• Read every file of debian/ in full, and every file of the tree apart from .pc/; grepped the whole tree with gitignore: false for Copyright, (C), ©, SPDX-License-Identifier, Licensed under, Permission is hereby granted, GNU General|Lesser, Apache License, Mozilla Public, public domain and All rights reserved. Notices appear only in LICENSE, README.md, debian/copyright and secsipid/system_cas.go.
• LICENSE is the Clear BSD licence; the License: BSD-3-Clause-Clear paragraph in debian/copyright reproduces it word for word, patent disclaimer included, and is given in full (there is no /usr/share/common-licenses file for it). It is DFSG-free: attribution and name-endorsement conditions only.
• secsipid/system_cas.go:3 says Copied and pasted from go standard library: "crypto/x509" package!!; the matching stanza credits 2009 The Go Authors under BSD-3-Clause, whose full text is also present in debian/copyright. A grep for Copied|copied from|standard library|The Go Authors finds no other copied third-party code.
• secsipidx.1 says in .SH AUTHOR that Victor Seva wrote it, matching the stanza that assigns it to him under BSD-3-Clause-Clear; the file is also in secsipidx_2.0.0.orig.tar.gz, so the copyright line describes an upstream file correctly.
• csecsipid/libsecsipid.h is cgo output (Code generated by cmd/cgo; DO NOT EDIT.). Its input, csecsipid/csecsipid.go, is shipped, and csecsipid/Makefile's install-dev copies the header regenerated in _build by the c-buildmode=c-shared/c-archive builds, so the installed header is not a stale committed artifact. csecsipid/secsipid.h is a hand-written wrapper around it.
• The files named in secsipid/.gitignore are not shipped and are not missing: secsipid/secsipid_test.go creates and removes dummyCA.pem, dummyInterCA.pem and dummyCRLFile.crl itself (os.WriteFile("dummyCA.pem", certGenerator.caPEMBytes, 0777)), and the http_*/*.so/*.a entries cover test and build output. .github/FUNDING.yml only names a GitHub account (github: [miconda]).
• No vendored Go code: go.mod/go.sum only name modules that the GOPATH-mode build resolves from Debian golang-*-dev packages; golang-github-google-uuid-dev and golang-github-redis-go-redis-dev are Build-Depends, and golang-github-gomagedon-expectate-dev <!nocheck> covers the tests. Transitive sources of go-redis (xxhash, go-rendezvous) arrive through that package's own Depends.
• debian/rules builds through the upstream Makefile (make -C $(B) lib, install-dirs, install-lib-all) into debian/tmp; libsecsipid-dev.install takes usr/include/, *.a, *.so and pkgconfig/*.pc, libsecsipid2.install takes *.so.*. ${DEB_HOST_MULTIARCH} substitution in install files is available at compat 13, as the dh_install(1) example states, and DEB_HOST_MULTIARCH is exported by dpkg-buildpackage.
• libsecsipid2 is Multi-Arch: same and ships only files below /usr/lib/${DEB_HOST_MULTIARCH}, so the identical-files rule of Policy 5.6.34.3 holds; libsecsipid-dev is deliberately not, which is right because the cgo header in /usr/include differs between word sizes (cgo emits typedef long long GoInt64; typedef GoInt64 GoInt; on 64-bit and 32-bit int types).
• libsecsipid2.symbols begins libsecsipid.so.2 libsecsipid2 #MINVER#, matching the SONAME set in csecsipid/Makefile (-extldflags=-Wl,-soname,${SOLIBNAME}, SOLIBNAME=libsecsipid.so.2) and the binary package name; the new 2.0.0 entries (SecSIPIDOptGetN, crosscall1, threadentry, x_crosscall2_ptr) carry 2.0.0, and the runtime symbols are optional/regex-matched.
• Built-Using: ${misc:Static-Built-Using} in all three packages is produced by dh_golang (addsubstvar($package, "misc:Static-Built-Using", $static_built_using) in /usr/bin/dh_golang), so the field is populated rather than empty; naming it explicitly is correct below compat 14.
• Both patches have DEP-3 headers (From, Date, Subject, Forwarded: https://github.com/asipto/secsipidx/pull/36) and do what the changelog says: rename the pkg-config file for the API bump and make LIBDIR/the .pc file configurable. debian/source/format is 3.0 (quilt).
• Standards-Version 4.7.4 has the same first two components as the reviewing system's Policy 4.7.4.1, so it is current.
• The prescan's author check reported that every holder it saw is named in debian/copyright, and it listed no individual files, so there is nothing further from the scan to account for. debian/watch was not reviewed, per the instructions.
• uscan found the packaged version as the newest upstream release (upstream 2.0.0, packaged 2.0.0).

• No build was run, so the exact symbol set of the built libsecsipid.so.2.0.0 against debian/libsecsipid2.symbols, and the content of the header the build regenerates, could not be inspected; dh_makeshlibs would show them.
• The Go module versions in go.mod (notably github.com/redis/go-redis/v9 v9.23.0) are ignored by the GOPATH-mode build, and Debian's golang-github-redis-go-redis-dev is 9.17.2; its sources are not installed on this system, so the go-redis API used in secsipid/cache_redis.go (Options.ContextTimeoutEnabled) could not be checked against them. A build would settle it.

None.