sigencoding.cpp File Reference

#include <script/sigencoding.h>
#include <pubkey.h>
#include <script/script_flags.h>
#include <boost/range/adaptor/sliced.hpp>

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Typedefs
typedef boost::sliced_range< const valtype >	slicedvaltype

Functions
static bool	IsValidDERSignatureEncoding (const slicedvaltype &sig)
	A canonical signature exists of: <30> <total len> <02> <len R> <R> <02> <len S> , where R and S are not negative (their first byte has its highest bit not set), and not excessively padded (do not start with a 0 byte, unless an otherwise negative number follows, in which case a single 0 byte is necessary and even required).
static bool	IsSchnorrSig (const slicedvaltype &sig)
static bool	CheckRawECDSASignatureEncoding (const slicedvaltype &sig, uint32_t flags, ScriptError *serror)
static bool	CheckRawSchnorrSignatureEncoding (const slicedvaltype &sig, uint32_t flags, ScriptError *serror)
static bool	CheckRawSignatureEncoding (const slicedvaltype &sig, uint32_t flags, ScriptError *serror)
bool	CheckDataSignatureEncoding (const valtype &vchSig, uint32_t flags, ScriptError *serror)
	Check that the signature provided on some data is properly encoded.
static bool	CheckSighashEncoding (const valtype &vchSig, uint32_t flags, ScriptError *serror)
template<typename F >
static bool	CheckTransactionSignatureEncodingImpl (const valtype &vchSig, uint32_t flags, ScriptError *serror, F fun)
bool	CheckTransactionSignatureEncoding (const valtype &vchSig, uint32_t flags, ScriptError *serror)
	Check that the signature provided to authentify a transaction is properly encoded.
bool	CheckTransactionECDSASignatureEncoding (const valtype &vchSig, uint32_t flags, ScriptError *serror)
	Check that the signature provided to authentify a transaction is properly encoded ECDSA signature.
bool	CheckTransactionSchnorrSignatureEncoding (const valtype &vchSig, uint32_t flags, ScriptError *serror)
	Check that the signature provided to authentify a transaction is properly encoded Schnorr signature (or null).
static bool	IsCompressedOrUncompressedPubKey (const valtype &vchPubKey)
bool	CheckPubKeyEncoding (const valtype &vchPubKey, uint32_t flags, ScriptError *serror)
	Check that a public key is encoded properly.

Typedef Documentation

slicedvaltype

typedef boost::sliced_range<const valtype> slicedvaltype

Definition at line 14 of file sigencoding.cpp.

Function Documentation

CheckDataSignatureEncoding()

bool CheckDataSignatureEncoding	(	const valtype &	vchSig,
		uint32_t	flags,
		ScriptError *	serror
	)

Check that the signature provided on some data is properly encoded.

Signatures passed to OP_CHECKDATASIG and its verify variant must be checked using this function.

Definition at line 202 of file sigencoding.cpp.

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CheckPubKeyEncoding()

bool CheckPubKeyEncoding	(	const valtype &	vchPubKey,
		uint32_t	flags,
		ScriptError *	serror
	)

Check that a public key is encoded properly.

Definition at line 305 of file sigencoding.cpp.

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CheckRawECDSASignatureEncoding()

static bool CheckRawECDSASignatureEncoding ( const slicedvaltype &  sig, uint32_t  flags, ScriptError *  serror  )

static

Definition at line 160 of file sigencoding.cpp.

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CheckRawSchnorrSignatureEncoding()

static bool CheckRawSchnorrSignatureEncoding ( const slicedvaltype &  sig, uint32_t  flags, ScriptError *  serror  )

static

Definition at line 183 of file sigencoding.cpp.

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CheckRawSignatureEncoding()

static bool CheckRawSignatureEncoding ( const slicedvaltype &  sig, uint32_t  flags, ScriptError *  serror  )

static

Definition at line 192 of file sigencoding.cpp.

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CheckSighashEncoding()

static bool CheckSighashEncoding ( const valtype &  vchSig, uint32_t  flags, ScriptError *  serror  )

static

Definition at line 214 of file sigencoding.cpp.

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CheckTransactionECDSASignatureEncoding()

bool CheckTransactionECDSASignatureEncoding	(	const valtype &	vchSig,
		uint32_t	flags,
		ScriptError *	serror
	)

Check that the signature provided to authentify a transaction is properly encoded ECDSA signature.

Signatures passed to OP_CHECKMULTISIG and its verify variant must be checked using this function.

Definition at line 265 of file sigencoding.cpp.

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CheckTransactionSchnorrSignatureEncoding()

bool CheckTransactionSchnorrSignatureEncoding	(	const valtype &	vchSig,
		uint32_t	flags,
		ScriptError *	serror
	)

Check that the signature provided to authentify a transaction is properly encoded Schnorr signature (or null).

Signatures passed to the new-mode OP_CHECKMULTISIG and its verify variant must be checked using this function.

Definition at line 277 of file sigencoding.cpp.

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CheckTransactionSignatureEncoding()

bool CheckTransactionSignatureEncoding	(	const valtype &	vchSig,
		uint32_t	flags,
		ScriptError *	serror
	)

Check that the signature provided to authentify a transaction is properly encoded.

Signatures passed to OP_CHECKSIG and its verify variant must be checked using this function.

Definition at line 254 of file sigencoding.cpp.

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CheckTransactionSignatureEncodingImpl()

template<typename F >

static bool CheckTransactionSignatureEncodingImpl ( const valtype &  vchSig, uint32_t  flags, ScriptError *  serror, F  fun  )

static

Definition at line 236 of file sigencoding.cpp.

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IsCompressedOrUncompressedPubKey()

static bool IsCompressedOrUncompressedPubKey ( const valtype &  vchPubKey )

static

Definition at line 289 of file sigencoding.cpp.

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IsSchnorrSig()

static bool IsSchnorrSig ( const slicedvaltype &  sig )

static

Definition at line 156 of file sigencoding.cpp.

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IsValidDERSignatureEncoding()

static bool IsValidDERSignatureEncoding ( const slicedvaltype &  sig )

static

A canonical signature exists of: <30> <total len> <02> <len R> <R> <02> <len S> , where R and S are not negative (their first byte has its highest bit not set), and not excessively padded (do not start with a 0 byte, unless an otherwise negative number follows, in which case a single 0 byte is necessary and even required).

See https://bitcointalk.org/index.php?topic=8392.msg127623#msg127623

This function is consensus-critical since BIP66.

Definition at line 27 of file sigencoding.cpp.

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