def read_keys(keydir):
f = open(os.path.join(keydir, 'key1.priv'), "r")
b64sk = f.read()
f.close()
sk = base64.b64decode(b64sk)
pk = ed25519.publickey(sk)
return (sk, pk)
def get_crypto_signature(message, secret_key=None, keyfile=None):
if keyfile:
ioa = IoAdapterFileReader.use(keyfile)
secret_key = ioa.file.read()
ioa.close()
secret_key = base64.b64decode(secret_key)
public_key = ed25519.publickey(secret_key)
signature = ed25519.signature(message, secret_key, public_key)
b64signature = base64.b64encode(signature)
return b64signature
def generate_keys(public_key_path, secret_key_path):
"""
Generates a public and a private key pair and stores them in respective files
"""
try:
secret_key = os.urandom(64)
#sr = random.SystemRandom()
#secret_key = sr.getrandbits(512)
except NotImplementedError:
raise Exception("crypto.generate_keys: Running on a system without a safe random number generator,cannot create safe cryptographic keys on this system.")
public_key = ed25519.publickey(secret_key)
b64secret_key = base64.b64encode(secret_key)
b64public_key = base64.b64encode(public_key)
pubfile = IoAdapterFileWriter.use(public_key_path)
pubfile.file.write(codecs.decode(b64public_key,'utf-8'))
pubfile.close()
secfile = IoAdapterFileWriter.use(secret_key_path)
secfile.file.write(codecs.decode(b64secret_key,'utf-8'))
secfile.close()