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-rw-r--r--utils/tomcrypt/src/misc/crypt/crypt_cipher_is_valid.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/utils/tomcrypt/src/misc/crypt/crypt_cipher_is_valid.c b/utils/tomcrypt/src/misc/crypt/crypt_cipher_is_valid.c
new file mode 100644
index 0000000000..2ba32bf5e8
--- /dev/null
+++ b/utils/tomcrypt/src/misc/crypt/crypt_cipher_is_valid.c
@@ -0,0 +1,34 @@
+/* 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_cipher_is_valid.c
+ Determine if cipher is valid, Tom St Denis
+*/
+
+/*
+ Test if a cipher index is valid
+ @param idx The index of the cipher to search for
+ @return CRYPT_OK if valid
+*/
+int cipher_is_valid(int idx)
+{
+ LTC_MUTEX_LOCK(&ltc_cipher_mutex);
+ if (idx < 0 || idx >= TAB_SIZE || cipher_descriptor[idx].name == NULL) {
+ LTC_MUTEX_UNLOCK(&ltc_cipher_mutex);
+ return CRYPT_INVALID_CIPHER;
+ }
+ LTC_MUTEX_UNLOCK(&ltc_cipher_mutex);
+ return CRYPT_OK;
+}
+
+/* ref: HEAD -> master, tag: v1.18.2 */
+/* git commit: 7e7eb695d581782f04b24dc444cbfde86af59853 */
+/* commit time: 2018-07-01 22:49:01 +0200 */