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OpenSSL: Allow anon-DH cipher suites to be added for TEAP

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Add a new TLS_CONN_* flag to provide a higher level mechanism for adding
(instead of fully replacing) allowed list of TLS ciphersuites for TEAP
provisioning purposes.

Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2019-07-09 16:37:19 +03:00
parent 94714ec341
commit 3ec65a8e38
2 changed files with 32 additions and 0 deletions
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1
src/crypto/tls.h
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@ -111,6 +111,7 @@ struct tls_config {
#define TLS_CONN_ENABLE_TLSv1_0 BIT(14)
#define TLS_CONN_ENABLE_TLSv1_1 BIT(15)
#define TLS_CONN_ENABLE_TLSv1_2 BIT(16)
#define TLS_CONN_TEAP_ANON_DH BIT(17)
/**
* struct tls_connection_params - Parameters for TLS connection

31
src/crypto/tls_openssl.c
View file

@ -3079,6 +3079,37 @@ static int tls_set_conn_flags(struct tls_connection *conn, unsigned int flags,
}
#endif /* CONFIG_SUITEB */
if (flags & TLS_CONN_TEAP_ANON_DH) {
#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)
#ifndef TEAP_DH_ANON_CS
#define TEAP_DH_ANON_CS \
"ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:" \
"ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA256:" \
"ECDHE-RSA-AES256-SHA:ECDHE-RSA-AES128-SHA:" \
"DHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:" \
"DHE-RSA-AES256-SHA256:DHE-RSA-AES128-SHA256:" \
"DHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA:" \
"ADH-AES256-GCM-SHA384:ADH-AES128-GCM-SHA256:" \
"ADH-AES256-SHA256:ADH-AES128-SHA256:ADH-AES256-SHA:ADH-AES128-SHA"
#endif
static const char *cs = TEAP_DH_ANON_CS;
/*
* Need to drop to security level 0 to allow anonymous
* cipher suites for EAP-TEAP.
*/
SSL_set_security_level(conn->ssl, 0);
#endif
wpa_printf(MSG_DEBUG,
"OpenSSL: Enable cipher suites for anonymous EAP-TEAP provisioning: %s",
cs);
if (SSL_set_cipher_list(conn->ssl, cs) != 1) {
tls_show_errors(MSG_INFO, __func__,
"Cipher suite configuration failed");
return -1;
}
}
return 0;
}