b41d12c0b8
* Regenerate the CRL that expired in September 2025 * Refresh the expired certificates embedded in certloadverifybuffer * Return 0 from tls servers that returned a wolfSSL_write byte count * Send a client certificate from client-tls and client-tls13-resume * Return 0 from certverify instead of WOLFSSL_SUCCESS * Give the XTS demo key two different halves * Exit success after ml_dsa prints its parameter table * Report failure from the custom io file client and server * Latch failures across every ecc-params curve lookup * Ignore SIGPIPE in the btle fifo transport * Fix the dtls rw-threads certificate paths * Make runall.sh fail when an example fails * Make openssl-verify.sh actually verify and actually fail * Raise the generate_ssl.sh common name length limit * Port the PQ examples to the current wolfSSL API * Return 0 from csr_w_ed25519_example and rsa-public-decrypt-app * Build the x509_acert openssl example against the right headers * Give the examples Makefiles a consistent wolfSSL prefix * Fix the double free and NULL derefs in the custom io cleanup paths * Stop forcing the ESP32 examples to include a developer private config * Add the missing WiFi Kconfig to the DTLS13 station examples * Use XSTRLCPY in client-dtls13 since wolfSSL has no XSTRCPY * Make the DTLS13 example ctx static so it stops colliding with libnet80211 * Set SO_REUSEADDR on the tls servers that lacked it * Give puf the wolfSSL sources and stop building the IDF 4.4 only ENC28J60 examples * Set SO_REUSEADDR on server-tcp as well * Exit the can-bus client on EOF and give it real input in CI * Re-arm the select timeout each pass in the nonblocking dtls server * Keep the shared memory BIOs alive until both sides are done * Port the ebpf tracers to the libbpf 1.0 perf_buffer__new signature * Clone wolfSSL before make builds its graph so uefi-static builds from a clean tree * Raise wolfcryptjni compileSdk to 32 for the BigInteger API its submodule uses * Link wolfentropy.o and keep wc_port socket helpers out of the UEFI build * Track the wolfSSL dilithium.c to wc_mldsa.c rename and drop a stale java import * Move uefi-library to the wc_MlDsa API after the wolfSSL dilithium rename * Declare the launcher activity exported, required from API 31 * Configure wolfSSL before make in the fullstack setup script * Track the wolfSSL io.c to wolfio.c rename in the ndk sample * Keep glibc headers out of the freestanding uefi-library build * Track the wolfSSL mlkem.h rename and give RT1060 the SDK name it selects on * Track the wolfIP struct ll rename and pin wolfIP to its v1.0 release * Use getaddrinfo in the ndk sample since bionic does not declare gethostbyname * Cross compile RT1060 with arm-none-eabi and document the SDK value the Makefile matches * Enable wolfIP HTTP so its httpd.h actually declares the API the example calls * Define HAVE_NETDB_H so wolfio.c includes the header its getaddrinfo path needs * Link pkcs12.o, which RT1060 enables by default and wolfcrypt test calls * Port the ENC28J60 examples to the ESP-IDF 5.x ethernet API * Compile dtls.c in the ndk sample, which enables WOLFSSL_DTLS * Define the PHY identifier registers the removed IDF header supplied * Compile kdf.c in the ndk sample for the TLS PRF * Give RT1060 a current_time so the benchmark stops needing clock_gettime * Port the ENC28J60 PHY to the IDF 5.x autonego_ctrl vtable * Remove the ENC28J60 server's duplicate driver copy that main already builds * Return the DTLS server to accept on close_notify so a resume is heard * Run the C# pq client/server pair under mono * Define WOLFSSL_CERT_REQ so the ndk-gradle app links wolfssljni's X509_REQ calls * Refresh the expired client ECC DER certificate * Add CI that builds and runs every example against wolfSSL master and stable * Sign OCSP staples with a responder intermediate1 actually delegated * Report a failing PKCS#11 example instead of always exiting 0 * Link the PSA library the README's PSA_LIB_PATH names * Widen the mynewt pointer prints so they build on a 64 bit native BSP * Test RSA under UEFI with a 2048 bit key so it clears wolfSSL's minimum * Left pad the ECDSA r and s so a leading zero cannot shift the signature * Document the smime and indef flags the pkcs7 examples need * Fail ecc-verify when the signature does not verify * Fail ecc-sign when a round produces an invalid signature * Fail aesgcm-file-encrypt when its sanity test does not pass * Check that ML-KEM derives the same shared secret on both sides * Fail ecdh_gen_secret when the two sides derive different secrets * Return the DH key agreement error instead of always exiting 0 * Retry the fullstack HTTPS probe so a slow sim start does not fail it * Confirm the custom-io file transfer succeeded so CI can assert it * Print a success line from the silent file-encrypt and ecc-export examples * Add device-sims job running ATECC608 STSAFE and TROPIC01 sim wolfcrypt tests * Extend device-sims to STM32 and PIC32MZ for the full sim fleet * Mount wolfSSL for the STM32 and PIC32MZ sim wolfcrypt runs * Accept the zero success return from wolfSSL_CTX_set_max_early_data * Read the earlydata reply so the client processes the session ticket before resuming * Read the earlydata reply in the DTLS client so it processes the session ticket * Run the tls13 and dtls13 earlydata pairs now that the clients process the ticket * Let expect_fail clear on refs that carry the fix via a fixed_on marker * Retry the PSA TLS 1.3 handshake so an intermittent ECC reject does not fail CI * Retry network fetches across CI so a transient blip does not fail a job * Normalize do_ecc and do_25519 exit codes like do_448 so an error is never masked to 0 * Build and run the merged-in hsm dtls_client example in CI via a dedicated hsm.yml job * Add a make check target to each applicable example * Run only the example and lint smoke set on draft PRs * Only run a per-target workflow when its own example dir changes * Assert the real se050 wolfcrypt result instead of an early sub-test line * Size the RSA 2048 key export buffers so the UEFI test does not fail on BUFFER_E * Call the always-present MLDSA context API from the UEFI driver * Cross uefi-static and uefi-library with both wolfSSL refs in the matrix * Give each tpm matrix leg a ref-unique results file and artifact * Add a codespell spellcheck pass to the lint job * Run push CI on master only so a PR branch does not double-trigger * Select valgrind by caller_run_id since event_name is the caller under workflow_call * Make example check targets catch real failures with pipefail exit checks and inputs * Wire the harness to run make check for mode check examples starting with ecc * Migrate the single-entry exec examples to mode check and fold their inputs into the check targets * Fix four make check assertions that misfired under pipefail * Give the tpm manifest entry a run step so it asserts output * Skip uefi-static in the lint make -n loop so it does not clone * Assert the actual verify result in the pkcs7 and rsa-nb checks * Return nonzero from pkcs12-create-example on a failed create so the check is not a false pass * Return nonzero from rsa-kg on any key generate or write failure * Assert the static memory checks by exit code instead of a pipefail grep that BSD make lacks * Run pkcs7 signedData stream through make check so it asserts the real verify result * Check DER certificates and CRLs in the expiry canary too * Feed the wolfHSM client its stdin so run_client actually exchanges data * Assert every make check by exit code and captured output instead of a pipefail grep so they hold under BSD make |
||
|---|---|---|
| .. | ||
| Makefile | ||
| README.md | ||
| aes-cbc.c | ||
| aes-ccm.c | ||
| aes-cfb.c | ||
| aes-cfb1.c | ||
| aes-cfb8.c | ||
| aes-ctr.c | ||
| aes-cts.c | ||
| aes-direct.c | ||
| aes-eax.c | ||
| aes-ecb.c | ||
| aes-gcm.c | ||
| aes-gmac.c | ||
| aes-keywrap.c | ||
| aes-ofb.c | ||
| aes-siv.c | ||
| aes-xts.c | ||
| testfile.txt | ||
| testfile_direct.txt | ||
| testfile_keywrap.txt | ||
README.md
AES Mode Examples
This directory contains examples demonstrating all 16 AES modes supported by wolfSSL's wolfCrypt library. Each example encrypts a file using the one-shot API and decrypts it using the streaming API (where available).
Overview
Each example demonstrates:
- One-shot encryption using the mode's encrypt function
- Streaming decryption using Init/Update/Final pattern (if available)
- Proper key/IV/nonce generation and handling
- File I/O for practical usage
AES Modes
| Mode | File | Streaming Decrypt | Build Flag | Description |
|---|---|---|---|---|
| CBC | aes-cbc.c | No | HAVE_AES_CBC | Cipher Block Chaining |
| CFB | aes-cfb.c | Yes | WOLFSSL_AES_CFB | Cipher Feedback (128-bit) |
| CFB1 | aes-cfb1.c | Yes | WOLFSSL_AES_CFB | Cipher Feedback (1-bit) |
| CFB8 | aes-cfb8.c | Yes | WOLFSSL_AES_CFB | Cipher Feedback (8-bit) |
| OFB | aes-ofb.c | Yes | WOLFSSL_AES_OFB | Output Feedback |
| ECB | aes-ecb.c | No | HAVE_AES_ECB | Electronic Codebook |
| CTR | aes-ctr.c | Yes | WOLFSSL_AES_COUNTER | Counter Mode |
| DIRECT | aes-direct.c | No | WOLFSSL_AES_DIRECT | Raw Block Cipher |
| GCM | aes-gcm.c | Yes* | HAVE_AESGCM | Galois/Counter Mode (AEAD) |
| GMAC | aes-gmac.c | No | HAVE_AESGCM | Galois MAC (auth only) |
| CCM | aes-ccm.c | No | HAVE_AESCCM | Counter with CBC-MAC (AEAD) |
| KEY WRAP | aes-keywrap.c | No | HAVE_AES_KEYWRAP | RFC 3394 Key Wrap |
| XTS | aes-xts.c | Yes* | WOLFSSL_AES_XTS | XEX-based Tweaked-codebook |
| SIV | aes-siv.c | No | WOLFSSL_AES_SIV | Synthetic IV (AEAD) |
| EAX | aes-eax.c | Yes | WOLFSSL_AES_EAX | Encrypt-Authenticate-Translate |
| CTS | aes-cts.c | No* | WOLFSSL_AES_CTS | Ciphertext Stealing |
*GCM streaming requires WOLFSSL_AESGCM_STREAM, XTS streaming requires WOLFSSL_AESXTS_STREAM, CTS streaming API requires complex internal buffering and is not demonstrated in this example
Building
Prerequisites
wolfSSL must be installed with the required AES modes enabled. To enable all modes:
cd /path/to/wolfssl
./autogen.sh
./configure --enable-aescbc \
--enable-aescfb \
--enable-aesofb \
--enable-aesecb \
--enable-aesctr \
--enable-aesgcm \
--enable-aesccm \
--enable-aeskeywrap \
--enable-xts \
--enable-aessiv \
--enable-aeseax \
--enable-aescts \
--enable-aesgcm-stream \
--enable-aesxts-stream
make
sudo make install
Building the Examples
make
Usage
All examples follow the same pattern:
./<example> <input_file> <output_file>
The example will:
- Read the input file
- Encrypt it using the one-shot API
- Write encrypted data to a temporary file
- Decrypt using streaming API (or one-shot if no streaming available)
- Write decrypted data to the output file
- Clean up temporary files
Example
# Create a test file
echo "Hello, wolfSSL AES modes!" > test.txt
# Test AES-GCM
./aes-gcm test.txt output.txt
cat output.txt
# Test AES-CTR
./aes-ctr test.txt output.txt
cat output.txt
Notes
Security Considerations
- These examples use fixed keys for demonstration purposes only
- In production, use proper key management and secure random key generation
- ECB mode is not recommended for most use cases due to security weaknesses
- GMAC provides authentication only (no encryption)
Streaming vs One-Shot
Modes with streaming support allow processing data in chunks, which is useful for:
- Large files that don't fit in memory
- Network streams where data arrives incrementally
- Memory-constrained environments
Modes without streaming support require the entire plaintext/ciphertext to be available before processing.
Minimum Input Sizes
Some modes have minimum input size requirements:
- XTS: Minimum 16 bytes
- CTS: Minimum 16 bytes
- KEY WRAP: Input must be multiple of 8 bytes (padding applied automatically)