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Add early detection of bad parameters in mbedtls_deduce_primes

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Hanno Becker 2017-10-11 12:58:23 +01:00
parent a565f54c4c
commit 14a00c0578
1 changed files with 5 additions and 0 deletions
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5
library/rsa_internal.c
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@ -169,6 +169,11 @@ int mbedtls_rsa_deduce_primes( mbedtls_mpi const *N,
MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &K, &K, &K ) ); MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &K, &K, &K ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( &K, &K, N ) ); MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( &K, &K, N ) );
} }
if( mbedtls_mpi_cmp_int( &K, 1 ) != 0 )
{
break;
}
} }
ret = MBEDTLS_ERR_MPI_BAD_INPUT_DATA; ret = MBEDTLS_ERR_MPI_BAD_INPUT_DATA;