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AES-SIV: correct error in key size check #79

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Merged
lealem47 merged 1 commit into from
Dec 3, 2025
Merged

AES-SIV: correct error in key size check #79

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10 changes: 8 additions & 2 deletions tests/test_ciphers.py
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Original file line number Diff line number Diff line change
Expand Up @@ -734,8 +734,14 @@ def test_ed448_sign_verify(ed448_private, ed448_public):


@pytest.mark.skipif(not _lib.AES_SIV_ENABLED, reason="AES-SIV not enabled")
def test_aessiv_encrypt_decrypt():
key = random.randbytes(32)
@pytest.mark.parametrize("key_size", [256 // 8, 384 // 8, 512 // 8])
def test_aessiv_encrypt_decrypt(key_size):
"""
Test that data encrypted by AES-SIV can be decrypted.

:param key_size: AES-SIV key size in bytes.
"""
key = random.randbytes(key_size)
aessiv = AesSiv(key)
associated_data = random.randbytes(16)
nonce = random.randbytes(12)
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3 changes: 2 additions & 1 deletion wolfcrypt/ciphers.py
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Expand Up @@ -280,7 +280,8 @@ class AesSiv(object):
"""
AES-SIV (Synthetic Initialization Vector) implementation as described in RFC 5297.
"""
_key_sizes = [16, 24, 32]
# RFC 5297 defines key sizes of 256-, 384-, or 512 bits.
_key_sizes = [32, 48, 64]
block_size = 16

def __init__(self, key):
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