Skip to content

Commit

Permalink
QUIC: common code for crypto open and seal operations.
Browse files Browse the repository at this point in the history
  • Loading branch information
@pluknet
pluknet committed Oct 20, 2023
1 parent 80a695a commit 52d5071
Showing 1 changed file with 63 additions and 76 deletions.
139 changes: 63 additions & 76 deletions src/event/quic/ngx_event_quic_protection.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,10 @@ static uint64_t ngx_quic_parse_pn(u_char **pos, ngx_int_t len, u_char *mask,

static ngx_int_t ngx_quic_crypto_open(ngx_quic_secret_t *s, ngx_str_t *out,
u_char *nonce, ngx_str_t *in, ngx_str_t *ad, ngx_log_t *log);
#ifndef OPENSSL_IS_BORINGSSL
static ngx_int_t ngx_quic_crypto_common(ngx_quic_secret_t *s, ngx_str_t *out,
u_char *nonce, ngx_str_t *in, ngx_str_t *ad, ngx_log_t *log);
#endif
static ngx_int_t ngx_quic_crypto_hp(ngx_log_t *log, const EVP_CIPHER *cipher,
ngx_quic_secret_t *s, u_char *out, u_char *in);

Expand Down Expand Up @@ -426,133 +430,116 @@ static ngx_int_t
ngx_quic_crypto_open(ngx_quic_secret_t *s, ngx_str_t *out, u_char *nonce,
ngx_str_t *in, ngx_str_t *ad, ngx_log_t *log)
{
ngx_quic_crypto_ctx_t *ctx;

ctx = s->ctx;

#ifdef OPENSSL_IS_BORINGSSL
if (EVP_AEAD_CTX_open(ctx, out->data, &out->len, out->len, nonce, s->iv.len,
in->data, in->len, ad->data, ad->len)
if (EVP_AEAD_CTX_open(s->ctx, out->data, &out->len, out->len, nonce,
s->iv.len, in->data, in->len, ad->data, ad->len)
!= 1)
{
ngx_ssl_error(NGX_LOG_INFO, log, 0, "EVP_AEAD_CTX_open() failed");
return NGX_ERROR;
}
#else
int len;

if (EVP_DecryptInit_ex(ctx, NULL, NULL, NULL, nonce) != 1) {
ngx_ssl_error(NGX_LOG_INFO, log, 0, "EVP_DecryptInit_ex() failed");
return NGX_ERROR;
}

in->len -= NGX_QUIC_TAG_LEN;
return NGX_OK;
#else
return ngx_quic_crypto_common(s, out, nonce, in, ad, log);
#endif
}

if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_TAG, NGX_QUIC_TAG_LEN,
in->data + in->len)
== 0)
{
ngx_ssl_error(NGX_LOG_INFO, log, 0,
"EVP_CIPHER_CTX_ctrl(EVP_CTRL_AEAD_SET_TAG) failed");
return NGX_ERROR;
}

if (EVP_CIPHER_mode(EVP_CIPHER_CTX_cipher(ctx)) == EVP_CIPH_CCM_MODE
&& EVP_DecryptUpdate(ctx, NULL, &len, NULL, in->len) != 1)
ngx_int_t
ngx_quic_crypto_seal(ngx_quic_secret_t *s, ngx_str_t *out, u_char *nonce,
ngx_str_t *in, ngx_str_t *ad, ngx_log_t *log)
{
#ifdef OPENSSL_IS_BORINGSSL
if (EVP_AEAD_CTX_seal(s->ctx, out->data, &out->len, out->len, nonce,
s->iv.len, in->data, in->len, ad->data, ad->len)
!= 1)
{
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) {
ngx_ssl_error(NGX_LOG_INFO, log, 0, "EVP_DecryptUpdate() failed");
return NGX_ERROR;
}

if (EVP_DecryptUpdate(ctx, out->data, &len, in->data, in->len) != 1) {
ngx_ssl_error(NGX_LOG_INFO, log, 0, "EVP_DecryptUpdate() failed");
return NGX_ERROR;
}

out->len = len;

if (EVP_DecryptFinal_ex(ctx, out->data + out->len, &len) <= 0) {
ngx_ssl_error(NGX_LOG_INFO, log, 0, "EVP_DecryptFinal_ex failed");
ngx_ssl_error(NGX_LOG_INFO, log, 0, "EVP_AEAD_CTX_seal() failed");
return NGX_ERROR;
}

out->len += len;
#endif

return NGX_OK;
#else
return ngx_quic_crypto_common(s, out, nonce, in, ad, log);
#endif
}


ngx_int_t
ngx_quic_crypto_seal(ngx_quic_secret_t *s, ngx_str_t *out, u_char *nonce,
#ifndef OPENSSL_IS_BORINGSSL

static ngx_int_t
ngx_quic_crypto_common(ngx_quic_secret_t *s, ngx_str_t *out, u_char *nonce,
ngx_str_t *in, ngx_str_t *ad, ngx_log_t *log)
{
int len, enc;
ngx_quic_crypto_ctx_t *ctx;

ctx = s->ctx;
enc = EVP_CIPHER_CTX_encrypting(ctx);

#ifdef OPENSSL_IS_BORINGSSL
if (EVP_AEAD_CTX_seal(ctx, out->data, &out->len, out->len, nonce, s->iv.len,
in->data, in->len, ad->data, ad->len)
!= 1)
{
ngx_ssl_error(NGX_LOG_INFO, log, 0, "EVP_AEAD_CTX_seal() failed");
if (EVP_CipherInit_ex(ctx, NULL, NULL, NULL, nonce, enc) != 1) {
ngx_ssl_error(NGX_LOG_INFO, log, 0, "EVP_CipherInit_ex() failed");
return NGX_ERROR;
}
#else
int len;

if (EVP_EncryptInit_ex(ctx, NULL, NULL, NULL, nonce) != 1) {
ngx_ssl_error(NGX_LOG_INFO, log, 0, "EVP_EncryptInit_ex() failed");
return NGX_ERROR;
if (enc == 0) {
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)
{
ngx_ssl_error(NGX_LOG_INFO, log, 0,
"EVP_CIPHER_CTX_ctrl(EVP_CTRL_AEAD_SET_TAG) failed");
return NGX_ERROR;
}
}

if (EVP_CIPHER_mode(EVP_CIPHER_CTX_cipher(ctx)) == EVP_CIPH_CCM_MODE
&& EVP_EncryptUpdate(ctx, NULL, &len, NULL, in->len) != 1)
&& EVP_CipherUpdate(ctx, NULL, &len, NULL, in->len) != 1)
{
ngx_ssl_error(NGX_LOG_INFO, log, 0, "EVP_EncryptUpdate() failed");
ngx_ssl_error(NGX_LOG_INFO, log, 0, "EVP_CipherUpdate() failed");
return NGX_ERROR;
}

if (EVP_EncryptUpdate(ctx, NULL, &len, ad->data, ad->len) != 1) {
ngx_ssl_error(NGX_LOG_INFO, log, 0, "EVP_EncryptUpdate() failed");
if (EVP_CipherUpdate(ctx, NULL, &len, ad->data, ad->len) != 1) {
ngx_ssl_error(NGX_LOG_INFO, log, 0, "EVP_CipherUpdate() failed");
return NGX_ERROR;
}

if (EVP_EncryptUpdate(ctx, out->data, &len, in->data, in->len) != 1) {
ngx_ssl_error(NGX_LOG_INFO, log, 0, "EVP_EncryptUpdate() failed");
if (EVP_CipherUpdate(ctx, out->data, &len, in->data, in->len) != 1) {
ngx_ssl_error(NGX_LOG_INFO, log, 0, "EVP_CipherUpdate() failed");
return NGX_ERROR;
}

out->len = len;

if (EVP_EncryptFinal_ex(ctx, out->data + out->len, &len) <= 0) {
ngx_ssl_error(NGX_LOG_INFO, log, 0, "EVP_EncryptFinal_ex failed");
if (EVP_CipherFinal_ex(ctx, out->data + out->len, &len) <= 0) {
ngx_ssl_error(NGX_LOG_INFO, log, 0, "EVP_CipherFinal_ex failed");
return NGX_ERROR;
}

out->len += len;

if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_GET_TAG, NGX_QUIC_TAG_LEN,
out->data + out->len)
== 0)
{
ngx_ssl_error(NGX_LOG_INFO, log, 0,
"EVP_CIPHER_CTX_ctrl(EVP_CTRL_AEAD_GET_TAG) failed");
return NGX_ERROR;
}
if (enc == 1) {
if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_GET_TAG, NGX_QUIC_TAG_LEN,
out->data + out->len)
== 0)
{
ngx_ssl_error(NGX_LOG_INFO, log, 0,
"EVP_CIPHER_CTX_ctrl(EVP_CTRL_AEAD_GET_TAG) failed");
return NGX_ERROR;
}

out->len += NGX_QUIC_TAG_LEN;
#endif
out->len += NGX_QUIC_TAG_LEN;
}

return NGX_OK;
}

#endif


void
ngx_quic_crypto_cleanup(ngx_quic_secret_t *s)
Expand Down

0 comments on commit 52d5071

Please sign in to comment.