Add Mbed TLS 4.x support (PSA Crypto) (#2502)

* Add Mbed TLS 4.x support (PSA Crypto) for macOS

Auto-detect Mbed TLS 4.x via MBEDTLS_VERSION_MAJOR and adapt the backend:
- Include psa/crypto.h and drop the headers removed in 4.x (ctr_drbg,
  entropy, md5, sha*), gated behind the version macro.
- Compute MD5/SHA-256/SHA-512 via PSA (psa_hash_compute) and initialize
  PSA Crypto once with std::call_once.
- Drop the explicit entropy/CTR-DRBG RNG (PSA provides the TLS RNG) and
  skip the RNG-callback overloads of pk_parse_key/pk_check_pair on 4.x.
- Retry on a TLS 1.3 NewSessionTicket (the 4.x default) in connect, read,
  write and is_peer_closed via a single mbedtls_is_session_ticket() helper,
  so online HTTPS works, including large redirected downloads where the
  ticket arrives mid-write.

Note V4 implies V3, so 3.x-only paths now check V3 && !V4.

Build systems (macOS): the CMake config and pkg-config shipped by Homebrew
resolve 4.x transitively, so CMakeLists.txt and meson.build need no change
for linking; the Makefile links libtfpsacrypto when present, else
libmbedcrypto.

Tests: generate the encrypted client key as both PBES2-AES (3.6+/4.x,
OpenSSL, wolfSSL) and PBES1-3DES (Mbed TLS 2.28) and pick by version, since
4.x dropped DES and 2.28 lacks PBES2. Also generate the IP-host certs in
test/meson.build to match gen-certs.sh and CMakeLists.txt.

* CI: test Mbed TLS 4.x on macOS, 3.x on Ubuntu 26.04

Homebrew's default mbedtls is now 4.x, so switch the macOS build and CI job
to it (drop the mbedtls@3 pin). That leaves 3.x (Ubuntu 24.04 apt ships 2.28,
macOS now 4.x) uncovered, so add an ubuntu-26.04 job whose apt provides Mbed
TLS 3.6. Net coverage: 2.28 (ubuntu-latest), 3.6 (ubuntu-26.04), 4.2 (macOS).

ubuntu-26.04 is a public-preview runner image; fold it into the main ubuntu
matrix once ubuntu-latest moves to 26.04.

* Document Mbed TLS 4.x support and libtfpsacrypto rename

Update README.md and the tour's TLS setup pages (en/ja) to note that
Mbed TLS 4.x is now auto-detected and that it renames libmbedcrypto
to libtfpsacrypto.
This commit is contained in:
yhirose
2026-07-21 18:45:48 -04:00
committed by GitHub
parent 6c4cbd49a2
commit 54b3c1d072
10 changed files with 241 additions and 40 deletions

View File

@@ -81,17 +81,20 @@ client_cert_pem = custom_target(
command: [openssl, 'x509', '-in', '@INPUT0@', '-days', '370', '-req', '-CA', '@INPUT1@', '-CAkey', '@INPUT2@', '-CAcreateserial', '-out', '@OUTPUT@']
)
client_encrypted_key_pem = custom_target(
'client_encrypted_key_pem',
output: 'client_encrypted.key.pem',
command: [openssl, 'genrsa', '-aes256', '-passout', 'pass:test012!', '-out', '@OUTPUT@', '2048']
# Encrypted client key: make an unencrypted key + cert first, then wrap the same
# key two ways. Mbed TLS 4.x dropped DES/PBES1, while Ubuntu's Mbed TLS 2.28 has
# no PBES2-AES, so ship both and let test.cc pick by version.
client_encrypted_tmp_key_pem = custom_target(
'client_encrypted_tmp_key_pem',
output: 'client_encrypted.tmp.key.pem',
command: [openssl, 'genrsa', '-out', '@OUTPUT@', '2048']
)
client_encrypted_temp_req = custom_target(
'client_encrypted_temp_req',
input: client_encrypted_key_pem,
input: client_encrypted_tmp_key_pem,
output: 'client_encrypted_temp_req',
command: [openssl, 'req', '-new', '-batch', '-config', test_conf, '-key', '@INPUT@', '-passin', 'pass:test012!', '-out', '@OUTPUT@']
command: [openssl, 'req', '-new', '-batch', '-config', test_conf, '-key', '@INPUT@', '-out', '@OUTPUT@']
)
client_encrypted_cert_pem = custom_target(
@@ -101,6 +104,39 @@ client_encrypted_cert_pem = custom_target(
command: [openssl, 'x509', '-in', '@INPUT0@', '-days', '370', '-req', '-CA', '@INPUT1@', '-CAkey', '@INPUT2@', '-CAcreateserial', '-out', '@OUTPUT@']
)
client_encrypted_key_pem = custom_target(
'client_encrypted_key_pem',
input: client_encrypted_tmp_key_pem,
output: 'client_encrypted.key.pem',
command: [openssl, 'pkcs8', '-topk8', '-v2', 'aes-256-cbc', '-in', '@INPUT@', '-passout', 'pass:test012!', '-out', '@OUTPUT@']
)
client_encrypted_pbes1_key_pem = custom_target(
'client_encrypted_pbes1_key_pem',
input: client_encrypted_tmp_key_pem,
output: 'client_encrypted_pbes1.key.pem',
command: [openssl, 'pkcs8', '-topk8', '-v1', 'PBE-SHA1-3DES', '-in', '@INPUT@', '-passout', 'pass:test012!', '-out', '@OUTPUT@']
)
# Certificates for IP-host hostname verification regression tests.
# cert_ip_cn.pem: CN is an IPv4 literal with NO subjectAltName, so verifying an
# IP host against it must fail (an IP is never matched via the CN).
cert_ip_cn_pem = custom_target(
'cert_ip_cn_pem',
input: key_pem,
output: 'cert_ip_cn.pem',
command: [openssl, 'req', '-x509', '-key', '@INPUT@', '-sha256', '-days', '3650', '-nodes', '-subj', '/CN=127.0.0.1', '-out', '@OUTPUT@']
)
# cert_ipv6.pem: CN is an IPv6 literal plus a different IPv6 iPAddress SAN; the
# SAN address must match and the CN address must be ignored.
cert_ipv6_pem = custom_target(
'cert_ipv6_pem',
input: key_pem,
output: 'cert_ipv6.pem',
command: [openssl, 'req', '-x509', '-key', '@INPUT@', '-sha256', '-days', '3650', '-nodes', '-subj', '/CN=::1', '-addext', 'subjectAltName=IP:2001:db8::1', '-out', '@OUTPUT@']
)
# Copy test files to the build directory
configure_file(input: 'ca-bundle.crt', output: 'ca-bundle.crt', copy: true)
configure_file(input: 'image.jpg', output: 'image.jpg', copy: true)
@@ -139,7 +175,10 @@ test(
client_key_pem,
client_cert_pem,
client_encrypted_key_pem,
client_encrypted_cert_pem
client_encrypted_pbes1_key_pem,
client_encrypted_cert_pem,
cert_ip_cn_pem,
cert_ipv6_pem
],
workdir: meson.current_build_dir(),
timeout: 300