Security & Crypto API

Compute SHA-256 and HMAC-SHA256 hashes, and generate SSH key fingerprints for provisioning, auditing, and secure workflows.

Included endpoints

• POST /api/v1/hash/sha256 – SHA-256 hash of text
• POST /api/v1/hash/hmac-sha256 – HMAC-SHA256 with a secret
• POST /api/v1/ssh/key/fingerprint – SSH key MD5 & SHA-256 fingerprints

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Example: HMAC-SHA256

curl --request POST \
  --url https://hefftools.dev/api/v1/hash/hmac-sha256 \
  --header 'Content-Type: application/json' \
  --header 'X-RapidAPI-Key: <your-rapidapi-key>' \
  --data '{
    "message": "data to sign",
    "secret": "mysecret"
  }'

Response (example):

{
  "algorithm": "hmac-sha256",
  "hex_digest": "ae1b3c..."
}

Use cases

• Signing payloads for webhooks or internal APIs
• Verifying SSH keys before adding them to authorized_keys
• Generating fingerprints for inventory and auditing systems