Hawkynt

TLS-12-PRF(HMAC(SHA-384))

TLS 1.2 Pseudorandom Function using HMAC-SHA-384. Modern TLS key derivation supporting arbitrary hash functions. Uses P_hash construction with single PRF instead of dual MD5+SHA-1.

Properties

Property	Value
Category	Key Derivation Functions
Sub-category	Key Derivation Function
Security status	🛡️ Secure
Complexity	Intermediate
Inventor	IETF TLS Working Group
Year	2008
Origin	🇺🇸 United States
Source	algorithms/kdf/tls-prf.js

Parameters

Parameter	Supported values
Output sizes	1 byte (8 bits) to 1024 bytes (8192 bits)

Capabilities

Flag	Value
SaltRequired	Yes

Security

Status: 🛡️ Secure

No vulnerabilities are recorded for this implementation.

Documentation

• RFC 5246 - TLS 1.2 Protocol
• Botan TLS-12-PRF Implementation
• IETF Mail Archive - Test Vectors

References

• OpenSSL TLS1.2 PRF
• RFC 8446 - TLS 1.3

Test vectors

1 vector ship with this algorithm and run in the test suite. Byte values are hexadecimal.

Vector 1 — IETF TLS 1.2 SHA-384 Test Vector

Field	Value
salt	cd665cf6a8447dd6ff8b27555edb7465
label	74657374206c6162656c
outputSize	148
input	b80b733d6ceefcdc71566ea48e5567df
expected	7b0c18e9ced410ed1804f2cfa34a336a 1c14dffb4900bb5fd7942107e81c83cd e9ca0faa60be9fe34f82b1233c9146a0 e534cb400fed2700884f9dc236f80edd 8bfa961144c9e8d792eca722a7b32fc3 d416d473ebc2c5fd4abfdad05d918425 9b5bf8cd4d90fa0d31e2dec479e4f1a2 6066f2eea9a69236a3e52655c9e9aee6 91c8f3a26854308d5eaa3be85e099070 3d73e56f

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