Authentication & Security Tools

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Create an HMAC (Hash‑based Message Authentication Code) using SHA‑256 or SHA‑512 with a secret key. Verify data integrity. Local.

Generator authentication generator HMAC SHA‑256

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Paste raw email headers and see authentication results (SPF, DKIM, DMARC) in a readable table. Find spoofing attempts.

Network authentication email headers SPF

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Generate a DKIM DNS record from a public key and selector. Check syntax. Improve your domain’s email deliverability.

Network authentication DKIM DNS email

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Build a valid SPF TXT record by selecting mail servers, IPv4/IPv6 ranges, and includes. Validate syntax and get ready‑to‑publish output.

Network authentication DNS email SPF

Tag: Authentication & Security Tools