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Add ssl_set_hs_ca_chain()

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Manuel Pégourié-Gonnard 2015-05-11 08:46:37 +02:00
parent 1897af9e93
commit 22bfa4bb53
3 changed files with 58 additions and 11 deletions
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39
include/mbedtls/ssl.h
View file

@ -680,6 +680,8 @@ struct mbedtls_ssl_handshake_params
mbedtls_ssl_key_cert *key_cert; /*!< chosen key/cert pair (server) */
#if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
mbedtls_ssl_key_cert *sni_key_cert; /*!< key/cert list from SNI */
mbedtls_x509_crt *sni_ca_chain; /*!< trusted CAs from SNI callback */
mbedtls_x509_crl *sni_ca_crl; /*!< trusted CAs CRLs from SNI */
#endif
#endif /* MBEDTLS_X509_CRT_PARSE_C */
#if defined(MBEDTLS_SSL_PROTO_DTLS)
@ -1562,10 +1564,15 @@ void mbedtls_ssl_set_ca_chain( mbedtls_ssl_config *conf,
* certificate chain. The top certificate (self-signed)
* can be omitted.
*
* \note This function may be called more than once if you want to
* support multiple certificates (eg, one using RSA and one
* using ECDSA). However, on client, currently only the first
* certificate is used (subsequent calls have no effect).
* \note On server, this function can be called multiple times to
* provision more than one cert/key pair (eg one ECDSA, one
* RSA with SHA-256, one RSA with SHA-1). An adequate
* certificate will be selected according to the client's
* advertised capabilities. In case mutliple certificates are
* adequate, preference is given to the one set by the first
* call to this function, then second, etc.
*
* \note On client, only the first call has any effect.
*
* \param conf SSL configuration
* \param own_cert own public certificate chain
@ -1722,6 +1729,21 @@ int mbedtls_ssl_set_hs_own_cert( mbedtls_ssl_context *ssl,
mbedtls_x509_crt *own_cert,
mbedtls_pk_context *pk_key );
/**
* \brief Set the data required to verify peer certificate for the
* current handshake
*
* \note Same as \c mbedtls_ssl_set_ca_chain() but for use within
* the SNI callback.
*
* \param ssl SSL context
* \param ca_chain trusted CA chain (meaning all fully trusted top-level CAs)
* \param ca_crl trusted CA CRLs
*/
void mbedtls_ssl_set_hs_ca_chain( mbedtls_ssl_context *ssl,
mbedtls_x509_crt *ca_chain,
mbedtls_x509_crl *ca_crl );
/**
* \brief Set server side ServerName TLS extension callback
* (optional, server-side only).
@ -1732,10 +1754,11 @@ int mbedtls_ssl_set_hs_own_cert( mbedtls_ssl_context *ssl,
* following parameters: (void *parameter, mbedtls_ssl_context *ssl,
* const unsigned char *hostname, size_t len). If a suitable
* certificate is found, the callback should set the
* certificate and key to use with mbedtls_ssl_set_hs_own_cert() (and
* possibly adjust the CA chain as well TODO: broken) and return 0. The
* callback should return -1 to abort the handshake at this
* point.
* certificate(s) and key(s) to use with \c
* mbedtls_ssl_set_hs_own_cert() (can be called repeatedly),
* and optionally adjust the CA with \c
* mbedtls_ssl_set_hs_ca_chain() and return 0. The callback
* should return -1 to abort the handshake at this point.
*
* \param conf SSL configuration
* \param f_sni verification function

4
library/ssl_srv.c
View file

@ -2725,7 +2725,9 @@ static int ssl_write_certificate_request( mbedtls_ssl_context *ssl )
* opaque DistinguishedName<1..2^16-1>;
*/
p += 2;
crt = ssl->conf->ca_chain;
crt = ssl->handshake->sni_ca_chain != NULL ?
ssl->handshake->sni_ca_chain :
ssl->conf->ca_chain;
total_dn_size = 0;
while( crt != NULL && crt->version != 0 )

26
library/ssl_tls.c
View file

@ -4029,7 +4029,21 @@ int mbedtls_ssl_parse_certificate( mbedtls_ssl_context *ssl )
if( ssl->conf->authmode != MBEDTLS_SSL_VERIFY_NONE )
{
if( ssl->conf->ca_chain == NULL )
mbedtls_x509_crt *ca_chain;
mbedtls_x509_crl *ca_crl;
if( ssl->handshake->sni_ca_chain != NULL )
{
ca_chain = ssl->handshake->sni_ca_chain;
ca_crl = ssl->handshake->sni_ca_crl;
}
else
{
ca_chain = ssl->conf->ca_chain;
ca_crl = ssl->conf->ca_crl;
}
if( ca_chain == NULL )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "got no CA chain" ) );
return( MBEDTLS_ERR_SSL_CA_CHAIN_REQUIRED );
@ -4039,7 +4053,7 @@ int mbedtls_ssl_parse_certificate( mbedtls_ssl_context *ssl )
* Main check: verify certificate
*/
ret = mbedtls_x509_crt_verify( ssl->session_negotiate->peer_cert,
ssl->conf->ca_chain, ssl->conf->ca_crl, ssl->hostname,
ca_chain, ca_crl, ssl->hostname,
&ssl->session_negotiate->verify_result,
ssl->conf->f_vrfy, ssl->conf->p_vrfy );
@ -5360,6 +5374,14 @@ int mbedtls_ssl_set_hs_own_cert( mbedtls_ssl_context *ssl,
return( ssl_append_key_cert( &ssl->handshake->sni_key_cert,
own_cert, pk_key ) );
}
void mbedtls_ssl_set_hs_ca_chain( mbedtls_ssl_context *ssl,
mbedtls_x509_crt *ca_chain,
mbedtls_x509_crl *ca_crl )
{
ssl->handshake->sni_ca_chain = ca_chain;
ssl->handshake->sni_ca_crl = ca_crl;
}
#endif /* MBEDTLS_SSL_SERVER_NAME_INDICATION */
#if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED)