static int eckey_priv_encode(CBB *out, const EVP_PKEY *key) {
const EC_KEY *ec_key = key->pkey.ec;
// Omit the redundant copy of the curve name. This contradicts RFC 5915 but
// aligns with PKCS #11. SEC 1 only says they may be omitted if known by other
// means. Both OpenSSL and NSS omit the redundant parameters, so we omit them
// as well.
unsigned enc_flags = EC_KEY_get_enc_flags(ec_key) | EC_PKEY_NO_PARAMETERS;
// See RFC 5915.
CBB pkcs8, algorithm, oid, private_key;
if (!CBB_add_asn1(out, &pkcs8, CBS_ASN1_SEQUENCE) ||
!CBB_add_asn1_uint64(&pkcs8, 0 /* version */) ||
!CBB_add_asn1(&pkcs8, &algorithm, CBS_ASN1_SEQUENCE) ||
!CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
!CBB_add_bytes(&oid, ec_asn1_meth.oid, ec_asn1_meth.oid_len) ||
!EC_KEY_marshal_curve_name(&algorithm, EC_KEY_get0_group(ec_key)) ||
!CBB_add_asn1(&pkcs8, &private_key, CBS_ASN1_OCTETSTRING) ||
!EC_KEY_marshal_private_key(&private_key, ec_key, enc_flags) ||
!CBB_flush(out)) {
OPENSSL_PUT_ERROR(EVP, EVP_R_ENCODE_ERROR);
return 0;
}
return 1;
}
int RSA_marshal_private_key(CBB *cbb, const RSA *rsa) {
const int is_multiprime =
sk_RSA_additional_prime_num(rsa->additional_primes) > 0;
CBB child;
if (!CBB_add_asn1(cbb, &child, CBS_ASN1_SEQUENCE) ||
!CBB_add_asn1_uint64(&child,
is_multiprime ? kVersionMulti : kVersionTwoPrime) ||
!marshal_integer(&child, rsa->n) ||
!marshal_integer(&child, rsa->e) ||
!marshal_integer(&child, rsa->d) ||
!marshal_integer(&child, rsa->p) ||
!marshal_integer(&child, rsa->q) ||
!marshal_integer(&child, rsa->dmp1) ||
!marshal_integer(&child, rsa->dmq1) ||
!marshal_integer(&child, rsa->iqmp)) {
OPENSSL_PUT_ERROR(RSA, RSA_R_ENCODE_ERROR);
return 0;
}
CBB other_prime_infos;
if (is_multiprime) {
if (!CBB_add_asn1(&child, &other_prime_infos, CBS_ASN1_SEQUENCE)) {
OPENSSL_PUT_ERROR(RSA, RSA_R_ENCODE_ERROR);
return 0;
}
size_t i;
for (i = 0; i < sk_RSA_additional_prime_num(rsa->additional_primes); i++) {
RSA_additional_prime *ap =
sk_RSA_additional_prime_value(rsa->additional_primes, i);
CBB other_prime_info;
if (!CBB_add_asn1(&other_prime_infos, &other_prime_info,
CBS_ASN1_SEQUENCE) ||
!marshal_integer(&other_prime_info, ap->prime) ||
!marshal_integer(&other_prime_info, ap->exp) ||
!marshal_integer(&other_prime_info, ap->coeff) ||
!CBB_flush(&other_prime_infos)) {
OPENSSL_PUT_ERROR(RSA, RSA_R_ENCODE_ERROR);
return 0;
}
}
}
if (!CBB_flush(cbb)) {
OPENSSL_PUT_ERROR(RSA, RSA_R_ENCODE_ERROR);
return 0;
}
return 1;
}
int DSA_marshal_private_key(CBB *cbb, const DSA *dsa) {
CBB child;
if (!CBB_add_asn1(cbb, &child, CBS_ASN1_SEQUENCE) ||
!CBB_add_asn1_uint64(&child, 0 /* version */) ||
!marshal_integer(&child, dsa->p) ||
!marshal_integer(&child, dsa->q) ||
!marshal_integer(&child, dsa->g) ||
!marshal_integer(&child, dsa->pub_key) ||
!marshal_integer(&child, dsa->priv_key) ||
!CBB_flush(cbb)) {
OPENSSL_PUT_ERROR(DSA, DSA_R_ENCODE_ERROR);
return 0;
}
return 1;
}
static int test_asn1_uint64(void) {
size_t i;
for (i = 0; i < sizeof(kAsn1Uint64Tests) / sizeof(kAsn1Uint64Tests[0]); i++) {
const ASN1_UINT64_TEST *test = &kAsn1Uint64Tests[i];
CBS cbs;
uint64_t value;
CBB cbb;
uint8_t *out;
size_t len;
CBS_init(&cbs, (const uint8_t *)test->encoding, test->encoding_len);
if (!CBS_get_asn1_uint64(&cbs, &value) ||
CBS_len(&cbs) != 0 ||
value != test->value) {
return 0;
}
if (!CBB_init(&cbb, 0)) {
return 0;
}
if (!CBB_add_asn1_uint64(&cbb, test->value) ||
!CBB_finish(&cbb, &out, &len)) {
CBB_cleanup(&cbb);
return 0;
}
if (len != test->encoding_len || memcmp(out, test->encoding, len) != 0) {
free(out);
return 0;
}
free(out);
}
for (i = 0;
i < sizeof(kAsn1InvalidUint64Tests) / sizeof(kAsn1InvalidUint64Tests[0]);
i++) {
const ASN1_INVALID_UINT64_TEST *test = &kAsn1InvalidUint64Tests[i];
CBS cbs;
uint64_t value;
CBS_init(&cbs, (const uint8_t *)test->encoding, test->encoding_len);
if (CBS_get_asn1_uint64(&cbs, &value)) {
return 0;
}
}
return 1;
}
static int rsa_priv_encode(CBB *out, const EVP_PKEY *key) {
CBB pkcs8, algorithm, oid, null, private_key;
if (!CBB_add_asn1(out, &pkcs8, CBS_ASN1_SEQUENCE) ||
!CBB_add_asn1_uint64(&pkcs8, 0 /* version */) ||
!CBB_add_asn1(&pkcs8, &algorithm, CBS_ASN1_SEQUENCE) ||
!CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
!CBB_add_bytes(&oid, rsa_asn1_meth.oid, rsa_asn1_meth.oid_len) ||
!CBB_add_asn1(&algorithm, &null, CBS_ASN1_NULL) ||
!CBB_add_asn1(&pkcs8, &private_key, CBS_ASN1_OCTETSTRING) ||
!RSA_marshal_private_key(&private_key, key->pkey.rsa) ||
!CBB_flush(out)) {
OPENSSL_PUT_ERROR(EVP, EVP_R_ENCODE_ERROR);
return 0;
}
return 1;
}
int RSA_marshal_private_key(CBB *cbb, const RSA *rsa) {
CBB child;
if (!CBB_add_asn1(cbb, &child, CBS_ASN1_SEQUENCE) ||
!CBB_add_asn1_uint64(&child, kVersionTwoPrime) ||
!marshal_integer(&child, rsa->n) ||
!marshal_integer(&child, rsa->e) ||
!marshal_integer(&child, rsa->d) ||
!marshal_integer(&child, rsa->p) ||
!marshal_integer(&child, rsa->q) ||
!marshal_integer(&child, rsa->dmp1) ||
!marshal_integer(&child, rsa->dmq1) ||
!marshal_integer(&child, rsa->iqmp)) {
OPENSSL_PUT_ERROR(RSA, RSA_R_ENCODE_ERROR);
return 0;
}
if (!CBB_flush(cbb)) {
OPENSSL_PUT_ERROR(RSA, RSA_R_ENCODE_ERROR);
return 0;
}
return 1;
}
static int SSL_SESSION_to_bytes_full(const SSL_SESSION *in, uint8_t **out_data,
size_t *out_len, int for_ticket) {
CBB cbb, session, child, child2;
if (in == NULL || in->cipher == NULL) {
return 0;
}
CBB_zero(&cbb);
if (!CBB_init(&cbb, 0) ||
!CBB_add_asn1(&cbb, &session, CBS_ASN1_SEQUENCE) ||
!CBB_add_asn1_uint64(&session, kVersion) ||
!CBB_add_asn1_uint64(&session, in->ssl_version) ||
!CBB_add_asn1(&session, &child, CBS_ASN1_OCTETSTRING) ||
!CBB_add_u16(&child, (uint16_t)(in->cipher->id & 0xffff)) ||
!CBB_add_asn1(&session, &child, CBS_ASN1_OCTETSTRING) ||
/* The session ID is irrelevant for a session ticket. */
!CBB_add_bytes(&child, in->session_id,
for_ticket ? 0 : in->session_id_length) ||
!CBB_add_asn1(&session, &child, CBS_ASN1_OCTETSTRING) ||
!CBB_add_bytes(&child, in->master_key, in->master_key_length) ||
!CBB_add_asn1(&session, &child, kTimeTag) ||
!CBB_add_asn1_uint64(&child, in->time) ||
!CBB_add_asn1(&session, &child, kTimeoutTag) ||
!CBB_add_asn1_uint64(&child, in->timeout)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
/* The peer certificate is only serialized if the SHA-256 isn't
* serialized instead. */
if (sk_CRYPTO_BUFFER_num(in->certs) > 0 && !in->peer_sha256_valid) {
const CRYPTO_BUFFER *buffer = sk_CRYPTO_BUFFER_value(in->certs, 0);
if (!CBB_add_asn1(&session, &child, kPeerTag) ||
!CBB_add_bytes(&child, CRYPTO_BUFFER_data(buffer),
CRYPTO_BUFFER_len(buffer))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
/* Although it is OPTIONAL and usually empty, OpenSSL has
* historically always encoded the sid_ctx. */
if (!CBB_add_asn1(&session, &child, kSessionIDContextTag) ||
!CBB_add_asn1(&child, &child2, CBS_ASN1_OCTETSTRING) ||
!CBB_add_bytes(&child2, in->sid_ctx, in->sid_ctx_length)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
if (in->verify_result != X509_V_OK) {
if (!CBB_add_asn1(&session, &child, kVerifyResultTag) ||
!CBB_add_asn1_uint64(&child, in->verify_result)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if (in->tlsext_hostname) {
if (!CBB_add_asn1(&session, &child, kHostNameTag) ||
!CBB_add_asn1(&child, &child2, CBS_ASN1_OCTETSTRING) ||
!CBB_add_bytes(&child2, (const uint8_t *)in->tlsext_hostname,
strlen(in->tlsext_hostname))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if (in->psk_identity) {
if (!CBB_add_asn1(&session, &child, kPSKIdentityTag) ||
!CBB_add_asn1(&child, &child2, CBS_ASN1_OCTETSTRING) ||
!CBB_add_bytes(&child2, (const uint8_t *)in->psk_identity,
strlen(in->psk_identity))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if (in->tlsext_tick_lifetime_hint > 0) {
if (!CBB_add_asn1(&session, &child, kTicketLifetimeHintTag) ||
!CBB_add_asn1_uint64(&child, in->tlsext_tick_lifetime_hint)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if (in->tlsext_tick && !for_ticket) {
if (!CBB_add_asn1(&session, &child, kTicketTag) ||
!CBB_add_asn1(&child, &child2, CBS_ASN1_OCTETSTRING) ||
!CBB_add_bytes(&child2, in->tlsext_tick, in->tlsext_ticklen)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if (in->peer_sha256_valid) {
if (!CBB_add_asn1(&session, &child, kPeerSHA256Tag) ||
!CBB_add_asn1(&child, &child2, CBS_ASN1_OCTETSTRING) ||
!CBB_add_bytes(&child2, in->peer_sha256, sizeof(in->peer_sha256))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if (in->original_handshake_hash_len > 0) {
if (!CBB_add_asn1(&session, &child, kOriginalHandshakeHashTag) ||
!CBB_add_asn1(&child, &child2, CBS_ASN1_OCTETSTRING) ||
!CBB_add_bytes(&child2, in->original_handshake_hash,
in->original_handshake_hash_len)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if (in->tlsext_signed_cert_timestamp_list_length > 0) {
if (!CBB_add_asn1(&session, &child, kSignedCertTimestampListTag) ||
!CBB_add_asn1(&child, &child2, CBS_ASN1_OCTETSTRING) ||
!CBB_add_bytes(&child2, in->tlsext_signed_cert_timestamp_list,
in->tlsext_signed_cert_timestamp_list_length)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if (in->ocsp_response_length > 0) {
if (!CBB_add_asn1(&session, &child, kOCSPResponseTag) ||
!CBB_add_asn1(&child, &child2, CBS_ASN1_OCTETSTRING) ||
!CBB_add_bytes(&child2, in->ocsp_response, in->ocsp_response_length)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if (in->extended_master_secret) {
if (!CBB_add_asn1(&session, &child, kExtendedMasterSecretTag) ||
!CBB_add_asn1(&child, &child2, CBS_ASN1_BOOLEAN) ||
!CBB_add_u8(&child2, 0xff)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if (in->group_id > 0 &&
(!CBB_add_asn1(&session, &child, kGroupIDTag) ||
!CBB_add_asn1_uint64(&child, in->group_id))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
/* The certificate chain is only serialized if the leaf's SHA-256 isn't
* serialized instead. */
if (in->certs != NULL &&
!in->peer_sha256_valid &&
sk_CRYPTO_BUFFER_num(in->certs) >= 2) {
if (!CBB_add_asn1(&session, &child, kCertChainTag)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
for (size_t i = 1; i < sk_CRYPTO_BUFFER_num(in->certs); i++) {
const CRYPTO_BUFFER *buffer = sk_CRYPTO_BUFFER_value(in->certs, i);
if (!CBB_add_bytes(&child, CRYPTO_BUFFER_data(buffer),
CRYPTO_BUFFER_len(buffer))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
}
if (in->ticket_age_add_valid) {
if (!CBB_add_asn1(&session, &child, kTicketAgeAddTag) ||
!CBB_add_asn1(&child, &child2, CBS_ASN1_OCTETSTRING) ||
!CBB_add_u32(&child2, in->ticket_age_add)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if (!in->is_server) {
if (!CBB_add_asn1(&session, &child, kIsServerTag) ||
!CBB_add_asn1(&child, &child2, CBS_ASN1_BOOLEAN) ||
!CBB_add_u8(&child2, 0x00)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if (in->peer_signature_algorithm != 0 &&
(!CBB_add_asn1(&session, &child, kPeerSignatureAlgorithmTag) ||
!CBB_add_asn1_uint64(&child, in->peer_signature_algorithm))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
if (in->ticket_max_early_data != 0 &&
(!CBB_add_asn1(&session, &child, kTicketMaxEarlyDataTag) ||
!CBB_add_asn1_uint64(&child, in->ticket_max_early_data))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
if (in->timeout != in->auth_timeout &&
(!CBB_add_asn1(&session, &child, kAuthTimeoutTag) ||
!CBB_add_asn1_uint64(&child, in->auth_timeout))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
if (in->early_alpn) {
if (!CBB_add_asn1(&session, &child, kEarlyALPNTag) ||
!CBB_add_asn1(&child, &child2, CBS_ASN1_OCTETSTRING) ||
!CBB_add_bytes(&child2, (const uint8_t *)in->early_alpn,
in->early_alpn_len)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if (!CBB_finish(&cbb, out_data, out_len)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
return 1;
err:
CBB_cleanup(&cbb);
return 0;
}
int
i2d_SSL_SESSION(SSL_SESSION *s, unsigned char **pp)
{
CBB cbb, session, cipher_suite, session_id, master_key, time, timeout;
CBB peer_cert, sidctx, verify_result, hostname, lifetime, ticket;
CBB value;
unsigned char *data = NULL, *peer_cert_bytes = NULL;
size_t data_len = 0;
int len, rv = -1;
uint16_t cid;
if (s == NULL)
return (0);
if (s->cipher == NULL && s->cipher_id == 0)
return (0);
if (!CBB_init(&cbb, 0))
goto err;
if (!CBB_add_asn1(&cbb, &session, CBS_ASN1_SEQUENCE))
goto err;
/* Session ASN1 version. */
if (!CBB_add_asn1_uint64(&session, SSL_SESSION_ASN1_VERSION))
goto err;
/* TLS/SSL protocol version. */
if (s->ssl_version < 0)
goto err;
if (!CBB_add_asn1_uint64(&session, s->ssl_version))
goto err;
/* Cipher suite ID. */
/* XXX - require cipher to be non-NULL or always/only use cipher_id. */
cid = (uint16_t)(s->cipher_id & 0xffff);
if (s->cipher != NULL)
cid = ssl3_cipher_get_value(s->cipher);
if (!CBB_add_asn1(&session, &cipher_suite, CBS_ASN1_OCTETSTRING))
goto err;
if (!CBB_add_u16(&cipher_suite, cid))
goto err;
/* Session ID. */
if (!CBB_add_asn1(&session, &session_id, CBS_ASN1_OCTETSTRING))
goto err;
if (!CBB_add_bytes(&session_id, s->session_id, s->session_id_length))
goto err;
/* Master key. */
if (!CBB_add_asn1(&session, &master_key, CBS_ASN1_OCTETSTRING))
goto err;
if (!CBB_add_bytes(&master_key, s->master_key, s->master_key_length))
goto err;
/* Time [1]. */
if (s->time != 0) {
if (s->time < 0)
goto err;
if (!CBB_add_asn1(&session, &time, SSLASN1_TIME_TAG))
goto err;
if (!CBB_add_asn1_uint64(&time, s->time))
goto err;
}
/* Timeout [2]. */
if (s->timeout != 0) {
if (s->timeout < 0)
goto err;
if (!CBB_add_asn1(&session, &timeout, SSLASN1_TIMEOUT_TAG))
goto err;
if (!CBB_add_asn1_uint64(&timeout, s->timeout))
goto err;
}
/* Peer certificate [3]. */
if (s->peer != NULL) {
if ((len = i2d_X509(s->peer, &peer_cert_bytes)) <= 0)
goto err;
if (!CBB_add_asn1(&session, &peer_cert, SSLASN1_PEER_CERT_TAG))
goto err;
if (!CBB_add_bytes(&peer_cert, peer_cert_bytes, len))
goto err;
}
/* Session ID context [4]. */
/* XXX - Actually handle this as optional? */
if (!CBB_add_asn1(&session, &sidctx, SSLASN1_SESSION_ID_CTX_TAG))
goto err;
if (!CBB_add_asn1(&sidctx, &value, CBS_ASN1_OCTETSTRING))
goto err;
if (!CBB_add_bytes(&value, s->sid_ctx, s->sid_ctx_length))
goto err;
/* Verify result [5]. */
if (s->verify_result != X509_V_OK) {
if (s->verify_result < 0)
goto err;
if (!CBB_add_asn1(&session, &verify_result,
SSLASN1_VERIFY_RESULT_TAG))
goto err;
if (!CBB_add_asn1_uint64(&verify_result, s->verify_result))
goto err;
}
/* Hostname [6]. */
if (s->tlsext_hostname != NULL) {
if (!CBB_add_asn1(&session, &hostname, SSLASN1_HOSTNAME_TAG))
goto err;
if (!CBB_add_asn1(&hostname, &value, CBS_ASN1_OCTETSTRING))
goto err;
if (!CBB_add_bytes(&value, (const uint8_t *)s->tlsext_hostname,
strlen(s->tlsext_hostname)))
goto err;
}
/* PSK identity hint [7]. */
/* PSK identity [8]. */
/* Ticket lifetime hint [9]. */
if (s->tlsext_tick_lifetime_hint > 0) {
if (!CBB_add_asn1(&session, &lifetime, SSLASN1_LIFETIME_TAG))
goto err;
if (!CBB_add_asn1_uint64(&lifetime,
s->tlsext_tick_lifetime_hint))
goto err;
}
/* Ticket [10]. */
if (s->tlsext_tick) {
if (!CBB_add_asn1(&session, &ticket, SSLASN1_TICKET_TAG))
goto err;
if (!CBB_add_asn1(&ticket, &value, CBS_ASN1_OCTETSTRING))
goto err;
if (!CBB_add_bytes(&value, s->tlsext_tick, s->tlsext_ticklen))
goto err;
}
/* Compression method [11]. */
/* SRP username [12]. */
if (!CBB_finish(&cbb, &data, &data_len))
goto err;
if (data_len > INT_MAX)
goto err;
if (pp != NULL) {
if (*pp == NULL) {
*pp = data;
data = NULL;
} else {
memcpy(*pp, data, data_len);
*pp += data_len;
}
}
rv = (int)data_len;
err:
CBB_cleanup(&cbb);
freezero(data, data_len);
free(peer_cert_bytes);
return rv;
}
