2014-01-09 06:51:37 +01:00
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// Copyright (c) 2013-2014 Conformal Systems LLC.
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2013-06-13 20:27:23 +02:00
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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 btcec implements support for the elliptic curves needed for bitcoin.
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Bitcoin uses elliptic curve cryptography using koblitz curves
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(specifically secp256k1) for cryptographic functions. See
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http://www.secg.org/collateral/sec2_final.pdf for details on the
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standard.
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This package provides the data structures and functions implementing the
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crypto/elliptic Curve interface in order to permit using these curves
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with the standard crypto/ecdsa package provided with go. Helper
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functionality is provided to parse signatures and public keys from
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standard formats. It was designed for use with btcd, but should be
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general enough for other uses of elliptic curve crypto. It was based on
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some initial work by ThePiachu.
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Usage
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To verify a secp256k1 signature the following may be done:
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import crypto/ecdsa
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pubKey, err := btcec.ParsePubKey(pkStr, btcec.S256())
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signature, err := btcec.ParseSignature(sigStr, btcec.S256())
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ok := ecdsa.Verify(pubKey, message, signature.R, signature.S)
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*/
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package btcec
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