/*
- * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2015-2018 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
/* The spec allows for a longer length than this, but we limit it */
#define HELLO_VERIFY_REQUEST_MAX_LENGTH 258
+#define END_OF_EARLY_DATA_MAX_LENGTH 0
#define SERVER_HELLO_MAX_LENGTH 20000
+#define HELLO_RETRY_REQUEST_MAX_LENGTH 20000
#define ENCRYPTED_EXTENSIONS_MAX_LENGTH 20000
#define SERVER_KEY_EXCH_MAX_LENGTH 102400
#define SERVER_HELLO_DONE_MAX_LENGTH 0
+#define KEY_UPDATE_MAX_LENGTH 1
#define CCS_MAX_LENGTH 1
/* Max should actually be 36 but we are generous */
#define FINISHED_MAX_LENGTH 64
-/* Extension context codes */
-#define EXT_TLS_ONLY 0x0001
-#define EXT_DTLS_ONLY 0x0002
-/* Some extensions may be allowed in DTLS but we don't implement them for it */
-#define EXT_TLS_IMPLEMENTATION_ONLY 0x0004
-/* Most extensions are not defined for SSLv3 but EXT_TYPE_renegotiate is */
-#define EXT_SSL3_ALLOWED 0x0008
-#define EXT_TLS1_2_AND_BELOW_ONLY 0x0010
-#define EXT_TLS1_3_ONLY 0x0020
-#define EXT_CLIENT_HELLO 0x0040
-/* Really means TLS1.2 or below */
-#define EXT_TLS1_2_SERVER_HELLO 0x0080
-#define EXT_TLS1_3_SERVER_HELLO 0x0100
-#define EXT_TLS1_3_ENCRYPTED_EXTENSIONS 0x0200
-#define EXT_TLS1_3_HELLO_RETRY_REQUEST 0x0400
-#define EXT_TLS1_3_CERTIFICATE 0x0800
-#define EXT_TLS1_3_NEW_SESSION_TICKET 0x1000
+/* The maximum number of incoming KeyUpdate messages we will accept */
+#define MAX_KEY_UPDATE_MESSAGES 32
+
+/* Dummy message type */
+#define SSL3_MT_DUMMY -1
+
+extern const unsigned char hrrrandom[];
/* Message processing return codes */
typedef enum {
MSG_PROCESS_CONTINUE_READING
} MSG_PROCESS_RETURN;
-/* Flush the write BIO */
-int statem_flush(SSL *s);
-
typedef int (*confunc_f) (SSL *s, WPACKET *pkt);
+int ssl3_take_mac(SSL *s);
+int check_in_list(SSL *s, uint16_t group_id, const uint16_t *groups,
+ size_t num_groups, int checkallow);
+int create_synthetic_message_hash(SSL *s, const unsigned char *hashval,
+ size_t hashlen, const unsigned char *hrr,
+ size_t hrrlen);
+int parse_ca_names(SSL *s, PACKET *pkt);
+int construct_ca_names(SSL *s, WPACKET *pkt);
+size_t construct_key_exchange_tbs(SSL *s, unsigned char **ptbs,
+ const void *param, size_t paramlen);
+
/*
* TLS/DTLS client state machine functions
*/
__owur int dtls_get_message(SSL *s, int *mt, size_t *len);
/* Message construction and processing functions */
-__owur int tls_process_initial_server_flight(SSL *s, int *al);
+__owur int tls_process_initial_server_flight(SSL *s);
__owur MSG_PROCESS_RETURN tls_process_change_cipher_spec(SSL *s, PACKET *pkt);
__owur MSG_PROCESS_RETURN tls_process_finished(SSL *s, PACKET *pkt);
__owur int tls_construct_change_cipher_spec(SSL *s, WPACKET *pkt);
__owur int dtls_construct_change_cipher_spec(SSL *s, WPACKET *pkt);
__owur int tls_construct_finished(SSL *s, WPACKET *pkt);
-__owur WORK_STATE tls_finish_handshake(SSL *s, WORK_STATE wst);
+__owur int tls_construct_key_update(SSL *s, WPACKET *pkt);
+__owur MSG_PROCESS_RETURN tls_process_key_update(SSL *s, PACKET *pkt);
+__owur WORK_STATE tls_finish_handshake(SSL *s, WORK_STATE wst, int clearbufs,
+ int stop);
__owur WORK_STATE dtls_wait_for_dry(SSL *s);
-int tls_collect_extensions(SSL *s, PACKET *packet, unsigned int context,
- RAW_EXTENSION **res, size_t *numfound, int *ad);
-
/* some client-only functions */
__owur int tls_construct_client_hello(SSL *s, WPACKET *pkt);
__owur MSG_PROCESS_RETURN tls_process_server_hello(SSL *s, PACKET *pkt);
__owur MSG_PROCESS_RETURN tls_process_certificate_request(SSL *s, PACKET *pkt);
__owur MSG_PROCESS_RETURN tls_process_new_session_ticket(SSL *s, PACKET *pkt);
+__owur int tls_process_cert_status_body(SSL *s, PACKET *pkt);
__owur MSG_PROCESS_RETURN tls_process_cert_status(SSL *s, PACKET *pkt);
__owur MSG_PROCESS_RETURN tls_process_server_done(SSL *s, PACKET *pkt);
-__owur int tls_construct_client_verify(SSL *s, WPACKET *pkt);
+__owur int tls_construct_cert_verify(SSL *s, WPACKET *pkt);
__owur WORK_STATE tls_prepare_client_certificate(SSL *s, WORK_STATE wst);
__owur int tls_construct_client_certificate(SSL *s, WPACKET *pkt);
__owur int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey);
__owur int tls_construct_client_key_exchange(SSL *s, WPACKET *pkt);
__owur int tls_client_key_exchange_post_work(SSL *s);
+__owur int tls_construct_cert_status_body(SSL *s, WPACKET *pkt);
__owur int tls_construct_cert_status(SSL *s, WPACKET *pkt);
__owur MSG_PROCESS_RETURN tls_process_key_exchange(SSL *s, PACKET *pkt);
__owur MSG_PROCESS_RETURN tls_process_server_certificate(SSL *s, PACKET *pkt);
#ifndef OPENSSL_NO_NEXTPROTONEG
__owur int tls_construct_next_proto(SSL *s, WPACKET *pkt);
#endif
+__owur MSG_PROCESS_RETURN tls_process_hello_req(SSL *s, PACKET *pkt);
__owur MSG_PROCESS_RETURN dtls_process_hello_verify(SSL *s, PACKET *pkt);
+__owur int tls_construct_end_of_early_data(SSL *s, WPACKET *pkt);
/* some server-only functions */
__owur MSG_PROCESS_RETURN tls_process_client_hello(SSL *s, PACKET *pkt);
__owur MSG_PROCESS_RETURN tls_process_next_proto(SSL *s, PACKET *pkt);
#endif
__owur int tls_construct_new_session_ticket(SSL *s, WPACKET *pkt);
+MSG_PROCESS_RETURN tls_process_end_of_early_data(SSL *s, PACKET *pkt);
+
+/* Extension processing */
+
+typedef enum ext_return_en {
+ EXT_RETURN_FAIL,
+ EXT_RETURN_SENT,
+ EXT_RETURN_NOT_SENT
+} EXT_RETURN;
+
+__owur int tls_validate_all_contexts(SSL *s, unsigned int thisctx,
+ RAW_EXTENSION *exts);
+__owur int extension_is_relevant(SSL *s, unsigned int extctx,
+ unsigned int thisctx);
+__owur int tls_collect_extensions(SSL *s, PACKET *packet, unsigned int context,
+ RAW_EXTENSION **res, size_t *len, int init);
+__owur int tls_parse_extension(SSL *s, TLSEXT_INDEX idx, int context,
+ RAW_EXTENSION *exts, X509 *x, size_t chainidx);
__owur int tls_parse_all_extensions(SSL *s, int context, RAW_EXTENSION *exts,
- size_t numexts, int *al);
-__owur int tls_parse_extension(SSL *s, int type, int context, RAW_EXTENSION *exts,
- size_t numexts, int *al);
+ X509 *x, size_t chainidx, int fin);
+__owur int should_add_extension(SSL *s, unsigned int extctx,
+ unsigned int thisctx, int max_version);
__owur int tls_construct_extensions(SSL *s, WPACKET *pkt, unsigned int context,
- int *al);
+ X509 *x, size_t chainidx);
+
+__owur int tls_psk_do_binder(SSL *s, const EVP_MD *md,
+ const unsigned char *msgstart,
+ size_t binderoffset, const unsigned char *binderin,
+ unsigned char *binderout,
+ SSL_SESSION *sess, int sign, int external);
/* Server Extension processing */
-int tls_parse_clienthello_renegotiate(SSL *s, PACKET *pkt, int *al);
-int tls_parse_clienthello_server_name(SSL *s, PACKET *pkt, int *al);
+int tls_parse_ctos_renegotiate(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+int tls_parse_ctos_server_name(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+int tls_parse_ctos_maxfragmentlen(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
#ifndef OPENSSL_NO_SRP
-int tls_parse_clienthello_srp(SSL *s, PACKET *pkt, int *al);
+int tls_parse_ctos_srp(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx);
#endif
+int tls_parse_ctos_early_data(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
#ifndef OPENSSL_NO_EC
-int tls_parse_clienthello_ec_pt_formats(SSL *s, PACKET *pkt, int *al);
-int tls_parse_clienthello_supported_groups(SSL *s, PACKET *pkt, int *al);
+int tls_parse_ctos_ec_pt_formats(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+int tls_parse_ctos_supported_groups(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidxl);
+#endif
+int tls_parse_ctos_session_ticket(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+int tls_parse_ctos_sig_algs_cert(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+int tls_parse_ctos_sig_algs(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx);
+#ifndef OPENSSL_NO_OCSP
+int tls_parse_ctos_status_request(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
#endif
-int tls_parse_clienthello_session_ticket(SSL *s, PACKET *pkt, int *al);
-int tls_parse_clienthello_sig_algs(SSL *s, PACKET *pkt, int *al);
-int tls_parse_clienthello_status_request(SSL *s, PACKET *pkt, int *al);
#ifndef OPENSSL_NO_NEXTPROTONEG
-int tls_parse_clienthello_npn(SSL *s, PACKET *pkt, int *al);
+int tls_parse_ctos_npn(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx);
#endif
-int tls_parse_clienthello_alpn(SSL *s, PACKET *pkt, int *al);
+int tls_parse_ctos_alpn(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx);
#ifndef OPENSSL_NO_SRTP
-int tls_parse_clienthello_use_srtp(SSL *s, PACKET *pkt, int *al);
-#endif
-int tls_parse_clienthello_etm(SSL *s, PACKET *pkt, int *al);
-int tls_parse_clienthello_key_share(SSL *s, PACKET *pkt, int *al);
-int tls_parse_clienthello_ems(SSL *s, PACKET *pkt, int *al);
-
-int tls_construct_server_renegotiate(SSL *s, WPACKET *pkt, int *al);
-int tls_construct_server_server_name(SSL *s, WPACKET *pkt, int *al);
-int tls_construct_server_ec_pt_formats(SSL *s, WPACKET *pkt, int *al);
-int tls_construct_server_session_ticket(SSL *s, WPACKET *pkt, int *al);
-int tls_construct_server_status_request(SSL *s, WPACKET *pkt, int *al);
-int tls_construct_server_next_proto_neg(SSL *s, WPACKET *pkt, int *al);
-int tls_construct_server_alpn(SSL *s, WPACKET *pkt, int *al);
-int tls_construct_server_use_srtp(SSL *s, WPACKET *pkt, int *al);
-int tls_construct_server_etm(SSL *s, WPACKET *pkt, int *al);
-int tls_construct_server_ems(SSL *s, WPACKET *pkt, int *al);
-int tls_construct_server_key_share(SSL *s, WPACKET *pkt, int *al);
+int tls_parse_ctos_use_srtp(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx);
+#endif
+int tls_parse_ctos_etm(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx);
+int tls_parse_ctos_key_share(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx);
+int tls_parse_ctos_cookie(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx);
+int tls_parse_ctos_ems(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx);
+int tls_parse_ctos_psk_kex_modes(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+int tls_parse_ctos_psk(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx);
+int tls_parse_ctos_post_handshake_auth(SSL *, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+EXT_RETURN tls_construct_stoc_renegotiate(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx);
+EXT_RETURN tls_construct_stoc_server_name(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx);
+EXT_RETURN tls_construct_stoc_early_data(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx);
+EXT_RETURN tls_construct_stoc_maxfragmentlen(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx);
+#ifndef OPENSSL_NO_EC
+EXT_RETURN tls_construct_stoc_ec_pt_formats(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx);
+#endif
+EXT_RETURN tls_construct_stoc_supported_groups(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx);
+EXT_RETURN tls_construct_stoc_session_ticket(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx);
+#ifndef OPENSSL_NO_OCSP
+EXT_RETURN tls_construct_stoc_status_request(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx);
+#endif
+#ifndef OPENSSL_NO_NEXTPROTONEG
+EXT_RETURN tls_construct_stoc_next_proto_neg(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx);
+#endif
+EXT_RETURN tls_construct_stoc_alpn(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+#ifndef OPENSSL_NO_SRTP
+EXT_RETURN tls_construct_stoc_use_srtp(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+#endif
+EXT_RETURN tls_construct_stoc_etm(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+EXT_RETURN tls_construct_stoc_ems(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+EXT_RETURN tls_construct_stoc_supported_versions(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx);
+EXT_RETURN tls_construct_stoc_key_share(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx);
+EXT_RETURN tls_construct_stoc_cookie(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
/*
* Not in public headers as this is not an official extension. Only used when
* SSL_OP_CRYPTOPRO_TLSEXT_BUG is set.
*/
#define TLSEXT_TYPE_cryptopro_bug 0xfde8
-int tls_construct_server_cryptopro_bug(SSL *s, WPACKET *pkt, int *al);
+EXT_RETURN tls_construct_stoc_cryptopro_bug(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx);
+EXT_RETURN tls_construct_stoc_psk(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+
+/* Client Extension processing */
+EXT_RETURN tls_construct_ctos_renegotiate(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+EXT_RETURN tls_construct_ctos_server_name(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+EXT_RETURN tls_construct_ctos_maxfragmentlen(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+#ifndef OPENSSL_NO_SRP
+EXT_RETURN tls_construct_ctos_srp(SSL *s, WPACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx);
+#endif
+#ifndef OPENSSL_NO_EC
+EXT_RETURN tls_construct_ctos_ec_pt_formats(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx);
+EXT_RETURN tls_construct_ctos_supported_groups(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx);
+#endif
+EXT_RETURN tls_construct_ctos_early_data(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx);
+EXT_RETURN tls_construct_ctos_session_ticket(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx);
+EXT_RETURN tls_construct_ctos_sig_algs(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx);
+#ifndef OPENSSL_NO_OCSP
+EXT_RETURN tls_construct_ctos_status_request(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx);
+#endif
+#ifndef OPENSSL_NO_NEXTPROTONEG
+EXT_RETURN tls_construct_ctos_npn(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+#endif
+EXT_RETURN tls_construct_ctos_alpn(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+#ifndef OPENSSL_NO_SRTP
+EXT_RETURN tls_construct_ctos_use_srtp(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+#endif
+EXT_RETURN tls_construct_ctos_etm(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+#ifndef OPENSSL_NO_CT
+EXT_RETURN tls_construct_ctos_sct(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+#endif
+EXT_RETURN tls_construct_ctos_ems(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+EXT_RETURN tls_construct_ctos_supported_versions(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx);
+EXT_RETURN tls_construct_ctos_key_share(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx);
+EXT_RETURN tls_construct_ctos_psk_kex_modes(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx);
+EXT_RETURN tls_construct_ctos_cookie(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+EXT_RETURN tls_construct_ctos_padding(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx);
+EXT_RETURN tls_construct_ctos_psk(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+EXT_RETURN tls_construct_ctos_post_handshake_auth(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+
+int tls_parse_stoc_renegotiate(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+int tls_parse_stoc_server_name(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+int tls_parse_stoc_early_data(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+int tls_parse_stoc_maxfragmentlen(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+#ifndef OPENSSL_NO_EC
+int tls_parse_stoc_ec_pt_formats(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+#endif
+int tls_parse_stoc_session_ticket(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+#ifndef OPENSSL_NO_OCSP
+int tls_parse_stoc_status_request(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+#endif
+#ifndef OPENSSL_NO_CT
+int tls_parse_stoc_sct(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx);
+#endif
+#ifndef OPENSSL_NO_NEXTPROTONEG
+int tls_parse_stoc_npn(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx);
+#endif
+int tls_parse_stoc_alpn(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx);
+#ifndef OPENSSL_NO_SRTP
+int tls_parse_stoc_use_srtp(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx);
+#endif
+int tls_parse_stoc_etm(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx);
+int tls_parse_stoc_ems(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx);
+int tls_parse_stoc_supported_versions(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx);
+int tls_parse_stoc_key_share(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx);
+int tls_parse_stoc_cookie(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx);
+int tls_parse_stoc_psk(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx);
+
+int tls_handle_alpn(SSL *s);
+
+int tls13_save_handshake_digest_for_pha(SSL *s);
+int tls13_restore_handshake_digest_for_pha(SSL *s);
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