Created
March 7, 2013 09:43
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import requests | |
from M2Crypto import BIO, RSA, EVP, X509 | |
def verify_message(pem, msg, sig): | |
cert = X509.load_cert_string(pem) | |
pubkey = cert.get_pubkey() | |
sig = sig.decode('base64') | |
# Write a few files to disk for debugging purposes | |
f = open("sig", "wb") | |
f.write(sig) | |
f.close() | |
f = open("msg", "w") | |
f.write(msg) | |
f.close() | |
f = open("mypubkey.pem", "w") | |
f.write(pubkey.get_rsa().as_pem()) | |
f.close() | |
pubkey.reset_context(md='sha1') | |
pubkey.verify_init() | |
pubkey.verify_update(msg) | |
return pubkey.verify_final(sig) | |
PEM = """-----BEGIN CERTIFICATE----- | |
MIICsDCCAhmgAwIBAgIJAJrZExFauz5pMA0GCSqGSIb3DQEBBQUAMEUxCzAJBgNV | |
BAYTAkFVMRMwEQYDVQQIEwpTb21lLVN0YXRlMSEwHwYDVQQKExhJbnRlcm5ldCBX | |
aWRnaXRzIFB0eSBMdGQwHhcNMTMwMzA3MDkzNjQyWhcNMTgwMzA3MDkzNjQyWjBF | |
MQswCQYDVQQGEwJBVTETMBEGA1UECBMKU29tZS1TdGF0ZTEhMB8GA1UEChMYSW50 | |
ZXJuZXQgV2lkZ2l0cyBQdHkgTHRkMIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKB | |
gQDRiW70Ea0CIrJmv9nwO0882mZ51ygAqQrQLfaYB2EUE5SRE99GaQbT9TsmcPK1 | |
aG5ZDmazWRGBWe8UCL0W6fFrkg6Cb6VwFGqUSAsFhlT+XhOqAF9p3dfqu3S85zyY | |
7zJ5YIAMgDbd8/KmaqP8xn2aNY1cUxN/0HxOB4fz2/f/YQIDAQABo4GnMIGkMB0G | |
A1UdDgQWBBRj2EiZsFFFc4IbLHJa9CupE9ynbzB1BgNVHSMEbjBsgBRj2EiZsFFF | |
c4IbLHJa9CupE9ynb6FJpEcwRTELMAkGA1UEBhMCQVUxEzARBgNVBAgTClNvbWUt | |
U3RhdGUxITAfBgNVBAoTGEludGVybmV0IFdpZGdpdHMgUHR5IEx0ZIIJAJrZExFa | |
uz5pMAwGA1UdEwQFMAMBAf8wDQYJKoZIhvcNAQEFBQADgYEAip8XS5JX3hFG8wjZ | |
0FxqU/FLjSJkGrAscs16y7iq9YnUIfPt0Fha4a36vB5nG42vai10BtLgZEP/mifJ | |
DQXbDZA46G7gBiV9AvqtJWDNOfn7c34g23G9lxIEuU8ptLoyN+38TFdS+eWQDo/q | |
a/1IvCESUYYY43s+aOp6nbkDoGw= | |
-----END CERTIFICATE----- | |
""" | |
MSG = """ | |
""" | |
SIG = """ | |
FFOSR4UhPjheKN3hNAXIh/XL5OByp23+Gk+NRgonsZoI0eQHJn7nCEr/b1NbL/DP7UVL7o | |
nM6+RC1/yjiSi4J8wj4kqs19PY4ZGQXbnnDxutJoMfo+lhRA/H+jTPL5u8bs/d07ln0eHl | |
AzyOCxee3DRTxJKbmQewb48xhmou4jQ= | |
""" | |
print verify_message(PEM, PEM, SIG) |
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