36 lines
1.2 KiB
Markdown
36 lines
1.2 KiB
Markdown
# Message Verification and Signing
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Bitcore implementation of [bitcoin message signing and verification](http://bitcoin.stackexchange.com/questions/3337/what-are-the-safety-guidelines-for-using-the-sign-message-feature/3339#3339). This is used to cryptographically prove that a certain message was signed by the holder of an address private key.
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For more information refer to the [bitcore-message](https://github.com/bitpay/bitcore-message) github repo.
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## Installation
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Message Verification and Signing is implemented as a separate module and you must add it to your dependencies:
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For node projects:
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```bash
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npm install bitcore-message --save
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```
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For client-side projects:
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```bash
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bower install bitcore-message --save
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```
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## Example
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To sign a message:
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```javascript
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var privateKey = PrivateKey.fromWIF('cPBn5A4ikZvBTQ8D7NnvHZYCAxzDZ5Z2TSGW2LkyPiLxqYaJPBW4');
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var signature = Message('hello, world').sign(privateKey);
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```
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To verify a message:
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```javascript
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var address = 'n1ZCYg9YXtB5XCZazLxSmPDa8iwJRZHhGx';
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var signature = 'H/DIn8uA1scAuKLlCx+/9LnAcJtwQQ0PmcPrJUq90aboLv3fH5fFvY+vmbfOSFEtGarznYli6ShPr9RXwY9UrIY=';
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var verified = Message('hello, world').verify(address, signature);
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```
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