bitcoin_message/
message.rs

1crate::ix!();
2
3//-------------------------------------------[.cpp/bitcoin/src/util/message.h]
4
5lazy_static!{
6    /*
7    extern const std::string MESSAGE_MAGIC;
8    */
9}
10
11/**
12  | The result of a signed message verification.
13  | 
14  | Message verification takes as an input:
15  | 
16  | - address (with whose private key the
17  | message is supposed to have been signed)
18  | 
19  | - signature
20  | 
21  | - message
22  |
23  */
24pub enum MessageVerificationResult {
25
26    /**
27      | The provided address is invalid.
28      |
29      */
30    ERR_INVALID_ADDRESS,
31
32    /**
33      | The provided address is valid but does
34      | not refer to a public key.
35      |
36      */
37    ERR_ADDRESS_NO_KEY,
38
39    /**
40      | The provided signature couldn't be
41      | parsed (maybe invalid base64).
42      |
43      */
44    ERR_MALFORMED_SIGNATURE,
45
46    /**
47      | A public key could not be recovered from
48      | the provided signature and message.
49      |
50      */
51    ERR_PUBKEY_NOT_RECOVERED,
52
53    /**
54      | The message was not signed with the private
55      | key of the provided address.
56      |
57      */
58    ERR_NOT_SIGNED,
59
60    /**
61      | The message verification was successful.
62      |
63      */
64    OK
65}
66
67//-------------------------------------------[.cpp/bitcoin/src/util/message.cpp]
68
69/**
70  | Text used to signify that a signed message
71  | follows and to prevent inadvertently
72  | signing a transaction.
73  |
74  */
75pub const MESSAGE_MAGIC: &'static str = "Bitcoin Signed Message:\n";
76
77/**
78  | Verify a signed message.
79  | 
80  | -----------
81  | @param[in] address
82  | 
83  | Signer's bitcoin address, it must refer
84  | to a public key.
85  | ----------
86  | @param[in] signature
87  | 
88  | The signature in base64 format.
89  | ----------
90  | @param[in] message
91  | 
92  | The message that was signed.
93  | 
94  | -----------
95  | @return
96  | 
97  | result code
98  |
99  */
100pub fn message_verify(
101        address:   &String,
102        signature: &String,
103        message:   &String) -> MessageVerificationResult {
104    
105    todo!();
106        /*
107            TxDestination destination = DecodeDestination(address);
108        if (!IsValidDestination(destination)) {
109            return MessageVerificationResult::ERR_INVALID_ADDRESS;
110        }
111
112        if (std::get_if<PKHash>(&destination) == nullptr) {
113            return MessageVerificationResult::ERR_ADDRESS_NO_KEY;
114        }
115
116        bool invalid = false;
117        std::vector<unsigned char> signature_bytes = DecodeBase64(signature.c_str(), &invalid);
118        if (invalid) {
119            return MessageVerificationResult::ERR_MALFORMED_SIGNATURE;
120        }
121
122        CPubKey pubkey;
123        if (!pubkey.RecoverCompact(MessageHash(message), signature_bytes)) {
124            return MessageVerificationResult::ERR_PUBKEY_NOT_RECOVERED;
125        }
126
127        if (!(TxDestination(PKHash(pubkey)) == destination)) {
128            return MessageVerificationResult::ERR_NOT_SIGNED;
129        }
130
131        return MessageVerificationResult::OK;
132        */
133}
134
135/**
136  | Sign a message.
137  | 
138  | -----------
139  | @param[in] privkey
140  | 
141  | Private key to sign with.
142  | ----------
143  | @param[in] message
144  | 
145  | The message to sign.
146  | ----------
147  | @param[out] signature
148  | 
149  | Signature, base64 encoded, only set
150  | if true is returned.
151  | 
152  | -----------
153  | @return
154  | 
155  | true if signing was successful.
156  |
157  */
158pub fn message_sign(
159    privkey:   &Key,
160    message:   &String,
161    signature: &mut String) -> bool {
162    
163    todo!();
164        /*
165            std::vector<unsigned char> signature_bytes;
166
167        if (!privkey.SignCompact(MessageHash(message), signature_bytes)) {
168            return false;
169        }
170
171        signature = EncodeBase64(signature_bytes);
172
173        return true;
174        */
175}
176
177/**
178  | Hashes a message for signing and verification
179  | in a manner that prevents inadvertently
180  | signing a transaction.
181  |
182  */
183pub fn message_hash(message: &String) -> u256 {
184    
185    todo!();
186        /*
187            CHashWriter hasher(SER_GETHASH, 0);
188        hasher << MESSAGE_MAGIC << message;
189
190        return hasher.GetHash();
191        */
192}
193
bitcoin_message/message.rs

bitcoin_message/
message.rs
