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<!doctype html> <html lang="en"> <head> <title>Code coverage report for src/security/encryption.ts</title> <meta charset="utf-8" /> <link rel="stylesheet" href="../../prettify.css" /> <link rel="stylesheet" href="../../base.css" /> <link rel="shortcut icon" type="image/x-icon" href="../../favicon.png" /> <meta name="viewport" content="width=device-width, initial-scale=1" /> <style type='text/css'> .coverage-summary .sorter { background-image: url(../../sort-arrow-sprite.png); } </style> </head> <body> <div class='wrapper'> <div class='pad1'> <h1><a href="../../index.html">All files</a> / <a href="index.html">src/security</a> encryption.ts</h1> <div class='clearfix'> <div class='fl pad1y space-right2'> 78.75% Statements 63/80 </div> <div class='fl pad1y space-right2'> 68.42% Branches 39/57 </div> <div class='fl pad1y space-right2'> 100% Functions 7/7 </div> <div class='fl pad1y space-right2'> 78.75% Lines 63/80 </div> </div> Press n or j to go to the next uncovered block, b, p or k for the previous block. <template id="filterTemplate"> <div class="quiet"> Filter: <input type="search" id="fileSearch"> </div> </template> </div> <div class='status-line medium'></div> <pre><table class="coverage"> <tr><td class="line-count quiet"><a name='L1'></a><a href='#L1'>1</a> <a name='L2'></a><a href='#L2'>2</a> <a name='L3'></a><a href='#L3'>3</a> <a name='L4'></a><a href='#L4'>4</a> <a name='L5'></a><a href='#L5'>5</a> <a name='L6'></a><a href='#L6'>6</a> <a name='L7'></a><a href='#L7'>7</a> <a name='L8'></a><a href='#L8'>8</a> <a name='L9'></a><a href='#L9'>9</a> <a name='L10'></a><a href='#L10'>10</a> <a name='L11'></a><a href='#L11'>11</a> <a name='L12'></a><a href='#L12'>12</a> <a name='L13'></a><a href='#L13'>13</a> <a name='L14'></a><a href='#L14'>14</a> <a name='L15'></a><a href='#L15'>15</a> <a name='L16'></a><a href='#L16'>16</a> <a name='L17'></a><a href='#L17'>17</a> <a name='L18'></a><a href='#L18'>18</a> <a name='L19'></a><a href='#L19'>19</a> <a name='L20'></a><a 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name='L326'></a><a href='#L326'>326</a> <a name='L327'></a><a href='#L327'>327</a> <a name='L328'></a><a href='#L328'>328</a> <a name='L329'></a><a href='#L329'>329</a> <a name='L330'></a><a href='#L330'>330</a> <a name='L331'></a><a href='#L331'>331</a> <a name='L332'></a><a href='#L332'>332</a> <a name='L333'></a><a href='#L333'>333</a></td><td class="line-coverage quiet">                      1x 1x                                       22x 19x 19x             18x   18x                                 9x 9x 1x             8x 8x     8x         8x           8x       8x           8x         8x                         8x 7x     8x   1x 1x                           8x 8x               8x 1x             7x 7x 7x 7x         7x       7x     7x 6x       6x         5x   3x 1x   2x                       33x 33x   30x                 3x                                                                   36x                   22x             22x 1x           21x             21x             21x             21x 20x               21x 21x   19x 1x         18x     1x           1x           1x           1x     1x              </td><td class="text"><pre class="prettyprint lang-js">import { createCipheriv, createDecipheriv, randomBytes, scrypt, pbkdf2 } from 'crypto'; import { promisify } from 'util'; import { EncryptionConfig, EncryptionAlgorithm, KeyDerivationFunction, EncryptedData, SecurityError, SecurityErrorType } from './types.js';   const scryptAsync = promisify(scrypt); const pbkdf2Async = promisify(pbkdf2);   /** * Encryption manager options */ interface EncryptionManagerOptions { config: EncryptionConfig; masterKey: string; }   /** * Encryption manager * Handles data encryption and decryption using configured algorithms */ export class EncryptionManager { private config: EncryptionConfig; private masterKey: string; private derivedKey?: Buffer;   constructor(options: EncryptionManagerOptions) { this.validateConfig(options.config); this.config = options.config; this.masterKey = options.masterKey; }   /** * Initialize encryption manager */ public async initialize(): Promise<void> { try { // Derive key from master key this.derivedKey = await this.deriveKey( this.masterKey, randomBytes(this.config.keyDerivation.saltLength || 32) ); } catch (error) { throw new SecurityError( SecurityErrorType.INVALID_KEY, 'Failed to initialize encryption manager', error ); } }   /** * Encrypt data */ public async encrypt(data: string): Promise<EncryptedData> { try { if (!this.config.enabled) { throw new SecurityError( SecurityErrorType.ENCRYPTION_FAILED, 'Encryption is disabled' ); }   // Generate IV and salt const iv = randomBytes(this.config.ivLength); const salt = randomBytes(this.config.keyDerivation.saltLength || 32);   // Derive key const key = await this.deriveKey(this.masterKey, salt);   // Create cipher // Create cipher with correct options let cipher; Iif (this.config.algorithm === EncryptionAlgorithm.CHACHA20_POLY1305) { // @ts-ignore: Node.js types don't include chacha20-poly1305 options cipher = createCipheriv(this.config.algorithm, key, iv, { authTagLength: this.config.tagLength || 16 }); } else { cipher = createCipheriv(this.config.algorithm, key, iv); }   // Encrypt data const encrypted = Buffer.concat([ cipher.update(data, 'utf8'), cipher.final() ]);   // Get authentication tag if using AEAD const tag = this.isAEAD(this.config.algorithm) ? (cipher as any).getAuthTag() : undefined;   // Format encrypted data const result: EncryptedData = { algorithm: this.config.algorithm, iv: iv.toString('base64'), salt: salt.toString('base64'), data: encrypted.toString('base64'), keyDerivation: { function: this.config.keyDerivation.function, iterations: this.config.keyDerivation.iterations, memory: this.config.keyDerivation.memory, parallelism: this.config.keyDerivation.parallelism } };   if (tag) { result.tag = tag.toString('base64'); }   return result; } catch (error) { if (error instanceof SecurityError) { throw error; } throw new SecurityError( SecurityErrorType.ENCRYPTION_FAILED, 'Failed to encrypt data', error ); } }   /** * Decrypt data */ public async decrypt(encrypted: EncryptedData): Promise<string> { try { Iif (!this.config.enabled) { throw new SecurityError( SecurityErrorType.DECRYPTION_FAILED, 'Encryption is disabled' ); }   // Validate algorithm if (encrypted.algorithm !== this.config.algorithm) { throw new SecurityError( SecurityErrorType.DECRYPTION_FAILED, 'Algorithm mismatch' ); }   // Parse components const iv = Buffer.from(encrypted.iv, 'base64'); const salt = Buffer.from(encrypted.salt, 'base64'); const data = Buffer.from(encrypted.data, 'base64'); const tag = encrypted.tag ? Buffer.from(encrypted.tag, 'base64') : undefined;   // Derive key const key = await this.deriveKey(this.masterKey, salt);   // Create decipher // Create decipher const decipher = createDecipheriv(encrypted.algorithm, key, iv);   // Set auth tag if using AEAD if (this.isAEAD(encrypted.algorithm) && tag) { (decipher as any).setAuthTag(tag); }   // Decrypt data const decrypted = Buffer.concat([ decipher.update(data), decipher.final() ]);   return decrypted.toString('utf8'); } catch (error) { if (error instanceof SecurityError) { throw error; } throw new SecurityError( SecurityErrorType.DECRYPTION_FAILED, 'Failed to decrypt data', error ); } }   /** * Derive key using configured KDF */ private async deriveKey(password: string, salt: Buffer): Promise<Buffer> { try { switch (this.config.keyDerivation.function) { case KeyDerivationFunction.PBKDF2: return pbkdf2Async( password, salt, this.config.keyDerivation.iterations || 100000, this.config.keyLength, 'sha512' );   case KeyDerivationFunction.SCRYPT: return scryptAsync( password, salt, this.config.keyLength ) as Promise<Buffer>;   case KeyDerivationFunction.ARGON2: throw new SecurityError( SecurityErrorType.INVALID_CONFIG, 'Argon2 is not yet supported' );   default: throw new SecurityError( SecurityErrorType.INVALID_CONFIG, 'Invalid key derivation function' ); } } catch (error) { Iif (error instanceof SecurityError) { throw error; } throw new SecurityError( SecurityErrorType.INVALID_KEY, 'Failed to derive key', error ); } }   /** * Check if algorithm is AEAD */ private isAEAD(algorithm: EncryptionAlgorithm): boolean { return [ EncryptionAlgorithm.AES_256_GCM, EncryptionAlgorithm.CHACHA20_POLY1305 ].includes(algorithm); }   /** * Validate encryption config */ private validateConfig(config: EncryptionConfig): void { Iif (!config) { throw new SecurityError( SecurityErrorType.INVALID_CONFIG, 'Missing encryption config' ); }   if (!Object.values(EncryptionAlgorithm).includes(config.algorithm)) { throw new SecurityError( SecurityErrorType.INVALID_CONFIG, 'Invalid encryption algorithm' ); }   Iif (!Object.values(KeyDerivationFunction).includes(config.keyDerivation.function)) { throw new SecurityError( SecurityErrorType.INVALID_CONFIG, 'Invalid key derivation function' ); }   Iif (config.keyLength < 16 || config.keyLength > 64) { throw new SecurityError( SecurityErrorType.INVALID_CONFIG, 'Invalid key length' ); }   Iif (config.ivLength < 12 || config.ivLength > 32) { throw new SecurityError( SecurityErrorType.INVALID_CONFIG, 'Invalid IV length' ); }   if (this.isAEAD(config.algorithm)) { Iif (!config.tagLength || config.tagLength < 12 || config.tagLength > 32) { throw new SecurityError( SecurityErrorType.INVALID_CONFIG, 'Invalid tag length for AEAD algorithm' ); } }   const kdf = config.keyDerivation; switch (kdf.function) { case KeyDerivationFunction.PBKDF2: if (!kdf.iterations || kdf.iterations < 10000) { throw new SecurityError( SecurityErrorType.INVALID_CONFIG, 'Invalid PBKDF2 iterations' ); } break;   case KeyDerivationFunction.SCRYPT: Iif (!kdf.iterations || kdf.iterations < 16384) { throw new SecurityError( SecurityErrorType.INVALID_CONFIG, 'Invalid scrypt iterations (N)' ); } Iif (!kdf.memory || kdf.memory < 8) { throw new SecurityError( SecurityErrorType.INVALID_CONFIG, 'Invalid scrypt memory (r)' ); } Iif (!kdf.parallelism || kdf.parallelism < 1) { throw new SecurityError( SecurityErrorType.INVALID_CONFIG, 'Invalid scrypt parallelism (p)' ); } break;   case KeyDerivationFunction.ARGON2: throw new SecurityError( SecurityErrorType.INVALID_CONFIG, 'Argon2 is not yet supported' ); } } }  </pre></td></tr></table></pre> <div class='push'></div> </div> <div class='footer quiet pad2 space-top1 center small'> Code coverage generated by <a href="https://istanbul.js.org/" target="_blank" rel="noopener noreferrer">istanbul</a> at 2025-08-09T08:16:37.973Z </div> <script src="../../prettify.js"></script> <script> window.onload = function () { prettyPrint(); }; </script> <script src="../../sorter.js"></script> <script src="../../block-navigation.js"></script> </body> </html>

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