gnu: Add rust-cipher-0.2.

* gnu/packages/crates-io.scm (rust-cipher-0.2): New variable.

gnu/packages/crates-io.scm

@@ -5543,6 +5543,32 @@ chain, the first matching branch is the item that gets emitted.")
     (description "This package provides Rust bindings for libclang.")
     (license license:asl2.0)))
 
+(define-public rust-cipher-0.2
+  (package
+    (name "rust-cipher")
+    (version "0.2.5")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "cipher" version))
+        (file-name
+          (string-append name "-" version ".tar.gz"))
+        (sha256
+          (base32 "00b8imbmdg7zdrbaczlivmdfdy09xldg95wl4iijl15xgjcfgy0j"))))
+    (build-system cargo-build-system)
+    (arguments
+      `(#:skip-build? #t
+        #:cargo-inputs
+        (("rust-blobby" ,rust-blobby-0.3)
+         ("rust-generic-array" ,rust-generic-array-0.14))))
+    (home-page "https://docs.rs/cipher/")
+    (synopsis "Traits for describing block ciphers and stream ciphers")
+    (description "This package provides traits which define the functionality
+of block ciphers and stream ciphers.  See RustCrypto/block-ciphers and
+RustCrypto/stream-ciphers for algorithm implementations which use these
+traits.")
+    (license (list license:expat license:asl2.0))))
+
 (define-public rust-clang-sys-0.29
   (package
     (inherit rust-clang-sys-1)