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Fix unchecked return in bignum

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Signed-off-by: Paul Elliott <paul.elliott@arm.com>
This commit is contained in:
Paul Elliott 2021-04-20 18:54:59 +01:00
parent 218da3fcf9
commit 7725a63c24
2 changed files with 3 additions and 2 deletions
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2
ChangeLog.d/fix_bignum_unchecked_return.txt Normal file
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@ -0,0 +1,2 @@
Bugfix
* Fix unchecked return in bignum module.

3
library/bignum.c
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@ -1666,8 +1666,7 @@ int mbedtls_mpi_mul_int( mbedtls_mpi *X, const mbedtls_mpi *A, mbedtls_mpi_uint
* calculating the result is trivial in those cases. */ * calculating the result is trivial in those cases. */
if( b == 0 || n == 0 ) if( b == 0 || n == 0 )
{ {
mbedtls_mpi_lset( X, 0 ); return mbedtls_mpi_lset( X, 0 );
return( 0 );
} }
/* Calculate A*b as A + A*(b-1) to take advantage of mpi_mul_hlp */ /* Calculate A*b as A + A*(b-1) to take advantage of mpi_mul_hlp */