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use hardware AES & SHA intrinsics on ARMv8 #185

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2 changes: 1 addition & 1 deletion Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -36,7 +36,7 @@ aes = { version = "0.8.4", optional = true }
ctr = { version = "0.9.2", optional = true }
crypto-mac = { version = "0.11.1", optional = true }
hmac = { version = "0.11.0", optional = true }
sha2 = { version = "0.9.5", optional = true }
sha2 = { version = "0.9.5", optional = true, features = ["asm"] }
hkdf = { version = "0.11.0", optional = true }
pbkdf2 = { version = "0.8.0", optional = true }
rand = { version = "0.8.5", optional = true }
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10 changes: 10 additions & 0 deletions README.md
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Expand Up @@ -15,6 +15,16 @@ Its main use is to be used as a full text search backend for Matrix clients.
Seshat provides JavaScript bindings which can be found in the
[seshat-node](seshat-node) subdir.

### Building the native module (with hardware crypto)

```sh
cd seshat-node

# N.B. aarch64 requires you to explicitly enable hardware AES via RUSTFLAGS
# otherwise seshat uses 10-20x more CPU than it should.
RUSTFLAGS="--cfg aes_armv8" npm run build-bundled
```

## Usage

There are two modes of operation for Seshat, adding live events as they
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