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authorDominik Riebeling <Dominik.Riebeling@gmail.com>2020-08-08 18:45:07 +0200
committerDominik Riebeling <Dominik.Riebeling@gmail.com>2020-10-18 19:08:32 +0200
commitcaa9d9c1c5cc4347edca0c9a9868fdd105b5e779 (patch)
tree403787a018da9eced31d1f84b6493e59466dddc7 /utils/tomcrypt/src/misc/crypt/crypt_register_cipher.c
parent7603533f7fc9f7aec7c04a1258cf772247170e90 (diff)
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utils: Add (partial) libtomcrypt.
Add the parts of libtomcrypt that we're about to use. Change-Id: I0adc1d7d1f4833e7bb3ed53b9a4d9a85977cfb8b
Diffstat (limited to 'utils/tomcrypt/src/misc/crypt/crypt_register_cipher.c')
-rw-r--r--utils/tomcrypt/src/misc/crypt/crypt_register_cipher.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/utils/tomcrypt/src/misc/crypt/crypt_register_cipher.c b/utils/tomcrypt/src/misc/crypt/crypt_register_cipher.c
new file mode 100644
index 0000000000..59fc042d89
--- /dev/null
+++ b/utils/tomcrypt/src/misc/crypt/crypt_register_cipher.c
@@ -0,0 +1,52 @@
+/* LibTomCrypt, modular cryptographic library -- Tom St Denis
+ *
+ * LibTomCrypt is a library that provides various cryptographic
+ * algorithms in a highly modular and flexible manner.
+ *
+ * The library is free for all purposes without any express
+ * guarantee it works.
+ */
+#include "tomcrypt.h"
+
+/**
+ @file crypt_register_cipher.c
+ Register a cipher, Tom St Denis
+*/
+
+/**
+ Register a cipher with the descriptor table
+ @param cipher The cipher you wish to register
+ @return value >= 0 if successfully added (or already present), -1 if unsuccessful
+*/
+int register_cipher(const struct ltc_cipher_descriptor *cipher)
+{
+ int x;
+
+ LTC_ARGCHK(cipher != NULL);
+
+ /* is it already registered? */
+ LTC_MUTEX_LOCK(&ltc_cipher_mutex);
+ for (x = 0; x < TAB_SIZE; x++) {
+ if (cipher_descriptor[x].name != NULL && cipher_descriptor[x].ID == cipher->ID) {
+ LTC_MUTEX_UNLOCK(&ltc_cipher_mutex);
+ return x;
+ }
+ }
+
+ /* find a blank spot */
+ for (x = 0; x < TAB_SIZE; x++) {
+ if (cipher_descriptor[x].name == NULL) {
+ XMEMCPY(&cipher_descriptor[x], cipher, sizeof(struct ltc_cipher_descriptor));
+ LTC_MUTEX_UNLOCK(&ltc_cipher_mutex);
+ return x;
+ }
+ }
+
+ /* no spot */
+ LTC_MUTEX_UNLOCK(&ltc_cipher_mutex);
+ return -1;
+}
+
+/* ref: HEAD -> master, tag: v1.18.2 */
+/* git commit: 7e7eb695d581782f04b24dc444cbfde86af59853 */
+/* commit time: 2018-07-01 22:49:01 +0200 */