CMMC 2.13
CMMC · Rev 2.132FAMILY IA
IA.L2-3.5.10
Cryptographically-Protected Passwords
Requirement
Store and transmit only cryptographically protected passwords.
Further discussion
All passwords must be cryptographically protected using a one-way function for storage and transmission. This type of protection changes passwords into another form, or a hashed password. A one-way transformation makes it theoretically impossible to turn the hashed password back into the original password, but inadequate complexity (IA.L2-3.5.7) may still facilitate offline cracking of hashes.
Example
You are responsible for managing passwords for your organization. You protect all passwords with a one-way transformation, or hashing, before storing them. Passwords are never transmitted across a network unencrypted [a,b].
Potential Assessment Considerations
• Are passwords prevented from being stored in reversible encryption form in any company systems [a]?
• Are passwords stored as one-way hashes constructed from passwords [a]?
Supporting controls
NIST 800-171 · Rev 21 mapped
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Implementation strategies
10 recommended strategies for this practice.
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Source: DoD CIO · https://dodcio.defense.gov/CMMC/