a prompt and responds to the input command directly.
Confidentiality – The property of a message such that it cannot be decoded or read by an unauthorized third party.
Crash – see Recovery
Create / Terminate Account – In order to maintain a clear distinction, the terms Create (and Terminate) are used to describe the procedure by which ecash Accounts are defined and established at the Mint. Following a request from the user an Account is assigned or 'Created'. When the Set-up Protocol is performed, the Account receives an opening transaction and becomes 'enabled'. If the Account is to be removed from the system then it should first be 'disabled' (so that no new transactions are possible), then closed (including the removal of any outstanding balance) and then 'Terminated' (i.e. removed from the Mint's Account Database). Thereafter the Account will no longer exist.
Currency – All ecash money is denoted in a currency. The currency might be an existing 'real-world' currency, such as the US dollar, or the Dutch guilder, but ecash is not restricted to existing currencies. Alternatively, the currency might be a precious metal, stocks, bonds, futures, coconuts, e-miles, airmiles, oil or any other trading item. Strictly speaking, the currency is also defined by the Issuer and the currency-fraction (also known as the 'granularity'). Thus, dollar amounts are represented in cents (1/100th of one dollar), and oil amounts are represented in (full) barrels. Each currency is defined by a unique Currency ID. (See also Coin Denomination Distribution).
Denomination – The integer value of a coin, expressed in the currency-fractions.