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Merge pull request #4694 from gilles-peskine-arm/out_size-3.0

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Add output size parameter to signature functions
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Ronald Cron 2021-06-29 09:43:17 +02:00 • committed by GitHub
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docs/3.0-migration-guide.d/out_size.md Normal file
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Extra parameter for the output buffer size
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The following functions now take an extra parameter indicating the size of the output buffer:
* `mbedtls_ecdsa_write_signature()`, `mbedtls_ecdsa_write_signature_restartable()`
* `mbedtls_pk_sign()`, `mbedtls_pk_sign_restartable()`
The requirements for the output buffer have not changed, but passing a buffer that is too small now reliably causes the functions to return an error, rather than overflowing the buffer.