Hlomo Logo hlomo
Cryptographic Verification

Certificate Verifier

Independently verify the authenticity of Hlomo Erasure Certificates using SHA-256 cryptographic hashing.

Upload Certificate

Drop your certificate here

or click to browse

How Hash Verification Works

  1. 1

    Extract Hash Components

    The certificate contains four pieces of data: timestamp, communityId, adminId, and communityName.

  2. 2

    Reconstruct Canonical String

    Concatenate the components with pipe separators: timestamp|communityId|adminId|communityName

  3. 3

    Compute SHA-256 Hash

    Apply the SHA-256 algorithm to the canonical string. This tool does it in-browser using the Web Crypto API.

  4. 4

    Compare with Certificate Hash

    If the computed hash matches the verificationHash in the certificate, it's authentic. Any tampering would change the hash.

Command-Line Verification

For maximum security, verify using OpenSSL:

echo -n "timestamp|communityId|adminId|communityName" | openssl dgst -sha256 -hex