43 lines
1.9 KiB
Go
43 lines
1.9 KiB
Go
// Copyright (c) 2013-2017 The btcsuite developers
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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/*
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Package txscript implements the bitcoin transaction script language.
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A complete description of the script language used by bitcoin can be found at
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https://en.bitcoin.it/wiki/Script. The following only serves as a quick
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overview to provide information on how to use the package.
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This package provides data structures and functions to parse and execute
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bitcoin transaction scripts.
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Script Overview
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Bitcoin transaction scripts are written in a stack-base, FORTH-like language.
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The bitcoin script language consists of a number of opcodes which fall into
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several categories such pushing and popping data to and from the stack,
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performing basic and bitwise arithmetic, conditional branching, comparing
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hashes, and checking cryptographic signatures. Scripts are processed from left
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to right and intentionally do not provide loops.
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The vast majority of Bitcoin scripts at the time of this writing are of several
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standard forms which consist of a spender providing a public key and a signature
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which proves the spender owns the associated private key. This information
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is used to prove the the spender is authorized to perform the transaction.
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One benefit of using a scripting language is added flexibility in specifying
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what conditions must be met in order to spend bitcoins.
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Errors
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Errors returned by this package are of type txscript.Error. This allows the
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caller to programmatically determine the specific error by examining the
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ErrorCode field of the type asserted txscript.Error while still providing rich
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error messages with contextual information. A convenience function named
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IsErrorCode is also provided to allow callers to easily check for a specific
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error code. See ErrorCode in the package documentation for a full list.
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*/
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package txscript
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