1. [JA3 Fingerprint](https://scrapfly.io/web-scraping-tools/ja3-fingerprint)
2. [ Cipher Suites ](https://scrapfly.io/web-scraping-tools/ja3-fingerprint/cipher-suites "Browse all TLS Cipher Suites")
3. TLS\_AES\_128\_GCM\_SHA256
 
   [  Browse All Cipher Suites ](https://scrapfly.io/web-scraping-tools/ja3-fingerprint/cipher-suites) 

 # TLS\_AES\_128\_GCM\_SHA256

 TLS 1.3 | 128-bit Recommended

 

### Cipher Suite Details



Cipher Suite Name

`TLS_AES_128_GCM_SHA256`

 

Hex Value

`0x1301`

 

Decimal Code

`4865`

 

TLS Version

TLS 1.3

 

Security Level

128-bit

 

Recommended

  Yes 

 

 

 

### What is TLS\_AES\_128\_GCM\_SHA256?



TLS\_AES\_128\_GCM\_SHA256 is the most widely used TLS 1.3 cipher suite, combining AES-128 encryption in GCM (Galois/Counter Mode) with SHA-256 for key derivation. It provides 128-bit security with excellent performance on both hardware and software implementations. AES-128-GCM is authenticated encryption (AEAD - Authenticated Encryption with Associated Data), providing both confidentiality and integrity in a single operation. GCM mode is highly parallelizable, making it ideal for modern multi-core CPUs. This cipher suite is mandatory to implement in TLS 1.3 and is the default choice for most browsers and servers.



 

### Role in JA3 Fingerprinting



The **TLS\_AES\_128\_GCM\_SHA256** cipher suite is part of the TLS Client Hello that JA3 analyzes. Cipher suite order and selection are key indicators of browser type and version.

**JA3 Format:** `TLS_VERSION,CIPHERS,EXTENSIONS,CURVES,POINT_FORMATS`

Different browsers prioritize different cipher suites (Chrome prefers ChaCha20 on mobile, Firefox prioritizes AES-GCM, etc.), making cipher suite ordering a reliable fingerprint.

 

 

 

### Test Your Cipher Suites



 [  View Your JA3 Fingerprint ](https://scrapfly.io/web-scraping-tools/ja3-fingerprint) 

See which cipher suites your browser advertises, including TLS\_AES\_128\_GCM\_SHA256.

 

### Technical References



- [RFC 8446 - Cipher Suite Specification ](https://datatracker.ietf.org/doc/html/rfc8446)
- [ciphersuite.info - TLS\_AES\_128\_GCM\_SHA256 ](https://ciphersuite.info/cs/TLS_AES_128_GCM_SHA256/)
- [IANA TLS Cipher Suites Registry ](https://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml#tls-parameters-4)