A physical computing device that safeguards and manages cryptographic keys and provides cryptographic processing. An HSM is or contains a cryptographic module.
Sources:
NIST SP 800-57 Part 2 Rev.1
A physical computing device that provides tamper-evident and intrusion-resistant safeguarding and management of digital keys and other secrets, as well as crypto-processing. FIPS 140-2 specifies requirements for HSMs.
Sources:
NIST SP 1800-16B
NIST SP 1800-16C
A physical computing device that provides tamper-evident and intrusion-resistant safeguarding and management of digital keys and other secrets, as well as crypto-processing. (FIPS 140-2) specifies requirements for HSMs.
Sources:
NIST SP 1800-16D