daemon: Simplify interface with 'guix authenticate'.

There's no reason at this point to mimic the calling convention of the
'openssl' command.

* nix/libstore/local-store.cc (LocalStore::exportPath): Add only "sign"
and HASH to ARGS.  Remove 'tmpDir' and 'hashFile'.
(LocalStore::importPath): Add only "verify" and SIGNATURE to
* guix/scripts/authenticate.scm (guix-authenticate): Adjust
accordingly; remove the OpenSSL-style clauses.
(read-hash-data): Remove.
(sign-with-key): Replace 'port' with 'sha256' and adjust accordingly.
(validate-signature): Export SIGNATURE to be a canonical sexp.
* tests/guix-authenticate.sh: Adjust tests accordingly.

1 files changed, 15 insertions, 39 deletions

diff --git a/tests/guix-authenticate.sh b/tests/guix-authenticate.sh
index 72c3d161d7..773443453d 100644
--- a/tests/guix-authenticate.sh
+++ b/tests/guix-authenticate.sh
@@ -1,5 +1,5 @@
 # GNU Guix --- Functional package management for GNU
-# Copyright © 2013, 2014 Ludovic Courtès <ludo@gnu.org>
+# Copyright © 2013, 2014, 2020 Ludovic Courtès <ludo@gnu.org>
 #
 # This file is part of GNU Guix.
 #
@@ -29,34 +29,18 @@ rm -f "$sig" "$hash"
 trap 'rm -f "$sig" "$hash"' EXIT
 
 # A hexadecimal string as long as a sha256 hash.
-echo "2749f0ea9f26c6c7be746a9cff8fa4c2f2a02b000070dba78429e9a11f87c6eb" \
-    > "$hash"
+hash="2749f0ea9f26c6c7be746a9cff8fa4c2f2a02b000070dba78429e9a11f87c6eb"
 
-guix authenticate rsautl -sign				\
-    -inkey "$abs_top_srcdir/tests/signing-key.sec"	\
-    -in "$hash" > "$sig"
+guix authenticate sign				\
+    "$abs_top_srcdir/tests/signing-key.sec"	\
+    "$hash" > "$sig"
 test -f "$sig"
 
-hash2="`guix authenticate rsautl -verify		\
-          -inkey $abs_top_srcdir/tests/signing-key.pub	\
-          -pubin -in $sig`"
-test "$hash2" = `cat "$hash"`
-
-# Same thing in a pipeline, using the command line syntax that Nix/Crypto.pm
-# uses.
-hash2="`						\
-  cat "$hash"						\
-  | guix authenticate rsautl -sign			\
-    -inkey "$abs_top_srcdir/tests/signing-key.sec"	\
-  | guix authenticate rsautl -verify			\
-          -inkey $abs_top_srcdir/tests/signing-key.pub	\
-          -pubin`"
-test "$hash2" = `cat "$hash"`
+hash2="`guix authenticate verify "$sig"`"
+test "$hash2" = "$hash"
 
 # Detect corrupt signatures.
-if guix authenticate rsautl -verify				\
-          -inkey "$abs_top_srcdir/tests/signing-key.pub"	\
-          -pubin -in /dev/null
+if guix authenticate verify /dev/null
 then false
 else true
 fi
@@ -66,9 +50,7 @@ fi
 # modifying this hash.
 sed -i "$sig"											\
     -e's|#[A-Z0-9]\{64\}#|#0000000000000000000000000000000000000000000000000000000000000000#|g'
-if guix authenticate rsautl -verify				\
-          -inkey "$abs_top_srcdir/tests/signing-key.pub"	\
-          -pubin -in "$sig"
+if guix authenticate verify "$sig"
 then false
 else true
 fi
@@ -76,20 +58,14 @@ fi
 
 # Test for <http://bugs.gnu.org/17312>: make sure 'guix authenticate' produces
 # valid signatures when run in the C locale.
-echo "5eff0b55c9c5f5e87b4e34cd60a2d5654ca1eb78c7b3c67c3179fed1cff07b4c" \
-    > "$hash"
+hash="5eff0b55c9c5f5e87b4e34cd60a2d5654ca1eb78c7b3c67c3179fed1cff07b4c"
 
 LC_ALL=C
 export LC_ALL
 
-guix authenticate rsautl -sign				\
-    -inkey "$abs_top_srcdir/tests/signing-key.sec"	\
-    -in "$hash" > "$sig"
+guix authenticate sign "$abs_top_srcdir/tests/signing-key.sec" "$hash" \
+     > "$sig"
 
-guix authenticate rsautl -verify			\
-        -inkey "$abs_top_srcdir/tests/signing-key.pub"	\
-        -pubin -in "$sig"
-hash2="`guix authenticate rsautl -verify		\
-          -inkey $abs_top_srcdir/tests/signing-key.pub	\
-          -pubin -in $sig`"
-test "$hash2" = `cat "$hash"`
+guix authenticate verify "$sig"
+hash2="`guix authenticate verify "$sig"`"
+test "$hash2" = "$hash"