commit:     6e7adae4b235c386c14e4aa63cf0699e8540c9ce
Author:     Sam James <sam <AT> gentoo <DOT> org>
AuthorDate: Fri Feb 13 23:28:45 2026 +0000
Commit:     Sam James <sam <AT> gentoo <DOT> org>
CommitDate: Fri Feb 13 23:28:45 2026 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=6e7adae4

app-crypt/gnupg: fix TPM decryption regression in 2.5.17

Closes: https://bugs.gentoo.org/970038
Signed-off-by: Sam James <sam <AT> gentoo.org>

 ...-the-regression-in-pkdecrypt-with-TPM-RSA.patch |  40 ++++
 app-crypt/gnupg/gnupg-2.5.17-r2.ebuild             | 221 +++++++++++++++++++++
 2 files changed, 261 insertions(+)

diff --git 
a/app-crypt/gnupg/files/0003-agent-Fix-the-regression-in-pkdecrypt-with-TPM-RSA.patch
 
b/app-crypt/gnupg/files/0003-agent-Fix-the-regression-in-pkdecrypt-with-TPM-RSA.patch
new file mode 100644
index 000000000000..1a2965106d39
--- /dev/null
+++ 
b/app-crypt/gnupg/files/0003-agent-Fix-the-regression-in-pkdecrypt-with-TPM-RSA.patch
@@ -0,0 +1,40 @@
+From 6eed3959303c81c9699fe9273030e480732f72be Mon Sep 17 00:00:00 2001
+Message-ID: 
<6eed3959303c81c9699fe9273030e480732f72be.1771025112.git....@gentoo.org>
+From: NIIBE Yutaka <[email protected]>
+Date: Thu, 12 Feb 2026 11:51:17 +0900
+Subject: [PATCH GnuPG] agent: Fix the regression in pkdecrypt with TPM RSA.
+
+* agent/divert-tpm2.c (divert_tpm2_pkdecrypt): Care about additional
+0x00.
+
+--
+
+GnuPG-bug-id: 8045
+Signed-off-by: NIIBE Yutaka <[email protected]>
+---
+ agent/divert-tpm2.c | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+diff --git a/agent/divert-tpm2.c b/agent/divert-tpm2.c
+index 5500c07f1..839a039bc 100644
+--- a/agent/divert-tpm2.c
++++ b/agent/divert-tpm2.c
+@@ -138,6 +138,15 @@ divert_tpm2_pkdecrypt (ctrl_t ctrl,
+       if (!smatch (&s, n, "a"))
+         return gpg_error (GPG_ERR_UNKNOWN_SEXP);
+       n = snext (&s);
++      /* NOTE: gpg-agent protocol uses signed integer for RSA (%m in
++       * MPI), where 0x00 is added when the MSB is 1.  TPM2 uses
++       * unsigned integer.  We need to remove this 0x00, or else
++       * it may result GPG_ERR_TOO_LARGE in tpm2daemon.  */
++      if (!*s && (n&1))
++        {
++          s++;
++          n--;
++        }
+     }
+   else if (smatch (&s, n, "ecdh"))
+     {
+-- 
+2.53.0
+

diff --git a/app-crypt/gnupg/gnupg-2.5.17-r2.ebuild 
b/app-crypt/gnupg/gnupg-2.5.17-r2.ebuild
new file mode 100644
index 000000000000..c0cde013de39
--- /dev/null
+++ b/app-crypt/gnupg/gnupg-2.5.17-r2.ebuild
@@ -0,0 +1,221 @@
+# Copyright 1999-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+# Maintainers should:
+# 1. Join the "Gentoo" project at https://dev.gnupg.org/project/view/27/
+# 2. Subscribe to release tasks like https://dev.gnupg.org/T6159
+# (find the one for the current release then subscribe to it +
+# any subsequent ones linked within so you're covered for a while.)
+
+VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/gnupg.asc
+# in-source builds are not supported: https://dev.gnupg.org/T6313#166339
+inherit flag-o-matic out-of-source multiprocessing systemd toolchain-funcs 
verify-sig
+
+MY_P="${P/_/-}"
+
+DESCRIPTION="The GNU Privacy Guard, a GPL OpenPGP implementation"
+HOMEPAGE="https://gnupg.org/";
+SRC_URI="mirror://gnupg/gnupg/${MY_P}.tar.bz2"
+SRC_URI+=" verify-sig? ( mirror://gnupg/gnupg/${P}.tar.bz2.sig )"
+S="${WORKDIR}/${MY_P}"
+
+LICENSE="GPL-3+"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~m68k ~mips ~ppc ~ppc64 
~riscv ~s390 ~sparc ~x86 ~arm64-macos ~x64-macos ~x64-solaris"
+IUSE="+alternatives bzip2 doc ldap nls readline selinux +smartcard ssl test 
+tofu tpm tools usb user-socket wks-server"
+RESTRICT="!test? ( test )"
+REQUIRED_USE="test? ( tofu )"
+
+# Existence of executables is checked during configuration.
+# Note: On each bump, update dep bounds on each version from configure.ac!
+DEPEND="
+       >=dev-libs/libassuan-3.0.0-r1:=
+       >=dev-libs/libgcrypt-1.11.0:=
+       >=dev-libs/libgpg-error-1.56
+       >=dev-libs/libksba-1.6.3
+       >=dev-libs/npth-1.2
+       virtual/zlib:=
+       bzip2? ( app-arch/bzip2 )
+       ldap? ( net-nds/openldap:= )
+       readline? ( sys-libs/readline:0= )
+       smartcard? ( usb? ( virtual/libusb:1 ) )
+       tofu? ( >=dev-db/sqlite-3.27 )
+       tpm? ( >=app-crypt/tpm2-tss-2.4.0:= )
+       ssl? ( >=net-libs/gnutls-3.2:0= )
+"
+RDEPEND="
+       ${DEPEND}
+       nls? ( virtual/libintl )
+       selinux? ( sec-policy/selinux-gpg )
+       wks-server? ( virtual/mta )
+"
+PDEPEND="
+       app-crypt/pinentry
+       alternatives? (
+               app-alternatives/gpg[-freepg(-)]
+       )
+"
+BDEPEND="
+       virtual/pkgconfig
+       doc? ( sys-apps/texinfo )
+       nls? ( sys-devel/gettext )
+       verify-sig? ( sec-keys/openpgp-keys-gnupg )
+"
+
+DOCS=(
+       ChangeLog NEWS README THANKS TODO VERSION
+       doc/FAQ doc/DETAILS doc/HACKING doc/TRANSLATE doc/OpenPGP doc/KEYSERVER
+)
+
+PATCHES=(
+       
"${FILESDIR}"/${PN}-2.1.20-gpgscm-Use-shorter-socket-path-lengts-to-improve-tes.patch
+       "${FILESDIR}"/0001-Fix-stub-functions-to-avoid-LTO-linking-bugs.patch
+       
"${FILESDIR}"/0002-Fix-stub-functions-to-avoid-LTO-linking-bugs-followup.patch
+       
"${FILESDIR}"/0003-agent-Fix-the-regression-in-pkdecrypt-with-TPM-RSA.patch
+)
+
+src_prepare() {
+       default
+
+       GNUPG_SYSTEMD_UNITS=(
+               dirmngr.service
+               dirmngr.socket
+               gpg-agent-browser.socket
+               gpg-agent-extra.socket
+               gpg-agent.service
+               gpg-agent.socket
+               gpg-agent-ssh.socket
+       )
+
+       cp "${GNUPG_SYSTEMD_UNITS[@]/#/${FILESDIR}/}" "${T}" || die
+
+       # Inject SSH_AUTH_SOCK into user's sessions after enabling 
gpg-agent-ssh.socket in systemctl --user mode,
+       # idea borrowed from libdbus, see
+       #   
https://gitlab.freedesktop.org/dbus/dbus/-/blob/master/bus/systemd-user/dbus.socket.in#L6
+       #
+       # This cannot be upstreamed, as it requires determining the exact 
prefix of 'systemctl',
+       # which in turn requires discovery in Autoconf, something that upstream 
deeply resents.
+       sed -e "/DirectoryMode=/a ExecStartPost=-${EPREFIX}/bin/systemctl 
--user set-environment SSH_AUTH_SOCK=%t/gnupg/S.gpg-agent.ssh" \
+               -i "${T}"/gpg-agent-ssh.socket || die
+
+       # Since 2.5.3, --supervised is called --deprecated-supervised.  See
+       # https://dev.gnupg.org/rGa019a0fcd8dfb9d1eae5bc991fdd54b7cf55641e
+       sed -i "s/--supervised/--deprecated-supervised/g" "${T}"/*.service || 
die
+}
+
+my_src_configure() {
+       local myconf=(
+               $(use_enable bzip2)
+               $(use_enable nls)
+               $(use_enable smartcard scdaemon)
+               $(use_enable ssl gnutls)
+               $(use_enable test all-tests)
+               $(use_enable test tests)
+               $(use_enable tofu)
+               $(use_enable tofu keyboxd)
+               $(use_enable tofu sqlite)
+               $(usex tpm '--with-tss=intel' '--disable-tpm2d')
+               $(use smartcard && use_enable usb ccid-driver || echo 
'--disable-ccid-driver')
+               $(use_enable wks-server wks-tools)
+               $(use_with ldap)
+               $(use_with readline)
+
+               # Hardcode mailprog to /usr/libexec/sendmail even if it does 
not exist.
+               # As of GnuPG 2.3, the mailprog substitution is used for the 
binary called
+               # by wks-client & wks-server; and if it's autodetected but not 
not exist at
+               # build time, then then 'gpg-wks-client --send' functionality 
will not
+               # work. This has an unwanted side-effect in stage3 builds: 
there was a
+               # [R]DEPEND on virtual/mta, which also brought in 
virtual/logger, bloating
+               # the build where the install guide previously make the user 
chose the
+               # logger & mta early in the install.
+               --with-mailprog=/usr/libexec/sendmail
+
+               --disable-ntbtls
+               --enable-gpgsm
+               --enable-large-secmem
+
+               CC_FOR_BUILD="$(tc-getBUILD_CC)"
+               GPGRT_CONFIG="${ESYSROOT}/usr/bin/${CHOST}-gpgrt-config"
+
+               $("${S}/configure" --help | grep -o -- '--without-.*-prefix')
+       )
+
+       if use prefix && use usb; then
+               # bug #649598
+               append-cppflags -I"${ESYSROOT}/usr/include/libusb-1.0"
+       fi
+
+       if [[ ${CHOST} == *-solaris* ]] ; then
+               # these somehow are treated as fatal, but Solaris has different
+               # types for getpeername with socket_t
+               append-flags -Wno-incompatible-pointer-types
+               append-flags -Wno-unused-label
+       fi
+
+       # bug #663142
+       if use user-socket; then
+               myconf+=( --enable-run-gnupg-user-socket )
+       fi
+
+       # glib fails and picks up clang's internal stdint.h causing weird errors
+       tc-is-clang && export 
gl_cv_absolute_stdint_h="${ESYSROOT}"/usr/include/stdint.h
+
+       econf "${myconf[@]}"
+}
+
+my_src_compile() {
+       default
+
+       use doc && emake -C doc html
+}
+
+my_src_test() {
+       export TESTFLAGS="--parallel=$(makeopts_jobs)"
+
+       default
+}
+
+my_src_install() {
+       emake DESTDIR="${D}" install
+
+       use tools && dobin tools/{gpgconf,gpgsplit,gpg-check-pattern} 
tools/make-dns-cert
+
+       if use alternatives; then
+               # rename for app-alternatives/gpg
+               mv "${ED}"/usr/bin/gpg{,-reference} || die
+               mv "${ED}"/usr/bin/gpgv{,-reference} || die
+               mv "${ED}"/usr/share/man/man1/gpg{,-reference}.1 || die
+               mv "${ED}"/usr/share/man/man1/gpgv{,-reference}.1 || die
+       else
+               dosym gpg /usr/bin/gpg2
+               dosym gpgv /usr/bin/gpgv2
+               echo ".so man1/gpg.1" > "${ED}"/usr/share/man/man1/gpg2.1 || die
+               echo ".so man1/gpgv.1" > "${ED}"/usr/share/man/man1/gpgv2.1 || 
die
+       fi
+
+       use doc && dodoc doc/gnupg.html/*
+}
+
+my_src_install_all() {
+       einstalldocs
+
+       use tools && dobin tools/{convert-from-106,mail-signed-keys,lspgpot}
+       use doc && dodoc doc/*.png
+
+       # Dropped upstream in 
https://git.gnupg.org/cgi-bin/gitweb.cgi?p=gnupg.git;a=commitdiff;h=eae28f1bd4a5632e8f8e85b7248d1c4d4a10a5ed.
+       dodoc "${FILESDIR}"/README-systemd
+       systemd_douserunit "${GNUPG_SYSTEMD_UNITS[@]/#/${T}/}"
+}
+
+pkg_postinst() {
+       # If /usr/bin/gpg and /usr/bin/gpgv do not exist, provide them.
+       if [[ ! -e ${EROOT}/usr/bin/gpg ]]; then
+               ln -sf -- gpg-reference "${EROOT}"/usr/bin/gpg || die
+       fi
+
+       if [[ ! -e ${EROOT}/usr/bin/gpgv ]]; then
+               ln -sf -- gpgv-reference "${EROOT}"/usr/bin/gpgv || die
+       fi
+}

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