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j-bitcoin

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Comprehensive JavaScript cryptocurrency wallet library for Bitcoin (BTC), Bitcoin Cash (BCH), and Bitcoin SV (BSV) with custodial and non-custodial wallet support, threshold signatures, and multiple address formats

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<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>JSDoc: Namespace: BIP39</title> <script src="scripts/prettify/prettify.js"> </script> <script src="scripts/prettify/lang-css.js"> </script> <!--[if lt IE 9]> <script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script> <![endif]--> <link type="text/css" rel="stylesheet" href="styles/prettify-tomorrow.css"> <link type="text/css" rel="stylesheet" href="styles/jsdoc-default.css"> </head> <body> <div id="main"> <h1 class="page-title">Namespace: BIP39</h1> <section> <header> <h2>BIP39</h2> </header> <article> <div class="container-overview"> <div class="description"><p>BIP39 mnemonic and seed generation utilities</p> <p>Provides functionality for generating secure mnemonic phrases, validating checksums, and deriving cryptographic seeds according to the BIP39 standard.</p></div> <dl class="details"> <dt class="tag-source">Source:</dt> <dd class="tag-source"><ul class="dummy"><li> <a href="src_BIP39_bip39.js.html">src/BIP39/bip39.js</a>, <a href="src_BIP39_bip39.js.html#line22">line 22</a> </li></ul></dd> </dl> <h3>Example</h3> <pre class="prettyprint"><code>// Generate a random mnemonic and seed const { mnemonic, seed } = BIP39.random('my-passphrase'); // Validate an existing mnemonic const isValid = BIP39.checkSum(mnemonic); // Convert mnemonic to seed const seed = BIP39.mnemonic2seed(mnemonic, 'passphrase');</code></pre> </div> <h3 class="subsection-title">Methods</h3> <h4 class="name" id=".checkSum"><span class="type-signature">(static) </span>checkSum<span class="signature">(mnemonic<span class="signature-attributes">opt</span>)</span><span class="type-signature"> &rarr; {boolean}</span></h4> <div class="description"> <p>Validates the checksum of a BIP39 mnemonic phrase</p> <p>The validation process:</p> <ol> <li>Converts words back to 11-bit indices</li> <li>Concatenates all indices to reconstruct the binary data</li> <li>Splits into entropy (128 bits) and checksum (4 bits)</li> <li>Recalculates checksum from entropy using SHA256</li> <li>Compares calculated checksum with embedded checksum</li> </ol> </div> <h5>Parameters:</h5> <table class="params"> <thead> <tr> <th>Name</th> <th>Type</th> <th>Attributes</th> <th>Default</th> <th class="last">Description</th> </tr> </thead> <tbody> <tr> <td class="name"><code>mnemonic</code></td> <td class="type"> <span class="param-type">string</span> </td> <td class="attributes"> &lt;optional><br> </td> <td class="default"> '' </td> <td class="description last"><p>Space-separated mnemonic phrase to validate</p></td> </tr> </tbody> </table> <dl class="details"> <dt class="tag-source">Source:</dt> <dd class="tag-source"><ul class="dummy"><li> <a href="src_BIP39_bip39.js.html">src/BIP39/bip39.js</a>, <a href="src_BIP39_bip39.js.html#line122">line 122</a> </li></ul></dd> </dl> <h5>Returns:</h5> <div class="param-desc"> <p>True if checksum is valid, false otherwise</p> </div> <dl> <dt> Type </dt> <dd> <span class="param-type">boolean</span> </dd> </dl> <h5>Example</h5> <pre class="prettyprint"><code>const validMnemonic = "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about"; const isValid = BIP39.checkSum(validMnemonic); // true const invalidMnemonic = "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon"; const isInvalid = BIP39.checkSum(invalidMnemonic); // false</code></pre> <h4 class="name" id=".mnemonic"><span class="type-signature">(static) </span>mnemonic<span class="signature">()</span><span class="type-signature"> &rarr; {string}</span></h4> <div class="description"> <p>Generates a random 12-word mnemonic phrase using cryptographically secure entropy</p> <p>The function:</p> <ol> <li>Generates 16 bytes (128 bits) of secure random entropy</li> <li>Computes SHA256 hash and takes first 4 bits as checksum</li> <li>Concatenates entropy + checksum to create 132 bits</li> <li>Splits into 12 groups of 11 bits each</li> <li>Maps each 11-bit value to a word from the BIP39 wordlist</li> </ol> </div> <dl class="details"> <dt class="tag-source">Source:</dt> <dd class="tag-source"><ul class="dummy"><li> <a href="src_BIP39_bip39.js.html">src/BIP39/bip39.js</a>, <a href="src_BIP39_bip39.js.html#line56">line 56</a> </li></ul></dd> </dl> <h5>Returns:</h5> <div class="param-desc"> <p>Space-separated 12-word mnemonic phrase</p> </div> <dl> <dt> Type </dt> <dd> <span class="param-type">string</span> </dd> </dl> <h5>Example</h5> <pre class="prettyprint"><code>const mnemonic = BIP39.mnemonic(); // Returns: "abandon ability able about above absent absorb abstract absurd abuse access accident"</code></pre> <h4 class="name" id=".mnemonic2seed"><span class="type-signature">(static) </span>mnemonic2seed<span class="signature">(mnemonic<span class="signature-attributes">opt</span>, passphrase<span class="signature-attributes">opt</span>)</span><span class="type-signature"> &rarr; {string}</span></h4> <div class="description"> <p>Converts a mnemonic phrase to a seed with checksum validation</p> <p>This method validates the mnemonic's checksum before deriving the seed, ensuring that only valid mnemonics are processed.</p> </div> <h5>Parameters:</h5> <table class="params"> <thead> <tr> <th>Name</th> <th>Type</th> <th>Attributes</th> <th>Default</th> <th class="last">Description</th> </tr> </thead> <tbody> <tr> <td class="name"><code>mnemonic</code></td> <td class="type"> <span class="param-type">string</span> </td> <td class="attributes"> &lt;optional><br> </td> <td class="default"> '' </td> <td class="description last"><p>Space-separated mnemonic phrase</p></td> </tr> <tr> <td class="name"><code>passphrase</code></td> <td class="type"> <span class="param-type">string</span> </td> <td class="attributes"> &lt;optional><br> </td> <td class="default"> '' </td> <td class="description last"><p>Optional passphrase for additional security</p></td> </tr> </tbody> </table> <dl class="details"> <dt class="tag-source">Source:</dt> <dd class="tag-source"><ul class="dummy"><li> <a href="src_BIP39_bip39.js.html">src/BIP39/bip39.js</a>, <a href="src_BIP39_bip39.js.html#line192">line 192</a> </li></ul></dd> </dl> <h5>Throws:</h5> <dl> <dt> <div class="param-desc"> <p>Throws 'invalid checksum' if mnemonic validation fails</p> </div> </dt> <dd></dd> <dt> <dl> <dt> Type </dt> <dd> <span class="param-type">string</span> </dd> </dl> </dt> <dd></dd> </dl> <h5>Returns:</h5> <div class="param-desc"> <p>Hex-encoded 64-byte seed</p> </div> <dl> <dt> Type </dt> <dd> <span class="param-type">string</span> </dd> </dl> <h5>Example</h5> <pre class="prettyprint"><code>const mnemonic = "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about"; const seed = BIP39.mnemonic2seed(mnemonic, "passphrase"); // With invalid mnemonic try { const seed = BIP39.mnemonic2seed("invalid mnemonic phrase"); } catch (error) { console.log(error); // "invalid checksum" }</code></pre> <h4 class="name" id=".random"><span class="type-signature">(static) </span>random<span class="signature">(passphrase<span class="signature-attributes">opt</span>)</span><span class="type-signature"> &rarr; {<a href="global.html#MnemonicResult">MnemonicResult</a>}</span></h4> <div class="description"> <p>Generates a random mnemonic with validated checksum and derives its seed</p> <p>This is a convenience method that combines mnemonic generation and seed derivation with built-in checksum validation for additional security.</p> </div> <h5>Parameters:</h5> <table class="params"> <thead> <tr> <th>Name</th> <th>Type</th> <th>Attributes</th> <th>Default</th> <th class="last">Description</th> </tr> </thead> <tbody> <tr> <td class="name"><code>passphrase</code></td> <td class="type"> <span class="param-type">string</span> </td> <td class="attributes"> &lt;optional><br> </td> <td class="default"> '' </td> <td class="description last"><p>Optional passphrase for seed derivation</p></td> </tr> </tbody> </table> <dl class="details"> <dt class="tag-source">Source:</dt> <dd class="tag-source"><ul class="dummy"><li> <a href="src_BIP39_bip39.js.html">src/BIP39/bip39.js</a>, <a href="src_BIP39_bip39.js.html#line156">line 156</a> </li></ul></dd> </dl> <h5>Throws:</h5> <dl> <dt> <div class="param-desc"> <p>Throws 'invalid checksum' if generated mnemonic fails validation</p> </div> </dt> <dd></dd> <dt> <dl> <dt> Type </dt> <dd> <span class="param-type">string</span> </dd> </dl> </dt> <dd></dd> </dl> <h5>Returns:</h5> <div class="param-desc"> <p>Object containing both mnemonic and seed</p> </div> <dl> <dt> Type </dt> <dd> <span class="param-type"><a href="global.html#MnemonicResult">MnemonicResult</a></span> </dd> </dl> <h5>Example</h5> <pre class="prettyprint"><code>const { mnemonic, seed } = BIP39.random('my-secure-passphrase'); console.log(mnemonic); // "word1 word2 word3 ..." console.log(seed); // "a1b2c3d4e5f6..."</code></pre> <h4 class="name" id=".seed"><span class="type-signature">(static) </span>seed<span class="signature">(mnemonic<span class="signature-attributes">opt</span>, passphrase<span class="signature-attributes">opt</span>)</span><span class="type-signature"> &rarr; {string}</span></h4> <div class="description"> <p>Derives a cryptographic seed from a mnemonic phrase using PBKDF2</p> <p>Uses PBKDF2-HMAC-SHA512 with 2048 iterations as specified in BIP39. The salt is constructed as &quot;mnemonic&quot; + passphrase.</p> </div> <h5>Parameters:</h5> <table class="params"> <thead> <tr> <th>Name</th> <th>Type</th> <th>Attributes</th> <th>Default</th> <th class="last">Description</th> </tr> </thead> <tbody> <tr> <td class="name"><code>mnemonic</code></td> <td class="type"> <span class="param-type">string</span> </td> <td class="attributes"> &lt;optional><br> </td> <td class="default"> '' </td> <td class="description last"><p>Space-separated mnemonic phrase</p></td> </tr> <tr> <td class="name"><code>passphrase</code></td> <td class="type"> <span class="param-type">string</span> </td> <td class="attributes"> &lt;optional><br> </td> <td class="default"> '' </td> <td class="description last"><p>Optional passphrase for additional security</p></td> </tr> </tbody> </table> <dl class="details"> <dt class="tag-source">Source:</dt> <dd class="tag-source"><ul class="dummy"><li> <a href="src_BIP39_bip39.js.html">src/BIP39/bip39.js</a>, <a href="src_BIP39_bip39.js.html#line89">line 89</a> </li></ul></dd> </dl> <h5>Returns:</h5> <div class="param-desc"> <p>Hex-encoded 64-byte (512-bit) seed</p> </div> <dl> <dt> Type </dt> <dd> <span class="param-type">string</span> </dd> </dl> <h5>Example</h5> <pre class="prettyprint"><code>const mnemonic = "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about"; const seed = BIP39.seed(mnemonic, "my-passphrase"); // Returns 128-character hex string</code></pre> </article> </section> <section> <header> <h2>BIP39</h2> </header> <article> <div class="container-overview"> <div class="description"><p>BIP39 mnemonic phrase and seed generation utilities</p></div> <dl class="details"> <dt class="tag-source">Source:</dt> <dd class="tag-source"><ul class="dummy"><li> <a href="index.js.html">index.js</a>, <a href="index.js.html#line108">line 108</a> </li></ul></dd> </dl> </div> <h3 class="subsection-title">Methods</h3> <h4 class="name" id=".checkSum"><span class="type-signature">(static) </span>checkSum<span class="signature">(mnemonic<span class="signature-attributes">opt</span>)</span><span class="type-signature"> &rarr; {boolean}</span></h4> <div class="description"> <p>Validates the checksum of a BIP39 mnemonic phrase</p> <p>The validation process:</p> <ol> <li>Converts words back to 11-bit indices</li> <li>Concatenates all indices to reconstruct the binary data</li> <li>Splits into entropy (128 bits) and checksum (4 bits)</li> <li>Recalculates checksum from entropy using SHA256</li> <li>Compares calculated checksum with embedded checksum</li> </ol> </div> <h5>Parameters:</h5> <table class="params"> <thead> <tr> <th>Name</th> <th>Type</th> <th>Attributes</th> <th>Default</th> <th class="last">Description</th> </tr> </thead> <tbody> <tr> <td class="name"><code>mnemonic</code></td> <td class="type"> <span class="param-type">string</span> </td> <td class="attributes"> &lt;optional><br> </td> <td class="default"> '' </td> <td class="description last"><p>Space-separated mnemonic phrase to validate</p></td> </tr> </tbody> </table> <dl class="details"> <dt class="tag-source">Source:</dt> <dd class="tag-source"><ul class="dummy"><li> <a href="src_BIP39_bip39.js.html">src/BIP39/bip39.js</a>, <a href="src_BIP39_bip39.js.html#line122">line 122</a> </li></ul></dd> </dl> <h5>Returns:</h5> <div class="param-desc"> <p>True if checksum is valid, false otherwise</p> </div> <dl> <dt> Type </dt> <dd> <span class="param-type">boolean</span> </dd> </dl> <h5>Example</h5> <pre class="prettyprint"><code>const validMnemonic = "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about"; const isValid = BIP39.checkSum(validMnemonic); // true const invalidMnemonic = "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon"; const isInvalid = BIP39.checkSum(invalidMnemonic); // false</code></pre> <h4 class="name" id=".mnemonic"><span class="type-signature">(static) </span>mnemonic<span class="signature">()</span><span class="type-signature"> &rarr; {string}</span></h4> <div class="description"> <p>Generates a random 12-word mnemonic phrase using cryptographically secure entropy</p> <p>The function:</p> <ol> <li>Generates 16 bytes (128 bits) of secure random entropy</li> <li>Computes SHA256 hash and takes first 4 bits as checksum</li> <li>Concatenates entropy + checksum to create 132 bits</li> <li>Splits into 12 groups of 11 bits each</li> <li>Maps each 11-bit value to a word from the BIP39 wordlist</li> </ol> </div> <dl class="details"> <dt class="tag-source">Source:</dt> <dd class="tag-source"><ul class="dummy"><li> <a href="src_BIP39_bip39.js.html">src/BIP39/bip39.js</a>, <a href="src_BIP39_bip39.js.html#line56">line 56</a> </li></ul></dd> </dl> <h5>Returns:</h5> <div class="param-desc"> <p>Space-separated 12-word mnemonic phrase</p> </div> <dl> <dt> Type </dt> <dd> <span class="param-type">string</span> </dd> </dl> <h5>Example</h5> <pre class="prettyprint"><code>const mnemonic = BIP39.mnemonic(); // Returns: "abandon ability able about above absent absorb abstract absurd abuse access accident"</code></pre> <h4 class="name" id=".mnemonic2seed"><span class="type-signature">(static) </span>mnemonic2seed<span class="signature">(mnemonic<span class="signature-attributes">opt</span>, passphrase<span class="signature-attributes">opt</span>)</span><span class="type-signature"> &rarr; {string}</span></h4> <div class="description"> <p>Converts a mnemonic phrase to a seed with checksum validation</p> <p>This method validates the mnemonic's checksum before deriving the seed, ensuring that only valid mnemonics are processed.</p> </div> <h5>Parameters:</h5> <table class="params"> <thead> <tr> <th>Name</th> <th>Type</th> <th>Attributes</th> <th>Default</th> <th class="last">Description</th> </tr> </thead> <tbody> <tr> <td class="name"><code>mnemonic</code></td> <td class="type"> <span class="param-type">string</span> </td> <td class="attributes"> &lt;optional><br> </td> <td class="default"> '' </td> <td class="description last"><p>Space-separated mnemonic phrase</p></td> </tr> <tr> <td class="name"><code>passphrase</code></td> <td class="type"> <span class="param-type">string</span> </td> <td class="attributes"> &lt;optional><br> </td> <td class="default"> '' </td> <td class="description last"><p>Optional passphrase for additional security</p></td> </tr> </tbody> </table> <dl class="details"> <dt class="tag-source">Source:</dt> <dd class="tag-source"><ul class="dummy"><li> <a href="src_BIP39_bip39.js.html">src/BIP39/bip39.js</a>, <a href="src_BIP39_bip39.js.html#line192">line 192</a> </li></ul></dd> </dl> <h5>Throws:</h5> <dl> <dt> <div class="param-desc"> <p>Throws 'invalid checksum' if mnemonic validation fails</p> </div> </dt> <dd></dd> <dt> <dl> <dt> Type </dt> <dd> <span class="param-type">string</span> </dd> </dl> </dt> <dd></dd> </dl> <h5>Returns:</h5> <div class="param-desc"> <p>Hex-encoded 64-byte seed</p> </div> <dl> <dt> Type </dt> <dd> <span class="param-type">string</span> </dd> </dl> <h5>Example</h5> <pre class="prettyprint"><code>const mnemonic = "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about"; const seed = BIP39.mnemonic2seed(mnemonic, "passphrase"); // With invalid mnemonic try { const seed = BIP39.mnemonic2seed("invalid mnemonic phrase"); } catch (error) { console.log(error); // "invalid checksum" }</code></pre> <h4 class="name" id=".random"><span class="type-signature">(static) </span>random<span class="signature">(passphrase<span class="signature-attributes">opt</span>)</span><span class="type-signature"> &rarr; {<a href="global.html#MnemonicResult">MnemonicResult</a>}</span></h4> <div class="description"> <p>Generates a random mnemonic with validated checksum and derives its seed</p> <p>This is a convenience method that combines mnemonic generation and seed derivation with built-in checksum validation for additional security.</p> </div> <h5>Parameters:</h5> <table class="params"> <thead> <tr> <th>Name</th> <th>Type</th> <th>Attributes</th> <th>Default</th> <th class="last">Description</th> </tr> </thead> <tbody> <tr> <td class="name"><code>passphrase</code></td> <td class="type"> <span class="param-type">string</span> </td> <td class="attributes"> &lt;optional><br> </td> <td class="default"> '' </td> <td class="description last"><p>Optional passphrase for seed derivation</p></td> </tr> </tbody> </table> <dl class="details"> <dt class="tag-source">Source:</dt> <dd class="tag-source"><ul class="dummy"><li> <a href="src_BIP39_bip39.js.html">src/BIP39/bip39.js</a>, <a href="src_BIP39_bip39.js.html#line156">line 156</a> </li></ul></dd> </dl> <h5>Throws:</h5> <dl> <dt> <div class="param-desc"> <p>Throws 'invalid checksum' if generated mnemonic fails validation</p> </div> </dt> <dd></dd> <dt> <dl> <dt> Type </dt> <dd> <span class="param-type">string</span> </dd> </dl> </dt> <dd></dd> </dl> <h5>Returns:</h5> <div class="param-desc"> <p>Object containing both mnemonic and seed</p> </div> <dl> <dt> Type </dt> <dd> <span class="param-type"><a href="global.html#MnemonicResult">MnemonicResult</a></span> </dd> </dl> <h5>Example</h5> <pre class="prettyprint"><code>const { mnemonic, seed } = BIP39.random('my-secure-passphrase'); console.log(mnemonic); // "word1 word2 word3 ..." console.log(seed); // "a1b2c3d4e5f6..."</code></pre> <h4 class="name" id=".seed"><span class="type-signature">(static) </span>seed<span class="signature">(mnemonic<span class="signature-attributes">opt</span>, passphrase<span class="signature-attributes">opt</span>)</span><span class="type-signature"> &rarr; {string}</span></h4> <div class="description"> <p>Derives a cryptographic seed from a mnemonic phrase using PBKDF2</p> <p>Uses PBKDF2-HMAC-SHA512 with 2048 iterations as specified in BIP39. The salt is constructed as &quot;mnemonic&quot; + passphrase.</p> </div> <h5>Parameters:</h5> <table class="params"> <thead> <tr> <th>Name</th> <th>Type</th> <th>Attributes</th> <th>Default</th> <th class="last">Description</th> </tr> </thead> <tbody> <tr> <td class="name"><code>mnemonic</code></td> <td class="type"> <span class="param-type">string</span> </td> <td class="attributes"> &lt;optional><br> </td> <td class="default"> '' </td> <td class="description last"><p>Space-separated mnemonic phrase</p></td> </tr> <tr> <td class="name"><code>passphrase</code></td> <td class="type"> <span class="param-type">string</span> </td> <td class="attributes"> &lt;optional><br> </td> <td class="default"> '' </td> <td class="description last"><p>Optional passphrase for additional security</p></td> </tr> </tbody> </table> <dl class="details"> <dt class="tag-source">Source:</dt> <dd class="tag-source"><ul class="dummy"><li> <a href="src_BIP39_bip39.js.html">src/BIP39/bip39.js</a>, <a href="src_BIP39_bip39.js.html#line89">line 89</a> </li></ul></dd> </dl> <h5>Returns:</h5> <div class="param-desc"> <p>Hex-encoded 64-byte (512-bit) seed</p> </div> <dl> <dt> Type </dt> <dd> <span class="param-type">string</span> </dd> </dl> <h5>Example</h5> <pre class="prettyprint"><code>const mnemonic = "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about"; const seed = BIP39.seed(mnemonic, "my-passphrase"); // Returns 128-character hex string</code></pre> </article> </section> </div> <nav> <h2><a href="index.html">Home</a></h2><h3>Namespaces</h3><ul><li><a href="AddressFormats.html">AddressFormats</a></li><li><a href="BECH32.html">BECH32</a></li><li><a href="BIP32.html">BIP32</a></li><li><a href="BIP39.html">BIP39</a></li><li><a href="CASH_ADDR.html">CASH_ADDR</a></li><li><a href="ECDSA.html">ECDSA</a></li><li><a href="KeyDecoding.html">KeyDecoding</a></li><li><a href="Signatures.html">Signatures</a></li><li><a href="ThresholdCrypto.html">ThresholdCrypto</a></li><li><a href="Utilities.html">Utilities</a></li><li><a href="Wallets.html">Wallets</a></li><li><a href="schnorr_sig.html">schnorr_sig</a></li></ul><h3>Classes</h3><ul><li><a href="Custodial_Wallet.html">Custodial_Wallet</a></li><li><a href="Non_Custodial_Wallet.html">Non_Custodial_Wallet</a></li><li><a href="Polynomial.html">Polynomial</a></li><li><a href="ThresholdSignature.html">ThresholdSignature</a></li></ul><h3>Global</h3><ul><li><a href="global.html#CHARSET">CHARSET</a></li><li><a href="global.html#FEATURES">FEATURES</a></li><li><a href="global.html#NETWORKS">NETWORKS</a></li><li><a href="global.html#address">address</a></li><li><a href="global.html#b58encode">b58encode</a></li><li><a href="global.html#base32_encode">base32_encode</a></li><li><a href="global.html#derive">derive</a></li><li><a href="global.html#fromSeed">fromSeed</a></li><li><a href="global.html#hdKey">hdKey</a></li><li><a href="global.html#legacyAddress_decode">legacyAddress_decode</a></li><li><a href="global.html#privateKey_decode">privateKey_decode</a></li><li><a href="global.html#rmd160">rmd160</a></li><li><a href="global.html#standardKey">standardKey</a></li><li><a href="global.html#table">table</a></li></ul> </nav> <br class="clear"> <footer> Documentation generated by <a href="https://github.com/jsdoc/jsdoc">JSDoc 4.0.4</a> on Wed Jun 04 2025 02:36:39 GMT-0400 (Eastern Daylight Time) </footer> <script> prettyPrint(); </script> <script src="scripts/linenumber.js"> </script> </body> </html>