+V11.4 Hashing and Hash-based Functions
---+V11.4.1 Verify that only approved hash functions are used for general cryptographic use cases, including …
---+V11.4.2 Verify that passwords are stored using an approved, computationally intensive, key derivation …
---+V11.4.3 Verify that hash functions used in digital signatures, as part of data authentication or data …
---+V11.4.4 Verify that the application uses approved key derivation functions with key stretching parameters …

V11.4 Hashing and Hash-based Functions

Cryptographic hashes are used in a wide variety of cryptographic protocols, such as digital signatures, HMAC, key derivation functions (KDF), random bit generation, and password storage. The security of the cryptographic system is only as strong as the underlying hash functions used. This section outlines the requirements for using secure hash functions in cryptographic operations.

For password storage, as well as the cryptography appendix, the OWASP Password Storage Cheat Sheet will also provide useful context and guidance.

1. Επισκόπηση

Τίτλος	Πρότυπο
V11.4.1 Verify that only approved hash functions are used for general cryptographic use cases, including …	Verify that only approved hash functions are used for general cryptographic use cases, including digital signatures, HMAC, KDF, and random bit generation. Disallowed hash functions, such as MD5, must not be used for any cryptographic purpose.
V11.4.2 Verify that passwords are stored using an approved, computationally intensive, key derivation …	Verify that passwords are stored using an approved, computationally intensive, key derivation function (also known as a "password hashing function"), with parameter settings configured based on current guidance. The settings should balance security and performance to make brute-force attacks sufficiently challenging for the required level of security.
V11.4.3 Verify that hash functions used in digital signatures, as part of data authentication or data …	Verify that hash functions used in digital signatures, as part of data authentication or data integrity are collision resistant and have appropriate bit-lengths. If collision resistance is required, the output length must be at least 256 bits. If only resistance to second pre-image attacks is required, the output length must be at least 128 bits.
V11.4.4 Verify that the application uses approved key derivation functions with key stretching parameters …	Verify that the application uses approved key derivation functions with key stretching parameters when deriving secret keys from passwords. The parameters in use must balance security and performance to prevent brute-force attacks from compromising the resulting cryptographic key.

1.1 Παραπομπές

1.2 Εντοπισμένες απαιτήσεις

1.3 Σχετικοί κανονισμοί

2. Εντοπισμένες απαιτήσεις

Απαιτήσεις
Πηγή	Απαίτηση

3. Σχετικοί κανονισμοί

Κανονισμοί
Πηγή	Κανονισμός

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