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