hash_hmac() — internals

hash_hmac() — internals

Where it lives

• Signature: src/builtins/string/hash_hmac.rs
• Lowering: src/codegen/lower_inst/builtins/strings.rs:245 (lower_hash_hmac)
• Function symbol: lower_hash_hmac()

Lowering notes

• Lowers hash_hmac(algo, data, key, binary?) through the shared HMAC runtime dispatcher.

Runtime helpers

The following runtime helpers are referenced:

• __rt_hash_equals
• __rt_hash_hmac

Signature summary

function hash_hmac(string $algo, string $data, string $key, bool $binary = false): string

What the type checker enforces

• Arity: takes 3–4 arguments (1 optional).

Eval interpreter (magician)

• Declaration: crates/elephc-magician/src/interpreter/builtins/string/hash_hmac.rs (eval_builtin!)
• Dispatch hooks: direct, values

Cross-references

• User reference for hash_hmac()