* [PATCH] checksum: add l_checksum_digest_length
@ 2019-01-15 22:38 James Prestwood
2019-01-16 16:33 ` Denis Kenzior
0 siblings, 1 reply; 2+ messages in thread
From: James Prestwood @ 2019-01-15 22:38 UTC (permalink / raw)
To: ell
[-- Attachment #1: Type: text/plain, Size: 1674 bytes --]
IWD needs the ability to get the digest length for a given checksum.
This was trivial to do in IWD, but since the we already have the
digest length in ELL its more fitting to add a proper ELL API.
---
ell/checksum.c | 17 +++++++++++++++++
ell/checksum.h | 2 ++
ell/ell.sym | 1 +
3 files changed, 20 insertions(+)
diff --git a/ell/checksum.c b/ell/checksum.c
index 56b337c..0bb16fd 100644
--- a/ell/checksum.c
+++ b/ell/checksum.c
@@ -510,3 +510,20 @@ LIB_EXPORT bool l_checksum_cmac_aes_supported()
return is_supported("cmac(aes)");
}
+
+LIB_EXPORT ssize_t l_checksum_digest_length(enum l_checksum_type type)
+{
+ const char *name;
+ int i;
+
+ name = checksum_type_to_name(type);
+ if (!name)
+ return -EINVAL;
+
+ for (i = 0; checksum_info_table[i].name; i++) {
+ if (!strcmp(checksum_info_table[i].name, name))
+ return checksum_info_table[i].digest_len;
+ }
+
+ return 0;
+}
diff --git a/ell/checksum.h b/ell/checksum.h
index 05927b6..08d74b7 100644
--- a/ell/checksum.h
+++ b/ell/checksum.h
@@ -66,6 +66,8 @@ char *l_checksum_get_string(struct l_checksum *checksum);
bool l_checksum_is_supported(enum l_checksum_type type, bool check_hmac);
bool l_checksum_cmac_aes_supported();
+ssize_t l_checksum_digest_length(enum l_checksum_type type);
+
#ifdef __cplusplus
}
#endif
diff --git a/ell/ell.sym b/ell/ell.sym
index 4a806aa..203a291 100644
--- a/ell/ell.sym
+++ b/ell/ell.sym
@@ -115,6 +115,7 @@ global:
l_checksum_get_string;
l_checksum_is_supported;
l_checksum_cmac_aes_supported;
+ l_checksum_digest_length;
/* cipher */
l_cipher_new;
l_aead_cipher_new;
--
2.17.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] checksum: add l_checksum_digest_length
2019-01-15 22:38 [PATCH] checksum: add l_checksum_digest_length James Prestwood
@ 2019-01-16 16:33 ` Denis Kenzior
0 siblings, 0 replies; 2+ messages in thread
From: Denis Kenzior @ 2019-01-16 16:33 UTC (permalink / raw)
To: ell
[-- Attachment #1: Type: text/plain, Size: 453 bytes --]
Hi James,
On 01/15/2019 04:38 PM, James Prestwood wrote:
> IWD needs the ability to get the digest length for a given checksum.
> This was trivial to do in IWD, but since the we already have the
> digest length in ELL its more fitting to add a proper ELL API.
> ---
> ell/checksum.c | 17 +++++++++++++++++
> ell/checksum.h | 2 ++
> ell/ell.sym | 1 +
> 3 files changed, 20 insertions(+)
Applied, thanks.
Regards,
-Denis
^ permalink raw reply [flat|nested] 2+ messages in thread
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2019-01-15 22:38 [PATCH] checksum: add l_checksum_digest_length James Prestwood
2019-01-16 16:33 ` Denis Kenzior
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