gnu: Add rust-aes-ctr-0.6.

* gnu/packages/crates-io.scm (rust-aes-ctr-0.6): New variable.

Signed-off-by: Efraim Flashner <efraim@flashner.co.il>

gnu/packages/crates-io.scm

@@ -2219,6 +2219,32 @@ ciphers implementations.")
         ("rust-aesni" ,rust-aesni-0.6)
         ("rust-block-cipher-trait" ,rust-block-cipher-trait-0.6))))))
 
+(define-public rust-aes-ctr-0.6
+  (package
+    (name "rust-aes-ctr")
+    (version "0.6.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "aes-ctr" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "0qspjxzrclnb83501595y01dhc0km1ssrbjnwlxhcrsdwp6w6abp"))))
+    (build-system cargo-build-system)
+    (arguments
+     (list #:cargo-inputs
+           `(("rust-aesni" ,rust-aesni-0.10)
+             ("rust-aes-soft" ,rust-aes-soft-0.6)
+             ("rust-cipher" ,rust-cipher-0.2)
+             ("rust-ctr" ,rust-ctr-0.6))
+      #:cargo-development-inputs `(("rust-cipher" ,rust-cipher-0.2))))
+    (home-page "https://github.com/RustCrypto/block-ciphers/tree/master/aes")
+    (synopsis "Pure Rust implementation of AES")
+    (description
+     "A pure Rust implementation of the @acronym{AES, Advanced Encryption
+Standard}.  Use the AES crate if possible, as the aes-ctr has been into it.")
+    (license (list license:expat license:asl2.0))))
+
 (define-public rust-aes-gcm-0.10
   (package
     (name "rust-aes-gcm")