Create a Databricks-backed secret scope in which secrets are stored in Databricks-managed storage and encrypted with a cloud-based specific encryption key. The scope name: Must be unique within a workspace. Must consist of alphanumeric characters, dashes, underscores, and periods, and may not exceed 128 characters. The 'API key' is a secret value with is shared between the server and the user. Normal MAC algorithms like HMAC can use arbitrary sequences of bits as key, so a key is easily generated by using /dev/urandom (Linux,.BSD, MacOS X), calling CryptGenRandom (Win32) or using java.security.SecureRandom (Java).
Welcome to the reCAPTCHA developer documentation.
reCAPTCHA protects you against spam and other types of automated abuse. Here, we explain how to addreCAPTCHA to your site or application.
Audience
This documentation is designed for people familiar with HTML forms, server-side processing or mobileapplication development. To install reCAPTCHA, you will probably need to edit some code.
We hope you find this documentation easy to follow. Make sure to join the reCAPTCHA developerforum to give feedback and discuss the API.
You can find a reCAPTCHA codelab here.
Overview
To start using reCAPTCHA, you need to sign up for an API keypair for your site. The key pair consists of a site key andsecret key. The site key is used to invoke reCAPTCHA service on your site or mobile application. Thesecret key authorizes communication between your application backend and the reCAPTCHA server toverify the user's response. The secret key needs to be kept safe forsecurity purposes.
First, choose the type of reCAPTCHA and then fill in authorized domainsor packagenames. After youaccept our terms of service, you can click Register button to get new API key pair.
Now please take the following steps to add reCAPTCHA to your site or mobile application:
- Choose the client side integration:
- reCAPTCHA v2
Key generators are constructed using one of the getInstance class methods of this class.
KeyGenerator objects are reusable, i.e., after a key has been generated, the same KeyGenerator object can be re-used to generate further keys.
There are two ways to generate a key: in an algorithm-independent manner, and in an algorithm-specific manner. The only difference between the two is the initialization of the object:
- Algorithm-Independent Initialization
All key generators share the concepts of a keysize and a source of randomness. There is an
initmethod in this KeyGenerator class that takes these two universally shared types of arguments. There is also one that takes just akeysizeargument, and uses the SecureRandom implementation of the highest-priority installed provider as the source of randomness (or a system-provided source of randomness if none of the installed providers supply a SecureRandom implementation), and one that takes just a source of randomness.Since no other parameters are specified when you call the above algorithm-independent
initmethods, it is up to the provider what to do about the algorithm-specific parameters (if any) to be associated with each of the keys. - Algorithm-Specific Initialization
For situations where a set of algorithm-specific parameters already exists, there are two
initmethods that have anAlgorithmParameterSpecargument. Openssl generate certificate with extended key usage form. One also has aSecureRandomargument, while the other uses the SecureRandom implementation of the highest-priority installed provider as the source of randomness (or a system-provided source of randomness if none of the installed providers supply a SecureRandom implementation).
In case the client does not explicitly initialize the KeyGenerator (via a call to an init method), each provider must supply (and document) a default initialization.
Every implementation of the Java platform is required to support the following standard KeyGenerator algorithms with the keysizes in parentheses:
Java Generate Api Key
- AES (128)
- DES (56)
- DESede (168)
- HmacSHA1
- HmacSHA256