|
@@ -15,22 +15,6 @@
|
|
|
#include "record_local.h"
|
|
|
#include "internal/cryptlib.h"
|
|
|
|
|
|
-/*
|
|
|
- * Clear the contents of an SSL3_RECORD but retain any memory allocated
|
|
|
- */
|
|
|
-void SSL3_RECORD_clear(SSL3_RECORD *r, size_t num_recs)
|
|
|
-{
|
|
|
- unsigned char *comp;
|
|
|
- size_t i;
|
|
|
-
|
|
|
- for (i = 0; i < num_recs; i++) {
|
|
|
- comp = r[i].comp;
|
|
|
-
|
|
|
- memset(&r[i], 0, sizeof(*r));
|
|
|
- r[i].comp = comp;
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
void SSL3_RECORD_release(SSL3_RECORD *r, size_t num_recs)
|
|
|
{
|
|
|
size_t i;
|
|
@@ -101,359 +85,3 @@ int ossl_early_data_count_ok(SSL_CONNECTION *s, size_t length, size_t overhead,
|
|
|
|
|
|
return 1;
|
|
|
}
|
|
|
-
|
|
|
-int ssl3_do_uncompress(SSL_CONNECTION *ssl, SSL3_RECORD *rr)
|
|
|
-{
|
|
|
-#ifndef OPENSSL_NO_COMP
|
|
|
- int i;
|
|
|
-
|
|
|
- if (rr->comp == NULL) {
|
|
|
- rr->comp = (unsigned char *)
|
|
|
- OPENSSL_malloc(SSL3_RT_MAX_ENCRYPTED_LENGTH);
|
|
|
- }
|
|
|
- if (rr->comp == NULL)
|
|
|
- return 0;
|
|
|
-
|
|
|
- i = COMP_expand_block(ssl->expand, rr->comp,
|
|
|
- SSL3_RT_MAX_PLAIN_LENGTH, rr->data, (int)rr->length);
|
|
|
- if (i < 0)
|
|
|
- return 0;
|
|
|
- else
|
|
|
- rr->length = i;
|
|
|
- rr->data = rr->comp;
|
|
|
-#endif
|
|
|
- return 1;
|
|
|
-}
|
|
|
-
|
|
|
-int ssl3_do_compress(SSL_CONNECTION *sc, SSL3_RECORD *wr)
|
|
|
-{
|
|
|
-#ifndef OPENSSL_NO_COMP
|
|
|
- int i;
|
|
|
-
|
|
|
- i = COMP_compress_block(sc->compress, wr->data,
|
|
|
- (int)(wr->length + SSL3_RT_MAX_COMPRESSED_OVERHEAD),
|
|
|
- wr->input, (int)wr->length);
|
|
|
- if (i < 0)
|
|
|
- return 0;
|
|
|
- else
|
|
|
- wr->length = i;
|
|
|
-
|
|
|
- wr->input = wr->data;
|
|
|
-#endif
|
|
|
- return 1;
|
|
|
-}
|
|
|
-
|
|
|
-#define MAX_PADDING 256
|
|
|
-/*-
|
|
|
- * tls1_enc encrypts/decrypts |n_recs| in |recs|. Calls SSLfatal on internal
|
|
|
- * error, but not otherwise. It is the responsibility of the caller to report
|
|
|
- * a bad_record_mac - if appropriate (DTLS just drops the record).
|
|
|
- *
|
|
|
- * Returns:
|
|
|
- * 0: if the record is publicly invalid, or an internal error, or AEAD
|
|
|
- * decryption failed, or Encrypt-then-mac decryption failed.
|
|
|
- * 1: Success or Mac-then-encrypt decryption failed (MAC will be randomised)
|
|
|
- */
|
|
|
-int tls1_enc(SSL_CONNECTION *s, SSL3_RECORD *recs, size_t n_recs, int sending,
|
|
|
- SSL_MAC_BUF *macs, size_t macsize)
|
|
|
-{
|
|
|
- EVP_CIPHER_CTX *ds;
|
|
|
- size_t reclen[SSL_MAX_PIPELINES];
|
|
|
- unsigned char buf[SSL_MAX_PIPELINES][EVP_AEAD_TLS1_AAD_LEN];
|
|
|
- int i, pad = 0, tmpr;
|
|
|
- size_t bs, ctr, padnum, loop;
|
|
|
- unsigned char padval;
|
|
|
- const EVP_CIPHER *enc;
|
|
|
- int tlstree_enc = (s->mac_flags & SSL_MAC_FLAG_WRITE_MAC_TLSTREE);
|
|
|
-
|
|
|
- if (n_recs == 0) {
|
|
|
- SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
|
|
|
- return 0;
|
|
|
- }
|
|
|
-
|
|
|
- assert(sending);
|
|
|
- if (EVP_MD_CTX_get0_md(s->write_hash)) {
|
|
|
- int n = EVP_MD_CTX_get_size(s->write_hash);
|
|
|
-
|
|
|
- if (!ossl_assert(n >= 0)) {
|
|
|
- SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
|
|
|
- return 0;
|
|
|
- }
|
|
|
- }
|
|
|
- ds = s->enc_write_ctx;
|
|
|
- if (s->enc_write_ctx == NULL)
|
|
|
- enc = NULL;
|
|
|
- else {
|
|
|
- int ivlen;
|
|
|
-
|
|
|
- enc = EVP_CIPHER_CTX_get0_cipher(s->enc_write_ctx);
|
|
|
- /* For TLSv1.1 and later explicit IV */
|
|
|
- if (SSL_USE_EXPLICIT_IV(s)
|
|
|
- && EVP_CIPHER_get_mode(enc) == EVP_CIPH_CBC_MODE)
|
|
|
- ivlen = EVP_CIPHER_get_iv_length(enc);
|
|
|
- else
|
|
|
- ivlen = 0;
|
|
|
- if (ivlen > 1) {
|
|
|
- for (ctr = 0; ctr < n_recs; ctr++) {
|
|
|
- if (recs[ctr].data != recs[ctr].input) {
|
|
|
- /*
|
|
|
- * we can't write into the input stream: Can this ever
|
|
|
- * happen?? (steve)
|
|
|
- */
|
|
|
- SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
|
|
|
- return 0;
|
|
|
- } else if (RAND_bytes_ex(SSL_CONNECTION_GET_CTX(s)->libctx,
|
|
|
- recs[ctr].input,
|
|
|
- ivlen, 0) <= 0) {
|
|
|
- SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
|
|
|
- return 0;
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- if ((s->session == NULL) || (ds == NULL) || (enc == NULL)) {
|
|
|
- for (ctr = 0; ctr < n_recs; ctr++) {
|
|
|
- memmove(recs[ctr].data, recs[ctr].input, recs[ctr].length);
|
|
|
- recs[ctr].input = recs[ctr].data;
|
|
|
- }
|
|
|
- } else {
|
|
|
- int provided = (EVP_CIPHER_get0_provider(enc) != NULL);
|
|
|
-
|
|
|
- bs = EVP_CIPHER_get_block_size(EVP_CIPHER_CTX_get0_cipher(ds));
|
|
|
-
|
|
|
- if (n_recs > 1) {
|
|
|
- if ((EVP_CIPHER_get_flags(EVP_CIPHER_CTX_get0_cipher(ds))
|
|
|
- & EVP_CIPH_FLAG_PIPELINE) == 0) {
|
|
|
- /*
|
|
|
- * We shouldn't have been called with pipeline data if the
|
|
|
- * cipher doesn't support pipelining
|
|
|
- */
|
|
|
- SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_R_PIPELINE_FAILURE);
|
|
|
- return 0;
|
|
|
- }
|
|
|
- }
|
|
|
- for (ctr = 0; ctr < n_recs; ctr++) {
|
|
|
- reclen[ctr] = recs[ctr].length;
|
|
|
-
|
|
|
- if ((EVP_CIPHER_get_flags(EVP_CIPHER_CTX_get0_cipher(ds))
|
|
|
- & EVP_CIPH_FLAG_AEAD_CIPHER) != 0) {
|
|
|
- unsigned char *seq;
|
|
|
-
|
|
|
- seq = RECORD_LAYER_get_write_sequence(&s->rlayer);
|
|
|
-
|
|
|
- if (SSL_CONNECTION_IS_DTLS(s)) {
|
|
|
- /* DTLS does not support pipelining */
|
|
|
- unsigned char dtlsseq[8], *p = dtlsseq;
|
|
|
-
|
|
|
- s2n(DTLS_RECORD_LAYER_get_w_epoch(&s->rlayer), p);
|
|
|
- memcpy(p, &seq[2], 6);
|
|
|
- memcpy(buf[ctr], dtlsseq, 8);
|
|
|
- } else {
|
|
|
- memcpy(buf[ctr], seq, 8);
|
|
|
- for (i = 7; i >= 0; i--) { /* increment */
|
|
|
- ++seq[i];
|
|
|
- if (seq[i] != 0)
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- buf[ctr][8] = recs[ctr].type;
|
|
|
- buf[ctr][9] = (unsigned char)(s->version >> 8);
|
|
|
- buf[ctr][10] = (unsigned char)(s->version);
|
|
|
- buf[ctr][11] = (unsigned char)(recs[ctr].length >> 8);
|
|
|
- buf[ctr][12] = (unsigned char)(recs[ctr].length & 0xff);
|
|
|
- pad = EVP_CIPHER_CTX_ctrl(ds, EVP_CTRL_AEAD_TLS1_AAD,
|
|
|
- EVP_AEAD_TLS1_AAD_LEN, buf[ctr]);
|
|
|
- if (pad <= 0) {
|
|
|
- SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
|
|
|
- return 0;
|
|
|
- }
|
|
|
-
|
|
|
- reclen[ctr] += pad;
|
|
|
- recs[ctr].length += pad;
|
|
|
-
|
|
|
- } else if ((bs != 1) && !provided) {
|
|
|
- /*
|
|
|
- * We only do this for legacy ciphers. Provided ciphers add the
|
|
|
- * padding on the provider side.
|
|
|
- */
|
|
|
- padnum = bs - (reclen[ctr] % bs);
|
|
|
-
|
|
|
- /* Add weird padding of up to 256 bytes */
|
|
|
-
|
|
|
- if (padnum > MAX_PADDING) {
|
|
|
- SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
|
|
|
- return 0;
|
|
|
- }
|
|
|
- /* we need to add 'padnum' padding bytes of value padval */
|
|
|
- padval = (unsigned char)(padnum - 1);
|
|
|
- for (loop = reclen[ctr]; loop < reclen[ctr] + padnum; loop++)
|
|
|
- recs[ctr].input[loop] = padval;
|
|
|
- reclen[ctr] += padnum;
|
|
|
- recs[ctr].length += padnum;
|
|
|
- }
|
|
|
- }
|
|
|
- if (n_recs > 1) {
|
|
|
- unsigned char *data[SSL_MAX_PIPELINES];
|
|
|
-
|
|
|
- /* Set the output buffers */
|
|
|
- for (ctr = 0; ctr < n_recs; ctr++) {
|
|
|
- data[ctr] = recs[ctr].data;
|
|
|
- }
|
|
|
- if (EVP_CIPHER_CTX_ctrl(ds, EVP_CTRL_SET_PIPELINE_OUTPUT_BUFS,
|
|
|
- (int)n_recs, data) <= 0) {
|
|
|
- SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_R_PIPELINE_FAILURE);
|
|
|
- return 0;
|
|
|
- }
|
|
|
- /* Set the input buffers */
|
|
|
- for (ctr = 0; ctr < n_recs; ctr++) {
|
|
|
- data[ctr] = recs[ctr].input;
|
|
|
- }
|
|
|
- if (EVP_CIPHER_CTX_ctrl(ds, EVP_CTRL_SET_PIPELINE_INPUT_BUFS,
|
|
|
- (int)n_recs, data) <= 0
|
|
|
- || EVP_CIPHER_CTX_ctrl(ds, EVP_CTRL_SET_PIPELINE_INPUT_LENS,
|
|
|
- (int)n_recs, reclen) <= 0) {
|
|
|
- SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_R_PIPELINE_FAILURE);
|
|
|
- return 0;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- if (!SSL_CONNECTION_IS_DTLS(s) && tlstree_enc) {
|
|
|
- unsigned char *seq;
|
|
|
- int decrement_seq = 0;
|
|
|
-
|
|
|
- /*
|
|
|
- * When sending, seq is incremented after MAC calculation.
|
|
|
- * So if we are in ETM mode, we use seq 'as is' in the ctrl-function.
|
|
|
- * Otherwise we have to decrease it in the implementation
|
|
|
- */
|
|
|
- if (!SSL_WRITE_ETM(s))
|
|
|
- decrement_seq = 1;
|
|
|
-
|
|
|
- seq = RECORD_LAYER_get_write_sequence(&s->rlayer);
|
|
|
- if (EVP_CIPHER_CTX_ctrl(ds, EVP_CTRL_TLSTREE, decrement_seq, seq) <= 0) {
|
|
|
- SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
|
|
|
- return 0;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- if (provided) {
|
|
|
- int outlen;
|
|
|
-
|
|
|
- /* Provided cipher - we do not support pipelining on this path */
|
|
|
- if (n_recs > 1) {
|
|
|
- SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
|
|
|
- return 0;
|
|
|
- }
|
|
|
-
|
|
|
- if (!EVP_CipherUpdate(ds, recs[0].data, &outlen, recs[0].input,
|
|
|
- (unsigned int)reclen[0]))
|
|
|
- return 0;
|
|
|
- recs[0].length = outlen;
|
|
|
- } else {
|
|
|
- /* Legacy cipher */
|
|
|
-
|
|
|
- tmpr = EVP_Cipher(ds, recs[0].data, recs[0].input,
|
|
|
- (unsigned int)reclen[0]);
|
|
|
- if ((EVP_CIPHER_get_flags(EVP_CIPHER_CTX_get0_cipher(ds))
|
|
|
- & EVP_CIPH_FLAG_CUSTOM_CIPHER) != 0
|
|
|
- ? (tmpr < 0)
|
|
|
- : (tmpr == 0)) {
|
|
|
- /* AEAD can fail to verify MAC */
|
|
|
- return 0;
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- return 1;
|
|
|
-}
|
|
|
-
|
|
|
-int tls1_mac_old(SSL_CONNECTION *sc, SSL3_RECORD *rec, unsigned char *md,
|
|
|
- int sending)
|
|
|
-{
|
|
|
- unsigned char *seq;
|
|
|
- EVP_MD_CTX *hash;
|
|
|
- size_t md_size;
|
|
|
- int i;
|
|
|
- EVP_MD_CTX *hmac = NULL, *mac_ctx;
|
|
|
- unsigned char header[13];
|
|
|
- int stream_mac = (sc->mac_flags & SSL_MAC_FLAG_WRITE_MAC_STREAM);
|
|
|
- int tlstree_mac = (sc->mac_flags & SSL_MAC_FLAG_WRITE_MAC_TLSTREE);
|
|
|
- int t;
|
|
|
- int ret = 0;
|
|
|
-
|
|
|
- /*
|
|
|
- * All read record layer calls should have been moved to the new record
|
|
|
- * layer.
|
|
|
- */
|
|
|
- assert(sending);
|
|
|
-
|
|
|
- seq = RECORD_LAYER_get_write_sequence(&sc->rlayer);
|
|
|
- hash = sc->write_hash;
|
|
|
-
|
|
|
- t = EVP_MD_CTX_get_size(hash);
|
|
|
- if (!ossl_assert(t >= 0))
|
|
|
- return 0;
|
|
|
- md_size = t;
|
|
|
-
|
|
|
- /* I should fix this up TLS TLS TLS TLS TLS XXXXXXXX */
|
|
|
- if (stream_mac) {
|
|
|
- mac_ctx = hash;
|
|
|
- } else {
|
|
|
- hmac = EVP_MD_CTX_new();
|
|
|
- if (hmac == NULL || !EVP_MD_CTX_copy(hmac, hash)) {
|
|
|
- goto end;
|
|
|
- }
|
|
|
- mac_ctx = hmac;
|
|
|
- }
|
|
|
-
|
|
|
- if (!SSL_CONNECTION_IS_DTLS(sc) && tlstree_mac
|
|
|
- && EVP_MD_CTX_ctrl(mac_ctx, EVP_MD_CTRL_TLSTREE, 0, seq) <= 0) {
|
|
|
- goto end;
|
|
|
- }
|
|
|
-
|
|
|
- if (SSL_CONNECTION_IS_DTLS(sc)) {
|
|
|
- unsigned char dtlsseq[8], *p = dtlsseq;
|
|
|
-
|
|
|
- s2n(DTLS_RECORD_LAYER_get_w_epoch(&sc->rlayer), p);
|
|
|
- memcpy(p, &seq[2], 6);
|
|
|
-
|
|
|
- memcpy(header, dtlsseq, 8);
|
|
|
- } else
|
|
|
- memcpy(header, seq, 8);
|
|
|
-
|
|
|
- header[8] = rec->type;
|
|
|
- header[9] = (unsigned char)(sc->version >> 8);
|
|
|
- header[10] = (unsigned char)(sc->version);
|
|
|
- header[11] = (unsigned char)(rec->length >> 8);
|
|
|
- header[12] = (unsigned char)(rec->length & 0xff);
|
|
|
-
|
|
|
- if (EVP_DigestSignUpdate(mac_ctx, header, sizeof(header)) <= 0
|
|
|
- || EVP_DigestSignUpdate(mac_ctx, rec->input, rec->length) <= 0
|
|
|
- || EVP_DigestSignFinal(mac_ctx, md, &md_size) <= 0) {
|
|
|
- goto end;
|
|
|
- }
|
|
|
-
|
|
|
- OSSL_TRACE_BEGIN(TLS) {
|
|
|
- BIO_printf(trc_out, "seq:\n");
|
|
|
- BIO_dump_indent(trc_out, seq, 8, 4);
|
|
|
- BIO_printf(trc_out, "rec:\n");
|
|
|
- BIO_dump_indent(trc_out, rec->data, rec->length, 4);
|
|
|
- } OSSL_TRACE_END(TLS);
|
|
|
-
|
|
|
- if (!SSL_CONNECTION_IS_DTLS(sc)) {
|
|
|
- for (i = 7; i >= 0; i--) {
|
|
|
- ++seq[i];
|
|
|
- if (seq[i] != 0)
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
- OSSL_TRACE_BEGIN(TLS) {
|
|
|
- BIO_printf(trc_out, "md:\n");
|
|
|
- BIO_dump_indent(trc_out, md, md_size, 4);
|
|
|
- } OSSL_TRACE_END(TLS);
|
|
|
- ret = 1;
|
|
|
- end:
|
|
|
- EVP_MD_CTX_free(hmac);
|
|
|
- return ret;
|
|
|
-}
|