From: bors <bors@rust-lang.org>
Date: Wed, 11 Jan 2017 01:33:03 +0000 (+0000)
Subject: Auto merge of #38960 - arielb1:blake-endian, r=michaelwoerister
X-Git-Url: https://git.lizzy.rs/?a=commitdiff_plain;h=e4fee525e04838dabc82beed5ae1a06051be53fd;p=rust.git

Auto merge of #38960 - arielb1:blake-endian, r=michaelwoerister

Use little-endian encoding for Blake2 hashing on all architectures

Like many hash functions, the blake2 hash is mathematically defined on
a sequence of 64-bit words. As Rust's hash interface operates on
sequences of octets, some encoding must be used to bridge that
difference.

The Blake2 RFC (RFC 7693) specifies that:
```
   Byte (octet) streams are interpreted as words in little-endian order,
   with the least-significant byte first.
```

So use that encoding consistently.

Fixes #38891.

Beta-nominating since this is a regression since 1.15.

r? @michaelwoerister
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e4fee525e04838dabc82beed5ae1a06051be53fd