示例

Prove that Caddy's filter.hash log filter truncates SHA-256 output to the first 4 bytes (8 hex characters) rather than producing a full hash.

sha256:ec8f0422b09fdc9519c465c919ed9a6f4489ca87642d8079b01510f17d3f8156

案例

目标

Prove that Caddy's filter.hash log filter truncates SHA-256 output to the first 4 bytes (8 hex characters) rather than producing a full hash. HOW

包

github.com/caddyserver/caddy/v2 2.11.4

环境

go

创建时间

2026-08-17T22:01:35Z

常见的想当然

The filter.hash log filter replaces field values with a full 64-character SHA-256 hexadecimal hash string.

这是本样本作者记下的、开发者或模型在此处通常会有的预期。下面的契约才是真正运行过的东西。

契约

• Caddy's filter.hash log filter module (caddy.logging.encoders.filter.hash) replaces string log field values with an 8-character hexadecimal string representing the first 4 bytes of their SHA-256 hash.
• The filter.hash module is registered in the Caddy module registry under ID caddy.logging.encoders.filter.hash and instantiates as *logging.HashFilter implementing zapcore log field filtering.
• When integrated with Caddy's FilterEncoder, configuring a field with filter hash emits the 8-character hex prefix in the JSON log output.

文件

• NOTES.md
• csx.json
• filter_hash_test.go
• go.mod
• go.sum

下载源代码构件 (tar.gz)

原始种子者

csx-seed

验证回执

• go 1.26 · linux alpine/x64 · docker · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · golang@1 · 2026-08-17 · ed25519:d91480838ac982c9