libnm-core: support private keys encrypted with AES-{192,256}-CBC

https://github.com/NetworkManager/NetworkManager/pull/189
(cherry picked from commit 93f85edcce)
(cherry picked from commit 74fc6f30b2)
(cherry picked from commit 9b46af1a62)

Makefile.am

@@ -682,7 +682,8 @@ EXTRA_DIST += \
 	libnm-core/tests/certs/test2_ca_cert.pem \
 	libnm-core/tests/certs/test2-cert.p12 \
 	libnm-core/tests/certs/test2_key_and_cert.pem \
-	libnm-core/tests/certs/test-aes-key.pem \
+	libnm-core/tests/certs/test-aes-128-key.pem \
+	libnm-core/tests/certs/test-aes-256-key.pem \
 	libnm-core/tests/certs/test_ca_cert.der \
 	libnm-core/tests/certs/test_ca_cert.pem \
 	libnm-core/tests/certs/test-ca-cert.pem \

libnm-core/crypto.c

@@ -158,7 +158,13 @@ parse_old_openssl_key_file (const guint8 *data,
 				goto parse_error;
 			}
 		} else if (!strncmp (p, DEK_INFO_TAG, strlen (DEK_INFO_TAG))) {
+			static const char *const known_ciphers[] = { CIPHER_DES_EDE3_CBC,
+			                                             CIPHER_DES_CBC,
+			                                             CIPHER_AES_128_CBC,
+			                                             CIPHER_AES_192_CBC,
+			                                             CIPHER_AES_256_CBC };
 			char *comma;
+			guint i;
 
 			if (enc_tags++ != 1 || str->len != 0) {
 				g_set_error (error, NM_CRYPTO_ERROR,
@@ -187,13 +193,13 @@ parse_old_openssl_key_file (const guint8 *data,
 			iv = g_strdup (comma);
 
 			/* Get the private key cipher */
-			if (!strcasecmp (p, "DES-EDE3-CBC")) {
+			for (i = 0; i < G_N_ELEMENTS (known_ciphers); i++) {
-				cipher = g_strdup (p);
+				if (!g_ascii_strcasecmp (p, known_ciphers[i])) {
-			} else if (!strcasecmp (p, "DES-CBC")) {
+					cipher = g_strdup (known_ciphers[i]);
-				cipher = g_strdup (p);
+					break;
-			} else if (!strcasecmp (p, "AES-128-CBC")) {
+				}
-				cipher = g_strdup (p);
+			}
-			} else {
+			if (i == G_N_ELEMENTS (known_ciphers)) {
 				g_set_error (error, NM_CRYPTO_ERROR,
 				             NM_CRYPTO_ERROR_INVALID_DATA,
 				             _("Malformed PEM file: unknown private key cipher '%s'."),
@@ -383,12 +389,16 @@ crypto_make_des_aes_key (const char *cipher,
 	g_return_val_if_fail (password != NULL, NULL);
 	g_return_val_if_fail (out_len != NULL, NULL);
 
-	if (!strcmp (cipher, "DES-EDE3-CBC"))
+	if (!strcmp (cipher, CIPHER_DES_EDE3_CBC))
 		digest_len = 24;
-	else if (!strcmp (cipher, "DES-CBC"))
+	else if (!strcmp (cipher, CIPHER_DES_CBC))
 		digest_len = 8;
-	else if (!strcmp (cipher, "AES-128-CBC"))
+	else if (!strcmp (cipher, CIPHER_AES_128_CBC))
 		digest_len = 16;
+	else if (!strcmp (cipher, CIPHER_AES_192_CBC))
+		digest_len = 24;
+	else if (!strcmp (cipher, CIPHER_AES_256_CBC))
+		digest_len = 32;
 	else {
 		g_set_error (error, NM_CRYPTO_ERROR,
 		             NM_CRYPTO_ERROR_UNKNOWN_CIPHER,

libnm-core/crypto.h

@@ -26,8 +26,10 @@
 
 #define MD5_HASH_LEN 20
 #define CIPHER_DES_EDE3_CBC "DES-EDE3-CBC"
-#define CIPHER_DES_CBC "DES-CBC"
+#define CIPHER_DES_CBC      "DES-CBC"
-#define CIPHER_AES_CBC "AES-128-CBC"
+#define CIPHER_AES_128_CBC  "AES-128-CBC"
+#define CIPHER_AES_192_CBC  "AES-192-CBC"
+#define CIPHER_AES_256_CBC  "AES-256-CBC"
 
 typedef enum {
 	NM_CRYPTO_KEY_TYPE_UNKNOWN = 0,

libnm-core/crypto_gnutls.c

@@ -82,9 +82,15 @@ crypto_decrypt (const char *cipher,
 	} else if (!strcmp (cipher, CIPHER_DES_CBC)) {
 		cipher_mech = GNUTLS_CIPHER_DES_CBC;
 		real_iv_len = SALT_LEN;
-	} else if (!strcmp (cipher, CIPHER_AES_CBC)) {
+	} else if (!strcmp (cipher, CIPHER_AES_128_CBC)) {
 		cipher_mech = GNUTLS_CIPHER_AES_128_CBC;
 		real_iv_len = 16;
+	} else if (!strcmp (cipher, CIPHER_AES_192_CBC)) {
+		cipher_mech = GNUTLS_CIPHER_AES_192_CBC;
+		real_iv_len = 16;
+	} else if (!strcmp (cipher, CIPHER_AES_256_CBC)) {
+		cipher_mech = GNUTLS_CIPHER_AES_256_CBC;
+		real_iv_len = 16;
 	} else {
 		g_set_error (error, NM_CRYPTO_ERROR,
 		             NM_CRYPTO_ERROR_UNKNOWN_CIPHER,
@@ -189,8 +195,12 @@ crypto_encrypt (const char *cipher,
 
 	if (!strcmp (cipher, CIPHER_DES_EDE3_CBC))
 		cipher_mech = GNUTLS_CIPHER_3DES_CBC;
-	else if (!strcmp (cipher, CIPHER_AES_CBC))
+	else if (!strcmp (cipher, CIPHER_AES_128_CBC))
 		cipher_mech = GNUTLS_CIPHER_AES_128_CBC;
+	else if (!strcmp (cipher, CIPHER_AES_192_CBC))
+		cipher_mech = GNUTLS_CIPHER_AES_192_CBC;
+	else if (!strcmp (cipher, CIPHER_AES_256_CBC))
+		cipher_mech = GNUTLS_CIPHER_AES_256_CBC;
 	else {
 		g_set_error (error, NM_CRYPTO_ERROR,
 		             NM_CRYPTO_ERROR_UNKNOWN_CIPHER,

libnm-core/crypto_nss.c

@@ -103,7 +103,9 @@ crypto_decrypt (const char *cipher,
 	} else if (!strcmp (cipher, CIPHER_DES_CBC)) {
 		cipher_mech = CKM_DES_CBC_PAD;
 		real_iv_len = 8;
-	} else if (!strcmp (cipher, CIPHER_AES_CBC)) {
+	} else if (NM_IN_STRSET (cipher, CIPHER_AES_128_CBC,
+	                                 CIPHER_AES_192_CBC,
+	                                 CIPHER_AES_256_CBC)) {
 		cipher_mech = CKM_AES_CBC_PAD;
 		real_iv_len = 16;
 	} else {
@@ -269,7 +271,10 @@ crypto_encrypt (const char *cipher,
 
 	if (!strcmp (cipher, CIPHER_DES_EDE3_CBC))
 		cipher_mech = CKM_DES3_CBC_PAD;
-	else if (!strcmp (cipher, CIPHER_AES_CBC))
+	else if (NM_IN_STRSET (cipher,
+	                       CIPHER_AES_128_CBC,
+	                       CIPHER_AES_192_CBC,
+	                       CIPHER_AES_256_CBC))
 		cipher_mech = CKM_AES_CBC_PAD;
 	else {
 		g_set_error (error, NM_CRYPTO_ERROR,

libnm-core/tests/certs/test-aes-256-key.pem

@@ -0,0 +1,54 @@
+-----BEGIN RSA PRIVATE KEY-----
+Proc-Type: 4,ENCRYPTED
+DEK-Info: AES-256-CBC,5FF6BD2D4E57E8933D4A6814DEF5305A
+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+aDCvWm+bbV6M9rSgjhJ3bWOudiw+EBMGvSamSnS7CYnRmwq4t+4bM2sh2nYKY0qw
+-----END RSA PRIVATE KEY-----

libnm-core/tests/test-crypto.c

@@ -474,8 +474,11 @@ main (int argc, char **argv)
 	g_test_add_data_func ("/libnm/crypto/key/padding-8",
 	                      "test2_key_and_cert.pem, 12345testing",
 	                      test_key);
-	g_test_add_data_func ("/libnm/crypto/key/aes",
+	g_test_add_data_func ("/libnm/crypto/key/aes-128",
-	                      "test-aes-key.pem, test-aes-password",
+	                      "test-aes-128-key.pem, test-aes-password",
+	                      test_key);
+	g_test_add_data_func ("/libnm/crypto/key/aes-256",
+	                      "test-aes-256-key.pem, test-aes-password",
 	                      test_key);
 	g_test_add_data_func ("/libnm/crypto/key/decrypted",
 	                      "test-key-only-decrypted.pem",

libnm-util/tests/test-crypto.c

@@ -381,8 +381,8 @@ main (int argc, char **argv)
 	g_test_add_data_func ("/libnm/crypto/key/padding-8",
 	                      "test2_key_and_cert.pem, 12345testing",
 	                      test_key);
-	g_test_add_data_func ("/libnm/crypto/key/aes",
+	g_test_add_data_func ("/libnm/crypto/key/aes-128",
-	                      "test-aes-key.pem, test-aes-password",
+	                      "test-aes-128-key.pem, test-aes-password",
 	                      test_key);
 
 	g_test_add_data_func ("/libnm/crypto/PKCS#12/1",