path: root/doc/crypto
diff options
authorJung-uk Kim <jkim@FreeBSD.org>2014-06-06 20:59:29 +0000
committerJung-uk Kim <jkim@FreeBSD.org>2014-06-06 20:59:29 +0000
commit2e22f5e2e00c1f1f599b03634ca27bb5b9ac471e (patch)
treea707d3fdb02faa3d4423773ae7b606febaa5e786 /doc/crypto
parent06369e3974fbc83d3778807c090fbe69f20a27d4 (diff)
Import OpenSSL 1.0.1h.vendor/openssl/1.0.1h
Approved by: so (delphij)
Notes: svn path=/vendor-crypto/openssl/dist/; revision=267188 svn path=/vendor-crypto/openssl/1.0.1h/; revision=267189; tag=vendor/openssl/1.0.1h
Diffstat (limited to 'doc/crypto')
6 files changed, 20 insertions, 6 deletions
diff --git a/doc/crypto/CMS_decrypt.pod b/doc/crypto/CMS_decrypt.pod
index d857e4f93f6e..3fa9212af32c 100644
--- a/doc/crypto/CMS_decrypt.pod
+++ b/doc/crypto/CMS_decrypt.pod
@@ -27,7 +27,21 @@ function or errors about unknown algorithms will occur.
Although the recipients certificate is not needed to decrypt the data it is
needed to locate the appropriate (of possible several) recipients in the CMS
-structure. If B<cert> is set to NULL all possible recipients are tried.
+If B<cert> is set to NULL all possible recipients are tried. This case however
+is problematic. To thwart the MMA attack (Bleichenbacher's attack on
+PKCS #1 v1.5 RSA padding) all recipients are tried whether they succeed or
+not. If no recipient succeeds then a random symmetric key is used to decrypt
+the content: this will typically output garbage and may (but is not guaranteed
+to) ultimately return a padding error only. If CMS_decrypt() just returned an
+error when all recipient encrypted keys failed to decrypt an attacker could
+use this in a timing attack. If the special flag B<CMS_DEBUG_DECRYPT> is set
+then the above behaviour is modified and an error B<is> returned if no
+recipient encrypted key can be decrypted B<without> generating a random
+content encryption key. Applications should use this flag with
+B<extreme caution> especially in automated gateways as it can leave them
+open to attack.
It is possible to determine the correct recipient key by other means (for
example looking them up in a database) and setting them in the CMS structure
diff --git a/doc/crypto/CONF_modules_free.pod b/doc/crypto/CONF_modules_free.pod
index 87bc7b783c9e..347020c5fe70 100644
--- a/doc/crypto/CONF_modules_free.pod
+++ b/doc/crypto/CONF_modules_free.pod
@@ -37,7 +37,7 @@ None of the functions return a value.
=head1 SEE ALSO
L<conf(5)|conf(5)>, L<OPENSSL_config(3)|OPENSSL_config(3)>,
-L<CONF_modules_load_file(3), CONF_modules_load_file(3)>
=head1 HISTORY
diff --git a/doc/crypto/CONF_modules_load_file.pod b/doc/crypto/CONF_modules_load_file.pod
index 9965d69bf2ec..0c4d926858fb 100644
--- a/doc/crypto/CONF_modules_load_file.pod
+++ b/doc/crypto/CONF_modules_load_file.pod
@@ -51,7 +51,7 @@ return value of the failing module (this will always be zero or negative).
=head1 SEE ALSO
L<conf(5)|conf(5)>, L<OPENSSL_config(3)|OPENSSL_config(3)>,
-L<CONF_free(3), CONF_free(3)>, L<err(3),err(3)>
+L<CONF_free(3)|CONF_free(3)>, L<err(3)|err(3)>
=head1 HISTORY
diff --git a/doc/crypto/OPENSSL_config.pod b/doc/crypto/OPENSSL_config.pod
index e7bba2aacae0..888de88f6bbf 100644
--- a/doc/crypto/OPENSSL_config.pod
+++ b/doc/crypto/OPENSSL_config.pod
@@ -73,7 +73,7 @@ Neither OPENSSL_config() nor OPENSSL_no_config() return a value.
=head1 SEE ALSO
L<conf(5)|conf(5)>, L<CONF_load_modules_file(3)|CONF_load_modules_file(3)>,
=head1 HISTORY
diff --git a/doc/crypto/X509_NAME_ENTRY_get_object.pod b/doc/crypto/X509_NAME_ENTRY_get_object.pod
index 41902c0d4553..4716e7ee7542 100644
--- a/doc/crypto/X509_NAME_ENTRY_get_object.pod
+++ b/doc/crypto/X509_NAME_ENTRY_get_object.pod
@@ -65,7 +65,7 @@ set first so the relevant field information can be looked up internally.
=head1 SEE ALSO
L<ERR_get_error(3)|ERR_get_error(3)>, L<d2i_X509_NAME(3)|d2i_X509_NAME(3)>,
=head1 HISTORY
diff --git a/doc/crypto/X509_STORE_CTX_get_ex_new_index.pod b/doc/crypto/X509_STORE_CTX_get_ex_new_index.pod
index 8d6b9dda47e7..8a9243d75613 100644
--- a/doc/crypto/X509_STORE_CTX_get_ex_new_index.pod
+++ b/doc/crypto/X509_STORE_CTX_get_ex_new_index.pod
@@ -15,7 +15,7 @@ X509_STORE_CTX_get_ex_new_index, X509_STORE_CTX_set_ex_data, X509_STORE_CTX_get_
int X509_STORE_CTX_set_ex_data(X509_STORE_CTX *d, int idx, void *arg);
- char *X509_STORE_CTX_get_ex_data(X509_STORE_CTX *d, int idx);
+ void *X509_STORE_CTX_get_ex_data(X509_STORE_CTX *d, int idx);