File 0007-Make-corosync-work-when-FIPS-mode-is-enabl... of Package corosync

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File 0007-Make-corosync-work-when-FIPS-mode-is-enabled.patch of Package corosync (Revision 051c76cd805d96a251473bbc2d83b03f)

Currently displaying revision 051c76cd805d96a251473bbc2d83b03f , Show latest

--- corosync-2.4.2.orig/exec/totemcrypto.c	2016-11-08 00:39:12.000000000 +0800
+++ corosync-2.4.2/exec/totemcrypto.c	2017-07-12 11:09:43.693227825 +0800
@@ -206,6 +206,13 @@
 		(const char *)format, ##args);				\
 } while (0);
 
+enum sym_key_type {
+	SYM_KEY_TYPE_CRYPT,
+	SYM_KEY_TYPE_HASH
+};
+
+#define MAX_WRAPPED_KEY_LEN		128
+
 /*
  * crypt/decrypt functions
  */
@@ -226,38 +233,147 @@
 	return CRYPTO_CIPHER_TYPE_AES256;
 }
 
-static int init_nss_crypto(struct crypto_instance *instance)
+static PK11SymKey *import_symmetric_key(struct crypto_instance *instance, enum sym_key_type key_type)
 {
-	PK11SlotInfo*	crypt_slot = NULL;
-	SECItem		crypt_param;
+	SECItem key_item;
+	PK11SlotInfo *slot;
+	PK11SymKey *res_key;
+	CK_MECHANISM_TYPE cipher;
+	CK_ATTRIBUTE_TYPE operation;
+	CK_MECHANISM_TYPE wrap_mechanism;
+	int wrap_key_len;
+	PK11SymKey *wrap_key;
+	PK11Context *wrap_key_crypt_context;
+	SECItem tmp_sec_item;
+	SECItem wrapped_key;
+	int wrapped_key_len;
+	unsigned char wrapped_key_data[MAX_WRAPPED_KEY_LEN];
+
+	memset(&key_item, 0, sizeof(key_item));
+	slot = NULL;
+	wrap_key = NULL;
+	res_key = NULL;
+	wrap_key_crypt_context = NULL;
+
+	key_item.type = siBuffer;
+	key_item.data = instance->private_key;
+
+	switch (key_type) {
+	case SYM_KEY_TYPE_CRYPT:
+		key_item.len = cipher_key_len[instance->crypto_cipher_type];
+		cipher = cipher_to_nss[instance->crypto_cipher_type];
+		operation = CKA_ENCRYPT|CKA_DECRYPT;
+		break;
+	case SYM_KEY_TYPE_HASH:
+		key_item.len = instance->private_key_len;
+		cipher = hash_to_nss[instance->crypto_hash_type];
+		operation = CKA_SIGN;
+		break;
+	}
+
+	slot = PK11_GetBestSlot(cipher, NULL);
+	if (slot == NULL) {
+		log_printf(instance->log_level_security, "Unable to find security slot (%d): %s",
+			PR_GetError(), PR_ErrorToString(PR_GetError(), PR_LANGUAGE_I_DEFAULT));
+		goto exit_res_key;
+	}
 
-	if (!cipher_to_nss[instance->crypto_cipher_type]) {
-		return 0;
+	/*
+	 * Without FIPS it would be possible to just use
+	 *  res_key = PK11_ImportSymKey(slot, cipher, PK11_OriginUnwrap, operation, &key_item, NULL);
+	 * with FIPS NSS Level 2 certification has to be "workarounded" (so it becomes Level 1) by using
+	 * following method:
+	 * 1. Generate wrap key
+	 * 2. Encrypt authkey with wrap key
+	 * 3. Unwrap encrypted authkey using wrap key
+	*/
+
+	/*
+	 * Generate wrapping key
+	 */
+	wrap_mechanism = PK11_GetBestWrapMechanism(slot);
+	wrap_key_len = PK11_GetBestKeyLength(slot, wrap_mechanism);
+	wrap_key = PK11_KeyGen(slot, wrap_mechanism, NULL, wrap_key_len, NULL);
+	if (wrap_key == NULL) {
+		log_printf(instance->log_level_security, "Unable to generate wrapping key (%d): %s",
+			PR_GetError(), PR_ErrorToString(PR_GetError(), PR_LANGUAGE_I_DEFAULT));
+		goto exit_res_key;
 	}
 
-	crypt_param.type = siBuffer;
-	crypt_param.data = instance->private_key;
-	crypt_param.len = cipher_key_len[instance->crypto_cipher_type];
+	/*
+	 * Encrypt authkey with wrapping key
+	 */
 
-	crypt_slot = PK11_GetBestSlot(cipher_to_nss[instance->crypto_cipher_type], NULL);
-	if (crypt_slot == NULL) {
-		log_printf(instance->log_level_security, "Unable to find security slot (err %d)",
-			   PR_GetError());
-		return -1;
+	/*
+	 * Initialization of IV is not needed because PK11_GetBestWrapMechanism should return ECB mode
+	 */
+	memset(&tmp_sec_item, 0, sizeof(tmp_sec_item));
+	wrap_key_crypt_context = PK11_CreateContextBySymKey(wrap_mechanism, CKA_ENCRYPT,
+		wrap_key, &tmp_sec_item);
+	if (wrap_key_crypt_context == NULL) {
+		log_printf(instance->log_level_security, "Unable to create encrypt context (%d): %s",
+			PR_GetError(), PR_ErrorToString(PR_GetError(), PR_LANGUAGE_I_DEFAULT));
+		goto exit_res_key;
+	}
+
+	wrapped_key_len = (int)sizeof(wrapped_key_data);
+
+	if (PK11_CipherOp(wrap_key_crypt_context, wrapped_key_data, &wrapped_key_len,
+		sizeof(wrapped_key_data), key_item.data, key_item.len) != SECSuccess) {
+		log_printf(instance->log_level_security, "Unable to encrypt authkey (%d): %s",
+			PR_GetError(), PR_ErrorToString(PR_GetError(), PR_LANGUAGE_I_DEFAULT));
+		goto exit_res_key;
+	}
+
+	if (PK11_Finalize(wrap_key_crypt_context) != SECSuccess) {
+		log_printf(instance->log_level_security, "Unable to finalize encryption of authkey (%d): %s",
+			PR_GetError(), PR_ErrorToString(PR_GetError(), PR_LANGUAGE_I_DEFAULT));
+		goto exit_res_key;
 	}
 
-	instance->nss_sym_key = PK11_ImportSymKey(crypt_slot,
-						  cipher_to_nss[instance->crypto_cipher_type],
-						  PK11_OriginUnwrap, CKA_ENCRYPT|CKA_DECRYPT,
-						  &crypt_param, NULL);
+	/*
+	 * Finally unwrap sym key
+	 */
+	memset(&tmp_sec_item, 0, sizeof(tmp_sec_item));
+	wrapped_key.data = wrapped_key_data;
+	wrapped_key.len = wrapped_key_len;
+
+	res_key = PK11_UnwrapSymKey(wrap_key, wrap_mechanism, &tmp_sec_item, &wrapped_key,
+		cipher, operation, key_item.len);
+	if (res_key == NULL) {
+		log_printf(instance->log_level_security, "Failure to import key into NSS (%d): %s",
+			PR_GetError(), PR_ErrorToString(PR_GetError(), PR_LANGUAGE_I_DEFAULT));
+		goto exit_res_key;
+	}
+
+exit_res_key:
+	if (wrap_key_crypt_context != NULL) {
+		PK11_DestroyContext(wrap_key_crypt_context, PR_TRUE);
+	}
+
+	if (wrap_key != NULL) {
+		PK11_FreeSymKey(wrap_key);
+	}
+
+	if (slot != NULL) {
+		PK11_FreeSlot(slot);
+	}
+
+	return (res_key);
+}
+
+static int init_nss_crypto(struct crypto_instance *instance)
+{
+
+	if (!cipher_to_nss[instance->crypto_cipher_type]) {
+		return 0;
+	}
+
+	instance->nss_sym_key = import_symmetric_key(instance, SYM_KEY_TYPE_CRYPT);
 	if (instance->nss_sym_key == NULL) {
-		log_printf(instance->log_level_security, "Failure to import key into NSS (err %d)",
-			   PR_GetError());
 		return -1;
 	}
 
-	PK11_FreeSlot(crypt_slot);
-
 	return 0;
 }
 
@@ -312,9 +428,9 @@
 						    nss_sec_param);
 	if (!crypt_context) {
 		log_printf(instance->log_level_security,
-			   "PK11_CreateContext failed (encrypt) crypt_type=%d (err %d)",
+			   "PK11_CreateContext failed (encrypt) crypt_type=%d (%d): %s",
 			   (int)cipher_to_nss[instance->crypto_cipher_type],
-			   PR_GetError());
+			   PR_GetError(), PR_ErrorToString(PR_GetError(), PR_LANGUAGE_I_DEFAULT));
 		goto out;
 	}
 
@@ -447,36 +563,16 @@
 
 static int init_nss_hash(struct crypto_instance *instance)
 {
-	PK11SlotInfo*	hash_slot = NULL;
-	SECItem		hash_param;
 
 	if (!hash_to_nss[instance->crypto_hash_type]) {
 		return 0;
 	}
 
-	hash_param.type = siBuffer;
-	hash_param.data = instance->private_key;
-	hash_param.len = instance->private_key_len;
-
-	hash_slot = PK11_GetBestSlot(hash_to_nss[instance->crypto_hash_type], NULL);
-	if (hash_slot == NULL) {
-		log_printf(instance->log_level_security, "Unable to find security slot (err %d)",
-			   PR_GetError());
-		return -1;
-	}
-
-	instance->nss_sym_key_sign = PK11_ImportSymKey(hash_slot,
-						       hash_to_nss[instance->crypto_hash_type],
-						       PK11_OriginUnwrap, CKA_SIGN,
-						       &hash_param, NULL);
+	instance->nss_sym_key_sign = import_symmetric_key(instance, SYM_KEY_TYPE_HASH);
 	if (instance->nss_sym_key_sign == NULL) {
-		log_printf(instance->log_level_security, "Failure to import key into NSS (err %d)",
-			   PR_GetError());
 		return -1;
 	}
 
-	PK11_FreeSlot(hash_slot);
-
 	return 0;
 }

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File 0007-Make-corosync-work-when-FIPS-mode-is-enabled.patch of Package corosync (Revision 051c76cd805d96a251473bbc2d83b03f)

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