diff options
Diffstat (limited to 'lib/crypto/c_src')
| -rw-r--r-- | lib/crypto/c_src/mac.c | 33 |
1 files changed, 29 insertions, 4 deletions
diff --git a/lib/crypto/c_src/mac.c b/lib/crypto/c_src/mac.c index cec9996afc..149975ba9d 100644 --- a/lib/crypto/c_src/mac.c +++ b/lib/crypto/c_src/mac.c @@ -34,6 +34,7 @@ struct mac_type_t { const char* str; /* before init, NULL for end-of-table */ ERL_NIF_TERM atom; /* after init, 'false' for end-of-table */ }name; + unsigned flags; union { const int pkey_type; }alg; @@ -41,6 +42,9 @@ struct mac_type_t { size_t key_len; /* != 0 to also match on key_len */ }; +/* masks in the flags field if mac_type_t */ +#define NO_FIPS_MAC 1 + #define NO_mac 0 #define HMAC_mac 1 #define CMAC_mac 2 @@ -48,7 +52,7 @@ struct mac_type_t { static struct mac_type_t mac_types[] = { - {{"poly1305"}, + {{"poly1305"}, NO_FIPS_MAC, #ifdef HAVE_POLY1305 /* If we have POLY then we have EVP_PKEY */ {EVP_PKEY_POLY1305}, POLY1305_mac, 32 @@ -57,7 +61,7 @@ static struct mac_type_t mac_types[] = #endif }, - {{"hmac"}, + {{"hmac"}, 0, #ifdef HAS_EVP_PKEY_CTX {EVP_PKEY_HMAC}, HMAC_mac, 0 #else @@ -66,7 +70,7 @@ static struct mac_type_t mac_types[] = #endif }, - {{"cmac"}, + {{"cmac"}, 0, #ifdef HAVE_CMAC /* If we have CMAC then we have EVP_PKEY */ {EVP_PKEY_CMAC}, CMAC_mac, 0 @@ -76,12 +80,21 @@ static struct mac_type_t mac_types[] = }, /*==== End of list ==== */ - {{NULL}, + {{NULL}, 0, {0}, NO_mac, 0 } }; +#ifdef FIPS_SUPPORT +/* May have FIPS support, must check dynamically if it is enabled */ +# define MAC_FORBIDDEN_IN_FIPS(P) (((P)->flags & NO_FIPS_MAC) && FIPS_mode()) +#else +/* No FIPS support since the symbol FIPS_SUPPORT is undefined */ +# define MAC_FORBIDDEN_IN_FIPS(P) 0 +#endif + + /*************************** Mandatory prototypes ***************************/ @@ -219,6 +232,12 @@ ERL_NIF_TERM mac_one_time(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) goto err; } + if (MAC_FORBIDDEN_IN_FIPS(macp)) + { + return_term = EXCP_NOTSUP(env, "MAC algorithm forbidden in FIPS"); + goto err; + } + /*-------------------------------------------------- Algorithm dependent indata checking and computation. If EVP_PKEY is available, only set the pkey variable @@ -500,6 +519,12 @@ ERL_NIF_TERM mac_init_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) goto err; } + if (MAC_FORBIDDEN_IN_FIPS(macp)) + { + return_term = EXCP_NOTSUP(env, "MAC algorithm forbidden in FIPS"); + goto err; + } + /*-------------------------------------------------- Algorithm dependent indata checking and computation. If EVP_PKEY is available, only set the pkey variable |