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WalkthroughDigest authentication support expanded from MD5-only to multi-algorithm approach supporting SHA-512-256, SHA-256, and MD5. Password configuration changed from precomputed byte arrays to plaintext passwords with dynamic hashing. Documentation updated to reflect RFC 7616 compliance with QoP support and advanced configuration options. Changes
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Actionable comments posted: 3
🤖 Fix all issues with AI agents
In `@topics/server-digest-auth.md`:
- Around line 241-243: Update the "Strict mode" description to explicitly state
whether the session variants are permitted: change the sentence that reads
"Removes MD5 algorithms (only allows SHA-256 and SHA-512-256)" to specify
inclusion/exclusion of the "-sess" variants (e.g., "allows SHA-256 and
SHA-512-256 and their -sess variants" or "allows only the non-session variants
SHA-256 and SHA-512-256, excluding -sess variants"), and add a short clarifying
note in the algorithm table explaining the policy for -sess variants to keep
both places consistent (refer to the "Strict mode" heading and the algorithm
table entries for SHA-256/SHA-512-256).
- Around line 152-154: The snippet include range is invalid (references lines
50-52 that don't exist); update the include-lines for the Application.kt snippet
to cover the actual main() function and CustomPrincipal declaration—e.g., change
the include-lines to encompass lines that contain the install {
realm/algorithms/digestProvider/validate } block and the CustomPrincipal data
class (adjust to the file's real line numbers so the main() body and line with
CustomPrincipal are included); ensure the include-lines end at the actual last
line of the file (not beyond 49) so rendering succeeds.
- Around line 284-316: The migration example incorrectly claims RFC 7616 support
and shows non-existent symbols (DigestAlgorithm.SHA_512_256 and a three-arg
digestProvider with an algorithm parameter); remove or rewrite that "After (RFC
7616)" block so it only documents the real, current RFC 2069-style API: keep the
legacy -> current example using install(Authentication) { digest("auth") { realm
= ... digestProvider { userName, realm -> ... } } }, delete references to
DigestAlgorithm and the algorithm parameter, and add a short note stating RFC
7616 is not implemented in released Ktor versions.
🧹 Nitpick comments (2)
codeSnippets/snippets/auth-digest/src/main/kotlin/authdigest/Application.kt (1)
11-17: Plaintext password storage is acceptable for a documentation snippet, but consider adding a cautionary comment.This is a code sample that will be included in the documentation. While storing plaintext passwords in a map is fine for a demo, users may copy-paste this pattern. A brief comment noting that passwords should not be stored in plaintext in production could help prevent misuse.
💡 Suggested comment
+// In production, store pre-computed HA1 hashes or use a secure credential store val userPasswords: Map<String, String> = mapOf( "jetbrains" to "foobar", "admin" to "password" )topics/server-digest-auth.md (1)
196-223: Userhash example iterates all users for each request — note the scalability caveat.The
userHashResolverexample linearly scans all users withusers.find { ... }to match the hash. For documentation purposes this is fine, but consider adding a brief note that production implementations should use a pre-computed lookup table for efficiency.
topics/server-digest-auth.md
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| 6. **Always use HTTPS** – Digest authentication alone doesn't encrypt traffic; always use TLS in production. | ||
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| ## Migration from legacy digest auth {id="migration"} |
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We don't include migration or deprecation sections in our general topics. If required, we need to add a separate migration guide (when there are breaking changes) or document this in a "What's new" document. Otherwise, we can add a short note somewhere above about the deprecation if no separate topic is required.
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Yeah, it makes sense not to include it in general topics
I think mentioning it in the "What's new" document should be enough
2 participants
The implementation issue: KTOR-7578 Update Digest authentication implementation according to RFC 7616