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Adapt ssl_write_encrypted_pms() to use raw public key

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We must dispatch between the peer's public key stored as part of
the peer's CRT in the current session structure (situation until
now, and future behaviour if MBEDTLS_SSL_KEEP_PEER_CERTIFICATE is
enabled), and the sole public key stored in the handshake structure
(new, if MBEDTLS_SSL_KEEP_PEER_CERTIFICATE is disabled).
This commit is contained in:
Hanno Becker 2019-02-06 16:49:54 +00:00
parent cf291d63dd
commit 374800a231
1 changed files with 8 additions and 3 deletions
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11
library/ssl_cli.c
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@ -2288,6 +2288,7 @@ static int ssl_write_encrypted_pms( mbedtls_ssl_context *ssl,
int ret;
size_t len_bytes = ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_0 ? 0 : 2;
unsigned char *p = ssl->handshake->premaster + pms_offset;
mbedtls_pk_context * peer_pk;
if( offset + len_bytes > MBEDTLS_SSL_OUT_CONTENT_LEN )
{
@ -2313,23 +2314,27 @@ static int ssl_write_encrypted_pms( mbedtls_ssl_context *ssl,
ssl->handshake->pmslen = 48;
#if !defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE)
peer_pk = &ssl->handshake->peer_pubkey;
#else /* !MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
if( ssl->session_negotiate->peer_cert == NULL )
{
/* Should never happen */
return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
}
peer_pk = &ssl->session_negotiate->peer_cert->pk;
#endif /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
/*
* Now write it out, encrypted
*/
if( ! mbedtls_pk_can_do( &ssl->session_negotiate->peer_cert->pk,
MBEDTLS_PK_RSA ) )
if( ! mbedtls_pk_can_do( peer_pk, MBEDTLS_PK_RSA ) )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "certificate key type mismatch" ) );
return( MBEDTLS_ERR_SSL_PK_TYPE_MISMATCH );
}
if( ( ret = mbedtls_pk_encrypt( &ssl->session_negotiate->peer_cert->pk,
if( ( ret = mbedtls_pk_encrypt( peer_pk,
p, ssl->handshake->pmslen,
ssl->out_msg + offset + len_bytes, olen,
MBEDTLS_SSL_OUT_CONTENT_LEN - offset - len_bytes,