Encrypt
Verify
Verify if a plaintext matches a specific Argon2 hash, ensuring secure login validation.
FAQ - Frequently Asked Questions
What is Argon2?
Argon2 is a key derivation function designed to protect against brute-force attacks by requiring significant memory and computational resources. It is used in modern password hashing systems to enhance security.
Explanation of Fields
Password
This is the input string that will be hashed. It must be provided, and cannot be empty.
Validation: The password field must be non-empty.
Salt
A salt is a random value added to the input password before hashing. It helps prevent rainbow table attacks by ensuring that identical passwords produce different hashes. The salt must be at least 8 characters long.
Validation: The salt must be at least 8 characters long.
Time Cost (Iterations)
This parameter specifies the number of iterations or the amount of time spent computing the hash. The higher the number, the longer it takes to compute the hash, making it more resistant to brute-force attacks.
Validation: Time cost must be a positive integer.
Memory Cost (RAM Usage)
This parameter defines the amount of memory (in KiB) required for hashing. Increasing the memory cost makes the function more resistant to attacks that use parallelism.
Validation: Memory cost must be a positive integer and at least 8 times the parallelism value.
Parallelism
Parallelism defines the number of threads used to compute the hash. Higher parallelism increases the computational resources required to break the hash, making the system more secure.
Validation: Parallelism must be a positive integer greater than or equal to 1.
Hash Length
This parameter specifies the length (in bytes) of the final hash output. A minimum length of 4 bytes is required.
Validation: Hash length must be a positive integer and at least 4 bytes long.
Output Type
This defines the format of the hash output. The available options are "hex", "binary", or "encoded". By default, the output is in hexadecimal format.
Validation: The output type must be one of "hex", "binary", or "encoded".
Argon2 Type
Argon2 has three main types: Argon2d, Argon2i, and Argon2id. Each type offers different levels of protection against certain types of attacks. Argon2id is a hybrid of the other two and is the most commonly recommended.
Validation: The type must be specified as "argon2d", "argon2i", or "argon2id".
Hash Details
Argon2 is highly configurable with time cost (number of iterations), memory cost (RAM needed), and parallelism (number of threads). It has different variants such as Argon2d, Argon2i, and Argon2id, each offering different levels of resistance to various attacks.