8000 certificate and public keys automatic updater by d-a-v · Pull Request #8218 · esp8266/Arduino · GitHub
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certificate and public keys automatic updater #8218

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Merged
merged 11 commits into from
Jul 17, 2021
Merged

certificate and public keys automatic updater #8218

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dea4e66
certificated updater
d-a-v Jul 15, 2021
873da9c
make it executable
d-a-v Jul 15, 2021
bf8c888
load certificates for authorities, not only pubkeys
d-a-v Jul 15, 2021
b8f1b2f
certify bearssl-sessions example
d-a-v Jul 15, 2021
b6cb634
update scripts, update release document to run the script
d-a-v Jul 16, 2021
9dca1da
remove useless script
d-a-v Jul 16, 2021
daf4535
public domain in main script
d-a-v Jul 16, 2021
e2cc029
fix missing EC curve initialization
d-a-v Jul 16, 2021
4d17d7b
temporary workaround for EC keys issue: using gitlab instead of githu…
d-a-v Jul 17, 2021
764edc7
add a `.sh` extension for coherency with TZUpdate and other scripts
d-a-v Jul 17, 2021
1cd1f49
Merge branch 'master' into certdl
earlephilhower Jul 17, 2021
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load certificates for authorities, not only pubkeys
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@d-a-v
d-a-v committed Jul 15, 2021
commit bf8c888262dae65cb7e3911525ad42bfb0fef420
44 changes: 31 additions & 13 deletions tools/cert.py
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Original file line number Diff line number Diff line change
Expand Up @@ -14,29 +14,47 @@
from cryptography.hazmat.primitives.serialization import Encoding
from cryptography.hazmat.primitives.serialization import PublicFormat

def printDer(der):
def printData(data, showPub = True):
try:
xcert = x509.load_der_x509_certificate(der)
xcert = x509.load_der_x509_certificate(data)
except:
xcert = pkcs7.load_der_pkcs7_certificates(der)
if len(xcert) > 1:
print('// Warning: TODO: pkcs7 has {} entries'.format(len(xcert)))
xcert = xcert[0]
try:
xcert = x509.load_pem_x509_certificate(data)
except:
try:
xcert = pkcs7.load_der_pkcs7_certificates(data)
except:
xcert = pkcs7.load_pem_pkcs7_certificates(data)
if len(xcert) > 1:
print('// Warning: TODO: pkcs7 has {} entries'.format(len(xcert)))
xcert = xcert[0]

cn = ''
for dn in xcert.subject.rfc4514_string().split(','):
keyval = dn.split('=')
if keyval[0] == 'CN':
cn += keyval[1]
name = re.sub('[^a-zA-Z0-9_]', '_', cn)
print('// CN: {} => name: {}'.format(cn, name))
fingerprint = xcert.fingerprint(hashes.SHA1()).hex(':')
print('const char fingerprint_{} [] PROGMEM = "{}";'.format(name, fingerprint))

print('// not valid before:', xcert.not_valid_before)
print('// not valid after: ', xcert.not_valid_after)
pem = xcert.public_key().public_bytes(Encoding.PEM, PublicFormat.SubjectPublicKeyInfo).decode('utf-8')
print('const char pubkey_{} [] PROGMEM = R"PUBKEY('.format(name))
print(pem + ')PUBKEY";')

if showPub:

fingerprint = xcert.fingerprint(hashes.SHA1()).hex(':')
print('const char fingerprint_{} [] PROGMEM = "{}";'.format(name, fingerprint))

pem = xcert.public_key().public_bytes(Encoding.PEM, PublicFormat.SubjectPublicKeyInfo).decode('utf-8')
print('const char pubkey_{} [] PROGMEM = R"PUBKEY('.format(name))
print(pem + ')PUBKEY";')

else:

cert = xcert.public_bytes(Encoding.PEM).decode('utf-8')
print('const char cert_{} [] PROGMEM = R"CERT('.format(name))
print(cert + ')CERT";')

cas = []
for ext in xcert.extensions:
if ext.oid == x509.ObjectIdentifier("1.3.6.1.5.5.7.1.1"):
Expand All @@ -47,7 +65,7 @@ def printDer(der):
with urllib.request.urlopen(ca) as crt:
print()
print('// ' + ca)
printDer(crt.read())
printData(crt.read(), False)
print()

def get_certificate(hostname, port, name):
Expand All @@ -63,7 +81,7 @@ def get_certificate(hostname, port, name):
print('const char* {}_host = "{}";'.format(name, hostname));
print('const uint16_t {}_port = {};'.format(name, port));
print()
printDer(ssock.getpeercert(binary_form=True))
printData(ssock.getpeercert(binary_form=True))
print('// end of certificate chain for {}:{}'.format(hostname, port))
print('////////////////////////////////////////////////////////////')
print()
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