EVP_MAX_BLOCK_LENGTH Macro for upgrading application from openssl 1.0.2 to openssl 3.0
matt at openssl.org
Wed Aug 11 08:46:29 UTC 2021
On 11/08/2021 08:16, Paramashivaiah, Sunil wrote:
> Hi All,
> In our application we are using MD5_CBLOCK, SHA_CBLOCK, SHA256_CBLOCK,
> SHA512_CBLOCK macros which are deprecated in openssl 3.0.
> We are trying upgrade our application from using openssl
> 1.0.2 to openssl 3.0.
> Can we use EVP_MAX_BLOCK_LENGTH to replace all these
> macros. Please suggest.
No, these things are not equivalent. EVP_MAX_BLOCK_LENGTH is referring
to the block size for ciphers. Why do you need the block size for the
You can query the block size for a given digest at runtime using
> Thanks and Regards,
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