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Merge pull request #3209 from aurel32/fix-ecp_double_add_mxz

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Fix wrong modulo call in ecp_double_add_mxz
This commit is contained in:
Manuel Pégourié-Gonnard
2020-04-24 09:28:17 +02:00
committed by GitHub
parent 494f6cb823 66deb38d64
commit b1c8e41ae3
2 changed files with 5 additions and 1 deletions
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library/ecp.c
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@ -2332,7 +2332,7 @@ static int ecp_double_add_mxz( const mbedtls_ecp_group *grp,
MBEDTLS_MPI_CHK( mbedtls_mpi_sub_mod( grp, &D, &Q->X, &Q->Z ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mod( grp, &DA, &D, &A ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mod( grp, &CB, &C, &B ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_add_mpi( &S->X, &DA, &CB ) ); MOD_MUL( S->X );
MBEDTLS_MPI_CHK( mbedtls_mpi_add_mod( grp, &S->X, &DA, &CB ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mod( grp, &S->X, &S->X, &S->X ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_sub_mod( grp, &S->Z, &DA, &CB ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mod( grp, &S->Z, &S->Z, &S->Z ) );