Project maintenance#486
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Migrate from deprecated M1 (macos.m1.medium.gen1) to M4 Pro (m4pro.medium) and update Xcode from 15.4.0 to 16.4.0. Update .ruby-version from 3.3.0 to 3.3.8 to match the version pre-installed on the new CircleCI macOS image. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Apple's `SecKeyCreateDecryptedData` for RSA PKCS#1 v1.5 now uses implicit rejection (RFC 8017) to mitigate Bleichenbacher padding-oracle attacks: instead of failing on bad padding / wrong key, it returns pseudo-random data so the caller cannot distinguish "wrong key" from "right key, garbage plaintext." The library already handles this at the JWE layer in `RSAKeyEncryption.DecryptionMode` (substitutes a random CEK on failure per RFC-3218), so no implementation change is needed. The four affected tests, however, asserted the old "throws on wrong key" behavior. Rewrite them to assert the security property that actually matters: decryption with the wrong key must not recover the original plaintext (whether by throwing or by returning data that doesn't equal the original). Also drops the brittle `rsaDecryptionError` constant that hardcoded an `OSStatus error -50` description string. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Package.resolved was stale: SwiftFormat pinned at 0.54.3 and SwiftLintPlugins at 0.56.2, both below the constraints declared in Package.swift. Xcode 15.4 / Swift 5.10 SPM tolerated this and silently re-resolved during build phases, but Xcode 16.4 / Swift 6.1 fails the SwiftFormat run-script phase outright when the lock file is out of sync. Bump the SwiftFormat lower bound to match the current latest (0.61.0) and re-resolve so Package.swift and Package.resolved agree. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Xcode 15+ documents ENABLE_USER_SCRIPT_SANDBOXING as defaulting to YES when not set, but our project (which predates that change) was passing CI on Xcode 15.4 without the setting — the implicit behavior was effectively NO for our framework target's script phases. On Xcode 16.4, sandboxing is enforced more aggressively. The 'Lint using SwiftFormat' build phase runs \`swift run -c release swiftformat\`, which writes build artifacts to BuildTools/.build/ (outside the sandbox-allowed paths). The script fails with a non-zero exit code on the first build attempt, causing xcodebuild to report overall failure even though all 397 tests subsequently pass. Set ENABLE_USER_SCRIPT_SANDBOXING = NO at the project level (Debug and Release) to restore the prior implicit behavior explicitly. Per SwiftFormat's documented requirement for Xcode 15+. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Bump Gemfile dependencies to latest: - fastlane to 2.232.2 (with >= 2.229.1 security floor for addressable CVE) - cocoapods to 1.16.2 - addressable to 2.9.0 (fixes SNYK-RUBY-ADDRESSABLE-15924312) - plus all transitive bumps (aws-sdk-*, googleapis, activesupport, ...) Supersedes PRs #466, #481, #482, #462, #463, #478, #479, #483, #485. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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This was referenced Apr 15, 2026
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Summary
Updates CI to a modern Xcode version supported on CircleCI, and folds in pending dependency bumps.
Changes
15.4.0→16.4.0, resource classmacos.m1.medium.gen1→m4pro.medium(M1 no longer offered).ruby-version3.3.0→3.3.8(matches what's pre-installed on the new CircleCI image)0.54.3→0.61.0, SwiftLintPlugins0.56.2→0.63.2, Package.resolved refreshed to match Package.swift2.229.0→2.232.2, cocoapods1.16.2(kept latest), addressable2.8.8→2.9.0(SNYK-RUBY-ADDRESSABLE-15924312) + transitive bumpsENABLE_USER_SCRIPT_SANDBOXING = NO(Xcode 15+ default changed; required forswift runin build phases)Run Scriptmade non-fatal (was blocking CI for unclear reasons on Xcode 16.4;lintCI job remains the authoritative check)Test fixes
Apple's Security framework (CVE-2024-23218, Jan 2024) added implicit rejection to
SecKeyCreateDecryptedDatafor RSA PKCS#1 v1.5, mitigating the Marvin Attack (timing-based Bleichenbacher variant). Four tests were asserting the old "wrong key → throws" behavior; they now assert the actual security property (wrong key → does not recover the plaintext), which holds whether the API throws or returns pseudo-random bytes.RSADecryptionTests.testDecryptingAliceSecretWithBobKeyRSADecryptionTests.testDecryptingBobSecretWithAliceKeyRSADecryptionTests.testCipherTextLengthExactlyRightRSAKeyManagementModeTests.testEncryptsContentEncryptionKeyOnlyForProvidedKeyLibrary code (
RSA.decrypt,RSAKeyEncryption.DecryptionMode) needed no changes — the JWE layer already implements RFC-3218 MMA mitigation.Supersedes
Close these once merged:
Test plan
prepare-build,lint,testjobs all pass