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PSK callback added to SSL server

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This commit is contained in:
Paul Bakker 2013-09-18 17:29:31 +02:00
parent ff29f9c825
commit 6db455e6e3
5 changed files with 113 additions and 24 deletions
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45
include/polarssl/ssl.h
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@ -126,6 +126,7 @@
#define POLARSSL_ERR_SSL_BAD_HS_NEW_SESSION_TICKET -0x6E00 /**< Processing of the NewSessionTicket handshake message failed. */
#define POLARSSL_ERR_SSL_SESSION_TICKET_EXPIRED -0x6D80 /**< Session ticket has expired. */
#define POLARSSL_ERR_SSL_PK_TYPE_MISMATCH -0x6D00 /**< Public key type mismatch (eg, asked for RSA key exchange and presented EC key) */
#define POLARSSL_ERR_SSL_UNKNOWN_IDENTITY -0x6C80 /**< Unkown identity received (eg, PSK identity) */
/*
* Various constants
@ -588,6 +589,11 @@ struct _ssl_context
void *p_vrfy; /*!< context for verification */
#endif
#if defined(POLARSSL_KEY_EXCHANGE_PSK_ENABLED)
int (*f_psk)(void *, ssl_context *, const unsigned char *, size_t);
void *p_psk; /*!< context for PSK retrieval */
#endif
/*
* Session layer
*/
@ -689,9 +695,9 @@ struct _ssl_context
/*
* PSK values
*/
const unsigned char *psk;
unsigned char *psk;
size_t psk_len;
const unsigned char *psk_identity;
unsigned char *psk_identity;
size_t psk_identity_len;
#endif
@ -1022,16 +1028,43 @@ int ssl_set_own_cert_alt( ssl_context *ssl, x509_crt *own_cert,
#if defined(POLARSSL_KEY_EXCHANGE_PSK_ENABLED)
/**
* \brief Set the Pre Shared Key (PSK) and the identity name connected
* to it. The PSK is used in all PSK-based ciphersuites.
* to it.
*
* \param ssl SSL context
* \param psk pointer to the pre-shared key
* \param psk_len pre-shared key length
* \param psk_identity pointer to the pre-shared key identity
* \param psk_identity_len identity key length
*
* \return 0 if successful or POLARSSL_ERR_SSL_MALLOC_FAILED
*/
void ssl_set_psk( ssl_context *ssl, const unsigned char *psk, size_t psk_len,
const unsigned char *psk_identity, size_t psk_identity_len );
int ssl_set_psk( ssl_context *ssl, const unsigned char *psk, size_t psk_len,
const unsigned char *psk_identity, size_t psk_identity_len );
/**
* \brief Set the PSK callback (server-side only) (Optional).
*
* If set, the PSK callback is called for each
* handshake where a PSK ciphersuite was negotiated.
* The callback provides the identity received and wants to
* receive the actual PSK data and length.
*
* The callback has the following parameters: (void *parameter,
* ssl_context *ssl, const unsigned char *psk_identity,
* size_t identity_len)
* If a valid PSK identity is found, the callback should use
* ssl_set_psk() on the ssl context to set the correct PSK and
* identity and return 0.
* Any other return value will result in a denied PSK identity.
*
* \param ssl SSL context
* \param f_psk PSK identity function
* \param p_psk PSK identity parameter
*/
void ssl_set_psk_cb( ssl_context *ssl,
int (*f_psk)(void *, ssl_context *, const unsigned char *,
size_t),
void *p_psk );
#endif /* POLARSSL_KEY_EXCHANGE_PSK_ENABLED */
#if defined(POLARSSL_DHM_C)
@ -1064,7 +1097,7 @@ int ssl_set_dh_param_ctx( ssl_context *ssl, dhm_context *dhm_ctx );
/**
* \brief Set hostname for ServerName TLS extension
* (client-side only)
*
*
*
* \param ssl SSL context
* \param hostname the server hostname