utils.certificate package

utils.certificate.tools module

utils.certificate.tools.certificate_hashing(cert_der, algorithm='sha256')

Performs the hash of a provided X509 certificate.

Parameters:
  • cert_der (binary DER) – x509 certificate.
  • algorithm (str) – hashing algorithm. Sha256 will be used as default.
Returns:

The hash of the certificate performed using the provided hashing function.
Return type:

binary
utils.certificate.tools.check_blind_hash(cert_der, blinded_hash, r, ca_cert)

Compute the blind hash of the provided certificate and check if it match with the provided blinded hash

Parameters:
  • cert_der (binary DER) – input certificate.
  • blinded_hash (binary) – input blinded hash to be checked.
  • r (long) – blinding factor used to perform the blind hash.
  • ca_cert (M2Crypto.X509()) – CA cert. It will be used to extract the public key and perform the hash blinding.
Returns:

True if the hashes match, False otherwise.
Return type:

bool
utils.certificate.tools.check_certificate(bitcoin_address, certs_path)

Checks if a certificate exists in the certificate directory.

Parameters:
  • bitcoin_address (str) – name of the certificate to look for.
  • certs_path (str) – system path where the certificate are stored.
Returns:

True if the certificate exists, False otherwise.
Return type:

bool
utils.certificate.tools.store_certificate(certificate, filename='paysense', extension='.crt')

Stores a certificate in a human readable format.

Parameters:
  • certificate (binary DER) – certificate to be stored.
  • filename (str) – name or system path (including name) where the certificate will be stored (without extension).
  • extension (str) – file extension.
Returns:

None