diff --git a/dev-libs/aws-c-auth/Manifest b/dev-libs/aws-c-auth/Manifest
index d54b15b17cef8..4452b11b21b69 100644
--- a/dev-libs/aws-c-auth/Manifest
+++ b/dev-libs/aws-c-auth/Manifest
@@ -1,2 +1,3 @@
 DIST aws-c-auth-0.10.4.tar.gz 288986 BLAKE2B b69da30caf68ba9e2cdb32c4ae9f12c9dcfc18d707d9ddf357d5fa395bc78164e719ccf5fccee0bc2bfde0baab4d04fbac956c0a36eacdfa54f9a222687bbc91 SHA512 f10209473bc417388a1f6804a10f93fb549f5b960ed4f1522c1080c4d073037f86fd3ab8c6faf8ab0f9d9603602a968f5d1000041299be6690b40cf0e1252357
 DIST aws-c-auth-0.9.3.tar.gz 280180 BLAKE2B 68b9750899aea8f4baffaa42afbeaa1b6eb60344d4df386fb328ad01ac16cff4589ef2de7b912ece001f715ed3ecbb8f731d4495f74453a07b74d4d0d23645a5 SHA512 f4573b644717e7882220a97e0795a4a6befba86371a24cb9df2d886dd832f40b478b698e878cb901f23ffde2f97737e27e4d9e5cd1d3af08645f6f1e33f11eee
+DIST aws-c-auth-1.0.0.tar.gz 291120 BLAKE2B d57ae0d87a4c80f33d27320b750e9f9cf9e4ab483f346f658ec451b4af686ae82a0627412bd33ecd4854f8ec7bdda760fbbcd7cc49769be574927d74151f6699 SHA512 6ff5e408a3c9d88eb4f0b6b711eb98acdba94f8677f15297e44636de1a2a3d352aaa8cd264693cf1d757a3b58d6bf05e5182cb7b80956c8531c53be34d9f8f73
diff --git a/dev-libs/aws-c-auth/aws-c-auth-1.0.0.ebuild b/dev-libs/aws-c-auth/aws-c-auth-1.0.0.ebuild
new file mode 100644
index 0000000000000..959a67838a636
--- /dev/null
+++ b/dev-libs/aws-c-auth/aws-c-auth-1.0.0.ebuild
@@ -0,0 +1,36 @@
+# Copyright 2025-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit cmake
+
+DESCRIPTION="AWS C Auth: C99 library implementation of AWS client-side authentication"
+HOMEPAGE="https://github.com/awslabs/aws-c-auth"
+SRC_URI="https://github.com/awslabs/aws-c-auth/archive/refs/tags/v${PV}.tar.gz -> ${P}.tar.gz"
+
+LICENSE="Apache-2.0"
+SLOT="0/$(ver_cut 1-2)"
+KEYWORDS="~amd64 ~arm64 ~riscv"
+IUSE="test"
+RESTRICT="!test? ( test )"
+
+DEPEND="
+	>=dev-libs/aws-c-cal-1.0.0:=
+	>=dev-libs/aws-c-common-1.0.0:=
+	>=dev-libs/aws-c-http-1.0.0:=
+	>=dev-libs/aws-c-sdkutils-1.0.0:=
+"
+RDEPEND="${DEPEND}"
+BDEPEND="dev-libs/aws-c-common"
+
+src_configure() {
+	local mycmakeargs=(
+		-DAWS_GET_VERSION_MODULE="${ESYSROOT}/usr/$(get_libdir)/cmake/aws-c-common/modules/AwsGetVersion.cmake"
+		-DBUILD_TESTING=$(usex test)
+	)
+	use test && mycmakeargs+=(
+		-DENABLE_NET_TESTS=OFF # Network Sandbox cause these to fail.
+	)
+	cmake_src_configure
+}