signmessage.h File Reference

#include <uint256.h>
#include <string>

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Enumerations
enum class	MessageVerificationResult {   ERR_INVALID_ADDRESS , ERR_ADDRESS_NO_KEY , ERR_MALFORMED_SIGNATURE , ERR_PUBKEY_NOT_RECOVERED ,   ERR_NOT_SIGNED , OK }
	The result of a signed message verification. More...
enum class	SigningResult { OK , PRIVATE_KEY_NOT_AVAILABLE , SIGNING_FAILED }

Functions
MessageVerificationResult	MessageVerify (const std::string &address, const std::string &signature, const std::string &message)
	Verify a signed message. More...
bool	MessageSign (const CKey &privkey, const std::string &message, std::string &signature)
	Sign a message. More...
uint256	MessageHash (const std::string &message)
	Hashes a message for signing and verification in a manner that prevents inadvertently signing a transaction. More...
std::string	SigningResultString (const SigningResult res)

Variables
const std::string	MESSAGE_MAGIC
	Text used to signify that a signed message follows and to prevent inadvertently signing a transaction. More...

Enumeration Type Documentation

MessageVerificationResult

enum class MessageVerificationResult

strong

The result of a signed message verification.

Message verification takes as an input:

• address (with whose private key the message is supposed to have been signed)
• signature
• message

Enumerator
ERR_INVALID_ADDRESS	The provided address is invalid.
ERR_ADDRESS_NO_KEY	The provided address is valid but does not refer to a public key.
ERR_MALFORMED_SIGNATURE	The provided signature couldn't be parsed (maybe invalid base64).
ERR_PUBKEY_NOT_RECOVERED	A public key could not be recovered from the provided signature and message.
ERR_NOT_SIGNED	The message was not signed with the private key of the provided address.
OK	The message verification was successful.

Definition at line 23 of file signmessage.h.

SigningResult

enum class SigningResult

strong

Enumerator
OK	No error.
PRIVATE_KEY_NOT_AVAILABLE
SIGNING_FAILED

Definition at line 43 of file signmessage.h.

Function Documentation

MessageHash()

uint256 MessageHash

(

const std::string &

message

)

Hashes a message for signing and verification in a manner that prevents inadvertently signing a transaction.

Definition at line 73 of file signmessage.cpp.

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MessageSign()

bool MessageSign	(	const CKey &	privkey,
		const std::string &	message,
		std::string &	signature
	)

Sign a message.

Parameters

[in]	privkey	Private key to sign with.
[in]	message	The message to sign.
[out]	signature	Signature, base64 encoded, only set if true is returned.

Returns

true if signing was successful.

Definition at line 57 of file signmessage.cpp.

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MessageVerify()

MessageVerificationResult MessageVerify	(	const std::string &	address,
		const std::string &	signature,
		const std::string &	message
	)

Verify a signed message.

Parameters

[in]	address	Signer's bitcoin address, it must refer to a public key.
[in]	signature	The signature in base64 format.
[in]	message	The message that was signed.

Returns

result code

Definition at line 26 of file signmessage.cpp.

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SigningResultString()

std::string SigningResultString

(

const SigningResult

res

)

Definition at line 81 of file signmessage.cpp.

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Variable Documentation

MESSAGE_MAGIC

const std::string MESSAGE_MAGIC

extern

Text used to signify that a signed message follows and to prevent inadvertently signing a transaction.

Definition at line 24 of file signmessage.cpp.