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https://github.com/status-im/constantine.git
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2613356281
* Add MultiScalar recoding from "Efficient and Secure Algorithms for GLV-Based Scalar Multiplication" by Faz et al * precompute cube root of unity - Add VM precomputation of Fp - workaround upstream bug https://github.com/nim-lang/Nim/issues/14585 * Add the φ-accelerated lookup table builder * Add a dedicated bithacks file * cosmetic import consistency * Build the φ precompute table with n-1 EC additions instead of 2^(n-1) additions * remove binary * Add the GLV precomputations to the sage scripts * You can't avoid it, bigint multiplication is needed at one point * Add bigint multiplication discarding some low words * Implement the lattice decomposition in sage * Proper decomposition for BN254 * Prepare the code for a new scalar mul * We compile, and now debugging hunt * More helpers to debug GLV scalar Mul * Fix conditional negation * Endomorphism accelerated scalar mul working for BN254 curve * Implement endomorphism acceleration for BLS12-381 (needed cofactor clearing of the point) * fix nimble test script after bench rename
43 lines
1.2 KiB
Nim
43 lines
1.2 KiB
Nim
import std/macros
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proc replaceNodes(ast: NimNode, what: NimNode, by: NimNode): NimNode =
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# Replace "what" ident node by "by"
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proc inspect(node: NimNode): NimNode =
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case node.kind:
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of {nnkIdent, nnkSym}:
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if node.eqIdent(what):
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return by
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return node
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of nnkEmpty:
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return node
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of nnkLiterals:
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return node
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else:
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var rTree = node.kind.newTree()
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for child in node:
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rTree.add inspect(child)
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return rTree
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result = inspect(ast)
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macro staticFor*(idx: untyped{nkIdent}, start, stopEx: static int, body: untyped): untyped =
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result = newStmtList()
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for i in start ..< stopEx:
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result.add nnkBlockStmt.newTree(
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ident("unrolledIter_" & $idx & $i),
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body.replaceNodes(idx, newLit i)
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)
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{.experimental: "dynamicBindSym".}
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macro staticFor*(ident: untyped{nkIdent}, choices: typed, body: untyped): untyped =
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## matches
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## staticFor(curve, TestCurves):
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## body
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## and unroll the body for each curve in TestCurves
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result = newStmtList()
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for choice in choices:
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result.add nnkBlockStmt.newTree(
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ident($ident & "_" & $choice.intVal),
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body.replaceNodes(ident, choice)
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)
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