+ ivp = (i == 1) ? c->r_iv : cnow-RIJNDAEL_BLOCKSIZE;
+ for (j = 0; j < RIJNDAEL_BLOCKSIZE; j++)
+ plain[j] ^= ivp[j];
+ }
+ memcpy(c->r_iv, buf, RIJNDAEL_BLOCKSIZE);
+ }
+ return (1);
+}
+static int
+ssh_rijndael_cleanup(EVP_CIPHER_CTX *ctx)
+{
+ struct ssh_rijndael_ctx *c;
+
+ if ((c = EVP_CIPHER_CTX_get_app_data(ctx)) != NULL) {
+ memset(c, 0, sizeof(*c));
+ xfree(c);
+ EVP_CIPHER_CTX_set_app_data(ctx, NULL);
+ }
+ return (1);
+}
+static EVP_CIPHER *
+evp_rijndael(void)
+{
+ static EVP_CIPHER rijndal_cbc;
+
+ memset(&rijndal_cbc, 0, sizeof(EVP_CIPHER));
+ rijndal_cbc.nid = NID_undef;
+ rijndal_cbc.block_size = RIJNDAEL_BLOCKSIZE;
+ rijndal_cbc.iv_len = RIJNDAEL_BLOCKSIZE;
+ rijndal_cbc.key_len = 16;
+ rijndal_cbc.init = ssh_rijndael_init;
+ rijndal_cbc.cleanup = ssh_rijndael_cleanup;
+ rijndal_cbc.do_cipher = ssh_rijndael_cbc;
+#ifndef SSH_OLD_EVP
+ rijndal_cbc.flags = EVP_CIPH_CBC_MODE | EVP_CIPH_VARIABLE_LENGTH |
+ EVP_CIPH_ALWAYS_CALL_INIT;
+#endif
+ return (&rijndal_cbc);