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authorLudovic Courtès <ludo@gnu.org>2018-03-08 11:47:28 +0100
committerLudovic Courtès <ludo@gnu.org>2018-03-08 11:56:20 +0100
commit33286075b9c2ecd27607b5674c68909dd528473a (patch)
treebd438924700e215fe9cba3d1168dba6e6dfad597
parent3aab8851442713f6ad748ffebb055c5e9eae1bd4 (diff)
hash: Add 'sha1'.
* guix/hash.scm (GCRY_MD_SHA1): New macro. (bytevector-hash): New procedure. (sha256): Express in terms of 'bytevector-hash'. (sha1): New procedure. * tests/hash.scm ("sha1, empty", "sha1, hello"): New tests.
-rw-r--r--guix/hash.scm23
-rw-r--r--tests/hash.scm8
2 files changed, 25 insertions, 6 deletions
diff --git a/guix/hash.scm b/guix/hash.scm
index 773b9d4777..39834043e1 100644
--- a/guix/hash.scm
+++ b/guix/hash.scm
@@ -23,7 +23,9 @@
#:use-module (system foreign)
#:use-module ((guix build utils) #:select (dump-port))
#:use-module (srfi srfi-11)
- #:export (sha256
+ #:use-module (srfi srfi-26)
+ #:export (sha1
+ sha256
open-sha256-port
port-sha256
file-sha256
@@ -44,17 +46,26 @@
;; Value as of Libgcrypt 1.5.2.
(identifier-syntax 8))
-(define sha256
+(define-syntax GCRY_MD_SHA1
+ (identifier-syntax 2))
+
+(define bytevector-hash
(let ((hash (pointer->procedure void
(libgcrypt-func "gcry_md_hash_buffer")
`(,int * * ,size_t))))
- (lambda (bv)
- "Return the SHA256 of BV as a bytevector."
- (let ((digest (make-bytevector (/ 256 8))))
- (hash GCRY_MD_SHA256 (bytevector->pointer digest)
+ (lambda (bv type size)
+ "Return the hash TYPE, of SIZE bytes, of BV as a bytevector."
+ (let ((digest (make-bytevector size)))
+ (hash type (bytevector->pointer digest)
(bytevector->pointer bv) (bytevector-length bv))
digest))))
+(define sha1
+ (cut bytevector-hash <> GCRY_MD_SHA1 20))
+
+(define sha256
+ (cut bytevector-hash <> GCRY_MD_SHA256 (/ 256 8)))
+
(define open-sha256-md
(let ((open (pointer->procedure int
(libgcrypt-func "gcry_md_open")
diff --git a/tests/hash.scm b/tests/hash.scm
index b4cf2b61d6..da87616eec 100644
--- a/tests/hash.scm
+++ b/tests/hash.scm
@@ -40,6 +40,14 @@
(test-begin "hash")
+(test-equal "sha1, empty"
+ (base16-string->bytevector "da39a3ee5e6b4b0d3255bfef95601890afd80709")
+ (sha1 #vu8()))
+
+(test-equal "sha1, hello"
+ (base16-string->bytevector "2aae6c35c94fcfb415dbe95f408b9ce91ee846ed")
+ (sha1 (string->utf8 "hello world")))
+
(test-equal "sha256, empty"
%empty-sha256
(sha256 #vu8()))