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grelmicro-core

The compiled hot paths behind grelmicro.

Only work that earns the crossing lives here. A call into Rust costs 55 nanoseconds measured, so anything doing less than about a microsecond of real work belongs in Python. The token cache and the ban table were measured both ways and stayed there.

What is here today is JWT verification, where a signature check is some twelve microseconds: selecting the key the token's kid names, verifying the signature, checking the registered claims, and decoding the claim set, all in one call. Configuration, the claim wrapper, the cache and the error taxonomy stay in Python.

Install it through grelmicro rather than on its own:

pip install "grelmicro[jwt]"

Design notes

  • aws-lc-rs is the only crypto provider enabled, so the slower pure-Rust backend cannot be selected by accident. AWS-LC is a fork of BoringSSL. Its fips feature is not enabled, so this build claims no FIPS validation.
  • Verification releases the GIL, so a thread pool verifies in parallel.
  • The module declares gil_used = false, so importing it does not turn the GIL back on under a free-threaded interpreter.
  • Verifier is a frozen class holding only what construction put in it, which is what makes it safe to share across threads without a lock.

The measurements behind each of these choices are written up in docs/architecture/jwt.md in the grelmicro repository.

Metadata

Release files for grelmicro-core 0.1.3

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Source distribution (sdist)

Source distribution for grelmicro-core 0.1.3
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Built distributions (wheels)

Table of built distributions (wheels) for grelmicro-core 0.1.3
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grelmicro_core-0.1.3-cp314-cp314t-win_amd64.whl CPython 3.14 CPython 3.14 free-threading Windows x86-64 Details
grelmicro_core-0.1.3-cp314-cp314t-win32.whl CPython 3.14 CPython 3.14 free-threading Windows x86-32 Details
grelmicro_core-0.1.3-cp314-cp314t-musllinux_1_2_x86_64.whl CPython 3.14 CPython 3.14 free-threading Linux musl 1.2+ x86-64 Details
grelmicro_core-0.1.3-cp314-cp314t-musllinux_1_2_armv7l.whl CPython 3.14 CPython 3.14 free-threading Linux musl 1.2+ ARMv7l Details
grelmicro_core-0.1.3-cp314-cp314t-musllinux_1_2_aarch64.whl CPython 3.14 CPython 3.14 free-threading Linux musl 1.2+ ARM64 Details
grelmicro_core-0.1.3-cp314-cp314t-manylinux_2_17_x86_64.manylinux2014_x86_64.whl CPython 3.14 CPython 3.14 free-threading Linux glibc 2.17+ x86-64 Details
grelmicro_core-0.1.3-cp314-cp314t-manylinux_2_17_s390x.manylinux2014_s390x.whl CPython 3.14 CPython 3.14 free-threading Linux glibc 2.17+ IBM System/390x Details
grelmicro_core-0.1.3-cp314-cp314t-manylinux_2_17_ppc64le.manylinux2014_ppc64le.whl CPython 3.14 CPython 3.14 free-threading Linux glibc 2.17+ PowerPC 64-le Details
grelmicro_core-0.1.3-cp314-cp314t-manylinux_2_17_i686.manylinux2014_i686.whl CPython 3.14 CPython 3.14 free-threading Linux glibc 2.17+ x86-32 Details
grelmicro_core-0.1.3-cp314-cp314t-manylinux_2_17_armv7l.manylinux2014_armv7l.whl CPython 3.14 CPython 3.14 free-threading Linux glibc 2.17+ ARMv7l Details
grelmicro_core-0.1.3-cp314-cp314t-manylinux_2_17_aarch64.manylinux2014_aarch64.whl CPython 3.14 CPython 3.14 free-threading Linux glibc 2.17+ ARM64 Details
grelmicro_core-0.1.3-cp314-cp314t-macosx_11_0_arm64.whl CPython 3.14 CPython 3.14 free-threading macOS 11.0+ ARM64 Details
grelmicro_core-0.1.3-cp314-cp314t-macosx_10_12_x86_64.whl CPython 3.14 CPython 3.14 free-threading macOS 10.12+ x86-64 Details
grelmicro_core-0.1.3-cp314-cp314-win_amd64.whl CPython 3.14 CPython 3.14 Windows x86-64 Details
grelmicro_core-0.1.3-cp314-cp314-win32.whl CPython 3.14 CPython 3.14 Windows x86-32 Details
grelmicro_core-0.1.3-cp314-cp314-musllinux_1_2_x86_64.whl CPython 3.14 CPython 3.14 Linux musl 1.2+ x86-64 Details
grelmicro_core-0.1.3-cp314-cp314-musllinux_1_2_armv7l.whl CPython 3.14 CPython 3.14 Linux musl 1.2+ ARMv7l Details
grelmicro_core-0.1.3-cp314-cp314-musllinux_1_2_aarch64.whl CPython 3.14 CPython 3.14 Linux musl 1.2+ ARM64 Details
grelmicro_core-0.1.3-cp314-cp314-manylinux_2_17_x86_64.manylinux2014_x86_64.whl CPython 3.14 CPython 3.14 Linux glibc 2.17+ x86-64 Details
grelmicro_core-0.1.3-cp314-cp314-manylinux_2_17_s390x.manylinux2014_s390x.whl CPython 3.14 CPython 3.14 Linux glibc 2.17+ IBM System/390x Details
grelmicro_core-0.1.3-cp314-cp314-manylinux_2_17_ppc64le.manylinux2014_ppc64le.whl CPython 3.14 CPython 3.14 Linux glibc 2.17+ PowerPC 64-le Details
grelmicro_core-0.1.3-cp314-cp314-manylinux_2_17_i686.manylinux2014_i686.whl CPython 3.14 CPython 3.14 Linux glibc 2.17+ x86-32 Details
grelmicro_core-0.1.3-cp314-cp314-manylinux_2_17_armv7l.manylinux2014_armv7l.whl CPython 3.14 CPython 3.14 Linux glibc 2.17+ ARMv7l Details
grelmicro_core-0.1.3-cp314-cp314-manylinux_2_17_aarch64.manylinux2014_aarch64.whl CPython 3.14 CPython 3.14 Linux glibc 2.17+ ARM64 Details
grelmicro_core-0.1.3-cp314-cp314-macosx_11_0_arm64.whl CPython 3.14 CPython 3.14 macOS 11.0+ ARM64 Details
grelmicro_core-0.1.3-cp314-cp314-macosx_10_12_x86_64.whl CPython 3.14 CPython 3.14 macOS 10.12+ x86-64 Details

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