SAML Response XML Decoder
Decodes a Base64 or deflated SAML XML string and reports an issuer, character count, and short text preview. It does not extract Subject, Assertion, or Signature blocks.
About this saml response xml decoder
Decodes a Base64 or deflated SAML XML string and reports an issuer, character count, and short text preview. It does not extract Subject, Assertion, or Signature blocks Runs entirely in-memory using Web Crypto primitives to keep sensitive tokens, certificates, and cryptographic keys secure from third-party interception.
Encoding & cryptographic principles
Decodes, inspects, and validates authentication tokens and cryptographic credentials conforming to RFC 7519 (JSON Web Token - JWT), RFC 7515 (JSON Web Signature - JWS), and RFC 6238 (TOTP: Time-Based One-Time Password Algorithm). Decodes Base64URL-encoded JWT headers and claims payloads into syntax-highlighted JSON, parsing UNIX timestamps (iat, exp, nbf) into human-readable UTC dates and evaluating token expiration status without exposing private signing keys.
Worked verification example
Scenario: Inspect the issuer and text preview of an unencrypted SAML response XML.
Sample input:
Processing: Parses the XML, extracts the first Issuer element and a short normalized text preview; it does not decrypt or validate signatures or assertions.
Illustrative output:
Security parameters & input constraints
This parser does not verify SAML signatures, issuer trust, audience, recipient, expiry or replay protection. Malformed Base64, compressed content or XML can fail; the preview strips tags and is not a safe basis for login decisions.
Cryptographic digests, encoded strings, and signatures generated by SAML Response XML Decoder should be verified against target authentication systems before production use.
Client-side Web Crypto boundary
Key derivation, hashing, and encoding in SAML Response XML Decoder execute in local memory using Web Crypto APIs without remote socket transmission.
Cryptographic specifications & RFC standards
Technical specifications and cryptographic RFC standards governing algorithms and key representations:
SAML Response XML Decoder verification · Audit standards
How to use it
- Paste SAML XML, or Base64-encoded XML/DEFLATE content.
- Decode locally, parse XML and extract the first Issuer plus a text preview.
- Read encoding label, issuer, character count and first 200 preview characters in JSON.
Frequently asked questions
Which SAML representations can the decoder read?+
It accepts XML directly or base64 input; for base64 it first attempts DEFLATE decompression and otherwise interprets decoded bytes as text.
What output does this XML example produce?+
Enter `<Response><Issuer>https://idp.example.test</Issuer>ada</Response>`; it returns encoding `xml`, issuer `https://idp.example.test`, `characters` 28, and preview `https://idp.example.test ada`.
Does it validate a SAML signature or assertion trust?+
No. It extracts displayable fields only. Signature, certificate, audience, recipient, time, and trust validation require a dedicated SAML verifier.
What fields are returned after decoding?+
The JSON result records decoded status, source encoding, an optional Issuer value, normalized text character count, and a preview limited to 200 characters.