What is the format returned by hmac's into_bytes()?

⚓ rust    📅 2025-06-18    👤 surdeus    👁️ 3      

surdeus

I'm implementing something similar to How to set HMAC CSRF token, after the user logs in?

but using the code the crate recommends on their docs. But

HmacSha256::new_from_sliceHmacSha256::new_from_slice(b"my secret and secure key")
    .update(b"a long string")
    .finalize()
    .to_bytes();

i'm left with:

GenericArray<u8, UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>>

What is that monstrosity supposed to be?

just instantiating a Hmac::new_from_slice(), i end up with CoreWrapper<HmacCore<CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, OidSha256>>>> Manual says it should have been Self :slight_smile:

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