This commit is contained in:
Mark Qvist 2022-12-15 17:14:15 +01:00
commit d26bbbd59f
1 changed files with 2 additions and 2 deletions

View File

@ -33,7 +33,7 @@ def hkdf(length=None, derive_from=None, salt=None, context=None):
if length == None or length < 1: if length == None or length < 1:
raise ValueError("Invalid output key length") raise ValueError("Invalid output key length")
if derive_from == "None" or derive_from == "": if derive_from == None or derive_from == "":
raise ValueError("Cannot derive key from empty input material") raise ValueError("Cannot derive key from empty input material")
if salt == None or len(salt) == 0: if salt == None or len(salt) == 0:
@ -54,4 +54,4 @@ def hkdf(length=None, derive_from=None, salt=None, context=None):
block = hmac_sha256(pseudorandom_key, block + context + bytes([i + 1])) block = hmac_sha256(pseudorandom_key, block + context + bytes([i + 1]))
derived += block derived += block
return derived[:length] return derived[:length]