Hakase/nginx-quic
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Hakase
2023-06-21 11:18:12 +09:00
parent 3540d4f1fc
commit 5c63df95c0
7 changed files with 111 additions and 64 deletions
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src/core/nginx.h
+2 -2
View File
@@ -9,8 +9,8 @@
#define _NGINX_H_INCLUDED_ #define _NGINX_H_INCLUDED_
#define nginx_version 1025001 #define nginx_version 1025002
#define NGINX_VERSION "1.25.1" #define NGINX_VERSION "1.25.2"
#define NGINX_VER "nginx/" NGINX_VERSION " by Hakase" #define NGINX_VER "nginx/" NGINX_VERSION " by Hakase"
#ifndef NGINX_SERVER #ifndef NGINX_SERVER
src/event/quic/ngx_event_quic_openssl_compat.c
+3 -3
View File
@@ -445,7 +445,7 @@ SSL_provide_quic_data(SSL *ssl, enum ssl_encryption_level_t level,
u_char in[NGX_QUIC_COMPAT_RECORD_SIZE + 1]; u_char in[NGX_QUIC_COMPAT_RECORD_SIZE + 1];
u_char out[NGX_QUIC_COMPAT_RECORD_SIZE + 1 u_char out[NGX_QUIC_COMPAT_RECORD_SIZE + 1
+ SSL3_RT_HEADER_LENGTH + SSL3_RT_HEADER_LENGTH
+ EVP_GCM_TLS_TAG_LEN]; + NGX_QUIC_TAG_LEN];
c = ngx_ssl_get_connection(ssl); c = ngx_ssl_get_connection(ssl);
@@ -528,7 +528,7 @@ ngx_quic_compat_create_header(ngx_quic_compat_record_t *rec, u_char *out,
} else { } else {
type = SSL3_RT_APPLICATION_DATA; type = SSL3_RT_APPLICATION_DATA;
len += EVP_GCM_TLS_TAG_LEN; len += NGX_QUIC_TAG_LEN;
} }
out[0] = type; out[0] = type;
@@ -552,7 +552,7 @@ ngx_quic_compat_create_record(ngx_quic_compat_record_t *rec, ngx_str_t *res)
ad.data = res->data; ad.data = res->data;
ad.len = ngx_quic_compat_create_header(rec, ad.data, 0); ad.len = ngx_quic_compat_create_header(rec, ad.data, 0);
out.len = rec->payload.len + EVP_GCM_TLS_TAG_LEN; out.len = rec->payload.len + NGX_QUIC_TAG_LEN;
out.data = res->data + ad.len; out.data = res->data + ad.len;
#ifdef NGX_QUIC_DEBUG_CRYPTO #ifdef NGX_QUIC_DEBUG_CRYPTO
src/event/quic/ngx_event_quic_protection.c
+65 -38
View File
@@ -15,13 +15,6 @@
#define NGX_QUIC_AES_128_KEY_LEN 16 #define NGX_QUIC_AES_128_KEY_LEN 16
#ifndef TLS1_3_CK_AES_128_GCM_SHA256
#define TLS1_3_CK_AES_128_GCM_SHA256 0x03001301
#define TLS1_3_CK_AES_256_GCM_SHA384 0x03001302
#define TLS1_3_CK_CHACHA20_POLY1305_SHA256 \
0x03001303
#endif
static ngx_int_t ngx_hkdf_expand(u_char *out_key, size_t out_len, static ngx_int_t ngx_hkdf_expand(u_char *out_key, size_t out_len,
const EVP_MD *digest, const u_char *prk, size_t prk_len, const EVP_MD *digest, const u_char *prk, size_t prk_len,
@@ -94,6 +87,15 @@ ngx_quic_ciphers(ngx_uint_t id, ngx_quic_ciphers_t *ciphers,
len = 32; len = 32;
break; break;
#ifndef OPENSSL_IS_BORINGSSL
case TLS1_3_CK_AES_128_CCM_SHA256:
ciphers->c = EVP_aes_128_ccm();
ciphers->hp = EVP_aes_128_ctr();
ciphers->d = EVP_sha256();
len = 16;
break;
#endif
default: default:
return NGX_ERROR; return NGX_ERROR;
} }
@@ -343,8 +345,7 @@ failed:
static ngx_int_t static ngx_int_t
ngx_quic_tls_open(const ngx_quic_cipher_t *cipher, ngx_quic_secret_t *s, ngx_quic_tls_open(const ngx_quic_cipher_t *cipher, ngx_quic_secret_t *s,
ngx_str_t *out, u_char *nonce, ngx_str_t *in, ngx_str_t *ad, ngx_str_t *out, u_char *nonce, ngx_str_t *in, ngx_str_t *ad, ngx_log_t *log)
ngx_log_t *log)
{ {
#ifdef OPENSSL_IS_BORINGSSL #ifdef OPENSSL_IS_BORINGSSL
@@ -369,7 +370,6 @@ ngx_quic_tls_open(const ngx_quic_cipher_t *cipher, ngx_quic_secret_t *s,
EVP_AEAD_CTX_free(ctx); EVP_AEAD_CTX_free(ctx);
#else #else
int len; int len;
u_char *tag;
EVP_CIPHER_CTX *ctx; EVP_CIPHER_CTX *ctx;
ctx = EVP_CIPHER_CTX_new(); ctx = EVP_CIPHER_CTX_new();
@@ -384,12 +384,24 @@ ngx_quic_tls_open(const ngx_quic_cipher_t *cipher, ngx_quic_secret_t *s,
return NGX_ERROR; return NGX_ERROR;
} }
if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GCM_SET_IVLEN, s->iv.len, NULL) in->len -= NGX_QUIC_TAG_LEN;
if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_TAG, NGX_QUIC_TAG_LEN,
in->data + in->len)
== 0) == 0)
{ {
EVP_CIPHER_CTX_free(ctx); EVP_CIPHER_CTX_free(ctx);
ngx_ssl_error(NGX_LOG_INFO, log, 0, ngx_ssl_error(NGX_LOG_INFO, log, 0,
"EVP_CIPHER_CTX_ctrl(EVP_CTRL_GCM_SET_IVLEN) failed"); "EVP_CIPHER_CTX_ctrl(EVP_CTRL_AEAD_SET_TAG) failed");
return NGX_ERROR;
}
if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_IVLEN, s->iv.len, NULL)
== 0)
{
EVP_CIPHER_CTX_free(ctx);
ngx_ssl_error(NGX_LOG_INFO, log, 0,
"EVP_CIPHER_CTX_ctrl(EVP_CTRL_AEAD_SET_IVLEN) failed");
return NGX_ERROR; return NGX_ERROR;
} }
@@ -399,34 +411,29 @@ ngx_quic_tls_open(const ngx_quic_cipher_t *cipher, ngx_quic_secret_t *s,
return NGX_ERROR; return NGX_ERROR;
} }
if (EVP_CIPHER_mode(cipher) == EVP_CIPH_CCM_MODE
&& EVP_DecryptUpdate(ctx, NULL, &len, NULL, in->len) != 1)
{
EVP_CIPHER_CTX_free(ctx);
ngx_ssl_error(NGX_LOG_INFO, log, 0, "EVP_DecryptUpdate() failed");
return NGX_ERROR;
}
if (EVP_DecryptUpdate(ctx, NULL, &len, ad->data, ad->len) != 1) { if (EVP_DecryptUpdate(ctx, NULL, &len, ad->data, ad->len) != 1) {
EVP_CIPHER_CTX_free(ctx); EVP_CIPHER_CTX_free(ctx);
ngx_ssl_error(NGX_LOG_INFO, log, 0, "EVP_DecryptUpdate() failed"); ngx_ssl_error(NGX_LOG_INFO, log, 0, "EVP_DecryptUpdate() failed");
return NGX_ERROR; return NGX_ERROR;
} }
if (EVP_DecryptUpdate(ctx, out->data, &len, in->data, if (EVP_DecryptUpdate(ctx, out->data, &len, in->data, in->len) != 1) {
in->len - EVP_GCM_TLS_TAG_LEN)
!= 1)
{
EVP_CIPHER_CTX_free(ctx); EVP_CIPHER_CTX_free(ctx);
ngx_ssl_error(NGX_LOG_INFO, log, 0, "EVP_DecryptUpdate() failed"); ngx_ssl_error(NGX_LOG_INFO, log, 0, "EVP_DecryptUpdate() failed");
return NGX_ERROR; return NGX_ERROR;
} }
out->len = len; out->len = len;
tag = in->data + in->len - EVP_GCM_TLS_TAG_LEN;
if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GCM_SET_TAG, EVP_GCM_TLS_TAG_LEN, tag) if (EVP_DecryptFinal_ex(ctx, out->data + out->len, &len) <= 0) {
== 0)
{
EVP_CIPHER_CTX_free(ctx);
ngx_ssl_error(NGX_LOG_INFO, log, 0,
"EVP_CIPHER_CTX_ctrl(EVP_CTRL_GCM_SET_TAG) failed");
return NGX_ERROR;
}
if (EVP_DecryptFinal_ex(ctx, out->data + len, &len) <= 0) {
EVP_CIPHER_CTX_free(ctx); EVP_CIPHER_CTX_free(ctx);
ngx_ssl_error(NGX_LOG_INFO, log, 0, "EVP_DecryptFinal_ex failed"); ngx_ssl_error(NGX_LOG_INFO, log, 0, "EVP_DecryptFinal_ex failed");
return NGX_ERROR; return NGX_ERROR;
@@ -482,12 +489,23 @@ ngx_quic_tls_seal(const ngx_quic_cipher_t *cipher, ngx_quic_secret_t *s,
return NGX_ERROR; return NGX_ERROR;
} }
if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GCM_SET_IVLEN, s->iv.len, NULL) if (EVP_CIPHER_mode(cipher) == EVP_CIPH_CCM_MODE
&& EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_TAG, NGX_QUIC_TAG_LEN,
NULL)
== 0)
{
EVP_CIPHER_CTX_free(ctx);
ngx_ssl_error(NGX_LOG_INFO, log, 0,
"EVP_CIPHER_CTX_ctrl(EVP_CTRL_AEAD_SET_TAG) failed");
return NGX_ERROR;
}
if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_IVLEN, s->iv.len, NULL)
== 0) == 0)
{ {
EVP_CIPHER_CTX_free(ctx); EVP_CIPHER_CTX_free(ctx);
ngx_ssl_error(NGX_LOG_INFO, log, 0, ngx_ssl_error(NGX_LOG_INFO, log, 0,
"EVP_CIPHER_CTX_ctrl(EVP_CTRL_GCM_SET_IVLEN) failed"); "EVP_CIPHER_CTX_ctrl(EVP_CTRL_AEAD_SET_IVLEN) failed");
return NGX_ERROR; return NGX_ERROR;
} }
@@ -497,6 +515,14 @@ ngx_quic_tls_seal(const ngx_quic_cipher_t *cipher, ngx_quic_secret_t *s,
return NGX_ERROR; return NGX_ERROR;
} }
if (EVP_CIPHER_mode(cipher) == EVP_CIPH_CCM_MODE
&& EVP_EncryptUpdate(ctx, NULL, &len, NULL, in->len) != 1)
{
EVP_CIPHER_CTX_free(ctx);
ngx_ssl_error(NGX_LOG_INFO, log, 0, "EVP_EncryptUpdate() failed");
return NGX_ERROR;
}
if (EVP_EncryptUpdate(ctx, NULL, &len, ad->data, ad->len) != 1) { if (EVP_EncryptUpdate(ctx, NULL, &len, ad->data, ad->len) != 1) {
EVP_CIPHER_CTX_free(ctx); EVP_CIPHER_CTX_free(ctx);
ngx_ssl_error(NGX_LOG_INFO, log, 0, "EVP_EncryptUpdate() failed"); ngx_ssl_error(NGX_LOG_INFO, log, 0, "EVP_EncryptUpdate() failed");
@@ -519,20 +545,21 @@ ngx_quic_tls_seal(const ngx_quic_cipher_t *cipher, ngx_quic_secret_t *s,
out->len += len; out->len += len;
if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GCM_GET_TAG, EVP_GCM_TLS_TAG_LEN, if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_GET_TAG, NGX_QUIC_TAG_LEN,
out->data + in->len) out->data + out->len)
== 0) == 0)
{ {
EVP_CIPHER_CTX_free(ctx); EVP_CIPHER_CTX_free(ctx);
ngx_ssl_error(NGX_LOG_INFO, log, 0, ngx_ssl_error(NGX_LOG_INFO, log, 0,
"EVP_CIPHER_CTX_ctrl(EVP_CTRL_GCM_GET_TAG) failed"); "EVP_CIPHER_CTX_ctrl(EVP_CTRL_AEAD_GET_TAG) failed");
return NGX_ERROR; return NGX_ERROR;
} }
EVP_CIPHER_CTX_free(ctx); out->len += NGX_QUIC_TAG_LEN;
out->len += EVP_GCM_TLS_TAG_LEN; EVP_CIPHER_CTX_free(ctx);
#endif #endif
return NGX_OK; return NGX_OK;
} }
@@ -738,7 +765,7 @@ ngx_quic_create_packet(ngx_quic_header_t *pkt, ngx_str_t *res)
ad.data = res->data; ad.data = res->data;
ad.len = ngx_quic_create_header(pkt, ad.data, &pnp); ad.len = ngx_quic_create_header(pkt, ad.data, &pnp);
out.len = pkt->payload.len + EVP_GCM_TLS_TAG_LEN; out.len = pkt->payload.len + NGX_QUIC_TAG_LEN;
out.data = res->data + ad.len; out.data = res->data + ad.len;
#ifdef NGX_QUIC_DEBUG_CRYPTO #ifdef NGX_QUIC_DEBUG_CRYPTO
@@ -802,7 +829,7 @@ ngx_quic_create_retry_packet(ngx_quic_header_t *pkt, ngx_str_t *res)
ad.len = ngx_quic_create_retry_itag(pkt, ad.data, &start); ad.len = ngx_quic_create_retry_itag(pkt, ad.data, &start);
itag.data = ad.data + ad.len; itag.data = ad.data + ad.len;
itag.len = EVP_GCM_TLS_TAG_LEN; itag.len = NGX_QUIC_TAG_LEN;
#ifdef NGX_QUIC_DEBUG_CRYPTO #ifdef NGX_QUIC_DEBUG_CRYPTO
ngx_log_debug2(NGX_LOG_DEBUG_EVENT, pkt->log, 0, ngx_log_debug2(NGX_LOG_DEBUG_EVENT, pkt->log, 0,
@@ -979,7 +1006,7 @@ ngx_quic_decrypt(ngx_quic_header_t *pkt, uint64_t *largest_pn)
* AES and ChaCha20 algorithms sample 16 bytes * AES and ChaCha20 algorithms sample 16 bytes
*/ */
if (len < EVP_GCM_TLS_TAG_LEN + 4) { if (len < NGX_QUIC_TAG_LEN + 4) {
return NGX_DECLINED; return NGX_DECLINED;
} }
@@ -1039,7 +1066,7 @@ ngx_quic_decrypt(ngx_quic_header_t *pkt, uint64_t *largest_pn)
"quic ad len:%uz %xV", ad.len, &ad); "quic ad len:%uz %xV", ad.len, &ad);
#endif #endif
pkt->payload.len = in.len - EVP_GCM_TLS_TAG_LEN; pkt->payload.len = in.len - NGX_QUIC_TAG_LEN;
pkt->payload.data = pkt->plaintext + ad.len; pkt->payload.data = pkt->plaintext + ad.len;
rc = ngx_quic_tls_open(ciphers.c, secret, &pkt->payload, rc = ngx_quic_tls_open(ciphers.c, secret, &pkt->payload,
src/event/quic/ngx_event_quic_protection.h
+2 -1
View File
@@ -16,8 +16,9 @@
#define NGX_QUIC_ENCRYPTION_LAST ((ssl_encryption_application) + 1) #define NGX_QUIC_ENCRYPTION_LAST ((ssl_encryption_application) + 1)
/* RFC 5116, 5.1 and RFC 8439, 2.3 for all supported ciphers */ /* RFC 5116, 5.1/5.3 and RFC 8439, 2.3/2.5 for all supported ciphers */
#define NGX_QUIC_IV_LEN 12 #define NGX_QUIC_IV_LEN 12
#define NGX_QUIC_TAG_LEN 16
/* largest hash used in TLS is SHA-384 */ /* largest hash used in TLS is SHA-384 */
#define NGX_QUIC_MAX_MD_SIZE 48 #define NGX_QUIC_MAX_MD_SIZE 48
src/event/quic/ngx_event_quic_tokens.c
+32 -12
View File
@@ -69,11 +69,10 @@ ngx_quic_new_token(ngx_log_t *log, struct sockaddr *sockaddr,
len = p - in; len = p - in;
cipher = EVP_aes_256_cbc(); cipher = EVP_aes_256_gcm();
iv_len = NGX_QUIC_AES_256_CBC_IV_LEN; iv_len = NGX_QUIC_AES_256_GCM_IV_LEN;
if ((size_t) (iv_len + len + NGX_QUIC_AES_256_CBC_BLOCK_SIZE) > token->len) if ((size_t) (iv_len + len + NGX_QUIC_AES_256_GCM_TAG_LEN) > token->len) {
{
ngx_log_error(NGX_LOG_ALERT, log, 0, "quic token buffer is too small"); ngx_log_error(NGX_LOG_ALERT, log, 0, "quic token buffer is too small");
return NGX_ERROR; return NGX_ERROR;
} }
@@ -108,6 +107,17 @@ ngx_quic_new_token(ngx_log_t *log, struct sockaddr *sockaddr,
token->len += len; token->len += len;
if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_GET_TAG,
NGX_QUIC_AES_256_GCM_TAG_LEN,
token->data + token->len)
== 0)
{
EVP_CIPHER_CTX_free(ctx);
return NGX_ERROR;
}
token->len += NGX_QUIC_AES_256_GCM_TAG_LEN;
EVP_CIPHER_CTX_free(ctx); EVP_CIPHER_CTX_free(ctx);
#ifdef NGX_QUIC_DEBUG_PACKETS #ifdef NGX_QUIC_DEBUG_PACKETS
@@ -184,17 +194,19 @@ ngx_quic_validate_token(ngx_connection_t *c, u_char *key,
/* Retry token or NEW_TOKEN in a previous connection */ /* Retry token or NEW_TOKEN in a previous connection */
cipher = EVP_aes_256_cbc(); cipher = EVP_aes_256_gcm();
iv = pkt->token.data; iv = pkt->token.data;
iv_len = NGX_QUIC_AES_256_CBC_IV_LEN; iv_len = NGX_QUIC_AES_256_GCM_IV_LEN;
/* sanity checks */ /* sanity checks */
if (pkt->token.len < (size_t) iv_len + NGX_QUIC_AES_256_CBC_BLOCK_SIZE) { if (pkt->token.len < (size_t) iv_len + NGX_QUIC_AES_256_GCM_TAG_LEN) {
goto garbage; goto garbage;
} }
if (pkt->token.len > (size_t) iv_len + NGX_QUIC_MAX_TOKEN_SIZE) { if (pkt->token.len > (size_t) iv_len + NGX_QUIC_MAX_TOKEN_SIZE
+ NGX_QUIC_AES_256_GCM_TAG_LEN)
{
goto garbage; goto garbage;
} }
@@ -209,15 +221,23 @@ ngx_quic_validate_token(ngx_connection_t *c, u_char *key,
} }
p = pkt->token.data + iv_len; p = pkt->token.data + iv_len;
len = pkt->token.len - iv_len; len = pkt->token.len - iv_len - NGX_QUIC_AES_256_GCM_TAG_LEN;
if (EVP_DecryptUpdate(ctx, tdec, &len, p, len) != 1) { if (EVP_DecryptUpdate(ctx, tdec, &tlen, p, len) != 1) {
EVP_CIPHER_CTX_free(ctx); EVP_CIPHER_CTX_free(ctx);
goto garbage; goto garbage;
} }
total = len; total = tlen;
if (EVP_DecryptFinal_ex(ctx, tdec + len, &tlen) <= 0) { if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_TAG,
NGX_QUIC_AES_256_GCM_TAG_LEN, p + len)
== 0)
{
EVP_CIPHER_CTX_free(ctx);
goto garbage;
}
if (EVP_DecryptFinal_ex(ctx, tdec + tlen, &tlen) <= 0) {
EVP_CIPHER_CTX_free(ctx); EVP_CIPHER_CTX_free(ctx);
goto garbage; goto garbage;
} }
src/event/quic/ngx_event_quic_tokens.h
+4 -5
View File
@@ -15,13 +15,12 @@
#define NGX_QUIC_MAX_TOKEN_SIZE 64 #define NGX_QUIC_MAX_TOKEN_SIZE 64
/* SHA-1(addr)=20 + sizeof(time_t) + retry(1) + odcid.len(1) + odcid */ /* SHA-1(addr)=20 + sizeof(time_t) + retry(1) + odcid.len(1) + odcid */
/* RFC 3602, 2.1 and 2.4 for AES-CBC block size and IV length */ #define NGX_QUIC_AES_256_GCM_IV_LEN 12
#define NGX_QUIC_AES_256_CBC_IV_LEN 16 #define NGX_QUIC_AES_256_GCM_TAG_LEN 16
#define NGX_QUIC_AES_256_CBC_BLOCK_SIZE 16
#define NGX_QUIC_TOKEN_BUF_SIZE (NGX_QUIC_AES_256_CBC_IV_LEN \ #define NGX_QUIC_TOKEN_BUF_SIZE (NGX_QUIC_AES_256_GCM_IV_LEN \
+ NGX_QUIC_MAX_TOKEN_SIZE \ + NGX_QUIC_MAX_TOKEN_SIZE \
+ NGX_QUIC_AES_256_CBC_BLOCK_SIZE) + NGX_QUIC_AES_256_GCM_TAG_LEN)
ngx_int_t ngx_quic_new_sr_token(ngx_connection_t *c, ngx_str_t *cid, ngx_int_t ngx_quic_new_sr_token(ngx_connection_t *c, ngx_str_t *cid,
src/event/quic/ngx_event_quic_transport.c
+3 -3
View File
@@ -578,7 +578,7 @@ ngx_quic_payload_size(ngx_quic_header_t *pkt, size_t pkt_len)
if (ngx_quic_short_pkt(pkt->flags)) { if (ngx_quic_short_pkt(pkt->flags)) {
len = 1 + pkt->dcid.len + pkt->num_len + EVP_GCM_TLS_TAG_LEN; len = 1 + pkt->dcid.len + pkt->num_len + NGX_QUIC_TAG_LEN;
if (len > pkt_len) { if (len > pkt_len) {
return 0; return 0;
} }
@@ -596,7 +596,7 @@ ngx_quic_payload_size(ngx_quic_header_t *pkt, size_t pkt_len)
/* (pkt_len - len) is 'remainder' packet length (see RFC 9000, 17.2) */ /* (pkt_len - len) is 'remainder' packet length (see RFC 9000, 17.2) */
len += ngx_quic_varint_len(pkt_len - len) len += ngx_quic_varint_len(pkt_len - len)
+ pkt->num_len + EVP_GCM_TLS_TAG_LEN; + pkt->num_len + NGX_QUIC_TAG_LEN;
if (len > pkt_len) { if (len > pkt_len) {
return 0; return 0;
@@ -622,7 +622,7 @@ ngx_quic_create_long_header(ngx_quic_header_t *pkt, u_char *out,
size_t rem_len; size_t rem_len;
u_char *p, *start; u_char *p, *start;
rem_len = pkt->num_len + pkt->payload.len + EVP_GCM_TLS_TAG_LEN; rem_len = pkt->num_len + pkt->payload.len + NGX_QUIC_TAG_LEN;
if (out == NULL) { if (out == NULL) {
return 5 + 2 + pkt->dcid.len + pkt->scid.len return 5 + 2 + pkt->dcid.len + pkt->scid.len