34bfa15b21
mbedtls_mpi_read_binary{,_le} (in https://github.com/ARMmbed/mbedtls/pull/4276)
and mbedtls_mpi_read_string (in https://github.com/ARMmbed/mbedtls/pull/4644)
changed their behavior on an empty input from constructing an MPI object with
one limb to not allocating a limb. In principle, this change should be
transparent to applications, however it caused a bug in the library and it does
affect the value when writing back out, so list the change in the changelog.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
10 lines
569 B
Plaintext
10 lines
569 B
Plaintext
Changes
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* mbedtls_mpi_read_binary(), mbedtls_mpi_read_binary_le() and
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mbedtls_mpi_read_string() now construct an mbedtls_mpi object with 0 limbs
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when their input has length 0. Note that this is an implementation detail
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and can change at any time, so this change should be transparent, but it
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may result in mbedtls_mpi_write_binary() or mbedtls_mpi_write_string()
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now writing an empty string where it previously wrote one or more
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zero digits when operating from values constructed with an mpi_read
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function and some mpi operations.
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