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fixes for OpenSSLGroups
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Janis Erdmanis committed Oct 30, 2024
1 parent d6e0744 commit 913e48e
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Showing 4 changed files with 64 additions and 45 deletions.
2 changes: 1 addition & 1 deletion Project.toml
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
name = "CryptoGroups"
uuid = "bc997328-bedd-407e-bcd3-5758e064a52d"
authors = ["Janis Erdmanis <janiserdmanis@protonmail.ch>"]
version = "0.5.0"
version = "0.5.1"

[deps]
CryptoPRG = "d846c407-34c1-46cb-aa27-d51818cc05e2"
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7 changes: 4 additions & 3 deletions src/Curves/ecpoint.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -35,10 +35,11 @@ Base.:-(u::P, v::P) where P <: AbstractPoint = u + (-v)

Base.isless(x::P, y::P) where P <: AbstractPoint = gx(x) == gx(y) ? gx(x) < gx(y) : gy(x) < gy(y)

function validate(x::AbstractPoint, order::Integer, cofactor::Integer)
function validate(x::P, order::Integer, cofactor::Integer) where P <: AbstractPoint

oncurve(x) || throw(ArgumentError("Point is not in curve"))
x * cofactor != zero(x) || throw(ArgumentError("Point is in cofactor subgroup"))
#x * cofactor != zero(P) || throw(ArgumentError("Point is in cofactor subgroup"))
!iszero(x * cofactor) || throw(ArgumentError("Point is in cofactor subgroup"))

return
end
Expand Down Expand Up @@ -130,7 +131,7 @@ name(::Type{ECPoint{P, S}}) where {P <: AbstractPoint, S} = isnothing(S.name) ?

eq(::Type{ECPoint{P, S}}) where {P <: AbstractPoint, S} = eq(P)
field(::Type{ECPoint{P, S}}) where {P <: AbstractPoint, S} = field(P)

field(::Type{ECPoint{P}}) where {P <: AbstractPoint} = field(P)

"""
zero(::Union{P, Type{P}}) where P <: AbstractPoint
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98 changes: 58 additions & 40 deletions src/macros.jl
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Original file line number Diff line number Diff line change
@@ -1,6 +1,5 @@
using .Specs: modp_spec

# TODO: Add support for @PGroup{p = _p, q = _q} where _q and _p are defined out of the scope
macro PGroup(expr)
if expr.head == :braces
if length(expr.args) == 1 && !(expr.args[1] isa Expr)
Expand All @@ -9,15 +8,18 @@ macro PGroup(expr)
spec = modp_spec(name)
group = concretize_type(PGroup, spec; name)
return group

else
# Two-argument case: @PGroup{p=23, q=11}
# Two-argument case: @PGroup{p=23, q=11} or @PGroup{p=my_p, q=my_q}
p = q = nothing
for arg in expr.args
if arg isa Expr && arg.head == :(=)
if arg.args[1] == :p
p = arg.args[2]
elseif arg.args[1] == :q
q = arg.args[2]
lhs = arg.args[1]
rhs = arg.args[2]
if lhs == :p
p = rhs
elseif lhs == :q
q = rhs
end
end
end
Expand All @@ -27,16 +29,22 @@ macro PGroup(expr)
error("Both p and q must be specified in @PGroup{p=..., q=...}")
end

spec = MODP(p; q)
group = concretize_type(PGroup, spec)
return group
# Properly escape both p and q values
return quote
local p_val = $(esc(p))
local q_val = $(esc(q))
local spec = MODP(p_val; q=q_val)
concretize_type(
PGroup,
spec
)
end
end
else
error("Invalid syntax. Use @PGroup{p=..., q=...} or @PGroup{some_name}")
end
end


Base.show(io::IO, ::Type{PGroup}) = print(io, "PGroup")

function Base.show(io::IO, ::Type{G}) where G <: PGroup
Expand Down Expand Up @@ -66,20 +74,51 @@ end


macro ECGroup(expr)
if expr.head == :braces && length(expr.args) == 1 && !(expr.args[1] isa Expr)
# Single argument case: @PGroup{some_name}
some_name = expr.args[1]

# If the curve can't be found error here
spec = curve(some_name)
group = concretize_type(ECGroup, spec)
if expr.head == :braces && length(expr.args) == 1
arg = expr.args[1]
point_expr = Expr(:macrocall, Symbol("@ECPoint"), LineNumberNode(@__LINE__),
Expr(:braces, arg))
# Use __module__ to get the ECGroup type from the defining module
return :(ECGroup{$(esc(point_expr))})
else
error("Invalid syntax. Use @ECGroup{curve_name} or @ECGroup{Module.curve_name}")
end
end

return group
# First, let's modify @ECPoint to ensure it handles symbol quoting correctly
macro ECPoint(expr)
if expr.head == :braces && length(expr.args) == 1
arg = expr.args[1]

# Handle module-qualified names (e.g., OpenSSLGroups.SecP256k1)
if arg isa Expr && arg.head == :.
return quote
local P = $(esc(arg))
concretize_type(ECPoint{P}, order(P), cofactor(P); name = nameof(P))
end
# Handle simple symbols
elseif arg isa Symbol
# Important: Use QuoteNode here for the isdefined check
return quote
if isdefined($(__module__), $(QuoteNode(arg)))
# If defined, use the escaped symbol to access its value
local P = $(esc(arg))
concretize_type(ECPoint{P}, order(P), cofactor(P); name = nameof(P))
else
# If not defined, treat it as a curve name
local spec = curve($(QuoteNode(arg)))
concretize_type(ECPoint, spec)
end
end
else
error("Invalid syntax. Use @ECPoint{curve_name} or @ECPoint{Module.curve_name}")
end
else
error("Invalid syntax. Use @ECGroup{curve_name}")
error("Invalid syntax. Use @ECPoint{curve_name} or @ECPoint{Module.curve_name}")
end
end


function Base.show(io::IO, g::G) where G <: ECGroup
show(io, G)
print(io, "(")
Expand All @@ -101,23 +140,6 @@ function Base.show(io::IO, ::Type{G}) where G <: ECGroup
end
end


macro ECPoint(expr)
if expr.head == :braces && length(expr.args) == 1 && !(expr.args[1] isa Expr)
# Single argument case: @PGroup{some_name}
some_name = expr.args[1]

spec = curve(some_name)
# If the curve can't be found error here
_curve = concretize_type(ECPoint, spec)

return _curve
else
error("Invalid syntax. Use @ECPoint{curve_name}")
end
end


### May need to do epoint seperatelly
function Base.show(io::IO, ::Type{P}) where P <: ECPoint
if @isdefined P
Expand All @@ -131,7 +153,6 @@ function Base.show(io::IO, ::Type{P}) where P <: ECPoint
end
end


function Base.show(io::IO, p::P) where P <: ECPoint
show(io, P)
print(io, "(")
Expand All @@ -144,6 +165,3 @@ end
function Base.display(::Type{P}) where P <: ECPoint
show(P)
end



2 changes: 1 addition & 1 deletion src/spec.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -158,5 +158,5 @@ spec(g::ECGroup) = spec(g.x)
spec(::Type{G}) where G <: PGroup = MODP(; p = modulus(G), q = order(G))

(::Type{P})() where P <: ECPoint = P(generator(curve(name(P))))
(::Type{G})() where G <: ECGroup = G(generator(curve(name(G))))
(::Type{ECGroup{P}})() where P <: ECPoint = ECGroup{P}(P())
(::Type{G})() where G <: PGroup = G(generator(modp_spec(name(G))))

2 comments on commit 913e48e

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Registration pull request created: JuliaRegistries/General/118412

Tip: Release Notes

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"Release notes:" and it will be added to the registry PR, and if TagBot is installed it will also be added to the
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Release notes:

## Breaking changes

- blah

To add them here just re-invoke and the PR will be updated.

Tagging

After the above pull request is merged, it is recommended that a tag is created on this repository for the registered package version.

This will be done automatically if the Julia TagBot GitHub Action is installed, or can be done manually through the github interface, or via:

git tag -a v0.5.1 -m "<description of version>" 913e48e9b74141279c3c4be25327625ce11b3267
git push origin v0.5.1

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