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-rw-r--r--src/shared/gcrypt-util.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/src/shared/gcrypt-util.c b/src/shared/gcrypt-util.c
index 3bbc161ef2..b887243849 100644
--- a/src/shared/gcrypt-util.c
+++ b/src/shared/gcrypt-util.c
@@ -38,3 +38,32 @@ void initialize_libgcrypt(bool secmem) {
gcry_control(GCRYCTL_DISABLE_SECMEM);
gcry_control(GCRYCTL_INITIALIZATION_FINISHED, 0);
}
+
+int string_hashsum(const char *s, size_t len, int md_algorithm, char **out) {
+ gcry_md_hd_t md = NULL;
+ size_t hash_size;
+ void *hash;
+ char *enc;
+
+ initialize_libgcrypt(false);
+
+ hash_size = gcry_md_get_algo_dlen(md_algorithm);
+ assert(hash_size > 0);
+
+ gcry_md_open(&md, md_algorithm, 0);
+ if (!md)
+ return -EIO;
+
+ gcry_md_write(md, s, len);
+
+ hash = gcry_md_read(md, 0);
+ if (!hash)
+ return -EIO;
+
+ enc = hexmem(hash, hash_size);
+ if (!enc)
+ return -ENOMEM;
+
+ *out = enc;
+ return 0;
+}