Add missing flags for EVP_chacha20()
ChaCha20 code uses its own custom cipher_data. Add EVP_CIPH_CUSTOM_IV
and EVP_CIPH_ALWAYS_CALL_INIT so that the key and the iv can be set by
different calls of EVP_CipherInit_ex().
@@ -127,7 +127,7 @@ static const EVP_CIPHER chacha20 = {
1, /* block_size */
CHACHA_KEY_SIZE, /* key_len */
CHACHA_CTR_SIZE, /* iv_len, 128-bit counter in the context */
- 0, /* flags */
+ EVP_CIPH_CUSTOM_IV | EVP_CIPH_ALWAYS_CALL_INIT,
chacha_init_key,
chacha_cipher,
NULL,
