[hardware wallet] refs skycoin#123 Add guide

simelo · Aug 15, 2019 · b01585b · b01585b
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diff --git a/_data/dev-docs/guides/hardware_wallet_transactions.md b/_data/dev-docs/guides/hardware_wallet_transactions.md
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+# Hardware Wallet
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+## Protocol for the signing of transactions
+
+The fundamental objective of the development of the Hardware Wallet is the safe maintenance of the vital data of a wallet, such as the seed. Due to what is necessary for the signing of transactions, the implementation of a protocol that facilitates the signing of transactions internally in the Hardware Wallet is required.
+
+In broad strokes, and after a series of steps the protocol provides the following result:
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+![long-transactions-intro](/_data/img/long-transaction-intro.png)
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+The signing process consists of three fundamental steps, wich are:
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+- Initialization
+- Calculating inner hash of transaction
+- Calculating signatures for all inputs
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+Each step is based on a cycle of sending and receiving groups of Inputs and Outputs, with at most 7 elements.
diff --git a/_data/img/long-transaction-intro.png b/_data/img/long-transaction-intro.png