diff options
Diffstat (limited to 'src/vnet/crypto')
| -rw-r--r-- | src/vnet/crypto/crypto.c | 36 | ||||
| -rw-r--r-- | src/vnet/crypto/crypto.h | 30 |
2 files changed, 50 insertions, 16 deletions
diff --git a/src/vnet/crypto/crypto.c b/src/vnet/crypto/crypto.c index b748e47fd3d..eecbd5f49a4 100644 --- a/src/vnet/crypto/crypto.c +++ b/src/vnet/crypto/crypto.c @@ -167,6 +167,33 @@ vnet_crypto_register_key_handler (vlib_main_t * vm, u32 engine_index, return; } +static int +vnet_crypto_key_len_check (vnet_crypto_alg_t alg, u16 length) +{ + switch (alg) + { + case VNET_CRYPTO_N_ALGS: + return 0; + case VNET_CRYPTO_ALG_NONE: + return 1; + +#define _(n, s, l) \ + case VNET_CRYPTO_ALG_##n: \ + if ((l) == length) \ + return 1; + foreach_crypto_cipher_alg foreach_crypto_aead_alg +#undef _ + /* HMAC allows any key length */ +#define _(n, s) \ + case VNET_CRYPTO_ALG_HMAC_##n: \ + return 1; + foreach_crypto_hmac_alg +#undef _ + } + + return 0; +} + u32 vnet_crypto_key_add (vlib_main_t * vm, vnet_crypto_alg_t alg, u8 * data, u16 length) @@ -175,6 +202,11 @@ vnet_crypto_key_add (vlib_main_t * vm, vnet_crypto_alg_t alg, u8 * data, vnet_crypto_main_t *cm = &crypto_main; vnet_crypto_engine_t *engine; vnet_crypto_key_t *key; + + ASSERT (vnet_crypto_key_len_check (alg, length)); + if (!vnet_crypto_key_len_check (alg, length)) + return ~0; + pool_get_zero (cm->keys, key); index = key - cm->keys; key->alg = alg; @@ -279,13 +311,13 @@ vnet_crypto_init (vlib_main_t * vm) cm->alg_index_by_name = hash_create_string (0, sizeof (uword)); vec_validate_aligned (cm->threads, tm->n_vlib_mains, CLIB_CACHE_LINE_BYTES); vec_validate (cm->algs, VNET_CRYPTO_N_ALGS); -#define _(n, s) \ +#define _(n, s, l) \ vnet_crypto_init_cipher_data (VNET_CRYPTO_ALG_##n, \ VNET_CRYPTO_OP_##n##_ENC, \ VNET_CRYPTO_OP_##n##_DEC, s, 0); foreach_crypto_cipher_alg; #undef _ -#define _(n, s) \ +#define _(n, s, l) \ vnet_crypto_init_cipher_data (VNET_CRYPTO_ALG_##n, \ VNET_CRYPTO_OP_##n##_ENC, \ VNET_CRYPTO_OP_##n##_DEC, s, 1); diff --git a/src/vnet/crypto/crypto.h b/src/vnet/crypto/crypto.h index 95bc72b2dc0..5af0822812f 100644 --- a/src/vnet/crypto/crypto.h +++ b/src/vnet/crypto/crypto.h @@ -20,20 +20,22 @@ #include <vlib/vlib.h> +/* CRYPTO_ID, PRETTY_NAME, KEY_LENGTH_IN_BYTES */ #define foreach_crypto_cipher_alg \ - _(DES_CBC, "des-cbc") \ - _(3DES_CBC, "3des-cbc") \ - _(AES_128_CBC, "aes-128-cbc") \ - _(AES_192_CBC, "aes-192-cbc") \ - _(AES_256_CBC, "aes-256-cbc") \ - _(AES_128_CTR, "aes-128-ctr") \ - _(AES_192_CTR, "aes-192-ctr") \ - _(AES_256_CTR, "aes-256-ctr") - + _(DES_CBC, "des-cbc", 7) \ + _(3DES_CBC, "3des-cbc", 14) \ + _(AES_128_CBC, "aes-128-cbc", 16) \ + _(AES_192_CBC, "aes-192-cbc", 24) \ + _(AES_256_CBC, "aes-256-cbc", 32) \ + _(AES_128_CTR, "aes-128-ctr", 16) \ + _(AES_192_CTR, "aes-192-ctr", 24) \ + _(AES_256_CTR, "aes-256-ctr", 32) + +/* CRYPTO_ID, PRETTY_NAME, KEY_LENGTH_IN_BYTES */ #define foreach_crypto_aead_alg \ - _(AES_128_GCM, "aes-128-gcm") \ - _(AES_192_GCM, "aes-192-gcm") \ - _(AES_256_GCM, "aes-256-gcm") + _(AES_128_GCM, "aes-128-gcm", 16) \ + _(AES_192_GCM, "aes-192-gcm", 24) \ + _(AES_256_GCM, "aes-256-gcm", 32) #define foreach_crypto_hmac_alg \ _(MD5, "md5") \ @@ -85,7 +87,7 @@ typedef enum typedef enum { VNET_CRYPTO_ALG_NONE = 0, -#define _(n, s) VNET_CRYPTO_ALG_##n, +#define _(n, s, l) VNET_CRYPTO_ALG_##n, foreach_crypto_cipher_alg foreach_crypto_aead_alg #undef _ @@ -104,7 +106,7 @@ typedef struct typedef enum { VNET_CRYPTO_OP_NONE = 0, -#define _(n, s) VNET_CRYPTO_OP_##n##_ENC, VNET_CRYPTO_OP_##n##_DEC, +#define _(n, s, l) VNET_CRYPTO_OP_##n##_ENC, VNET_CRYPTO_OP_##n##_DEC, foreach_crypto_cipher_alg foreach_crypto_aead_alg #undef _ |