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dgarske merged 1 commit into from
Jul 22, 2025
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Edited typos #211

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6 changes: 3 additions & 3 deletions wolfSSL-FIPS-FAQ/src/section02.md
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Expand Up @@ -119,11 +119,11 @@ wolfCrypt_SetCb_fips(myFipsCb);

2. wolfSSL Inc also wanted an option available should one wish to call one of the ESV validated entropy sources so a callback option made sense.

## Will my applications that are linked agaist the 140-3 module still work with the 140-3 module?
## Will my applications that are linked agaist the 140-2 module still work with the 140-3 module?

A: Absolutely! wolfCrypt FIPS modules v2.x (cert #3389, 140-2 module) has 100% API compatibility minus the 3DES services with wolfCrypt FIPS module v5.2.1 (cert #4718, 140-3 module). In addition to the 140-2 APIs, there are new services (TLS KDFs, AES-OFB, etc) and newer extended APIs. For a full list of new services and new API definitions supported by the 140-3 module please refer to the FIPS 140-3 User Guide [UG] which includes an exhaustive list of every FIPS service and correlated API + description(s). If you need a copy of the [UG] please let the wolfSSL team know by emailing [email protected] requesting a copy of the FIPS [UG].

## The wc_SetSeed_Cd() callback and the TLS Layer:
## The wc_SetSeed_Cb() callback and the TLS Layer:

If a user-supplied seed routine is to be used in conjunction with the TLS layer, wc_SetSeed_Cb(user_seed_function) must be called after the initial wolfSSL_Init(), and before the application calls wolfSSL_CTX_new().

Expand All @@ -139,7 +139,7 @@ wolfSSL_CTX_new(&ctx);

To avoid potential implementation bugs users could alternatively use the setting #define CUSTOM_RAND_GENERATE' and register their own custom RNG seed gen callback.

Example of setting custom seed gen without depending on wc_SetSeed_Cd():
Example of setting custom seed gen without depending on wc_SetSeed_Cb():

```
extern unsigned int my_rng_seed_gen(void);
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