api

Classes

FormUrlEncoded

TeraBoxApp

Methods

(inner) signDownload(s1, s2) → {string}

Description:

• Generates a signed download token using a modified RC4-like algorithm This function implements a stream cipher similar to RC4 that:
  1. Initializes a permutation array using the secret key (s1)
  2. Generates a pseudorandom keystream
  3. XORs the input data (s2) with the keystream
  4. Returns the result as a Base64-encoded string

Source:

• api.js, line 110

Example

const signature = signDownload('secret-key', 'data-to-sign');
// Returns something like: "X3p8YFJjUA=="

Parameters:

Returns:

Type

string

(inner) checkMd5val(md5) → {boolean}

Description:

• Validates whether a string is a properly formatted MD5 hash
  
  Checks if the input:
  1. Is exactly 32 characters long
  2. Contains only hexadecimal characters (a-f, 0-9)
  3. Is in lowercase
  
  Note: This only validates the format, not the cryptographic correctness of the hash.

Source:

• api.js, line 163

Example

checkMd5val('d41d8cd98f00b204e9800998ecf8427e') // returns true
checkMd5val('D41D8CD98F00B204E9800998ECF8427E') // returns false (uppercase)
checkMd5val('z41d8cd98f00b204e9800998ecf8427e') // returns false (invalid character)
checkMd5val('d41d8cd98f')                       // returns false (too short)

Parameters:

Returns:

Type

boolean

(inner) checkMd5arr(arr) → {boolean}

Description:

• Validates that all elements in an array are properly formatted MD5 hashes
  
  Checks if:
  1. The input is an array
  2. Every element in the array passes checkMd5val() validation
  (32-character hexadecimal strings in lowercase)

Source:

• api.js, line 187

See:

• Function CheckMd5Val for individual MD5 hash validation logic

Example

checkMd5arr(['d41d8cd98f00b204e9800998ecf8427e', '5d41402abc4b2a76b9719d911017c592']) // true
checkMd5arr(['d41d8cd98f00b204e9800998ecf8427e', 'invalid']) // false
checkMd5arr('not an array') // false
checkMd5arr([]) // false (empty array is considered invalid)

Parameters:

Returns:

Type

boolean

(inner) decodeMd5(md5) → {string}

Description:

• Applies a custom transformation to what appears to be an MD5 hash
  
  This function performs a series of reversible transformations on an input string
  that appears to be an MD5 hash (32 hexadecimal characters). The transformation includes:
  1. Character restoration at position 9
  2. XOR operation with position-dependent values
  3. Byte reordering of the result

Source:

• api.js, line 212

Example

decodeMd5('a1b2c3d4e5f6g7h8i9j0k1l2m3n4o5p6') // returns transformed value
decodeMd5('short') // returns 'short' (unchanged)

Parameters:

Throws:

Returns:

Type

string

(inner) changeBase64Type(str, modeopt) → {string}

Description:

• Converts between standard and URL-safe Base64 encoding formats
  
  Base64 strings may contain '+', '/' and '=' characters that need to be replaced
  for safe use in URLs. This function provides bidirectional conversion:
  - Mode 1: Converts to URL-safe Base64 (RFC 4648 §5)
  - Mode 2: Converts back to standard Base64

Source:

• api.js, line 260

See:

• RFC 4648 §5 for URL-safe Base64

Example

// To URL-safe Base64
changeBase64Type('a+b/c=') // returns 'a-b_c='

// To standard Base64
changeBase64Type('a-b_c=', 2) // returns 'a+b/c='

Parameters:

Returns:

Type

string

(inner) decryptAES(pp1, pp2) → {string}

Description:

• Decrypts AES-128-CBC encrypted data using provided parameters
  
  This function:
  1. Converts both parameters from URL-safe Base64 to standard Base64
  2. Extracts the IV (first 16 bytes) and ciphertext from pp1
  3. Uses pp2 as the decryption key
  4. Performs AES-128-CBC decryption

Source:

• api.js, line 291

See:

• Function ChangeBase64Type for Base64 format conversion

Example

// Example usage (with actual encrypted data)
const decrypted = decryptAES(
    'MTIzNDU2Nzg5MDEyMzQ1Ng==...',  // IV + ciphertext
    'c2VjcmV0LWtleS1kYXRhCg=='      // Key
);

Parameters:

Requires:

• module:crypto

Throws:

May throw errors for invalid inputs or decryption failures

Type

Error

Returns:

Type

string

(inner) encryptRSA(message, publicKeyPEM, modeopt) → {string}

Description:

• Encrypts data using RSA with a public key, with optional MD5 preprocessing
  
  Supports two encryption modes:
  1. Direct encryption of the message (default)
  2. MD5 hash preprocessing (applies MD5 + length padding before encryption)

Source:

• api.js, line 335

Example

// Direct encryption
encryptRSA('secret message', publicKey);

// With MD5 preprocessing
encryptRSA('secret message', publicKey, 2);

Parameters:

Requires:

• module:crypto

Throws:

May throw errors for invalid keys or encryption failures

Type

Error

Returns:

Type

string

(inner) prandGen(clientopt, seval, encpwd, email, browseridopt, random) → {string}

Description:

• Generates a pseudo-random SHA-1 hash from combined client parameters
  
  Creates a deterministic hash value by combining multiple client-specific parameters.
  This is typically used for generating session tokens or unique identifiers.

Source:

• api.js, line 380

Example

// Basic usage
const token = prandGen('web', 'session123', 'encryptedPwd', 'user@example.com', 'browser123', 'randomValue');

// With default client and empty browserid
const token = prandGen(undefined, 'session123', 'encryptedPwd', 'user@example.com', '', 'randomValue');

Parameters:

Requires:

• module:crypto

Returns:

Type

string