aa906e2a49
This merges upstream patches from OpenSSL's master branch to add KTLS infrastructure for TLS 1.0-1.3 including both RX and TX offload and SSL_sendfile support on both Linux and FreeBSD. Note that TLS 1.3 only supports TX offload. A new WITH/WITHOUT_OPENSSL_KTLS determines if OpenSSL is built with KTLS support. It defaults to enabled on amd64 and disabled on all other architectures. Reviewed by: jkim (earlier version) Approved by: secteam Obtained from: OpenSSL (patches from master) MFC after: 1 week Relnotes: yes Sponsored by: Netflix Differential Revision: https://reviews.freebsd.org/D28273
222 lines
7.3 KiB
C
222 lines
7.3 KiB
C
/*
|
|
* Copyright 2018-2020 The OpenSSL Project Authors. All Rights Reserved.
|
|
*
|
|
* Licensed under the Apache License 2.0 (the "License"). You may not use
|
|
* this file except in compliance with the License. You can obtain a copy
|
|
* in the file LICENSE in the source distribution or at
|
|
* https://www.openssl.org/source/license.html
|
|
*/
|
|
|
|
#include "ssl_local.h"
|
|
#include "internal/ktls.h"
|
|
|
|
#if defined(__FreeBSD__)
|
|
# include <crypto/cryptodev.h>
|
|
|
|
/*-
|
|
* Check if a given cipher is supported by the KTLS interface.
|
|
* The kernel might still fail the setsockopt() if no suitable
|
|
* provider is found, but this checks if the socket option
|
|
* supports the cipher suite used at all.
|
|
*/
|
|
int ktls_check_supported_cipher(const SSL *s, const EVP_CIPHER *c,
|
|
const EVP_CIPHER_CTX *dd)
|
|
{
|
|
|
|
switch (s->version) {
|
|
case TLS1_VERSION:
|
|
case TLS1_1_VERSION:
|
|
case TLS1_2_VERSION:
|
|
case TLS1_3_VERSION:
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
switch (s->s3->tmp.new_cipher->algorithm_enc) {
|
|
case SSL_AES128GCM:
|
|
case SSL_AES256GCM:
|
|
return 1;
|
|
case SSL_AES128:
|
|
case SSL_AES256:
|
|
if (s->ext.use_etm)
|
|
return 0;
|
|
switch (s->s3->tmp.new_cipher->algorithm_mac) {
|
|
case SSL_SHA1:
|
|
case SSL_SHA256:
|
|
case SSL_SHA384:
|
|
return 1;
|
|
default:
|
|
return 0;
|
|
}
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* Function to configure kernel TLS structure */
|
|
int ktls_configure_crypto(const SSL *s, const EVP_CIPHER *c, EVP_CIPHER_CTX *dd,
|
|
void *rl_sequence, ktls_crypto_info_t *crypto_info,
|
|
unsigned char **rec_seq, unsigned char *iv,
|
|
unsigned char *key, unsigned char *mac_key,
|
|
size_t mac_secret_size)
|
|
{
|
|
memset(crypto_info, 0, sizeof(*crypto_info));
|
|
switch (s->s3->tmp.new_cipher->algorithm_enc) {
|
|
case SSL_AES128GCM:
|
|
case SSL_AES256GCM:
|
|
crypto_info->cipher_algorithm = CRYPTO_AES_NIST_GCM_16;
|
|
if (s->version == TLS1_3_VERSION)
|
|
crypto_info->iv_len = EVP_CIPHER_CTX_iv_length(dd);
|
|
else
|
|
crypto_info->iv_len = EVP_GCM_TLS_FIXED_IV_LEN;
|
|
break;
|
|
case SSL_AES128:
|
|
case SSL_AES256:
|
|
switch (s->s3->tmp.new_cipher->algorithm_mac) {
|
|
case SSL_SHA1:
|
|
crypto_info->auth_algorithm = CRYPTO_SHA1_HMAC;
|
|
break;
|
|
case SSL_SHA256:
|
|
crypto_info->auth_algorithm = CRYPTO_SHA2_256_HMAC;
|
|
break;
|
|
case SSL_SHA384:
|
|
crypto_info->auth_algorithm = CRYPTO_SHA2_384_HMAC;
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
crypto_info->cipher_algorithm = CRYPTO_AES_CBC;
|
|
crypto_info->iv_len = EVP_CIPHER_iv_length(c);
|
|
crypto_info->auth_key = mac_key;
|
|
crypto_info->auth_key_len = mac_secret_size;
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
crypto_info->cipher_key = key;
|
|
crypto_info->cipher_key_len = EVP_CIPHER_key_length(c);
|
|
crypto_info->iv = iv;
|
|
crypto_info->tls_vmajor = (s->version >> 8) & 0x000000ff;
|
|
crypto_info->tls_vminor = (s->version & 0x000000ff);
|
|
# ifdef TCP_RXTLS_ENABLE
|
|
memcpy(crypto_info->rec_seq, rl_sequence, sizeof(crypto_info->rec_seq));
|
|
if (rec_seq != NULL)
|
|
*rec_seq = crypto_info->rec_seq;
|
|
# else
|
|
if (rec_seq != NULL)
|
|
*rec_seq = NULL;
|
|
# endif
|
|
return 1;
|
|
};
|
|
|
|
#endif /* __FreeBSD__ */
|
|
|
|
#if defined(OPENSSL_SYS_LINUX)
|
|
|
|
/* Function to check supported ciphers in Linux */
|
|
int ktls_check_supported_cipher(const SSL *s, const EVP_CIPHER *c,
|
|
const EVP_CIPHER_CTX *dd)
|
|
{
|
|
switch (s->version) {
|
|
case TLS1_2_VERSION:
|
|
case TLS1_3_VERSION:
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
/* check that cipher is AES_GCM_128, AES_GCM_256, AES_CCM_128 */
|
|
switch (EVP_CIPHER_nid(c))
|
|
{
|
|
# ifdef OPENSSL_KTLS_AES_CCM_128
|
|
case NID_aes_128_ccm:
|
|
if (EVP_CIPHER_CTX_tag_length(dd) != EVP_CCM_TLS_TAG_LEN)
|
|
return 0;
|
|
# endif
|
|
# ifdef OPENSSL_KTLS_AES_GCM_128
|
|
case NID_aes_128_gcm:
|
|
# endif
|
|
# ifdef OPENSSL_KTLS_AES_GCM_256
|
|
case NID_aes_256_gcm:
|
|
# endif
|
|
return 1;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* Function to configure kernel TLS structure */
|
|
int ktls_configure_crypto(const SSL *s, const EVP_CIPHER *c, EVP_CIPHER_CTX *dd,
|
|
void *rl_sequence, ktls_crypto_info_t *crypto_info,
|
|
unsigned char **rec_seq, unsigned char *iv,
|
|
unsigned char *key, unsigned char *mac_key,
|
|
size_t mac_secret_size)
|
|
{
|
|
unsigned char geniv[12];
|
|
unsigned char *iiv = iv;
|
|
|
|
if (s->version == TLS1_2_VERSION &&
|
|
EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE) {
|
|
EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_GET_IV,
|
|
EVP_GCM_TLS_FIXED_IV_LEN + EVP_GCM_TLS_EXPLICIT_IV_LEN,
|
|
geniv);
|
|
iiv = geniv;
|
|
}
|
|
|
|
memset(crypto_info, 0, sizeof(*crypto_info));
|
|
switch (EVP_CIPHER_nid(c))
|
|
{
|
|
# ifdef OPENSSL_KTLS_AES_GCM_128
|
|
case NID_aes_128_gcm:
|
|
crypto_info->gcm128.info.cipher_type = TLS_CIPHER_AES_GCM_128;
|
|
crypto_info->gcm128.info.version = s->version;
|
|
crypto_info->tls_crypto_info_len = sizeof(crypto_info->gcm128);
|
|
memcpy(crypto_info->gcm128.iv, iiv + EVP_GCM_TLS_FIXED_IV_LEN,
|
|
TLS_CIPHER_AES_GCM_128_IV_SIZE);
|
|
memcpy(crypto_info->gcm128.salt, iiv, TLS_CIPHER_AES_GCM_128_SALT_SIZE);
|
|
memcpy(crypto_info->gcm128.key, key, EVP_CIPHER_key_length(c));
|
|
memcpy(crypto_info->gcm128.rec_seq, rl_sequence,
|
|
TLS_CIPHER_AES_GCM_128_REC_SEQ_SIZE);
|
|
if (rec_seq != NULL)
|
|
*rec_seq = crypto_info->gcm128.rec_seq;
|
|
return 1;
|
|
# endif
|
|
# ifdef OPENSSL_KTLS_AES_GCM_256
|
|
case NID_aes_256_gcm:
|
|
crypto_info->gcm256.info.cipher_type = TLS_CIPHER_AES_GCM_256;
|
|
crypto_info->gcm256.info.version = s->version;
|
|
crypto_info->tls_crypto_info_len = sizeof(crypto_info->gcm256);
|
|
memcpy(crypto_info->gcm256.iv, iiv + EVP_GCM_TLS_FIXED_IV_LEN,
|
|
TLS_CIPHER_AES_GCM_256_IV_SIZE);
|
|
memcpy(crypto_info->gcm256.salt, iiv, TLS_CIPHER_AES_GCM_256_SALT_SIZE);
|
|
memcpy(crypto_info->gcm256.key, key, EVP_CIPHER_key_length(c));
|
|
memcpy(crypto_info->gcm256.rec_seq, rl_sequence,
|
|
TLS_CIPHER_AES_GCM_256_REC_SEQ_SIZE);
|
|
if (rec_seq != NULL)
|
|
*rec_seq = crypto_info->gcm256.rec_seq;
|
|
return 1;
|
|
# endif
|
|
# ifdef OPENSSL_KTLS_AES_CCM_128
|
|
case NID_aes_128_ccm:
|
|
crypto_info->ccm128.info.cipher_type = TLS_CIPHER_AES_CCM_128;
|
|
crypto_info->ccm128.info.version = s->version;
|
|
crypto_info->tls_crypto_info_len = sizeof(crypto_info->ccm128);
|
|
memcpy(crypto_info->ccm128.iv, iiv + EVP_CCM_TLS_FIXED_IV_LEN,
|
|
TLS_CIPHER_AES_CCM_128_IV_SIZE);
|
|
memcpy(crypto_info->ccm128.salt, iiv, TLS_CIPHER_AES_CCM_128_SALT_SIZE);
|
|
memcpy(crypto_info->ccm128.key, key, EVP_CIPHER_key_length(c));
|
|
memcpy(crypto_info->ccm128.rec_seq, rl_sequence,
|
|
TLS_CIPHER_AES_CCM_128_REC_SEQ_SIZE);
|
|
if (rec_seq != NULL)
|
|
*rec_seq = crypto_info->ccm128.rec_seq;
|
|
return 1;
|
|
# endif
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
}
|
|
|
|
#endif /* OPENSSL_SYS_LINUX */
|