Protocol: Hash Lookup

SHA-256 hash
reverse lookup.

Paste a SHA-256 hex digest (64 characters). We compare against rockyou and return the matching plaintext when found.

check_circle Example: SHA-256 of password is 5e884898da28047151d0e56f8dc6292773603d0d6aabbdd62a11ef721d1542d8

SHA-256 Password Hash Search

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About SHA-256

SHA-256 is part of the SHA-2 family, published by NIST in 2001. It produces a 256-bit digest (64 hex characters) and remains a cryptographic workhorse — used inside TLS certificates, Bitcoin, file-integrity checks, and many modern password-hashing schemes.

As a plain hash, SHA-256 is not a password storage function: it is too fast. For passwords, always layer a slow KDF (bcrypt, scrypt, Argon2, or PBKDF2-SHA-256) on top.

Generating SHA-256 hashes 

echo -n password | sha256sum -
5e884898da28047151d0e56f8dc6292773603d0d6aabbdd62a11ef721d1542d8  -
>>> import hashlib
>>> hashlib.sha256(b'password').hexdigest()