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authorPauli <paul.dale@oracle.com>2017-03-08 11:18:55 +1000
committerRich Salz <rsalz@openssl.org>2017-03-08 10:12:52 -0500
commitb97324dbcb12e8b509d513ded9ba3f71c14547d8 (patch)
tree0d85ab1e3952c6a90bafb4716faf32ceef710dc7
parenta556145a2c973303fd70315d9b77f126f43638f0 (diff)
Limit the output of the enc -ciphers command
to just the ciphers enc can process. This means no AEAD ciphers and no XTS mode. Reviewed-by: Richard Levitte <levitte@openssl.org> Reviewed-by: Rich Salz <rsalz@openssl.org> (Merged from https://github.com/openssl/openssl/pull/2876) (cherry picked from commit 777f1708a88f85569304caeca197c96ef912b236)
-rw-r--r--apps/enc.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/apps/enc.c b/apps/enc.c
index ec5fc941cf..3b3381fed9 100644
--- a/apps/enc.c
+++ b/apps/enc.c
@@ -563,10 +563,18 @@ static void show_ciphers(const OBJ_NAME *name, void *bio_)
{
BIO *bio = bio_;
static int n;
+ const EVP_CIPHER *cipher;
if (!islower((unsigned char)*name->name))
return;
+ /* Filter out ciphers that we cannot use */
+ cipher = EVP_get_cipherbyname(name->name);
+ if (cipher == NULL ||
+ (EVP_CIPHER_flags(cipher) & EVP_CIPH_FLAG_AEAD_CIPHER) != 0 ||
+ EVP_CIPHER_mode(cipher) == EVP_CIPH_XTS_MODE)
+ return;
+
BIO_printf(bio, "-%-25s", name->name);
if (++n == 3) {
BIO_printf(bio, "\n");