nnathan / eccsnacks Goto Github PK

import ed25519 as ec
from eccsnacks import curve25519

print("Creating keypair through ed25519.")
privateKey, publicKey = ec.create_keypair(entropy=lambda x: b'a' * x)

print("  Private key:", repr(privateKey.to_seed()))
print("  Public key: ", repr(publicKey.to_bytes()))
print("      Length: ", len(publicKey.to_bytes()))

print()
print("Deriving public key through eccsnacks.")

# Convert the bytestring to an equivalent regular string, aka py3 nonsense.
# Because eccsnacks expects a regular string for its `pack` and `unpack`.
toRawString = lambda b:  "".join(chr(c)          for c in b)
toBytes     = lambda s: b"".join(bytes([ord(c)]) for c in s)

privkeyStr = toRawString(privateKey.to_seed())
derivedPubkey = curve25519.scalarmult_base(privkeyStr)

print("  Public key:", repr(derivedPubkey))
print("   as bytes: ", toBytes(derivedPubkey))
print("      length:", len(toBytes(derivedPubkey)))