On 02/06/2013 10:39 PM, Andrew Beekhof wrote:
> I admit to having missed this at the time, but doesn't this warrant a
> little more by way of a commit message?
> What was the rationale and where was the big warning that "Corosync
> version X is no longer compatible with versions less than Y" in the
> documentation?
CVE-2013-0250
and it was also added to the 2.3.0 release notes by Honza.
We didn't have the CVE at the time of commit/release, so we couldn't
include it directly.
Fabio
>
> On Mon, Jan 14, 2013 at 9:46 PM, Fabio M. Di Nitto <fdinitto@xxxxxxxxxx> wrote:
>> From: "Fabio M. Di Nitto" <fdinitto@xxxxxxxxxx>
>>
>> Signed-off-by: Fabio M. Di Nitto <fdinitto@xxxxxxxxxx>
>> ---
>> conf/corosync.conf.example | 7 -
>> conf/lenses/corosync.aug | 1 -
>> conf/lenses/tests/test_corosync.aug | 2 -
>> exec/coroparse.c | 8 -
>> exec/main.c | 1 -
>> exec/totemconfig.c | 14 --
>> exec/totemcrypto.c | 273 +++++++++--------------------------
>> exec/totemcrypto.h | 1 -
>> exec/totemudp.c | 1 -
>> exec/totemudpu.c | 1 -
>> include/corosync/totem/totem.h | 2 -
>> man/corosync.conf.5 | 13 --
>> 12 files changed, 65 insertions(+), 259 deletions(-)
>>
>> diff --git a/conf/corosync.conf.example b/conf/corosync.conf.example
>> index 6ffb4cf..7121548 100644
>> --- a/conf/corosync.conf.example
>> +++ b/conf/corosync.conf.example
>> @@ -8,13 +8,6 @@ totem {
>> crypto_cipher: none
>> crypto_hash: none
>>
>> - # crypto_compat: 2.0|2.2 (default higher) can be used to change
>> - # on-wire crypto packet format. Unless performing some special
>> - # rolling upgrades from corosync < 2.2 to 2.2, to keep the cluster
>> - # running, do not touch this option. This option cannot be changed
>> - # at runtime.
>> - #crypto_compat: 2.2
>> -
>> # interface: define at least one interface to communicate
>> # over. If you define more than one interface stanza, you must
>> # also set rrp_mode.
>> diff --git a/conf/lenses/corosync.aug b/conf/lenses/corosync.aug
>> index cc2311c..1418c30 100644
>> --- a/conf/lenses/corosync.aug
>> +++ b/conf/lenses/corosync.aug
>> @@ -53,7 +53,6 @@ let totem =
>> |kv "crypto_type" /nss|aes256|aes192|aes128|3des/
>> |kv "crypto_cipher" /none|nss|aes256|aes192|aes128|3des/
>> |kv "crypto_hash" /none|md5|sha1|sha256|sha384|sha512/
>> - |kv "crypto_compat" /2.0|2.2/
>> |kv "transport" /udp|iba/
>> |kv "version" Rx.integer
>> |kv "nodeid" Rx.integer
>> diff --git a/conf/lenses/tests/test_corosync.aug b/conf/lenses/tests/test_corosync.aug
>> index 71e41bf..486b543 100644
>> --- a/conf/lenses/tests/test_corosync.aug
>> +++ b/conf/lenses/tests/test_corosync.aug
>> @@ -7,7 +7,6 @@ totem {
>> secauth: off
>> crypto_cipher: none
>> crypto_hash: none
>> - crypto_compat: 2.2
>> threads: 0
>> clear_node_high_bit: no
>> rrp_mode: none
>> @@ -97,7 +96,6 @@ test Corosync.lns get conf =
>> { "secauth" = "off" }
>> { "crypto_cipher" = "none" }
>> { "crypto_hash" = "none" }
>> - { "crypto_compat" = "2.2" }
>> { "threads" = "0" }
>> { "clear_node_high_bit" = "no" }
>> { "rrp_mode" = "none" }
>> diff --git a/exec/coroparse.c b/exec/coroparse.c
>> index d5a50bb..da25225 100644
>> --- a/exec/coroparse.c
>> +++ b/exec/coroparse.c
>> @@ -543,14 +543,6 @@ static int main_config_parser_cb(const char *path,
>> return (0);
>> }
>> }
>> - if (strcmp(path, "totem.crypto_compat") == 0) {
>> - if ((strcmp(value, "2.0") != 0) &&
>> - (strcmp(value, "2.2") != 0)) {
>> - *error_string = "Invalid crypto compat type";
>> -
>> - return (0);
>> - }
>> - }
>> break;
>>
>> case MAIN_CP_CB_DATA_STATE_QB:
>> diff --git a/exec/main.c b/exec/main.c
>> index 6a5dc45..7707a9d 100644
>> --- a/exec/main.c
>> +++ b/exec/main.c
>> @@ -913,7 +913,6 @@ static void set_icmap_ro_keys_flag (void)
>> */
>> icmap_set_ro_access("totem.crypto_cipher", CS_FALSE, CS_TRUE);
>> icmap_set_ro_access("totem.crypto_hash", CS_FALSE, CS_TRUE);
>> - icmap_set_ro_access("totem.crypto_compat", CS_FALSE, CS_TRUE);
>> icmap_set_ro_access("totem.secauth", CS_FALSE, CS_TRUE);
>> icmap_set_ro_access("totem.ip_version", CS_FALSE, CS_TRUE);
>> icmap_set_ro_access("totem.rrp_mode", CS_FALSE, CS_TRUE);
>> diff --git a/exec/totemconfig.c b/exec/totemconfig.c
>> index fc833f5..3257dd4 100644
>> --- a/exec/totemconfig.c
>> +++ b/exec/totemconfig.c
>> @@ -119,11 +119,9 @@ static void totem_get_crypto(struct totem_config *totem_config)
>> char *str;
>> const char *tmp_cipher;
>> const char *tmp_hash;
>> - const char *tmp_compat;
>>
>> tmp_hash = "sha1";
>> tmp_cipher = "aes256";
>> - tmp_compat = "2.2";
>>
>> if (icmap_get_string("totem.secauth", &str) == CS_OK) {
>> if (strcmp (str, "off") == 0) {
>> @@ -174,23 +172,11 @@ static void totem_get_crypto(struct totem_config *totem_config)
>> free(str);
>> }
>>
>> - if (icmap_get_string("totem.crypto_compat", &str) == CS_OK) {
>> - if (strcmp(str, "2.0") == 0) {
>> - tmp_compat = "2.0";
>> - }
>> - if (strcmp(str, "2.2") == 0) {
>> - tmp_compat = "2.2";
>> - }
>> - free(str);
>> - }
>> -
>> free(totem_config->crypto_cipher_type);
>> free(totem_config->crypto_hash_type);
>> - free(totem_config->crypto_compat_type);
>>
>> totem_config->crypto_cipher_type = strdup(tmp_cipher);
>> totem_config->crypto_hash_type = strdup(tmp_hash);
>> - totem_config->crypto_compat_type = strdup(tmp_compat);
>> }
>>
>> static uint16_t generate_cluster_id (const char *cluster_name)
>> diff --git a/exec/totemcrypto.c b/exec/totemcrypto.c
>> index 90cbb24..69818b8 100644
>> --- a/exec/totemcrypto.c
>> +++ b/exec/totemcrypto.c
>> @@ -82,8 +82,8 @@ struct crypto_config_header {
>> #endif
>>
>> /*
>> - * while CRYPTO_CIPHER_TYPE_2_2 is not a real cipher at all,
>> - * we still allocate a value for it because we use crypto_crypt_t
>> + * while CRYPTO_CIPHER_TYPE_2_X are not a real cipher at all,
>> + * we still allocate a value for them because we use crypto_crypt_t
>> * internally and we don't want overlaps
>> */
>>
>> @@ -93,6 +93,7 @@ enum crypto_crypt_t {
>> CRYPTO_CIPHER_TYPE_AES192 = 2,
>> CRYPTO_CIPHER_TYPE_AES128 = 3,
>> CRYPTO_CIPHER_TYPE_3DES = 4,
>> + CRYPTO_CIPHER_TYPE_2_3 = UINT8_MAX - 1,
>> CRYPTO_CIPHER_TYPE_2_2 = UINT8_MAX
>> };
>>
>> @@ -125,8 +126,8 @@ size_t cypher_block_len[] = {
>> */
>>
>> /*
>> - * while CRYPTO_HASH_TYPE_2_2 is not a real hash mechanism at all,
>> - * we still allocate a value for it because we use crypto_hash_t
>> + * while CRYPTO_HASH_TYPE_2_X are not a real hash mechanism at all,
>> + * we still allocate a value for them because we use crypto_hash_t
>> * internally and we don't want overlaps
>> */
>>
>> @@ -137,6 +138,7 @@ enum crypto_hash_t {
>> CRYPTO_HASH_TYPE_SHA256 = 3,
>> CRYPTO_HASH_TYPE_SHA384 = 4,
>> CRYPTO_HASH_TYPE_SHA512 = 5,
>> + CRYPTO_HASH_TYPE_2_3 = UINT8_MAX - 1,
>> CRYPTO_HASH_TYPE_2_2 = UINT8_MAX
>> };
>>
>> @@ -167,15 +169,6 @@ size_t hash_block_len[] = {
>> SHA512_BLOCK_LENGTH /* CRYPTO_HASH_TYPE_SHA512 */
>> };
>>
>> -/*
>> - * crypto on-wire compat
>> - */
>> -
>> -enum crypto_compat_t {
>> - CRYPTO_COMPAT_2_0 = 0,
>> - CRYPTO_COMPAT_2_2 = 1
>> -};
>> -
>> struct crypto_instance {
>> PK11SymKey *nss_sym_key;
>> PK11SymKey *nss_sym_key_sign;
>> @@ -188,8 +181,6 @@ struct crypto_instance {
>>
>> enum crypto_hash_t crypto_hash_type;
>>
>> - enum crypto_compat_t crypto_compat_type;
>> -
>> unsigned int crypto_header_size;
>>
>> void (*log_printf_func) (
>> @@ -216,20 +207,6 @@ do { \
>> } while (0);
>>
>> /*
>> - * compat functions
>> - */
>> -
>> -static int string_to_crypto_compat_type(const char* crypto_compat_type)
>> -{
>> - if (strcmp(crypto_compat_type, "2.0") == 0) {
>> - return CRYPTO_COMPAT_2_0;
>> - } else if (strcmp(crypto_compat_type, "2.1") == 0) {
>> - return CRYPTO_COMPAT_2_2;
>> - }
>> - return CRYPTO_COMPAT_2_2;
>> -}
>> -
>> -/*
>> * crypt/decrypt functions
>> */
>>
>> @@ -595,12 +572,11 @@ static int init_nss_db(struct crypto_instance *instance)
>>
>> static int init_nss(struct crypto_instance *instance,
>> const char *crypto_cipher_type,
>> - const char *crypto_hash_type,
>> - const char *crypto_compat_type)
>> + const char *crypto_hash_type)
>> {
>> log_printf(instance->log_level_notice,
>> - "Initializing transmit/receive security (NSS) crypto: %s hash: %s compat: %s",
>> - crypto_cipher_type, crypto_hash_type, crypto_compat_type);
>> + "Initializing transmit/receive security (NSS) crypto: %s hash: %s",
>> + crypto_cipher_type, crypto_hash_type);
>>
>> if (init_nss_db(instance) < 0) {
>> return -1;
>> @@ -617,31 +593,7 @@ static int init_nss(struct crypto_instance *instance,
>> return 0;
>> }
>>
>> -static int encrypt_and_sign_nss_2_0 (
>> - struct crypto_instance *instance,
>> - const unsigned char *buf_in,
>> - const size_t buf_in_len,
>> - unsigned char *buf_out,
>> - size_t *buf_out_len)
>> -{
>> - unsigned char *hash = buf_out;
>> - unsigned char *data = hash + hash_len[instance->crypto_hash_type];
>> -
>> - if (encrypt_nss(instance, buf_in, buf_in_len, data, buf_out_len) < 0) {
>> - return -1;
>> - }
>> -
>> - if (hash_to_nss[instance->crypto_hash_type]) {
>> - if (calculate_nss_hash(instance, data, *buf_out_len, hash) < 0) {
>> - return -1;
>> - }
>> - *buf_out_len = *buf_out_len + hash_len[instance->crypto_hash_type];
>> - }
>> -
>> - return 0;
>> -}
>> -
>> -static int encrypt_and_sign_nss_2_2 (
>> +static int encrypt_and_sign_nss_2_3 (
>> struct crypto_instance *instance,
>> const unsigned char *buf_in,
>> const size_t buf_in_len,
>> @@ -666,38 +618,7 @@ static int encrypt_and_sign_nss_2_2 (
>> return 0;
>> }
>>
>> -static int authenticate_and_decrypt_nss_2_0 (
>> - struct crypto_instance *instance,
>> - unsigned char *buf,
>> - int *buf_len)
>> -{
>> - if (hash_to_nss[instance->crypto_hash_type]) {
>> - unsigned char tmp_hash[hash_len[instance->crypto_hash_type]];
>> - unsigned char *hash = buf;
>> - unsigned char *data = hash + hash_len[instance->crypto_hash_type];
>> - int datalen = *buf_len - hash_len[instance->crypto_hash_type];
>> -
>> - if (calculate_nss_hash(instance, data, datalen, tmp_hash) < 0) {
>> - return -1;
>> - }
>> -
>> - if (memcmp(tmp_hash, hash, hash_len[instance->crypto_hash_type]) != 0) {
>> - log_printf(instance->log_level_error, "Digest does not match");
>> - return -1;
>> - }
>> -
>> - memmove(buf, data, datalen);
>> - *buf_len = datalen;
>> - }
>> -
>> - if (decrypt_nss(instance, buf, buf_len) < 0) {
>> - return -1;
>> - }
>> -
>> - return 0;
>> -}
>> -
>> -static int authenticate_nss_2_2 (
>> +static int authenticate_nss_2_3 (
>> struct crypto_instance *instance,
>> unsigned char *buf,
>> int *buf_len)
>> @@ -720,7 +641,7 @@ static int authenticate_nss_2_2 (
>> return 0;
>> }
>>
>> -static int decrypt_nss_2_2 (
>> +static int decrypt_nss_2_3 (
>> struct crypto_instance *instance,
>> unsigned char *buf,
>> int *buf_len)
>> @@ -765,7 +686,7 @@ size_t crypto_sec_header_size(
>> * crypto_cipher_type | crypto_hash_type | __pad0 | __pad1 | hash | salt | data
>> * only data is encrypted, hash only covers salt + data
>> *
>> - * 2.2 packet format
>> + * 2.2/2.3 packet format
>> * fake_crypto_cipher_type | fake_crypto_hash_type | __pad0 | __pad1 | salt | data | hash
>> * only data is encrypted, hash covers the whole packet
>> *
>> @@ -784,35 +705,14 @@ int crypto_encrypt_and_sign (
>> struct crypto_config_header *cch = (struct crypto_config_header *)buf_out;
>> int err;
>>
>> - switch (instance->crypto_compat_type) {
>> - case CRYPTO_COMPAT_2_0:
>> - cch->crypto_cipher_type = instance->crypto_cipher_type;
>> - cch->crypto_hash_type = instance->crypto_hash_type;
>> - cch->__pad0 = 0;
>> - cch->__pad1 = 0;
>> -
>> - buf_out += sizeof(struct crypto_config_header);
>> -
>> - err = encrypt_and_sign_nss_2_0(instance,
>> - buf_in, buf_in_len,
>> - buf_out, buf_out_len);
>> + cch->crypto_cipher_type = CRYPTO_CIPHER_TYPE_2_3;
>> + cch->crypto_hash_type = CRYPTO_HASH_TYPE_2_3;
>> + cch->__pad0 = 0;
>> + cch->__pad1 = 0;
>>
>> - *buf_out_len = *buf_out_len + sizeof(struct crypto_config_header);
>> - break;
>> - case CRYPTO_COMPAT_2_2:
>> - cch->crypto_cipher_type = CRYPTO_CIPHER_TYPE_2_2;
>> - cch->crypto_hash_type = CRYPTO_HASH_TYPE_2_2;
>> - cch->__pad0 = 0;
>> - cch->__pad1 = 0;
>> -
>> - err = encrypt_and_sign_nss_2_2(instance,
>> - buf_in, buf_in_len,
>> - buf_out, buf_out_len);
>> - break;
>> - default:
>> - err = -1;
>> - break;
>> - }
>> + err = encrypt_and_sign_nss_2_3(instance,
>> + buf_in, buf_in_len,
>> + buf_out, buf_out_len);
>>
>> return err;
>> }
>> @@ -823,92 +723,51 @@ int crypto_authenticate_and_decrypt (struct crypto_instance *instance,
>> {
>> struct crypto_config_header *cch = (struct crypto_config_header *)buf;
>>
>> - switch (instance->crypto_compat_type) {
>> - case CRYPTO_COMPAT_2_0:
>> -
>> - /*
>> - * decode crypto config of incoming packets
>> - */
>> -
>> - if (cch->crypto_cipher_type != instance->crypto_cipher_type) {
>> - log_printf(instance->log_level_security,
>> - "Incoming packet has different crypto type. Rejecting");
>> - return -1;
>> - }
>> -
>> - if (cch->crypto_hash_type != instance->crypto_hash_type) {
>> - log_printf(instance->log_level_security,
>> - "Incoming packet has different hash type. Rejecting");
>> - return -1;
>> - }
>> -
>> - if ((cch->__pad0 != 0) || (cch->__pad1 != 0)) {
>> - log_printf(instance->log_level_security,
>> - "Incoming packet appears to have features not supported by this version of corosync. Rejecting");
>> - return -1;
>> - }
>> -
>> - /*
>> - * invalidate config header and kill it
>> - */
>> -
>> - cch = NULL;
>> - *buf_len -= sizeof(struct crypto_config_header);
>> - memmove(buf, buf + sizeof(struct crypto_config_header), *buf_len);
>> -
>> - return authenticate_and_decrypt_nss_2_0(instance, buf, buf_len);
>> - break;
>> - case CRYPTO_COMPAT_2_2:
>> - if (cch->crypto_cipher_type != CRYPTO_CIPHER_TYPE_2_2) {
>> - log_printf(instance->log_level_security,
>> - "Incoming packet has different crypto type. Rejecting");
>> - return -1;
>> - }
>> -
>> - if (cch->crypto_hash_type != CRYPTO_HASH_TYPE_2_2) {
>> - log_printf(instance->log_level_security,
>> - "Incoming packet has different hash type. Rejecting");
>> - return -1;
>> - }
>> -
>> - /*
>> - * authenticate packet first
>> - */
>> -
>> - if (authenticate_nss_2_2(instance, buf, buf_len) != 0) {
>> - return -1;
>> - }
>> -
>> - /*
>> - * now we can "trust" the padding bytes/future features
>> - */
>> -
>> - if ((cch->__pad0 != 0) || (cch->__pad1 != 0)) {
>> - log_printf(instance->log_level_security,
>> - "Incoming packet appears to have features not supported by this version of corosync. Rejecting");
>> - return -1;
>> - }
>> -
>> - /*
>> - * decrypt
>> - */
>> -
>> - if (decrypt_nss_2_2(instance, buf, buf_len) != 0) {
>> - return -1;
>> - }
>> -
>> - /*
>> - * invalidate config header and kill it
>> - */
>> - cch = NULL;
>> - memmove(buf, buf + sizeof(struct crypto_config_header), *buf_len);
>> -
>> - return 0;
>> - break;
>> - default:
>> - return -1;
>> - break;
>> + if (cch->crypto_cipher_type != CRYPTO_CIPHER_TYPE_2_3) {
>> + log_printf(instance->log_level_security,
>> + "Incoming packet has different crypto type. Rejecting");
>> + return -1;
>> + }
>> +
>> + if (cch->crypto_hash_type != CRYPTO_HASH_TYPE_2_3) {
>> + log_printf(instance->log_level_security,
>> + "Incoming packet has different hash type. Rejecting");
>> + return -1;
>> + }
>> +
>> + /*
>> + * authenticate packet first
>> + */
>> +
>> + if (authenticate_nss_2_3(instance, buf, buf_len) != 0) {
>> + return -1;
>> + }
>> +
>> + /*
>> + * now we can "trust" the padding bytes/future features
>> + */
>> +
>> + if ((cch->__pad0 != 0) || (cch->__pad1 != 0)) {
>> + log_printf(instance->log_level_security,
>> + "Incoming packet appears to have features not supported by this version of corosync. Rejecting");
>> + return -1;
>> }
>> +
>> + /*
>> + * decrypt
>> + */
>> +
>> + if (decrypt_nss_2_3(instance, buf, buf_len) != 0) {
>> + return -1;
>> + }
>> +
>> + /*
>> + * invalidate config header and kill it
>> + */
>> + cch = NULL;
>> + memmove(buf, buf + sizeof(struct crypto_config_header), *buf_len);
>> +
>> + return 0;
>> }
>>
>> struct crypto_instance *crypto_init(
>> @@ -916,7 +775,6 @@ struct crypto_instance *crypto_init(
>> unsigned int private_key_len,
>> const char *crypto_cipher_type,
>> const char *crypto_hash_type,
>> - const char *crypto_compat_type,
>> void (*log_printf_func) (
>> int level,
>> int subsys,
>> @@ -942,7 +800,6 @@ struct crypto_instance *crypto_init(
>>
>> instance->crypto_cipher_type = string_to_crypto_cipher_type(crypto_cipher_type);
>> instance->crypto_hash_type = string_to_crypto_hash_type(crypto_hash_type);
>> - instance->crypto_compat_type = string_to_crypto_compat_type(crypto_compat_type);
>>
>> instance->crypto_header_size = crypto_sec_header_size(crypto_cipher_type, crypto_hash_type);
>>
>> @@ -952,7 +809,7 @@ struct crypto_instance *crypto_init(
>> instance->log_level_error = log_level_error;
>> instance->log_subsys_id = log_subsys_id;
>>
>> - if (init_nss(instance, crypto_cipher_type, crypto_hash_type, crypto_compat_type) < 0) {
>> + if (init_nss(instance, crypto_cipher_type, crypto_hash_type) < 0) {
>> free(instance);
>> return(NULL);
>> }
>> diff --git a/exec/totemcrypto.h b/exec/totemcrypto.h
>> index 4577050..7c06c39 100644
>> --- a/exec/totemcrypto.h
>> +++ b/exec/totemcrypto.h
>> @@ -61,7 +61,6 @@ extern struct crypto_instance *crypto_init(
>> unsigned int private_key_len,
>> const char *crypto_cipher_type,
>> const char *crypto_hash_type,
>> - const char *crypto_compat_type,
>> void (*log_printf_func) (
>> int level,
>> int subsys,
>> diff --git a/exec/totemudp.c b/exec/totemudp.c
>> index 5208961..a5169c2 100644
>> --- a/exec/totemudp.c
>> +++ b/exec/totemudp.c
>> @@ -1148,7 +1148,6 @@ int totemudp_initialize (
>> totem_config->private_key_len,
>> totem_config->crypto_cipher_type,
>> totem_config->crypto_hash_type,
>> - totem_config->crypto_compat_type,
>> instance->totemudp_log_printf,
>> instance->totemudp_log_level_security,
>> instance->totemudp_log_level_notice,
>> diff --git a/exec/totemudpu.c b/exec/totemudpu.c
>> index 14163c5..12ec63c 100644
>> --- a/exec/totemudpu.c
>> +++ b/exec/totemudpu.c
>> @@ -779,7 +779,6 @@ int totemudpu_initialize (
>> totem_config->private_key_len,
>> totem_config->crypto_cipher_type,
>> totem_config->crypto_hash_type,
>> - totem_config->crypto_compat_type,
>> instance->totemudpu_log_printf,
>> instance->totemudpu_log_level_security,
>> instance->totemudpu_log_level_notice,
>> diff --git a/include/corosync/totem/totem.h b/include/corosync/totem/totem.h
>> index 7ef8652..72a3e1a 100644
>> --- a/include/corosync/totem/totem.h
>> +++ b/include/corosync/totem/totem.h
>> @@ -176,8 +176,6 @@ struct totem_config {
>>
>> char *crypto_hash_type;
>>
>> - char *crypto_compat_type;
>> -
>> totem_transport_t transport_number;
>>
>> unsigned int miss_count_const;
>> diff --git a/man/corosync.conf.5 b/man/corosync.conf.5
>> index 43a339b..becbf86 100644
>> --- a/man/corosync.conf.5
>> +++ b/man/corosync.conf.5
>> @@ -181,19 +181,6 @@ Valid values are none (no encryption), aes256, aes192, aes128 and 3des.
>> The default is aes256.
>>
>> .TP
>> -crypto_compat
>> -This specifies which crypto protocol version should be used to encrypt all messages.
>> -Valid values are 2.0 and 2.2.
>> -
>> -The default is always is the higher supported version.
>> -
>> -This value should only be used when performing rolling upgrades from older
>> -versions of corosync to newer ones. It cannot be changed at runtime.
>> -
>> -Once the upgrade is completed, the cluster should be temporary halted to
>> -switch to the latest version of the protocol.
>> -
>> -.TP
>> secauth
>> This specifies that HMAC/SHA1 authentication should be used to authenticate
>> all messages. It further specifies that all data should be encrypted with the
>> --
>> 1.7.7.6
>>
>> _______________________________________________
>> discuss mailing list
>> discuss@xxxxxxxxxxxx
>> http://lists.corosync.org/mailman/listinfo/discuss
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