const SSL_CIPHER *dtls1_get_cipher(size_t i) {
const SSL_CIPHER *ciph = ssl3_get_cipher(i);
/* DTLS does not support stream ciphers. */
if (ciph == NULL || ciph->algorithm_enc == SSL_RC4) {
return NULL;
}
return ciph;
}
/*
* As it's impossible to use stream ciphers in "datagram" mode, this
* simple filter is designed to disengage them in DTLS. Unfortunately
* there is no universal way to identify stream SSL_CIPHER, so we have
* to explicitly list their SSL_* codes. Currently RC4 is the only one
* available, but if new ones emerge, they will have to be added...
*/
const SSL_CIPHER *dtls1_get_cipher(unsigned int u)
{
const SSL_CIPHER *ciph = ssl3_get_cipher(u);
if (ciph != NULL) {
if (ciph->algorithm_enc == SSL_RC4)
return NULL;
}
return ciph;
}
/*
* As it's impossible to use stream ciphers in "datagram" mode, this
* simple filter is designed to disengage them in DTLS. Unfortunately
* there is no universal way to identify stream SSL_CIPHER, so we have
* to explicitly list their SSL_* codes. Currently RC4 is the only one
* available, but if new ones emerge, they will have to be added...
*/
SSL_CIPHER *dtls1_get_cipher(unsigned int u)
{
SSL_CIPHER *ciph = ssl3_get_cipher(u);
if (ciph != NULL) {
if ((ciph->algorithms & SSL_ENC_MASK) == SSL_RC4)
return NULL;
}
return ciph;
}
SSL_CIPHER *ssl23_get_cipher(unsigned int u)
{
unsigned int uu=ssl3_num_ciphers();
if (u < uu)
return(ssl3_get_cipher(u));
else
#ifndef OPENSSL_NO_SSL2
return(ssl2_get_cipher(u-uu));
#else
return(NULL);
#endif
}