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-rw-r--r--guix/utils.scm15
1 files changed, 14 insertions, 1 deletions
diff --git a/guix/utils.scm b/guix/utils.scm
index 69abcb4b55..db37d432e8 100644
--- a/guix/utils.scm
+++ b/guix/utils.scm
@@ -19,9 +19,13 @@
(define-module (guix utils)
#:use-module (srfi srfi-60)
#:use-module (rnrs bytevectors)
+ #:use-module ((chop hash)
+ #:select (bytevector-hash
+ hash-method/sha256))
#:export (bytevector-quintet-length
bytevector->base32-string
- bytevector->nix-base32-string))
+ bytevector->nix-base32-string
+ sha256))
(define bytevector-quintet-ref
(let* ((ref bytevector-u8-ref)
@@ -98,3 +102,12 @@ the previous application or INIT."
(define bytevector->nix-base32-string
(make-bytevector->base32-string %nix-base32-chars))
+
+;;;
+;;; Hash.
+;;;
+
+(define (sha256 bv)
+ "Return the SHA256 of BV as a bytevector."
+ (bytevector-hash hash-method/sha256 bv))
+