usawa

Signed, immutable accounting.
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authentication.texi (780B)

      1 @anchor{authentication}
      2 @chapter {Authentication}
      3 
      4 Both the ledger state and individual entries are signed by one or more private keys.
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      6 A ledger state is kept to ensure sequential serial numbers for each added entries. A serial number out of sequence @emph{must} invalidate the ledger.
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      8 Furthermore, entries form a chain. Each entry contains the digest of the entry preceding it.
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     10 
     11 @subsection{Key trust}
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     13 @strong{usawa} does not specify any particular trust engine or public key infrastructure to use.
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     15 However, the specification does include a mechanism for embedding identity metadata, described in @ref{identity,Identities}.
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     17 The corresponding element in the @ref{ledger_header, ledger header} also provides a means to describe what each identity can be trusted to sign for.