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removed unsafe

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This commit is contained in:
Shimun 2019-12-26 18:02:20 +01:00
parent 8234975ba3
commit b92428214a
Signed by: shimun
GPG Key ID: E81D8382DC2F971B
1 changed files with 8 additions and 6 deletions
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14
src/extensions/hmac.rs
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@ -185,16 +185,18 @@ impl HmacExtension for FidoDevice {
}),
_ => Err(FidoErrorKind::CborDecode),
}?;
let mut hmac_secret = ([0u8; 32], [0u8; 32]);
let mut hmac_secret = [0u8; 64];
decryptor
.decrypt(
&mut RefReadBuffer::new(&hmac_secret_enc),
&mut RefWriteBuffer::new(unsafe {
std::mem::transmute::<_, &mut [u8; 64]>(&mut hmac_secret)
}),
&mut RefWriteBuffer::new(&mut hmac_secret),
true,
)
.expect("failed to decrypt secret");
Ok((hmac_secret.0, salt2.map(|_| hmac_secret.1)))
.map_err(|_| FidoErrorKind::ReadPacket)?;
let mut hmac_secret_0 = [0u8; 32];
let mut hmac_secret_1 = [0u8; 32];
hmac_secret_0.copy_from_slice(&hmac_secret[0..32]);
hmac_secret_1.copy_from_slice(&hmac_secret[32..]);
Ok((hmac_secret_0, salt2.map(|_| hmac_secret_1)))
}
}