pybitmessage.highlevelcrypto module¶

High level cryptographic functions based on pyelliptic OpenSSL bindings.

Note

Upstream pyelliptic was upgraded from SHA1 to SHA256 for signing. We must upgrade PyBitmessage gracefully. More discussion.

makeCryptor(privkey, curve='secp256k1')[source]¶: Return a private pyelliptic.ECC instance

privToPub(privkey)[source]¶: Converts hex private key into hex public key

encrypt(msg, hexPubkey)[source]¶: Encrypts message with hex public key

sign(msg, hexPrivkey)[source]¶: Signs with hex private key using SHA1 or SHA256 depending on “digestalg” setting

verify(msg, sig, hexPubkey)[source]¶: Verifies with hex public key using SHA1 or SHA256

pointMult(secret)[source]¶

Does an EC point multiplication; turns a private key into a public key.

Evidently, this type of error can occur very rarely:

>>> File "highlevelcrypto.py", line 54, in pointMult
>>>  group = OpenSSL.EC_KEY_get0_group(k)
>>> WindowsError: exception: access violation reading 0x0000000000000008