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ima-evm-utils: try to load digest by its alias

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Primary names of the algorithms are different for OpenSSL and Kernel.
"Streebog" is a name of the hash algorithm in the Kernel Crypto API.
"md_gost12_X" is the name used by most versions of OpenSSL, it's
placed in pkey_hash_algo[] so that algo IDs are resolved to them.
Allow to use both names.

Signed-off-by: Vitaly Chikunov <vt@altlinux.org>
[zohar@linux.ibm.com: updated patch description based input from Vitaly]
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
This commit is contained in:
Vitaly Chikunov 2019-03-23 04:41:52 +03:00 committed by Mimi Zohar
parent b628d8bfdb
commit ebbfc41ad6
1 changed files with 12 additions and 0 deletions
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12
src/libimaevm.c
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@ -61,6 +61,7 @@
#include "imaevm.h"
#include "hash_info.h"
/* Names that are primary for OpenSSL. */
const char *const pkey_hash_algo[PKEY_HASH__LAST] = {
[PKEY_HASH_MD4] = "md4",
[PKEY_HASH_MD5] = "md5",
@ -70,6 +71,12 @@ const char *const pkey_hash_algo[PKEY_HASH__LAST] = {
[PKEY_HASH_SHA384] = "sha384",
[PKEY_HASH_SHA512] = "sha512",
[PKEY_HASH_SHA224] = "sha224",
[PKEY_HASH_STREEBOG_256] = "md_gost12_256",
[PKEY_HASH_STREEBOG_512] = "md_gost12_512",
};
/* Names that are primary for the kernel. */
const char *const pkey_hash_algo_kern[PKEY_HASH__LAST] = {
[PKEY_HASH_STREEBOG_256] = "streebog256",
[PKEY_HASH_STREEBOG_512] = "streebog512",
};
@ -551,6 +558,11 @@ int get_hash_algo(const char *algo)
!strcmp(algo, pkey_hash_algo[i]))
return i;
for (i = 0; i < PKEY_HASH__LAST; i++)
if (pkey_hash_algo_kern[i] &&
!strcmp(algo, pkey_hash_algo_kern[i]))
return i;
/* iterate over algorithms provided by kernel-headers */
for (i = 0; i < HASH_ALGO__LAST; i++)
if (hash_algo_name[i] &&