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"""Signer utils for internal use that require pyca/cryptography."""
from cryptography.hazmat.primitives.hashes import (
SHA224,
SHA256,
SHA384,
SHA512,
HashAlgorithm,
)
def get_hash_algorithm(name: str) -> HashAlgorithm:
"""Helper to return hash algorithm object for name."""
if name == "sha224":
return SHA224()
elif name == "sha256":
return SHA256()
elif name == "sha384":
return SHA384()
elif name == "sha512":
return SHA512()
raise ValueError(f"Unsupported hash algorithm: {name}")
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