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authorHans Nilsson <[email protected]>2018-09-11 17:21:30 +0200
committerHans Nilsson <[email protected]>2018-09-14 12:22:04 +0200
commit2cf63f4e429c60b7d77bd15c73fd298ee53710ae (patch)
tree09e502358684925a5a41a0673fe02dcb19e5fe11 /lib/crypto/c_src/crypto.c
parentf11391139c4165e8541a52d45cd1525343a83927 (diff)
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crypto: Add AES_CCM crypto
Will be increase interoperability of future SSL application versions.
Diffstat (limited to 'lib/crypto/c_src/crypto.c')
-rw-r--r--lib/crypto/c_src/crypto.c59
1 files changed, 58 insertions, 1 deletions
diff --git a/lib/crypto/c_src/crypto.c b/lib/crypto/c_src/crypto.c
index 4442692537..e99c1bb38c 100644
--- a/lib/crypto/c_src/crypto.c
+++ b/lib/crypto/c_src/crypto.c
@@ -187,6 +187,7 @@
# define HAVE_EVP_AES_CTR
# define HAVE_AEAD
# define HAVE_GCM
+# define HAVE_CCM
# define HAVE_CMAC
# if OPENSSL_VERSION_NUMBER < PACKED_OPENSSL_VERSION(1,0,1,'d')
# define HAVE_GCM_EVP_DECRYPT_BUG
@@ -716,6 +717,9 @@ static ERL_NIF_TERM atom_aes_cfb128;
#ifdef HAVE_GCM
static ERL_NIF_TERM atom_aes_gcm;
#endif
+#ifdef HAVE_CCM
+static ERL_NIF_TERM atom_aes_ccm;
+#endif
#ifdef HAVE_ECB_IVEC_BUG
static ERL_NIF_TERM atom_aes_ecb;
static ERL_NIF_TERM atom_des_ecb;
@@ -1159,6 +1163,9 @@ static int initialize(ErlNifEnv* env, ERL_NIF_TERM load_info)
#ifdef HAVE_GCM
atom_aes_gcm = enif_make_atom(env, "aes_gcm");
#endif
+#ifdef HAVE_CCM
+ atom_aes_ccm = enif_make_atom(env, "aes_ccm");
+#endif
#ifdef HAVE_ECB_IVEC_BUG
atom_aes_ecb = enif_make_atom(env, "aes_ecb");
atom_des_ecb = enif_make_atom(env, "des_ecb");
@@ -1321,7 +1328,7 @@ static ERL_NIF_TERM algo_hash[12]; /* increase when extending the list */
static int algo_pubkey_cnt, algo_pubkey_fips_cnt;
static ERL_NIF_TERM algo_pubkey[11]; /* increase when extending the list */
static int algo_cipher_cnt, algo_cipher_fips_cnt;
-static ERL_NIF_TERM algo_cipher[24]; /* increase when extending the list */
+static ERL_NIF_TERM algo_cipher[25]; /* increase when extending the list */
static int algo_mac_cnt, algo_mac_fips_cnt;
static ERL_NIF_TERM algo_mac[3]; /* increase when extending the list */
static int algo_curve_cnt, algo_curve_fips_cnt;
@@ -1397,6 +1404,9 @@ static void init_algorithms_types(ErlNifEnv* env)
#if defined(HAVE_GCM)
algo_cipher[algo_cipher_cnt++] = enif_make_atom(env,"aes_gcm");
#endif
+#if defined(HAVE_CCM)
+ algo_cipher[algo_cipher_cnt++] = enif_make_atom(env,"aes_ccm");
+#endif
// Non-validated algorithms follow
algo_cipher_fips_cnt = algo_cipher_cnt;
#ifdef HAVE_AES_IGE
@@ -2560,6 +2570,22 @@ static ERL_NIF_TERM aead_encrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM ar
} else
#endif
+#if defined(HAVE_CCM)
+ if ((type == atom_aes_ccm)
+ && (7 <= iv.size && iv.size <= 13)
+ && (4 <= tag_len && tag_len <= 16)
+ && ((tag_len & 1) == 0)
+ ) {
+ ctx_ctrl_set_ivlen = EVP_CTRL_CCM_SET_IVLEN;
+ ctx_ctrl_get_tag = EVP_CTRL_CCM_GET_TAG;
+ if (key.size == 16) cipher = EVP_aes_128_ccm();
+ else if (key.size == 24) cipher = EVP_aes_192_ccm();
+ else if (key.size == 32) cipher = EVP_aes_256_ccm();
+ else
+ enif_make_badarg(env);
+
+ } else
+#endif
enif_make_badarg(env);
ctx = EVP_CIPHER_CTX_new();
@@ -2571,6 +2597,13 @@ static ERL_NIF_TERM aead_encrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM ar
if (EVP_EncryptInit_ex(ctx, NULL, NULL, key.data, iv.data) != 1) goto out_err;
} else
#endif
+#if defined(HAVE_CCM)
+ if (type == atom_aes_ccm) {
+ if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_CCM_SET_TAG, tag_len, NULL) != 1) goto out_err;
+ if (EVP_EncryptInit_ex(ctx, NULL, NULL, key.data, iv.data) != 1) goto out_err;
+ if (EVP_EncryptUpdate(ctx, NULL, &len, NULL, in.size) != 1) goto out_err;
+ } else
+#endif
goto out_err;
if (EVP_EncryptUpdate(ctx, NULL, &len, aad.data, aad.size) != 1) goto out_err;
@@ -2635,6 +2668,18 @@ static ERL_NIF_TERM aead_decrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM ar
} else
#endif
+#if defined(HAVE_CCM)
+ if ((type == atom_aes_ccm)
+ && (iv.size > 0)) {
+ ctx_ctrl_set_ivlen = EVP_CTRL_CCM_SET_IVLEN;
+ if (key.size == 16) cipher = EVP_aes_128_ccm();
+ else if (key.size == 24) cipher = EVP_aes_192_ccm();
+ else if (key.size == 32) cipher = EVP_aes_256_ccm();
+ else
+ enif_make_badarg(env);
+
+ } else
+#endif
enif_make_badarg(env);
outp = enif_make_new_binary(env, in.size, &out);
@@ -2643,8 +2688,20 @@ static ERL_NIF_TERM aead_decrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM ar
if (EVP_DecryptInit_ex(ctx, cipher, NULL, NULL, NULL) != 1) goto out_err;
if (EVP_CIPHER_CTX_ctrl(ctx, ctx_ctrl_set_ivlen, iv.size, NULL) != 1) goto out_err;
+#if defined(HAVE_CCM)
+ if (type == atom_aes_ccm) {
+ if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_CCM_SET_TAG, tag.size, tag.data) != 1) goto out_err;
+ }
+#endif
+
if (EVP_DecryptInit_ex(ctx, NULL, NULL, key.data, iv.data) != 1) goto out_err;
+#if defined(HAVE_CCM)
+ if (type == atom_aes_ccm) {
+ if (1 != EVP_DecryptUpdate(ctx, NULL, &len, NULL, in.size)) goto out_err;
+ }
+#endif
+
if (EVP_DecryptUpdate(ctx, NULL, &len, aad.data, aad.size) != 1) goto out_err;
if (EVP_DecryptUpdate(ctx, outp, &len, in.data, in.size) != 1) goto out_err;