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Procedural macro for fixed-exponent variable-base modular exponentiation

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Uses the addchain crate to obtain an addition chain for the exponent,
and then generates the corresponding constant-time square-and-multiply
algorithm.
This commit is contained in:
Jack Grigg
2019-12-19 22:10:10 -06:00
parent 2df2a2b2f2
commit 232fb4b7a3
4 changed files with 75 additions and 1 deletions
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12
Cargo.lock generated
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@@ -1,5 +1,15 @@
# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
[[package]]
name = "addchain"
version = "0.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"num-bigint 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
"num-integer 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)",
"num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "aes"
version = "0.3.2"
@@ -467,6 +477,7 @@ dependencies = [
name = "ff_derive"
version = "0.6.0"
dependencies = [
"addchain 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
"num-bigint 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
"num-integer 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)",
"num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1298,6 +1309,7 @@ dependencies = [
]
[metadata]
"checksum addchain 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1177222c93a7bb492002e9a3cd947c7fd869e085d6e81a9e415ff1be65b3489c"
"checksum aes 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "54eb1d8fe354e5fc611daf4f2ea97dd45a765f4f1e4512306ec183ae2e8f20c9"
"checksum aes-soft 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "cfd7e7ae3f9a1fb5c03b389fc6bb9a51400d0c13053f0dca698c832bfd893a0d"
"checksum aesni 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2f70a6b5f971e473091ab7cfb5ffac6cde81666c4556751d8d5620ead8abf100"