openssl: Return the proper IV length for OpenSSL crypters

For instance, the NULL cipher has a block size of 1 but an IV length
of 0.

Fixes #854.

diff --git a/src/libstrongswan/plugins/openssl/openssl_crypter.c b/src/libstrongswan/plugins/openssl/openssl_crypter.c
index 07b96b3200a1aa10900f8d1603246f85c1816423..c2478a4ed96cd91628ffa41de0e5900ab393fb30 100644 (file)
--- a/src/libstrongswan/plugins/openssl/openssl_crypter.c
+++ b/src/libstrongswan/plugins/openssl/openssl_crypter.c
@@ -135,7 +135,7 @@ METHOD(crypter_t, get_block_size, size_t,
 METHOD(crypter_t, get_iv_size, size_t,
        private_openssl_crypter_t *this)
 {
-       return this->cipher->block_size;
+       return this->cipher->iv_len;
 }
 
 METHOD(crypter_t, get_key_size, size_t,