Merge pull request #41467 from thaJeztah/bump_go_digest

vendor: opencontainers/go-digest v1.0.0

vendor.conf

@@ -71,8 +71,8 @@ go.etcd.io/bbolt                                    232d8fc87f50244f9c808f474575
 
 # get graph and distribution packages
 github.com/docker/distribution                      0d3efadf0154c2b8a4e7b6621fff9809655cc580
-github.com/vbatts/tar-split                         620714a4c508c880ac1bdda9c8370a2b19af1a55 # v0.11.0
+github.com/vbatts/tar-split                         620714a4c508c880ac1bdda9c8370a2b19af1a55 # v0.11.1
-github.com/opencontainers/go-digest                 279bed98673dd5bef374d3b6e4b09e2af76183bf # v1.0.0-rc1
+github.com/opencontainers/go-digest                 ea51bea511f75cfa3ef6098cc253c5c3609b037a # v1.0.0
 
 # get go-zfs packages
 github.com/mistifyio/go-zfs                         f784269be439d704d3dfa1906f45dd848fed2beb

vendor/github.com/opencontainers/go-digest/LICENSE

@@ -176,6 +176,7 @@
 
    END OF TERMS AND CONDITIONS
 
+   Copyright 2019, 2020 OCI Contributors
    Copyright 2016 Docker, Inc.
 
    Licensed under the Apache License, Version 2.0 (the "License");

vendor/github.com/opencontainers/go-digest/README.md

@@ -8,20 +8,16 @@ Please see the [godoc](https://godoc.org/github.com/opencontainers/go-digest) fo
 
 # What is a digest?
 
-A digest is just a hash.
+A digest is just a [hash](https://en.wikipedia.org/wiki/Hash_function).
 
-The most common use case for a digest is to create a content
+The most common use case for a digest is to create a content identifier for use in [Content Addressable Storage](https://en.wikipedia.org/wiki/Content-addressable_storage) systems:
-identifier for use in [Content Addressable Storage](https://en.wikipedia.org/wiki/Content-addressable_storage)
-systems:
 
 ```go
 id := digest.FromBytes([]byte("my content"))
 ```
 
-In the example above, the id can be used to uniquely identify 
+In the example above, the id can be used to uniquely identify the byte slice "my content".
-the byte slice "my content". This allows two disparate applications
+This allows two disparate applications to agree on a verifiable identifier without having to trust one another.
-to agree on a verifiable identifier without having to trust one
-another.
 
 An identifying digest can be verified, as follows:
 
@@ -31,8 +27,7 @@ if id != digest.FromBytes([]byte("my content")) {
 }
 ```
 
-A `Verifier` type can be used to handle cases where an `io.Reader`
+A `Verifier` type can be used to handle cases where an `io.Reader` makes more sense:
-makes more sense:
 
 ```go
 rd := getContent()
@@ -44,33 +39,28 @@ if !verifier.Verified() {
 }
 ```
 
-Using [Merkle DAGs](https://en.wikipedia.org/wiki/Merkle_tree), this
+Using [Merkle DAGs](https://en.wikipedia.org/wiki/Merkle_tree), this can power a rich, safe, content distribution system.
-can power a rich, safe, content distribution system.
 
 # Usage
 
-While the [godoc](https://godoc.org/github.com/opencontainers/go-digest) is
+While the [godoc](https://godoc.org/github.com/opencontainers/go-digest) is considered the best resource, a few important items need to be called out when using this package.
-considered the best resource, a few important items need to be called 
-out when using this package.
 
-1. Make sure to import the hash implementations into your application
+1. Make sure to import the hash implementations into your application or the package will panic.
-    or the package will panic. You should have something like the 
+    You should have something like the following in the main (or other entrypoint) of your application:
-    following in the main (or other entrypoint) of your application:
    
     ```go
     import (
         _ "crypto/sha256"
-   	    _ "crypto/sha512"
+        _ "crypto/sha512"
     )
     ```
     This may seem inconvenient but it allows you replace the hash 
     implementations with others, such as https://github.com/stevvooe/resumable.
  
-2. Even though `digest.Digest` may be assemable as a string, _always_ 
+2. Even though `digest.Digest` may be assemblable as a string, _always_ verify your input with `digest.Parse` or use `Digest.Validate` when accepting untrusted input.
-    verify your input with `digest.Parse` or use `Digest.Validate`
+    While there are measures to avoid common problems, this will ensure you have valid digests in the rest of your application.
-    when accepting untrusted input. While there are measures to 
+
-    avoid common problems, this will ensure you have valid digests
+3. While alternative encodings of hash values (digests) are possible (for example, base64), this package deals exclusively with hex-encoded digests.
-    in the rest of your application.
 
 # Stability
 
@@ -80,25 +70,27 @@ As always, before using a package export, read the [godoc](https://godoc.org/git
 
 # Contributing
 
-This package is considered fairly complete. It has been in production
+This package is considered fairly complete.
-in thousands (millions?) of deployments and is fairly battle-hardened.
+It has been in production in thousands (millions?) of deployments and is fairly battle-hardened.
-New additions will be met with skepticism. If you think there is a 
+New additions will be met with skepticism.
-missing feature, please file a bug clearly describing the problem and 
+If you think there is a missing feature, please file a bug clearly describing the problem and the alternatives you tried before submitting a PR.
-the alternatives you tried before submitting a PR.
 
-# Reporting security issues
+## Code of Conduct
 
-Please DO NOT file a public issue, instead send your report privately to
+Participation in the OpenContainers community is governed by [OpenContainer's Code of Conduct][code-of-conduct].
-security@opencontainers.org.
 
-The maintainers take security seriously. If you discover a security issue,
+## Security
-please bring it to their attention right away!
 
-If you are reporting a security issue, do not create an issue or file a pull
+If you find an issue, please follow the [security][security] protocol to report it.
-request on GitHub. Instead, disclose the issue responsibly by sending an email
-to security@opencontainers.org (which is inhabited only by the maintainers of
-the various OCI projects).
 
 # Copyright and license
 
-Copyright © 2016 Docker, Inc. All rights reserved, except as follows. Code is released under the [Apache 2.0 license](LICENSE.code). This `README.md` file and the [`CONTRIBUTING.md`](CONTRIBUTING.md) file are licensed under the Creative Commons Attribution 4.0 International License under the terms and conditions set forth in the file [`LICENSE.docs`](LICENSE.docs). You may obtain a duplicate copy of the same license, titled CC BY-SA 4.0, at http://creativecommons.org/licenses/by-sa/4.0/.
+Copyright © 2019, 2020 OCI Contributors
+Copyright © 2016 Docker, Inc.
+All rights reserved, except as follows.
+Code is released under the [Apache 2.0 license](LICENSE).
+This `README.md` file and the [`CONTRIBUTING.md`](CONTRIBUTING.md) file are licensed under the Creative Commons Attribution 4.0 International License under the terms and conditions set forth in the file [`LICENSE.docs`](LICENSE.docs).
+You may obtain a duplicate copy of the same license, titled CC BY-SA 4.0, at http://creativecommons.org/licenses/by-sa/4.0/.
+
+[security]: https://github.com/opencontainers/org/blob/master/security
+[code-of-conduct]: https://github.com/opencontainers/org/blob/master/CODE_OF_CONDUCT.md

vendor/github.com/opencontainers/go-digest/algorithm.go

@@ -1,3 +1,4 @@
+// Copyright 2019, 2020 OCI Contributors
 // Copyright 2017 Docker, Inc.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");

vendor/github.com/opencontainers/go-digest/digest.go

@@ -1,3 +1,4 @@
+// Copyright 2019, 2020 OCI Contributors
 // Copyright 2017 Docker, Inc.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");

vendor/github.com/opencontainers/go-digest/digester.go

@@ -1,3 +1,4 @@
+// Copyright 2019, 2020 OCI Contributors
 // Copyright 2017 Docker, Inc.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");

vendor/github.com/opencontainers/go-digest/doc.go

@@ -1,3 +1,4 @@
+// Copyright 2019, 2020 OCI Contributors
 // Copyright 2017 Docker, Inc.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
@@ -29,8 +30,13 @@
 //
 // 	sha256:7173b809ca12ec5dee4506cd86be934c4596dd234ee82c0662eac04a8c2c71dc
 //
-// In this case, the string "sha256" is the algorithm and the hex bytes are
+// The "algorithm" portion defines both the hashing algorithm used to calculate
-// the "digest".
+// the digest and the encoding of the resulting digest, which defaults to "hex"
+// if not otherwise specified. Currently, all supported algorithms have their
+// digests encoded in hex strings.
+//
+// In the example above, the string "sha256" is the algorithm and the hex bytes
+// are the "digest".
 //
 // Because the Digest type is simply a string, once a valid Digest is
 // obtained, comparisons are cheap, quick and simple to express with the

vendor/github.com/opencontainers/go-digest/go.mod

@@ -0,0 +1,3 @@
+module github.com/opencontainers/go-digest
+
+go 1.13

vendor/github.com/opencontainers/go-digest/verifiers.go

@@ -1,3 +1,4 @@
+// Copyright 2019, 2020 OCI Contributors
 // Copyright 2017 Docker, Inc.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");