# Crypto Module

Simple, fast crypto service. Import

```
import crypto from 'crypto';
```

### Methods

[md5(string)](https://docs.medable.com/reference#section-md5-string-)\
[md5Hmac(string, string)](https://docs.medable.com/reference#section-md5hmac-string-string-)\
[sha1(string)](https://docs.medable.com/reference#section-sha1-string-)\
[sha1Hmac(string, string)](https://docs.medable.com/reference#section-sha1hmac-string-string-)\
[sha256(string)](https://docs.medable.com/reference#section-sha256-string-)\
[sha256Hmac(string, string)](https://docs.medable.com/reference#section-sha256hmac-string-string-)\
[sha512(string)](https://docs.medable.com/reference#section-sha512-string-)\
[sha512Hmac(string, string)](https://docs.medable.com/reference#section-sha512hmac-string-string-)\
[rsa.encrypt(apiKey, payload, outputEncoding=buffer, inputEncoding=utf8)](https://docs.medable.com/reference#section-rsa-encrypt-apikey-payload-outputencoding-buffer-inputencoding-utf8-)\
[rsa.decrypt(apiKey, payload, outputEncoding=utf8)](https://docs.medable.com/reference#section-rsa-decrypt-apikey-payload-outputencoding-utf8-)

### md5(string)

**Arguments**

* `value` (String) string to hash

**Returns**

* `value` (String) hash value

### md5Hmac(string, string)

**Arguments**

* `secret` (String) secret key
* `value` (String) string to hash

**Returns**

* `value` (String) hash value

### sha1(string)

**Arguments**

* `value` (String) string to hash

**Returns**

* `value` (String) hash value

### sha1Hmac(string, string)

**Arguments**

* `secret` (String) secret key
* `value` (String) string to hash

**Returns**

* `value` (String) hash value

### sha256(string)

**Arguments**

* `value` (String) string to hash

**Returns**

* `value` (String) hash value

### sha256Hmac(string, string)

**Arguments**

* `secret` (String) secret key
* `value` (String) string to hash

**Returns**

* `value` (String) hash value

### sha512(string)

**Arguments**

* `value` (String) string to hash

**Returns**

* `value` (String) hash value

### sha512Hmac(string, string)

**Arguments**

* `secret` (String) secret key
* `value` (String) string to hash

**Returns**

* `value` (String) hash value

### rsa.encrypt(apiKey, payload, outputEncoding=buffer, inputEncoding=utf8)

Encrypt a JSON object or a string using an app's RSA public key

**Arguments**

* `apiKey` (String) The app api key that holds the key pair
* `payload` (String|Object) string or JSON object to encrypt
* `outputEncoding` (String=buffer) Support output encodings are hex, base64, buffer and binary
* `inputEncoding` (String=utf8) Supported input encodings are hex, base64 and utf8

**Returns**

* `value` (Buffer|String) encrypted value

### rsa.decrypt(apiKey, payload, outputEncoding=utf8)

Decrypt a buffer or base64 encoded string app's RSA private key

**Arguments**

* `apiKey` (String) The app api key that holds the key pair
* `payload` (String|Buffer) string or buffer to decrypt
* `outputEncoding` (String=utf8) Support output encodings are hex, base64, buffer, binary, utf8 and json. If `json` is specified, decrypt will parse the resulting string..

**Returns**

* `value` (String|Object) decrypted value

### Examples

Crypto Example

```
import crypto, { rsa } from 'crypto'

const apiKey = 'Lndee3dK9ZbMphlqQDtW9b', 
      encrypted = rsa.encrypt(
        apiKey, 
        'Seymour R. Goff',
        'base64'
      )

return {
  sha256: crypto.sha256("Seymour R. Goff"),
  sha256Hmac: crypto.sha256Hmac("loose lips might sink ships", "Seymour R. Goff"),
  encrypted: encrypted,
  decrypted: rsa.decrypt(apiKey, encrypted)
}
```

Crypto Example Response

```
{
    "object": "result",
    "data": {
        "decrypted": "Seymour R. Goff",
        "encrypted": "c8ZT8Cv4dH...xuR3BuTQ==",
        "sha256": "bdd3e9c4cf...19200b8120",
        "sha256Hmac": "4576a34032...7e7a52e139"
    }
}
```