tlslite.utils.x25519 module¶
Handling X25519 and X448 curve based key agreement protocol.
- tlslite.utils.x25519.cswap(swap, x_2, x_3)¶
Conditional swap function.
- tlslite.utils.x25519.decodeScalar22519(k)¶
Function to decode the private K parameter of the x25519 function.
- tlslite.utils.x25519.decodeScalar448(k)¶
Function to decode the private K parameter of the X448 function.
- tlslite.utils.x25519.decodeUCoordinate(u, bits)¶
Function to decode the public U coordinate of X25519-family curves.
- tlslite.utils.x25519.x25519(k, u)¶
Perform point multiplication on X25519 curve.
- Parameters:
k (bytearray) – random secret value (multiplier), should be 32 byte long
u (bytearray) – curve generator or the other party key share
- Return type:
bytearray
- tlslite.utils.x25519.x448(k, u)¶
Perform point multiplication on X448 curve.
- Parameters:
k (bytearray) – random secret value (multiplier), should be 56 bytes long
u (bytearray) – curve generator or the other party key share
- Return type:
bytearray