42 lines
1.7 KiB
Go
42 lines
1.7 KiB
Go
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package input
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import (
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"github.com/btcsuite/btcd/wire"
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)
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// Signer represents an abstract object capable of generating raw signatures as
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// well as full complete input scripts given a valid SignDescriptor and
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// transaction. This interface fully abstracts away signing paving the way for
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// Signer implementations such as hardware wallets, hardware tokens, HSM's, or
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// simply a regular wallet.
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type Signer interface {
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// SignOutputRaw generates a signature for the passed transaction
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// according to the data within the passed SignDescriptor.
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//
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// NOTE: The resulting signature should be void of a sighash byte.
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SignOutputRaw(tx *wire.MsgTx, signDesc *SignDescriptor) ([]byte, error)
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// ComputeInputScript generates a complete InputIndex for the passed
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// transaction with the signature as defined within the passed
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// SignDescriptor. This method should be capable of generating the
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// proper input script for both regular p2wkh output and p2wkh outputs
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// nested within a regular p2sh output.
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//
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// NOTE: This method will ignore any tweak parameters set within the
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// passed SignDescriptor as it assumes a set of typical script
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// templates (p2wkh, np2wkh, etc).
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ComputeInputScript(tx *wire.MsgTx, signDesc *SignDescriptor) (*Script, error)
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}
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// Script represents any script inputs required to redeem a previous
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// output. This struct is used rather than just a witness, or scripSig in order
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// to accommodate nested p2sh which utilizes both types of input scripts.
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type Script struct {
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// Witness is the full witness stack required to unlock this output.
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Witness wire.TxWitness
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// SigScript will only be populated if this is an input script sweeping
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// a nested p2sh output.
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SigScript []byte
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}
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