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https://github.com/carglglz/mpy-mbedtls
MicroPython bindings for some MbedTLS EC and x509 cert/csr functions.
https://github.com/carglglz/mpy-mbedtls
ecdsa mbedtls micropython tls
Last synced: about 2 months ago
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MicroPython bindings for some MbedTLS EC and x509 cert/csr functions.
- Host: GitHub
- URL: https://github.com/carglglz/mpy-mbedtls
- Owner: Carglglz
- License: mit
- Created: 2022-10-02T02:16:57.000Z (about 2 years ago)
- Default Branch: main
- Last Pushed: 2024-04-02T01:55:23.000Z (9 months ago)
- Last Synced: 2024-10-17T21:34:56.416Z (2 months ago)
- Topics: ecdsa, mbedtls, micropython, tls
- Language: C
- Homepage:
- Size: 60.5 KB
- Stars: 3
- Watchers: 1
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
### mpy-mbedtls
MicroPython bindings for ECDSA keys basic functionality and x509 cert/csr utilities.
*Supports both PEM and DER formats*
#### Features:
`mbedtls` module (low level):
- Generate ECDSA key pair
- Derive public key from private key
- Sign data
- Verify signature
`x509` module:
- Generate a certificate signing request (CSR)
- Parse certificate
- Verify certificate
`ecdsa` module (Same as mbedtls but OOP):
- Generate ECDSA key pair
- Derive public key from private key
- Parse private/public key file
- Sign data
- Verify signature
- Sign file
- Verify file signature
- Export private/public key to file
#### Install
`esp32` port:
In `micropython/ports/esp32`
make a `mbedtls` dir and copy `mpy-mbedtls/mbedtls/mbedtls_config.h` into this `mbedtls`
e.g.
```console
ports/esp32: $ mkdir mbedtls
ports/esp32: $ cp ../../..//mpy-mbedtls/mbedtls/mbedtls_config.h mbedtls/
```
then build the firmware with:
```console
ports/esp32: $ make BOARD=GENERIC USER_C_MODULES=../../../..//mpy-mbedtls/micropython.cmake FROZEN_MANIFEST=/mpy-mbedtls/ports/esp32/manifest.py -j4
```
Other ports (e.g. `unix`):
Needs enabling additional options for mbedtls, see `mpy-mbedtls/mbedtls/mbedtls_config.h`
In `micropython/ports/unix`
```
$ make USER_C_MODULES=../../..//mpy-mbedtls FROZEN_MANIFEST=../../..//mpy-mbedtls/ports/unix/manifest.py -j4
```
#### Run tests
In `micropython/tests`
```
$ ./run-tests.py ../..//mpy-mbedtls/tests/test_*.py
pass ../../user_modules/mpy-mbedtls/tests/test_mbedtls_ec_curves.py
pass ../../user_modules/mpy-mbedtls/tests/test_mbedtls_ec_keyp_der.py
pass ../../user_modules/mpy-mbedtls/tests/test_mbedtls_ec_keyp.py
pass ../../user_modules/mpy-mbedtls/tests/test_x509_cert_parse.py
pass ../../user_modules/mpy-mbedtls/tests/test_ecdsa.py
pass ../../user_modules/mpy-mbedtls/tests/test_x509_gen_csr.py
pass ../../user_modules/mpy-mbedtls/tests/test_x509_cert_validate.py
7 tests performed (19 individual testcases)
7 tests passed
```
#### Example
```python
import ecdsa
keyp = ecdsa.ECKeyp()
print("PRIVATE KEY:")
print(keyp.pkey.decode())
print("PUBLIC KEY:")
print(keyp.pubkey.decode())
msg = "hello world"
# Sign
signature = keyp.sign(msg)
assert isinstance(signature, bytes)
print("Signature: OK")
# Verify signature
verification = keyp.verify(msg, signature)
assert verification
print("Verification: OK")
```
```
>>> import example
PRIVATE KEY:
-----BEGIN EC PRIVATE KEY-----
MHcCAQEEIGrK/lMb3BvPEk2LhBmRWj01duluiI/qagOFQaXfGIOAoAoGCCqGSM49
AwEHoUQDQgAEzKw4gnXWWVfNy2dP6WYzJ4UN/E5DPhyJdUEtYC4j8PvXTnFPdpga
XXN+n0oofGF/aTfwX3UqNkc+qvUKtkPzKg==
-----END EC PRIVATE KEY-----
PUBLIC KEY:
-----BEGIN PUBLIC KEY-----
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEzKw4gnXWWVfNy2dP6WYzJ4UN/E5D
PhyJdUEtYC4j8PvXTnFPdpgaXXN+n0oofGF/aTfwX3UqNkc+qvUKtkPzKg==
-----END PUBLIC KEY-----
Signature: OK
Verification: OK
```
See other examples in `mpy-mbedtls/tests`