Module Cryptography

Provides models for cryptographic concepts.

Note: The CryptographicAlgorithm class currently doesn’t take weak keys into consideration for the isWeak member predicate. So RSA is always considered secure, although using a low number of bits will actually make it insecure. We plan to improve our libraries in the future to more precisely capture this aspect.

Import path

import semmle.python.internal.ConceptsShared

Classes

BlockMode	A cryptographic block cipher mode of operation. This can be used to encrypt data of arbitrary length using a block encryption algorithm.
CryptographicOperation	A data-flow node that is an application of a cryptographic algorithm. For example, encryption, decryption, signature-validation.

Modules

CryptographicOperation

Provides classes for modeling new applications of a cryptographic algorithms.

Aliases

CryptographicAlgorithm	A cryptographic algorithm.
EncryptionAlgorithm	An encryption algorithm such as `DES` or `AES512`.
HashingAlgorithm	A hashing algorithm such as `MD5` or `SHA512`.
PasswordHashingAlgorithm	A password hashing algorithm such as `PBKDF2` or `SCRYPT`.