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cmac: enumerate cipher algorithms

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Identify the CMAC ciphers with an enum instead of string.
This commit is contained in:
Miroslav Lichvar
2020-05-13 13:35:52 +02:00
parent a8c8f2f309
commit 972c476c5a
8 changed files with 52 additions and 19 deletions
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10
cmac_nettle.c
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@@ -45,11 +45,11 @@ struct CMC_Instance_Record {
/* ================================================== */
unsigned int
CMC_GetKeyLength(const char *cipher)
CMC_GetKeyLength(CMC_Algorithm algorithm)
{
if (strcmp(cipher, "AES128") == 0)
if (algorithm == CMC_AES128)
return AES128_KEY_SIZE;
else if (strcmp(cipher, "AES256") == 0)
else if (algorithm == CMC_AES256)
return AES256_KEY_SIZE;
return 0;
}
@@ -57,11 +57,11 @@ CMC_GetKeyLength(const char *cipher)
/* ================================================== */
CMC_Instance
CMC_CreateInstance(const char *cipher, const unsigned char *key, unsigned int length)
CMC_CreateInstance(CMC_Algorithm algorithm, const unsigned char *key, unsigned int length)
{
CMC_Instance inst;
if (length == 0 || length != CMC_GetKeyLength(cipher))
if (length == 0 || length != CMC_GetKeyLength(algorithm))
return NULL;
inst = MallocNew(struct CMC_Instance_Record);