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- # This file is licensed under the BSD 2-Clause License.
- # See https://opensource.org/licenses/BSD-2-Clause for details.
- # This is the element of a database of curve parameters. Items are indexed by their
- # human-friendly name, such as "P-256". The element has the following fields:
- #
- # - p the prime number that defines the finite field for all modulo operations
- # - b the constant in the Short Weierstrass curve equation (can be None)
- # - order the number of elements in the group with the generator below
- # - Gx the affine coordinate X of the generator point
- # - Gy the affine coordinate Y of the generator point
- # - G the generator, as an EccPoint object
- # - modulus_bits the minimum number of bits for encoding the modulus p
- # - oid an ASCII string with the registered ASN.1 Object ID
- # - context a raw pointer to memory holding a context for all curve operations (can be None)
- # - canonical the canonical name of the curve
- # - openssh the ASCII string used in OpenSSH id files for public keys on this curve
- # - rawlib the reference to the dynamic libary with the low-level functions
- # - validate a function that raises an exception if the the input point is invalid
- class _Curve(object):
- def __init__(self, p, b, order, Gx, Gy, G, modulus_bits, oid, context,
- canonical, openssh, rawlib, validate=None):
- self.p = p
- self.b = b
- self.order = order
- self.Gx = Gx
- self.Gy = Gy
- self.G = G
- self.modulus_bits = modulus_bits
- self.oid = oid
- self.context = context
- self.canonical = canonical
- self.openssh = openssh
- self.rawlib = rawlib
- self.validate = validate
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