TPM 2.0 vs TPM 1.2: What's the Difference for Windows 11?
Compare TPM 2.0 and TPM 1.2 specifications, security features, and Windows 11 compatibility. Understand why Microsoft requires TPM 2.0.
The distinction between TPM 2.0 and TPM 1.2 determines Windows 11 compatibility for millions of computers. This article explains the technical differences and options.
What Is the Technical Difference Between TPM 2.0 and TPM 1.2?
TPM 2.0 uses stronger SHA-256 cryptography and supports algorithm agility, while TPM 1.2 relies on deprecated SHA-1. TPM 2.0 offers better key hierarchy, policy-based authorization, and enhanced platform configuration.
TPM version differences center on cryptographic capabilities and flexibility.
Cryptographic Algorithms
| Algorithm Type | TPM 1.2 | TPM 2.0 |
|---|---|---|
| Hash | SHA-1 only | SHA-256, SHA-384, SHA-512, SHA-1 |
| Symmetric | AES-256 | AES-256, AES-128, SM4 |
| Asymmetric | RSA-2048 | RSA, ECC (P-256, P-384), SM2 |
- SHA-1 in TPM 1.2 is cryptographically broken
- Modern encryption standards require 2.0 algorithms
- Security features like VBS require 2.0 capabilities
Conclusione
The difference between TPM 2.0 and TPM 1.2 is significant from a security standpoint. However, both TPM 1.2 systems and systems without TPM can run Windows 11 using FlyOOBE bypass.
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