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Merge remote-tracking branch 'upstream-restricted/pr/614' into mbedtls-2.7-restricted

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This commit is contained in:
Gilles Peskine 2019-08-14 16:24:08 +02:00
commit ab327dfec7
4 changed files with 40 additions and 1 deletions
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5
ChangeLog
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@ -2,6 +2,11 @@ mbed TLS ChangeLog (Sorted per branch, date)
= mbed TLS x.x.x branch released xxxx-xx-xx
Security
* Fix a missing error detection in ECJPAKE. This could have caused a
predictable shared secret if a hardware accelerator failed and the other
side of the key exchange had a similar bug.
Bugfix
* Fix to allow building test suites with any warning that detects unused
functions. Fixes #1628.

2
library/ecjpake.c
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@ -213,7 +213,7 @@ static int ecjpake_hash( const mbedtls_md_info_t *md_info,
p += id_len;
/* Compute hash */
mbedtls_md( md_info, buf, p - buf, hash );
MBEDTLS_MPI_CHK( mbedtls_md( md_info, buf, p - buf, hash ) );
/* Turn it into an integer mod n */
MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( h, hash,

3
tests/suites/test_suite_ecjpake.data
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@ -1,6 +1,9 @@
ECJPAKE selftest
ecjpake_selftest:
ECJPAKE fail read corrupt MD
read_bad_md:"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"
ECJPAKE round one: client, valid
read_round_one:MBEDTLS_ECJPAKE_CLIENT:"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":0

31
tests/suites/test_suite_ecjpake.function
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@ -105,6 +105,37 @@ void ecjpake_selftest()
}
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_SHA256_C */
void read_bad_md( char *data )
{
mbedtls_ecjpake_context corrupt_ctx;
const unsigned char * pw = NULL;
const size_t pw_len = 0;
unsigned char *msg;
size_t len;
int any_role = MBEDTLS_ECJPAKE_CLIENT;
mbedtls_ecjpake_init( &corrupt_ctx );
msg = unhexify_alloc( data, &len );
TEST_ASSERT( msg != NULL );
TEST_ASSERT( mbedtls_ecjpake_setup( &corrupt_ctx, any_role,
MBEDTLS_MD_SHA256, MBEDTLS_ECP_DP_SECP256R1, pw, pw_len ) == 0 );
corrupt_ctx.md_info = NULL;
TEST_ASSERT( mbedtls_ecjpake_read_round_one( &corrupt_ctx, msg,
len ) == MBEDTLS_ERR_MD_BAD_INPUT_DATA );
exit:
mbedtls_ecjpake_free( &corrupt_ctx );
mbedtls_free( msg );
}
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_SHA256_C */
void read_round_one( int role, char *data, int ref_ret )
{