Hashing vs encryption is a confusion about direction. People say “encrypt” when they pasted text into a hash box and received hex. They say “decrypt the hash” when they want the original sentence back. Those sentences name the wrong process. A hash is a digest. Encryption is a reversible transform that needs a key. Mixing the names is how a SHA-256 hex string is treated as a secret that someone can unlock later.
The Hash Generator on YallaSolve computes a digest in the browser with the Web Crypto subtle.digest API. It does not encrypt. It does not decrypt. It does not take a key. This article keeps the two jobs apart and states what that page actually supports.
A hash function maps an input of any size (within the page’s cap) to a fixed-size digest. SHA-256 always returns 32 bytes, shown as 64 lowercase hex characters. SHA-384 returns 48 bytes. SHA-512 returns 64 bytes. SHA-1 returns 20 bytes. The same input and the same algorithm produce the same digest. A one-character change produces a different digest. You cannot “decrypt” ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad back into abc. You can only hash abc again and compare.
Input on YallaSolve is encoded as UTF-8 with TextEncoder before the digest. Empty text is allowed. SHA-256 of an empty box is the published empty digest e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855. Line breaks are part of the input. Windows CRLF and Unix LF hash differently if you paste both. Unicode astral characters become multi-byte sequences. Two visually similar names from different scripts are different inputs. The page will not normalize to ASCII.
Encryption turns plaintext into ciphertext with a key. The holder of the matching key is supposed to be able to reverse the operation. AES-GCM, RSA-OAEP, and similar schemes are encryption. They have nonces, padding, and failure modes that a hex digest does not have. Hashing vs encryption is finished when you can say whether a key exists and whether reversal is the point. If there is no key and the output is a fixed-size hex string, you hashed.
YallaSolve’s Hash Generator does not implement encryption. It will not invent an AES mode, will not ask for a passphrase, and will not wrap the digest in a ciphertext format. If you needed to hide a value from a reader who should later recover it, this page is the wrong tool.
Supported algorithms are SHA-256 (the form default), SHA-384, SHA-512, and SHA-1. SHA-1 is labeled legacy. Collision attacks against SHA-1 are a known fact. Use it only to match an old checksum. Do not use it for a new integrity design. MD5 is not implemented. Web Crypto does not provide MD5, and the page will not add a second library to fake it. SHA-3, HMAC, and bcrypt are also absent. If a manifest asked for those, this generator will not print a matching digest.
Work stays in the tab. The text is not uploaded to an external hashing service. Input over 200,000 characters is refused so the tab does not freeze.
Do not store a user password as a bare SHA-256 of the password and call that a password-hashing system. A fast, unsalted, unkeyed digest is the wrong primitive for password storage. This article will not turn the Hash Generator into a substitute for that system. Do not treat the hex as encryption. Do not publish a SHA-1 digest as proof that a file is safe from collision. Do not compare two files by eyeballing hex if you needed a structured JSON comparison; that is a different tool.
Hashing vs encryption is a claim about reversal. A digest is meant to be compared. Ciphertext is meant to be opened with a key. On YallaSolve you can hash text to SHA-256, SHA-384, SHA-512, or legacy SHA-1 in the browser. Write the algorithm next to the hex. A bare “encrypted string” that is 64 hex characters is usually a hash that was named wrong.
No. These digests are one-way. Hash the same input again and compare the hex.
No. Web Crypto does not provide MD5, and the Hash Generator will not invent it.
SHA-1 is broken for collision resistance. Use it only to match an old checksum.
No. A browser SHA-256 of a password is not a password-hashing scheme. Do not use this page that way.