Check.kbkdf_counter: def of bend-osdev-crypto@0.1.0.0
Import: import bend-osdev-crypto@0.1.0.0/check.bend as Check
Lines 388-392 of bend-osdev-crypto@0.1.0.0/check.bend: https://jend.leeeet.dev/read.txt?path=bend-osdev-crypto@0.1.0.0/check.bend&start_line=388&end_line=392

import Base
import bend-osdev-bytes@0.1.0.0/bytes.bend as B
import bend-osdev-crypto@0.1.0.0/inst_kbkdf.bend as KbI

# SP 800-108 over HMAC-SHA-256: counter mode (cryptography's KBKDFHMAC
# gives the value), feedback mode (ref/gen.py's SP 800-108), and an output
# too long for a one-byte counter refused
def kbkdf_counter(n: Nat) -> String:
  show(KbI.CrKbkdf.hmac_sha256_counter(B.Octets.of_string("secret key bytes"), B.Octets.of_string("label"), B.Octets.of_string("context"), n))

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.0/bytes.bend&name=Octets.of_string
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/check.bend&name=show
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/inst_kbkdf.bend&name=CrKbkdf.hmac_sha256_counter